Flying probe tester four-wire needle head and needle seat assembly

Abstract

The utility model discloses a four-wire needle head needle seat assembly of a flying probe testing machine, which relates to the technical field of flying probe testing machines and comprises a main body base plate, a connecting plate is detachably mounted at the bottom end of one side of the main body base plate, and a supporting base plate is detachably mounted at the bottom end of one side, close to the connecting plate, of the main body base plate. Side face connecting plates are detachably installed at the top ends of the two sides of the supporting chassis, a fastening disc is detachably installed on one side of each side face connecting plate, and a first connecting hole is formed in the surface of one side of each fastening disc. Side face connecting plates are installed on the top end surfaces of the two sides of the supporting chassis, at the moment, third connecting holes and second connecting holes are installed in an aligned mode, auxiliary fastening discs are installed on the top ends of the side faces of the side face connecting plates, second locking holes and first locking holes are installed in an aligned mode, and then the auxiliary fastening discs are installed at the bottom ends of the side faces of the side face connecting plates. And the first connecting hole and the third connecting hole are aligned and mounted.

Description

Technical Field

[0001] The utility model relates to the technical field of flying probe testers, in particular to a four-wire needle head and needle seat assembly of a flying probe tester. Background Art

[0002] A flying probe tester is an instrument used for testing PCBs (printed circuit boards) with high-density component placement, numerous layers, high wiring density, and close test point spacing. It primarily tests the insulation and continuity values ​​of the circuit board. The tester generally utilizes a "true value comparison location method" to monitor the test process and fault points in real time, ensuring test accuracy. Flying probe testers offer precise pitch, freedom from grid restrictions, flexible testing, and high speed. Flying probe testing utilizes four test probes to perform high-voltage insulation and low-resistance continuity tests (testing for opens and shorts) on circuit boards without the need for a test fixture, making it ideal for testing small batches of prototypes. Currently, the cost of producing a bed-of-nails test fixture ranges from several thousand yuan to tens of thousands of yuan. The complex manufacturing process requires a drilling machine, and the commissioning process is complex. The flying probe test uses the movement of four needles to measure the PCB network, which greatly increases flexibility. There is no need to change the fixture when testing different PCB boards. The PCB board can be directly installed and the test program can be run. However, in actual use, unstable fixation will directly affect the processing accuracy of the device. Therefore, we have redesigned a four-wire needle head and needle holder assembly for the flying probe tester. Utility Model Content

[0003] The utility model aims to provide a four-wire needle head and needle seat assembly for a flying probe tester.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: A four-wire needle head needle holder assembly of a flying probe tester, comprising a main base plate, a connecting plate detachably installed on the bottom end of one side of the main base plate, a supporting chassis detachably installed on the bottom end of one side of the main base plate close to the connecting plate, side connecting plates detachably installed on the top ends of both sides of the supporting chassis, a fastening plate detachably installed on one side of the side connecting plate, a first connecting hole is provided on one side surface of the fastening plate, a four-wire needle is detachably installed on the top end of one side of the side connecting plate, a second connecting hole is provided on one side surface of the supporting chassis, a first locking hole is provided on the top end surface of one side of the side connecting plate, and a third connecting hole is provided on the bottom end surface of one side of the side connecting plate.

[0005] Preferably, the positions of the third connection hole and the second connection hole correspond one to one, and the cross-sectional apertures of the third connection hole and the second connection hole are the same.

[0006] Preferably, an auxiliary fastening plate is detachably mounted on the top end of one side of the side connecting plate, and a second locking hole is opened on the bottom end surface of one side of the auxiliary fastening plate. The positions of the second locking hole and the first locking hole correspond one to one, and the cross-sectional aperture of the second locking hole and the first locking hole are the same.

[0007] Compared with the related art, the four-wire needle head and needle seat assembly of the flying probe tester provided by the present invention has the following beneficial effects:

[0008] The utility model provides a four-wire needle head and needle seat assembly for a flying probe tester, which is installed on the top surfaces of both sides of a supporting chassis by arranging a side connecting plate. At this time, the third connecting hole and the second connecting hole are aligned and installed. The auxiliary fastening plate is installed on the top side of the side connecting plate, and the second locking hole is aligned and installed with the first locking hole. Then, the auxiliary fastening plate is installed on the bottom side of the side connecting plate, and the first connecting hole and the third connecting hole are aligned and installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the overall side view structure of the device of the present utility model;

[0011] Figure 3 This is a schematic diagram of the exploded structure of the device of the present invention.

[0012] Numbers in the figure: 1. Main base plate; 2. Connecting plate; 3. Support chassis; 4. Side connecting plate; 5. Fastening plate; 6. Four-wire needle; 7. First connecting hole; 8. Second connecting hole; 9. First locking hole; 10. Third connecting hole; 11. Auxiliary fastening plate; 12. Second locking hole. DETAILED DESCRIPTION Example

[0013] See also Figure 1-3The utility model provides a technical solution: a flying probe tester four-wire needle head needle seat assembly, including a main body base plate 1, a connecting plate 2 is detachably installed on the bottom end of one side of the main body base plate 1, a supporting chassis 3 is detachably installed on the bottom end of one side of the main body base plate 1 close to the connecting plate 2, and a side connecting plate 4 is detachably installed on the top ends of both sides of the supporting chassis 3. A fastening plate 5 is detachably installed on one side of the side connecting plate 4. A first connecting hole 7 is opened on one side surface of the fastening plate 5, and a four-wire needle 6 is detachably installed on the top end of one side of the side connecting plate 4. A second connecting hole 7 is opened on one side surface of the supporting chassis 3. A connecting hole 8 is provided, a first locking hole 9 is provided on the top surface of one side of the side connecting plate 4, a third connecting hole 10 is provided on the bottom surface of one side of the side connecting plate 4, the positions of the third connecting hole 10 and the second connecting hole 8 correspond one to one, the cross-sectional apertures of the third connecting hole 10 and the second connecting hole 8 are the same, an auxiliary fastening plate 11 is detachably installed on the top of one side of the side connecting plate 4, a second locking hole 12 is provided on the bottom surface of one side of the auxiliary fastening plate 11, the positions of the second locking hole 12 and the first locking hole 9 correspond one to one, and the cross-sectional apertures of the second locking hole 12 and the first locking hole 9 are the same.

[0014] In the implementation scheme, the side connecting plate 4 is installed on the top surface of both sides of the supporting chassis 3. At this time, the third connecting hole 10 and the second connecting hole 8 are aligned and installed, and the auxiliary fastening plate 11 is installed to the top side of the side connecting plate 4, and the second locking hole 12 and the first locking hole 9 are aligned and installed, and then installed to the bottom side of the side connecting plate 4 through 5, and the first connecting hole 7 and the third connecting hole 10 are aligned and installed.

[0015] Working principle:

[0016] By setting the side connecting plate 4 and installing it to the top surfaces of both sides of the supporting chassis 3, the third connecting hole 10 and the second connecting hole 8 are aligned and installed, and then installed to the top side of the side connecting plate 4 through the auxiliary fastening plate 11, and aligned and installed through the second locking hole 12 and the first locking hole 9, and then installed to the bottom side of the side connecting plate 4 through 5, and can be installed by aligning the first connecting hole 7 and the third connecting hole 10.

Claims

1. A four-wire needle head and needle seat assembly for a flying probe tester, comprising a main base plate (1), a connection plate (2) being detachably mounted on the bottom end of one side of the main base plate (1), and characterized in that: A supporting chassis (3) is detachably mounted on the bottom end of one side of the main base plate (1) close to the connecting plate (2), and side connecting plates (4) are detachably mounted on the top ends of both sides of the supporting chassis (3). A fastening plate (5) is detachably mounted on one side of the side connecting plate (4), and a first connecting hole (7) is provided on one side surface of the fastening plate (5). A four-thread needle (6) is detachably mounted on the top end of one side of the side connecting plate (4). A second connecting hole (8) is provided on one side surface of the supporting chassis (3), a first locking hole (9) is provided on the top end surface of one side of the side connecting plate (4), and a third connecting hole (10) is provided on the bottom end surface of one side of the side connecting plate (4).

2. A four-wire needle head and needle seat assembly for a flying probe tester according to claim 1, characterized in that: The positions of the third connection hole (10) and the second connection hole (8) correspond one to one, and the cross-sectional apertures of the third connection hole (10) and the second connection hole (8) are the same.

3. The four-wire needle head and needle seat assembly of a flying probe tester according to claim 1, characterized in that: An auxiliary fastening plate (11) is detachably mounted on the top end of one side of the side connecting plate (4), and a second locking hole (12) is provided on the bottom end surface of one side of the auxiliary fastening plate (11). The positions of the second locking hole (12) and the first locking hole (9) correspond one to one, and the cross-sectional apertures of the second locking hole (12) and the first locking hole (9) are the same.

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