Threaded large-current test probe

Abstract

The utility model relates to the technical field of test probes, in particular to a threaded large-current test probe, which comprises a probe assembly, a guide rod is arranged outside the probe assembly, a spring is arranged inside the probe assembly, the probe is coaxial with the guide rod and can slide in the guide rod, a fixed table is arranged at the top end of the probe, and the fixed table is fixed on the guide rod. A replaceable needle sleeve is arranged outside the guide rod, and the guide rod is connected with the needle sleeve through threads. The utility model has the advantages that: firstly, the screw thread type design is adopted, the installation and fixation mode is firmer, the phenomenon of looseness is avoided in the repeated test pressing process, the problem of unstable test current and open voltage caused by the bias voltage of the probe is avoided, and the probe can be in better contact with a main grid line; and secondly, the frequency of repeated disqualification in the test is reduced, the service life is doubled compared with the conventional service life, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test probe technical field, concretely is a thread type large current test probe. BACKGROUND

[0002] In today's rapid development of automation technology, in order to further improve production and detection efficiency, many factories usually adopt current test probe to carry out quality detection to integrated circuit board or relevant electronic components, but the current test probe still has some problems in actual use, probe may be damaged due to the operation error during the depression, thereby reduce the service life, increase unnecessary production cost, second, when detecting complex circuit, many different types of probes are needed to operate, and the current test probe does not have the function of convenient installation, which affects the efficiency of subsequent work to some extent. SUMMARY

[0003] The utility model discloses a thread type large current test probe to solve the problems in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a thread type large current test probe, including probe assembly 1, the outside of probe assembly 1 is guide rod 6, its inside is equipped with spring, probe 4 is coaxial with guide rod 6 and can slide in it, the top of probe 4 is equipped with fixed platform 3, its characterized in that: the guide rod 6 is equipped with replaceable needle cover 2, and guide rod 6 and needle cover 2 are connected through thread.

[0005] Further, the top of guide rod 6 is equipped with screw rod 7, and the tail end is equipped with limiting platform 5, and limiting platform 5 is equipped with step or notch convenient to rotate.

[0006] Further, the length of guide rod 6 is 3 times the length of screw rod 7.

[0007] Further, the needle cover 2 is equipped with guide sleeve 8 and internal thread 9 matched with guide rod 6 and screw rod 7 respectively, and the length is equal.

[0008] Further, the guide rod 6 is closely matched with guide sleeve 8.

[0009] Further, the internal thread 9 is equipped with exhaust hole 10 below, and the top of needle cover 2 is equipped with recess 11.

[0010] Compared with the prior art, the utility model have beneficial effects: first, the design of thread type, the installation fixed mode is more firm, avoids the phenomenon of easy loosening in the process of repeatedly testing compression, avoids the problem of unstable test current, open pressure caused by probe pressure deviation, can better contact with the main grid line, second, reduce the frequency of repeatability unqualified in the test, the service life is two times than conventional, save the cost. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structural schematic diagram of the utility model;

[0012] Figure 2 It is Figure 1 It is the structural schematic diagram of the probe assembly (1);

[0013] Figure 3 It is Figure 1 It is the structural schematic diagram of the needle sleeve (2).

[0014] In the drawing: 1, probe assembly;2, needle sleeve;3, fixed platform;4, probe;5, limiting platform;6, guide rod;7, screw;8, guide sleeve;9, internal thread;10, exhaust hole;11, recess. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0016] Please refer to Figure 1 The utility model provides a kind of technical scheme: a thread type large current test probe, including probe assembly 1, the outside of probe assembly 1 is guide rod 6, its inside is equipped with spring, probe 4 is coaxial with guide rod 6 and can slide in it, and the top of probe 4 is equipped with fixed platform 3.

[0017] Guide rod 6 is equipped with replaceable needle sleeve 2 outside, and guide rod 6 and needle sleeve 2 are connected by thread, so that it avoids that probe assembly 1 and part directly contact, when damage appears after rubbing, it can be directly replaced needle sleeve 2.

[0018] The top of guide rod 6 is equipped with screw 7, and tail end is equipped with limiting platform 5, and limiting platform 5 is equipped with step or notch for easy rotation, and in order to improve coaxiality, the length of guide rod 6 is 3 times the length of screw 7.

[0019] The needle sleeve 2 is provided with a guide sleeve 8 and an internal thread 9 which are matched with the guide rod 6 and the screw rod 7 respectively, and the lengths are equal. In order to improve the accuracy, the guide rod 6 is tightly matched with the guide sleeve 8. In order to better and faster installation, the exhaust hole 10 is arranged below the internal thread 9, and the top end of the needle sleeve 2 is provided with a groove 11.

[0020] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A threaded high-current test probe, comprising a probe assembly (1), wherein the probe assembly (1) has an outer guide rod (6) and an inner spring, a probe (4) is coaxial with the guide rod (6) and can slide within it, and a fixed platform (3) is provided at the top of the probe (4), characterized in that: The guide rod (6) is provided with a replaceable needle sleeve (2), and the guide rod (6) and the needle sleeve (2) are connected by threads.

2. The threaded high-current test probe according to claim 1, characterized in that: The guide rod (6) is provided with a screw (7) at the top and a limiting platform (5) at the tail end. The limiting platform (5) is provided with a step or notch to facilitate rotation.

3. A threaded high-current test probe according to claim 2, characterized in that: The length of the guide rod (6) is three times the length of the screw (7).

4. A threaded high-current test probe according to claim 1, characterized in that: The needle sleeve (2) is provided with a guide sleeve (8) and an internal thread (9) that respectively cooperate with the guide rod (6) and the screw (7), and the lengths are equal.

5. A threaded high-current test probe according to claim 2, characterized in that: The guide rod (6) and the guide sleeve (8) are tightly fitted together.

6. A threaded high-current test probe according to claim 4, characterized in that: The internal thread (9) is provided with an exhaust hole (10) below it, and the top of the needle sleeve (2) is provided with a groove (11).

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