Vibration-resistant contact structure for a tuning fork terminal

Abstract

The utility model relates to a vibration resistance contact structure of tuning fork type terminal, including setting from outside to inside in proper order: needle cylinder, transition cover shell, can be dismantled and connect in needle cylinder, and the needle head of sliding insertion in transition cover shell, one end of needle head insertion transition cover shell is connected with spring, and spring precompression is equipped in needle head tail part and provides contact pressure to resist contact fluctuation under vibration environment, the utility model discloses precompression for needle head provides contact pressure, can effectively resist contact fluctuation under vibration environment, guarantees signal link stable, and the reliability of terminal in vibration environment has been improved.

Description

Technical Field

[0001] This utility model belongs to the field of probe technology, and specifically relates to the vibration-resistant contact structure of tuning fork terminals. Background Technology

[0002] In the field of chip testing, probes are key components connecting chips to testing equipment, and their contact stability and reliability are crucial. However, the contact structure of existing tuning fork terminals has problems in practical applications.

[0003] Traditional tuning fork terminals, due to the lack of effective vibration-resistant design, are prone to fluctuations in the contact between the pin and the pad under vibration, resulting in unstable signal transmission and affecting the accuracy of test results. Utility Model Content

[0004] This utility model addresses the problems of existing technologies by providing a vibration-resistant contact structure for tuning fork terminals. The specific technical solution is as follows:

[0005] The vibration-resistant contact structure of the tuning fork terminal includes the following components arranged sequentially from the outside in:

[0006] Syringe;

[0007] Transition sleeve, detachably connected to the syringe;

[0008] A needle is slidably inserted into a transition sleeve. One end of the needle inserted into the transition sleeve is connected to a spring. The spring is pre-compressed at the tail of the needle to provide contact pressure to resist contact fluctuations in a vibration environment.

[0009] As a further technical solution of this utility model, the transition sleeve and the needle are screwed together, the outer surface of the transition sleeve is provided with an external thread, and the inner surface of the syringe is provided with an internal thread that matches the external thread.

[0010] As a further technical solution of this utility model, in the installed state, the transition sleeve is at least partially exposed.

[0011] As a further technical solution of this utility model, the needle output end is provided with a contact section, the contact section includes a plurality of circumferentially evenly arranged tuning fork structures, the tuning fork structures having a tip facing the solder pad.

[0012] As a further technical solution of this utility model, the tail end of the needle has a connecting section for contacting a spring, and a pressure sensor is installed in the connecting section.

[0013] As a further technical solution of this utility model, a diameter reduction section is provided between the connecting section and the contact section. The diameter of the diameter reduction section is smaller than that of the connecting section. A sphere is connected to the outside of the diameter reduction section, and the outer wall of the sphere is attached to the inner wall of the transition shell.

[0014] As a further technical solution of this utility model, a blocking section is provided between the radial reduction section and the contact section. The blocking section is attached to the inner wall of the transition sleeve. The opening of the transition sleeve has a stepped structure, and the blocking section presses against the stepped structure.

[0015] As a further technical solution of this utility model, there is an extension section between the blocking section and the contact section, the extension section is inserted into the transition sleeve, and there is a gap between the inserted part of the extension section and the transition sleeve.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) Innovative anti-vibration design: By pre-compressing the spring to provide contact pressure to the needle, it can effectively resist contact fluctuations in the vibration environment, ensure the stability of the signal link, and improve the reliability of the terminal in the vibration environment.

[0018] (2) Detachable structure design: The transition shell, syringe, and needle are all connected by screws, which enables convenient replacement of the needle without disassembling the entire syringe, thus improving maintenance efficiency and reducing usage costs.

[0019] (3) Multi-point contact structure: The contact section at the output end of the needle is equipped with multiple circumferentially evenly distributed tuning fork structures to form a multi-point contact method, which significantly enhances the stability of contact with the solder pad.

[0020] (4) Pressure monitoring and control: A pressure sensor is installed in the connecting section at the tail end of the needle to monitor the contact pressure in real time, avoid excessive pressure from damaging the solder pad, and achieve precise control of the contact pressure.

[0021] (5) Structural optimization design: The reduced diameter section decreases the contact area between the needle and the transition sleeve, reducing sliding resistance; the sphere ensures the coaxiality between the needle and the transition sleeve; the step structure at the opening of the blocking section and the transition sleeve limits the range of motion of the needle; the gap between the extension section and the transition sleeve allows relative movement. These structural designs work together to further improve the performance and reliability of the terminal. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of the vibration-resistant contact structure of the tuning fork terminal is shown.

[0023] Figure 2 A cross-sectional structural diagram of the transition sleeve and the needle is shown;

[0024] Figure 3 A schematic diagram of the cross-sectional structure of the needle is shown.

[0025] Legend:

[0026] 100. Syringe; 200. Transition sleeve; 300. Needle; 301. Connecting section; 302. Reduction section; 303. Blocking section; 304. Extension section; 305. Contact section; 306. Sphere; 310. Spring. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0028] Figure 1 A schematic diagram of the overall structure of the vibration-resistant contact structure of the tuning fork terminal is shown. Figure 2 A cross-sectional structural schematic diagram of the transition sleeve 200 and the needle 300 is shown; Figure 3 A cross-sectional structural diagram of the needle 300 is shown.

[0029] Figure 1 In this design, the vibration-resistant contact structure of the tuning fork terminal is used to maintain the stability of chip testing in conjunction with the pads. It includes a syringe 100, a transition sleeve 200, and a needle 300 arranged sequentially from the outside to the inside. That is, the diameter and width of the syringe 100, the transition sleeve 200, and the needle 300 decrease in that order. The syringe 100 serves as the mounting part and is used to form a connector structure with the base. The transition sleeve 200 serves as the receiving part and is connected between the syringe 100 and the needle 300. The needle 300 serves as the output part and is used to contact the pads.

[0030] Figure 2 In the middle, one end of the needle 300 inserted into the transition sleeve 200 is connected to a spring 310. When the spring 310 is compressed, it can drive the needle 300 to press against the solder pad, thereby resisting contact fluctuations under vibration environment and ensuring the stability of signal link;

[0031] The transition sleeve 200 and the needle 300 are screwed together; this ensures both the detachable connection of the transition sleeve 200 and the needle 300 and their stability after installation. After the whole assembly is connected to the base, the needle 300 can be replaced by disassembling the transition sleeve 200 without disassembling the entire syringe 100, making needle replacement more convenient. In actual use, the outer surface of the transition sleeve 200 is provided with an external thread, and the inner surface of the syringe 100 is provided with an internal thread that matches the external thread. When the two rotate relative to each other, they simultaneously undergo axial relative displacement, thereby achieving disassembly.

[0032] It should be noted that, in the installed state, the transition sleeve 200 is at least partially exposed; the operator can hold the exposed part of the transition sleeve 200 to facilitate relative rotation between the transition sleeve 200 and the syringe 100.

[0033] Figure 3In the needle 300, there are a connecting section 301, a constriction section 302, a blocking section 303, an extension section 304, and a contact section 305 arranged sequentially in one direction, wherein:

[0034] The connecting section 301 is equipped with a pressure sensor, which can monitor the contact pressure of the needle 300 on the pad at all times to avoid damage to the pad due to excessive contact pressure. The connecting section 301 is in contact with the spring 310.

[0035] The diameter of the constriction section 302 is smaller than that of the connecting section 301, thereby reducing the contact area between the insertion part of the needle 300 into the transition sleeve 200 and the transition sleeve 200, and avoiding excessive sliding resistance when the needle 300 slides relative to the transition sleeve 200. A ball 306 is connected to the outside of the constriction section 302, and the outer wall of the ball 306 fits against the inner wall of the transition sleeve 200. The ball 306 fills the gap between the constriction section 302 and the transition sleeve 200, ensuring that the constriction section 302 can always be coaxial during the movement within the transition sleeve 200, and ensuring the coaxiality of the needle 300 and the transition sleeve 200.

[0036] The blocking section 303 fits against the inner wall of the transition sleeve 200. The opening of the transition sleeve 200 has a stepped structure, and the blocking section 303 presses against the stepped structure. By utilizing the blocking section 303 and the stepped structure at the opening of the transition sleeve 200, the blocking section 303 can be restricted from detaching from the transition sleeve 200, so that the needle 300 can only move into the transition sleeve 200.

[0037] The extension section 304 is partially inserted into the transition sleeve 200, and there is a gap between the inserted part of the extension section 304 and the transition sleeve 200; this gap allows relative movement between the transition sleeve 200 and the extension section 304.

[0038] The contact section 305 includes multiple circumferentially evenly arranged tuning fork structures, each with a tip facing the pad; the multiple tuning fork structures are used to form a multi-point contact with the pad, ensuring contact stability.

[0039] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A vibration-resistant contact structure for tuning fork terminals, characterized in that, Including those set from the outside in: Syringe (100); The transition sleeve (200) is detachably connected inside the syringe (100); A needle (300) is slidably inserted into a transition sleeve (200). One end of the needle (300) inserted into the transition sleeve (200) is connected to a spring (310). The spring (310) is pre-compressed and installed at the tail of the needle (300) to provide contact pressure to resist contact fluctuations in a vibration environment.

2. The vibration-resistant contact structure of the tuning fork terminal according to claim 1, characterized in that, The transition sleeve (200) and the needle (300) are screwed together. The outer surface of the transition sleeve (200) is provided with an external thread, and the inner surface of the syringe (100) is provided with an internal thread that matches the external thread.

3. The vibration-resistant contact structure of the tuning fork terminal according to claim 2, characterized in that: In the installed state, the transition sleeve (200) is at least partially exposed.

4. The vibration-resistant contact structure of the tuning fork terminal according to claim 3, characterized in that: The output end of the needle (300) is provided with a contact section (305), the contact section (305) includes a plurality of circumferentially evenly arranged tuning fork structures, the tuning fork structures having a tip facing the pad.

5. The vibration-resistant contact structure of the tuning fork terminal according to claim 3, characterized in that: The needle (300) has a connecting section (301) for contacting a spring (310) at its tail end, and a pressure sensor is installed in the connecting section (301).

6. The vibration-resistant contact structure of the tuning fork terminal according to claim 5, characterized in that: A diameter reduction section (302) is provided between the connecting section (301) and the contact section (305). The diameter of the diameter reduction section (302) is smaller than that of the connecting section (301). A sphere (306) is connected to the outside of the diameter reduction section (302). The outer wall of the sphere (306) is attached to the inner wall of the transition shell (200).

7. The vibration-resistant contact structure of the tuning fork terminal according to claim 6, characterized in that: A blocking section (303) is provided between the radial reduction section (302) and the contact section (305). The blocking section (303) fits against the inner wall of the transition sleeve (200). The opening of the transition sleeve (200) has a stepped structure, and the blocking section (303) presses against the stepped structure.

8. The vibration-resistant contact structure of the tuning fork terminal according to claim 7, characterized in that: An extension section (304) is provided between the blocking section (303) and the contact section (305), the extension section (304) being partially inserted into the transition sleeve (200), and a gap being provided between the inserted portion of the extension section (304) and the transition sleeve (200).

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