High-temperature-resistant replaceable elastic pin needle
By using a brass needle tube and a PEEK needle cap combined with a retaining ring for fixation, the problems of loosening and material scratches of elastic PIN pins under high temperature environments are solved, achieving efficient and stable PIN pin installation and replacement, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 承盛航空测试科技(苏州)有限公司
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-05
AI Technical Summary
Existing elastic pins are prone to loosening and unstable fixation under high temperature environments, and the material is easily scratched by the product. Traditional replacement methods affect testing efficiency and cost.
It uses a brass needle tube and a PEEK needle cap, combined with a retaining ring for fixation, eliminating the need for an outer tube. It improves high-temperature resistance and replacement methods, uses a PEEK needle cap for heat insulation, and has nickel-plated tips on the brass needles to enhance wear resistance and corrosion resistance.
It improves the installation efficiency and stability of PIN pins, avoids poor testing caused by loosening, reduces costs, and enhances high-temperature resistance.
Smart Images
Figure CN224328928U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to the field of PIN pin technology, and more specifically to a high-temperature resistant, replaceable elastic PIN pin. Background Technology
[0002] In existing technology, conventional elastic pins are assembled from four parts: the needle tip (Brass), the needle tube (Brass), the spring (SUS), and the needle retainer (SUS). First, conventional elastic pins are used in environments around 150℃. Because the needle tip is made of Brass material, which has good thermal conductivity, the contact point of the product is easily affected during testing, but it is also easy to scratch the product. Second, the installation method of elastic pin testing is to insert the elastic pin into the sleeve, and the sleeve is tightly riveted into the fixture. The insertion and extraction force of the sleeve is used to control the replacement of the probe. Since the elastic force is about 300g during testing, the elastic pin will become unstable and loose under long-term vibration. At the same time, when replacing a new pin, the sleeve is easy to be pulled out, causing the fixture hole to become larger and affecting subsequent tests.
[0003] As motherboard testing requirements evolve, the demand for spring-loaded pins is increasing, placing greater emphasis on their heat insulation and replacement methods. Initially, the standard method of securing the spring-loaded pins with sleeves and using Brass tips suffices for testing. Now, the need is for more convenient replacement methods and better heat insulation and high-temperature resistance. Existing Brass materials have poor heat dissipation and pose a risk of scratching test points. Furthermore, each replacement of a new spring-loaded pin affects the sleeve insertion and extraction force, increasing the risk of the pin popping out. Therefore, existing installation methods and heat insulation materials are no longer sufficient, leading to reduced production efficiency and increased costs for customers. To address this, we propose a high-temperature resistant, replaceable spring-loaded pin. Utility Model Content
[0004] The purpose of this invention is to provide a high-temperature resistant replaceable elastic PIN pin, which eliminates the need for a sleeve and replaces it with a retaining ring, greatly improving installation efficiency. Furthermore, the change from inserting the PIN pin into the sleeve to using a retaining ring avoids testing defects caused by loose PIN pins; thus solving the technical problems mentioned in the background section.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A high-temperature resistant replaceable elastic pin includes a brass needle tube, a brass needle tip installed inside the brass needle tube, and a spring sleeved on the outside of the brass needle tip. A needle tip retainer is fixedly connected to the bottom of the brass needle tip outside the brass needle tube, and a needle tip cap is sleeved on the top of the brass needle tip. A needle tube fixing retainer is sleeved on the outside of the brass needle tube near the needle tip retainer.
[0007] As a further technical solution of this utility model, a jig plate is installed on the outside of the brass needle tube, and an installation hole is opened through the inside of the jig plate. The brass needle tube is inserted into the installation hole of the jig plate and is limited by the needle tube fixing ring at its bottom.
[0008] As a further technical solution of this utility model, a groove is integrally formed at the bottom side of the brass needle tube, and the needle tube fixing ring is opened by snap ring pliers and inserted into the groove for fixation.
[0009] As a further technical solution of this utility model, the needle retainer is sleeved on the bottom of the brass needle, and the diameter of the needle retainer is larger than the opening size at the bottom of the brass needle tube.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] This utility model eliminates the outer tube fixing method and replaces it with a retaining ring. The client only needs to drill a hole in the jig plate, insert the elastic PIN needle, and then lock the needle tube fixing retaining ring on the needle tube to effectively fix the PIN needle.
[0012] This utility model changes the previous sleeve fixation to a retaining ring fixation. The needle tube fixing retaining ring is a standard part that can be clamped with a special tool. It can be inserted by aligning it with the brass needle tube slot, which greatly improves the installation efficiency. At the same time, the original method of inserting the PIN needle into the sleeve has been changed to the retaining ring fixation method, avoiding test failures caused by loose PIN needles. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This utility model Figure 1 Usage status diagram.
[0015] In the diagram: 1-Brass needle tube, 2-Brass needle tip, 3-Spring; 4-Needle retainer; 5-Needle cap; 6-Needle tube retainer. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-2 In this embodiment of the present invention, a high-temperature resistant replaceable elastic PIN needle includes a brass needle tube 1, a brass needle tip 2 is installed inside the brass needle tube 1, and a spring 3 is sleeved on the outside of the brass needle tip 2. The spring 3 provides elastic deformation by extension and contraction. A needle tip retaining ring 4 is fixedly connected to the bottom of the brass needle tip 2 on the outside of the brass needle tube 1, and a needle tip cap 5 is sleeved on the top of the brass needle tip 2. A needle tube fixing retaining ring 6 is sleeved on the outside of the brass needle tube 1 near the needle tip retaining ring 4.
[0018] In this example, a jig plate is installed on the outside of the brass needle tube 1, and an installation hole is opened through the inside of the jig plate. The brass needle tube 1 is inserted into the installation hole of the jig plate and is limited by the needle tube fixing ring 6 at its bottom.
[0019] By adopting the above technical solution, this method of fixing the PIN pins is beneficial for testing product stability, ensuring that the PIN pins do not fall off or wobble during the testing cycle. Because the tip of the brass needle 2 uses a PEEK material needle cap 5 to effectively insulate against heat conduction, the probe temperature does not affect the test point during testing. The PEEK material will not scratch the product after testing. This design achieves high-temperature resistance and replaceability. The needle cap 5 at the probe test end is made of PEKK material, which has better hardness and durability. The lower end of the needle is made of nickel-plated brass, resulting in better surface finish, smoother testing, and increased wear resistance and corrosion resistance, thus increasing product stability.
[0020] In this example, the brass needle tube 1 has an integrally formed groove at the bottom of its side, and the needle tube fixing ring 6 is fixed by being opened by snap ring pliers and inserted into the groove.
[0021] By adopting the above technical solution, the needle fixing ring 6 is made of SUS material, which has high hardness and is not easy to fall off, greatly improving the safety of use and reducing the cost.
[0022] In this example, the needle retainer 4 is sleeved on the bottom of the brass needle 2, and the diameter of the needle retainer 4 is larger than the opening size at the bottom of the brass needle tube 1;
[0023] By adopting the above technical solution, the needle retainer 4 ensures that the upper test end needle cap 5 and the brass needle tube 1 always maintain opposite forces, thus maintaining a stressed state. At the same time, the needle retainer 4 can fix the brass needle 2 to prevent it from falling off, and the PEEK material of the needle cap 5 at the top of the brass needle 2 is brought into contact with the test object by the force of the spring 3.
[0024] The working principle of this utility model is as follows: During use, the PIN needle is inserted into the mounting hole of the fixture plate. The needle tube fixing ring 6 is opened by using snap ring pliers and then inserted into the groove of the brass needle tube 1 to fix the brass needle tube 1 on the fixture. At the same time, the needle cap 5 is made of PEEK material. The elastic PIN needle is pushed out of the fixture by the reaction force of the needle cap 5 and the spring 3.
[0025] The entire PIN needle eliminates the outer tube fixing method and replaces the fixing method with a retaining ring. The client only needs to drill a hole in the jig plate, insert the spring PIN needle, and lock the needle tube fixing retaining ring 6 on the brass needle tube 1 to effectively fix the PIN needle.
[0026] Furthermore, the needle tube fixing ring 6 is a standard part that can be clamped with a special tool. It can be inserted into the slot of the brass needle tube 1, which greatly improves the installation efficiency. At the same time, the original method of inserting the PIN needle into the sleeve has been changed to the fixing method of the ring, avoiding test failures caused by loose PIN needles.
[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A high-temperature resistant, replaceable elastic pin, characterized in that: The device includes a brass needle tube (1), a brass needle tip (2) is installed inside the brass needle tube (1), and a spring (3) is sleeved on the outside of the brass needle tip (2). A needle retainer (4) is fixedly connected to the bottom of the brass needle tip (2) on the outside of the brass needle tube (1), and a needle cap (5) is sleeved on the top of the brass needle tip (2). A needle tube fixing retainer (6) is sleeved on the outside of the brass needle tube (1) near the needle retainer (4).
2. The high-temperature resistant replaceable elastic pin according to claim 1, characterized in that: A fixture plate is installed on the outside of the brass needle tube (1). An installation hole is opened through the inside of the fixture plate. The brass needle tube (1) is inserted into the installation hole of the fixture plate and is limited by the needle tube fixing ring (6) at its bottom.
3. The high-temperature resistant replaceable elastic pin according to claim 2, characterized in that: The brass needle tube (1) has an integrally formed groove at the bottom of its side. The needle tube fixing ring (6) is opened by snap ring pliers and inserted into the groove for fixation.
4. The high-temperature resistant replaceable elastic pin according to claim 1, characterized in that: The needle retainer (4) is fitted onto the bottom of the brass needle (2), and the diameter of the needle retainer (4) is larger than the opening size at the bottom of the brass needle tube (1).