20-micron wire needle jig

Abstract

The utility model discloses a 20-micron wire needle jig, which belongs to the technical field of circuit board test jigs and comprises a Block disc arranged on a base aluminum plate and used for fixing wire needle electrodes, a wire coil aluminum plate supporting layer positioned on the base aluminum plate, a wire coil, a needle disc guide layer and a needle disc panel, wherein the wire coil aluminum plate supporting layer is fixed on the base aluminum plate through a screw, the wire coil, the needle dial guiding layer and the needle dial panel are integrally fixed with the wire coil aluminum plate supporting layer through a screw which sequentially penetrates through the wire coil, the needle dial guiding layer and the needle dial panel, and the needle dial panel is provided with a hollow part which is used for avoiding a protruded welding spot; seven probe guide layers are arranged between the wire coil and the needle disc panel, and the needle disc panel, the seven probe guide layers and the wire coil are fixed into a whole through screws sequentially penetrating through the needle disc panel, the seven probe guide layers and the wire coil. According to the scheme, the hole site precision and the detection efficiency are improved.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board testing fixture technology, and provides a 20-micron needle fixture that improves hole position accuracy and testing efficiency. Background Technology

[0002] The high-precision adjustable 25-micron wire needle fixture disclosed in Chinese Patent Application No. 2022235182490 of this patent applicant achieves a minimum probe size of 0.025mm and a minimum hole edge distance of 0.008mm, making it easy to operate during circuit board testing and shortening the time for changing bent needles. However, when testing high-end CPU chip boards in some high-end customized equipment (such as CPU chips in the Leyard GATS series), the high-precision adjustable 25-micron wire needle fixture has the problem of poor hole position accuracy, resulting in prominent puncture problems during later testing and failing to meet the testing requirement of a 0.035mm measurement point spacing, thus resulting in low testing efficiency. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a 20-micron thread needle fixture, which aims to solve the problems of poor hole position accuracy and low detection efficiency of existing thread needle fixtures.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model provides a 20-micron thread needle fixture, including a Block disk for fixing the thread needle electrode on a base aluminum plate, a thread spool aluminum plate support layer, a thread spool, a needle spool guide layer, and a needle spool panel located on the base aluminum plate; wherein: the thread spool aluminum plate support layer, the thread spool, the needle spool guide layer, and the needle spool panel are arranged sequentially from bottom to top, the thread spool aluminum plate support layer is fixed to the base aluminum plate by screws, and the screws passing through the thread spool, the needle spool guide layer, and the needle spool panel are fixed to the thread spool aluminum plate support layer as a whole, and the needle spool panel has a hollowed-out part to avoid protruding solder joints;

[0006] A seven-layer probe guide layer is provided between the spool and the needle plate panel. Screws that pass through the needle plate panel, the seven-layer probe guide layer and the spool in sequence fix the needle plate panel, the seven-layer probe guide layer and the spool into one unit.

[0007] To improve the assemblability and alignment accuracy of the fixture, the above solution further includes: locking holes and alignment holes provided on the base aluminum plate.

[0008] To facilitate the handling of the fixture, the above solution further includes: an aluminum plate handle integrally attached to one side wall of the base aluminum plate.

[0009] To facilitate connection with the testing machine during testing, the above solution further includes: an aluminum plate block disk is provided on the aluminum plate of the base.

[0010] To protect the reel 3, the above solution further includes: a reel cover plate is provided on the reel.

[0011] The beneficial effects of this utility model are:

[0012] Due to the aforementioned structure, the minimum drill hole diameter reaches 0.022mm, and the minimum hole edge distance reaches 0.006mm, allowing a 20µm probe to pass through. This meets the customer's requirement for a minimum test point spacing of 0.035mm. The probe plate panel has a cutout to avoid protruding solder joints, preventing damage to the customer's product solder balls during testing. This improves hole positioning accuracy and testing efficiency.

[0013] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a top view of the structure of this utility model.

[0017] Figure 3 This is a structural schematic diagram of the present invention viewed from below.

[0018] Reference numerals: 1. Needle plate panel; 2. Needle plate guide layer; 3. Thread spool; 4. Thread spool cover plate; 5. Thread spool aluminum plate support layer; 6. Probe; 7. Wire; 8. Block spool; 9. Base aluminum plate; 10. Lock hole; 11. Aluminum plate Block spool; 12. Aluminum plate handle; 13. Probe guide layer; 14. Alignment hole. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Where there is no conflict, the following embodiments and features can be combined with each other.

[0020] Furthermore, the reference numbers and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0021] like Figures 1 to 3 As shown, the present invention relates to a 20-micron needle fixture, comprising a Block disc 8 for fixing needle electrodes, disposed on a base aluminum plate 9, a thread disc aluminum plate support layer 5, a thread disc 3, a needle disc guide layer 2, and a needle disc panel 1 located on the base aluminum plate 9; wherein: the thread disc aluminum plate support layer 5, the thread disc 3, the needle disc guide layer 2, and the needle disc panel 1 are arranged sequentially from bottom to top, the thread disc aluminum plate support layer 5 is fixed to the base aluminum plate 9 by screws, and the screws passing through the thread disc 3, the needle disc guide layer 2, and the needle disc panel 1 in sequence fix the thread disc 3, the needle disc guide layer 2, and the needle disc panel 1 to the thread disc aluminum plate support layer 5 as a whole, and the needle disc panel 1 has a hollowed-out portion to avoid protruding solder joints;

[0022] A seven-layer probe guide layer 13 is provided between the thread spool 3 and the needle plate panel 1. Screws passing sequentially through the needle plate panel 1, the seven-layer probe guide layer 13, and the thread spool 3 secure the needle plate panel 1, the seven-layer probe guide layer 13, and the thread spool 3 into a single unit. In this embodiment, the block tray 8 is fixed to the base aluminum plate 9 with screws. In this embodiment, the needle plate panel 1 is made of S8000 material.

[0023] To improve the assemblability of the fixture and the alignment accuracy, in the above embodiment, preferably, the base aluminum plate 9 is provided with a locking hole 10 and an alignment hole 14.

[0024] To facilitate the handling of the fixture, in the above embodiment, preferably, an aluminum plate handle 12 integral with the base aluminum plate 9 is fixed on one side wall.

[0025] To facilitate connection with the testing machine during testing, in the above embodiment, preferably, an aluminum plate block disk 11 is provided on the base aluminum plate 9.

[0026] To protect the reel 3, in the above embodiment, preferably, the reel 3 is provided with a reel cover plate 4.

[0027] In the above embodiments, all components are commercially available products, and the needle plate panel 1 is made of imported S8000 material.

[0028] The testing process of this scheme is as follows: the probe 6 passes through the seven probe guide layers 13 and the needle plate guide layer 2 from top to bottom and then protrudes from the back of the needle plate guide layer 2. The tail of the probe 6 contacts the wire plane of the wire plate 3. One end of the wire 7 passes through the wire plate 3 and makes electrical contact with the probe 6. The other end of the wire 7 is soldered to the block plate 8 through the hollow part in the middle and contacts the test equipment. The test is carried out through the test program.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A 20-micron wire needle jig, comprising a Block disc (8) for fixing the wire needle electrode, a wire disc aluminum plate support layer (5), a wire disc (3), a needle disc guide layer (2) and a needle disc panel (1) located on the base aluminum plate (9); characterized in that: The wire disc aluminum plate support layer (5), wire disc (3), needle disc guide layer (2) and needle disc panel (1) are sequentially arranged from bottom to top, the wire disc aluminum plate support layer (5) is fixed on the base aluminum plate (9) by screws, the wire disc (3), needle disc guide layer (2) and needle disc panel (1) are fixed as a whole with the wire disc aluminum plate support layer (5) by screws sequentially penetrating the wire disc (3), needle disc guide layer (2) and needle disc panel (1), the needle disc panel (1) has a hollow part with a position-avoiding protruding welding point; Seven probe guide layers (13) are arranged between the wire disc (3) and the needle disc panel (1), the needle disc panel (1), seven probe guide layers (13) and wire disc (3) are fixed as a whole by screws sequentially penetrating the needle disc panel (1), seven probe guide layers (13) and wire disc (3).

2. The 20-micron wire needle jig of claim 1, wherein: The base aluminum plate (9) is provided with a lock hole (10) and a position alignment hole (14).

3. The 20 micron wire needle fixture of claim 1 or 2, wherein: An aluminum plate handle (12) is fixed on one side wall of the base aluminum plate (9) and is integrated with the base aluminum plate (9).

4. The 20-micron wire gauge of claim 1 or 2, wherein: The base aluminum plate (9) is provided with an aluminum plate Block disc (11).

5. The 20-micron wire needle jig of claim 1, wherein: The wire disc (3) is provided with a wire disc cover plate (4).

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