Novel inclined plane spring probe structure

Abstract

The utility model discloses a novel inclined plane spring probe structure, which comprises a needle head, a needle tube, a spring and a needle tail, the needle head comprises a needle tip end and a needle shaft end which are integrally formed, the needle shaft end is contacted with one end of the spring, the other end of the spring is contacted with the needle tail, the needle shaft end and the spring are both arranged in the needle tube, and the needle tip end is connected with the needle tube. The needle tip end is arranged outside the needle tube, the needle shaft end is arranged to be of a shaft slope structure, a spring plunger is arranged between the needle shaft end and the spring, the contact end of the spring plunger and the needle shaft end is arranged to be of a conical structure matched with the shaft slope structure, and the needle shaft end is tightly attached to the spring plunger. According to the utility model, the pin shaft end is tightly attached to the spring plunger end, so that the contact state of the pin shaft end and the spring plunger end is more stable, the fluctuation of resistance is reduced, and the stability of resistance is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spring probe technical field, concretely relates to a novel bevel spring probe structure. BACKGROUND

[0002] The common test probe is a spring probe which is composed of four basic components of needle, spring, needle tube and needle tail, the needle has sharp needle, catching needle, round head needle and knife type needle, and the current is transmitted from the needle to the needle tube and then to the needle tail, wherein the needle is movable, the contact state of all movable components changes every time the needle contacts the product, which leads to the change of resistance value with the state difference between components, and the contact stability between components is the key to the stability of resistance value, which reflects the performance of the probe. SUMMARY

[0003] In order to overcome the above problems, the utility model discloses a novel bevel spring probe structure, which further stabilizes the contact state between components, reduces the fluctuation of resistance, and makes the resistance value more stable.

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme of a novel bevel spring probe structure, which comprises a needle, a needle tube, a spring and a needle tail, the needle comprises an integrally formed needle tip end and a needle shaft end, the needle shaft end is in contact with one end of the spring, the other end of the spring is in contact with the needle tail, the needle shaft end and the spring are both arranged in the needle tube, the needle tip end is arranged outside the needle tube, the needle shaft end is provided with an axial bevel structure, a spring plunger is arranged between the needle shaft end and the spring, the contact end of the needle shaft end and the spring plunger is provided with a conical structure matched with the axial bevel structure, the needle shaft end and the spring plunger are tightly combined, and the bevel of the needle shaft end can be stably combined with the conical surface of the spring plunger in the movement process regardless of the rotation of the needle.

[0005] Preferably, the conical angle of the conical structure is consistent with the bevel angle of the axial bevel structure, which further stabilizes the combination of the two.

[0006] Preferably, the conical structure of the spring plunger protrudes outward, which is convenient for stable combination.

[0007] The utility model has the beneficial effects that the needle shaft end and the spring plunger end are tightly combined, the contact state of the two is more stable, the fluctuation of resistance is reduced, the stability of resistance value is greatly improved, the conductivity is better, and the utility model is not jammed, is suitable for occasions with large current and high resistance value stability requirement, and solves the problem that the resistance value of the ordinary spring probe greatly fluctuates due to vibration and deflection in work. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1A structural schematic diagram of the embodiment;

[0009] Figure 2 A chart of resistance and stability of the prior art bevel spring probe;

[0010] Figure 3 A chart of resistance and stability of the embodiment.

[0011] In the figure: 1, needle; 2, needle tube; 3, spring; 4, needle tail; 5, needle tip; 6, needle shaft end; 7, shaft bevel structure; 8, spring plunger; 9, conical structure. DETAILED DESCRIPTION

[0012] The preferred embodiment of the utility model is described in detail below in combination with the drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined.

[0013] Referring to Figure 1 As shown in the figure, the embodiment discloses a novel bevel spring probe structure, which comprises a needle 1, a needle tube 2, a spring 3 and a needle tail 4, the needle 1 comprises a needle tip 5 and a needle shaft end 6 which are integrally formed, the needle shaft end 6 is in contact with one end of the spring 3, the other end of the spring 3 is in contact with the needle tail 4, the needle shaft end 6 and the spring 3 are both arranged in the needle tube 2, the needle tip 5 is arranged outside the needle tube 2, the needle shaft end 6 is provided as a shaft bevel structure 7, a spring plunger 8 is arranged between the needle shaft end 6 and the spring 3, a contact end of the spring plunger 8 and the needle shaft end 6 is provided as a conical structure 9 which matches the shaft bevel structure 7, the needle shaft end 6 is closely attached to the spring plunger 8, the conical angle of the conical structure 9 is consistent with the bevel angle of the shaft bevel structure 7, in the movement process, no matter how the needle 1 rotates, the bevel of the needle shaft end 6 can be stably attached to the conical surface of the spring plunger 8, and the conical structure 9 of the spring plunger 8 protrudes outward.

[0014] In use, the needle tip 5 of the needle 1 contacts a chip, the needle shaft end 6 is attached to the spring plunger 8, the needle 1 is pressed down, the spring 3 is compressed by the spring plunger 8 to generate elastic force, under the action of the spring 3, the needle shaft end 6 and the spring plunger 8 are inclined to contact the inner surface of the needle tube 2, an electric signal is transmitted from the needle 1 to the needle tube 2 and then from the needle tube 2 to the needle tail 4, forming the action of a carrier, after the transmission is completed, the needle 1 will rebound to the initial position under the action of the elastic force; the above process is repeated for each signal transmission, and the consistency of each signal transmission can be ensured by the structure.

[0015] Referring to Figures 2-3Compared with the resistance and stability chart of the conventional structure and the resistance and stability chart of the utility model, it can be obviously seen that the resistance and stability of the utility model are improved a lot.

[0016] The above embodiments are only for illustrating the technical concept and characteristics of the utility model, and the purpose is to enable those skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model, and any equivalent changes or modifications according to the spirit and essence of the utility model shall be covered in the protection scope of the utility model.

Claims

1. A novel inclined spring probe structure, comprising a needle head, a needle tube, a spring, and a needle tail, wherein the needle head includes an integrally formed needle tip and a needle shaft end, the needle shaft end contacts one end of the spring, the other end of the spring contacts the needle tail, the needle shaft end and the spring are both housed inside the needle tube, and the needle tip is positioned outside the needle tube, characterized in that, The needle shaft end is configured with a sloping shaft structure, and a spring plunger is provided between the needle shaft end and the spring. The contact end between the spring plunger and the needle shaft end is configured with a conical structure that matches the sloping shaft structure, and the needle shaft end and the spring plunger are in close contact.

2. The novel inclined spring probe structure according to claim 1, characterized in that, The cone angle of the conical structure is the same as the slope angle of the axial inclined plane structure.

3. The novel inclined spring probe structure according to claim 1, characterized in that, The conical structure of the spring plunger protrudes outward.

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