Dual spring single action probe

Abstract

The utility model provides a double -spring single -action probe belongs to probe technical field. Double -spring single -action probe, including probe main part, probe main part includes first plunger, cylinder and second plunger, first plunger is connected with the upper end of cylinder and inserts into the cylinder, second plunger installs in the cylinder, and the cylinder includes inner chamber and first through -hole, and the second plunger is located the inner chamber bottom of cylinder and can pass through first through -hole and extend, with cylinder center as the axle between first plunger with second plunger is connected through first spring and second spring, the outer diameter of first spring is less than the inner diameter of second spring, one end of first spring is connected with first plunger, and the other end of first spring is connected with second plunger, one end of second spring is connected with first plunger, and the other end of second spring is connected with second plunger. The utility model has the advantages of prolonging the life.

Description

Technical Field

[0001] This invention belongs to the field of probe technology, specifically a double-spring single-action probe. Background Technology

[0002] Probes are contact media for electrical testing and are high-precision electronic hardware components. Existing probe structures generally include a cylinder, a plunger, and a spring. In existing single-acting probes, only one spring connects the two plungers within the cylinder, allowing the lower plunger to extend and retract. However, when the lower plunger extends and retracts from the cylinder, a certain gap exists between the cylinder and the plunger because the inner diameter of the cylinder is larger than the outer diameter of the plunger. Furthermore, the existing springs are relatively thin, causing slight wobbling into the cylinder cavity during plunger extension and retraction. This not only affects the probe's detection efficiency due to unstable extension and retraction but also may lead to collisions and product wear due to significant wobbling between the plunger and the inner wall of the cylinder, resulting in a short service life. Additionally, existing single-spring probes suffer from insufficient elasticity and short service life in high-density testing and micro-displacement applications. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned problems in existing technologies and propose a solution. The double-spring single-acting probe has the advantage of extending its service life.

[0004] The objective of this utility model can be achieved through the following technical solution: a double-spring single-acting probe, comprising a probe body, the probe body comprising a first plunger, a cylinder and a second plunger, the first plunger being connected to the upper end of the cylinder and inserted into the cylinder, the second plunger being installed in the cylinder, the cylinder comprising an inner cavity and a first through hole, the second plunger being located at the bottom of the inner cavity of the cylinder and extending out through the first through hole, the first plunger and the second plunger being connected about the center of the cylinder by a first spring and a second spring; The outer diameter of the first spring is smaller than the inner diameter of the second spring; One end of the first spring is connected to the first plunger, and the other end of the first spring is connected to the second plunger; One end of the second spring is connected to the first plunger, and the other end of the second spring is connected to the second plunger.

[0005] Preferably, the end of the first plunger away from the cylinder has a serrated connecting end.

[0006] Preferably, the first plunger, the second plunger, the first spring, and the second spring are located on the same axis.

[0007] Preferably, the bottom of the second plunger has a probe end.

[0008] Preferably, the first spring and the second spring are made of NAS604 material.

[0009] Compared with the prior art, the advantages of this utility model are: a second spring is added on the basis of the first spring, and the outer diameter of the second spring is the same as the outer diameter of the uppermost end of the second plunger, which greatly reduces the product breakage rate, extends the product service life, and makes it more practical. Attached Figure Description

[0010] Figure 1 This is a front view of the present invention.

[0011] Figure 2 This is a front sectional view of the present invention.

[0012] Figure 3 This is a front sectional view of the second plunger in this utility model when it is contracting.

[0013] In the figure, 2 is the first plunger; 21 is the serrated connecting end; 3 is the cylinder; 31 is the inner cavity; 32 is the first through hole; 33 is the first spring; 34 is the second spring; 4 is the second plunger; and 41 is the probe end. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0015] like Figures 1 to 3 As shown, a double-spring single-acting probe includes a probe body, which includes a first plunger 2, a cylinder 3, and a second plunger 4. The first plunger 2 is connected to the upper end of the cylinder 3 and inserted into the cylinder 3. The second plunger 4 is installed inside the cylinder 3. The cylinder 3 includes an inner cavity 31 and a first through hole 32. The second plunger 4 is located at the bottom of the inner cavity 31 of the cylinder 3 and can extend out through the first through hole 32. The first plunger 2 and the second plunger 4 are connected about the center of the cylinder 3 by a first spring 33 and a second spring 34. The outer diameter of the first spring 33 is smaller than the inner diameter of the second spring 34; One end of the first spring 33 is connected to the first plunger 2, and the other end of the first spring 33 is connected to the second plunger 4; One end of the second spring 34 is connected to the first plunger 2, and the other end of the second spring 34 is connected to the second plunger 4.

[0016] In this invention, both the first spring 33 and the second spring 34 are shock-absorbing springs.

[0017] By adopting the above structure, a larger second spring 34 and a smaller first spring 33 are provided between the first plunger 2 and the second plunger 4 in the inner cavity 31 of the cylinder 3. This adds a second spring 34 to the existing device, with the outer diameter of the second spring 34 being the same as the outer diameter of the lowest end of the first plunger 2 and the outer diameter of the highest end of the second plunger 4. This improves the shock absorption effect of the probe when the second plunger 4 extends and retracts, enhances probe stability, prevents directional deviation and shaking of the second plunger 4 during extension and retraction, further prevents the second plunger 4 from contacting and colliding with the inner cavity 31 of the cylinder 3, significantly reducing product wear and improving practicality. Simultaneously, by setting a dual-spring structure with the first spring 33 and the second spring 34, the coordinated operation of two sets of springs with different elastic coefficients achieves higher working stability, rebound force, and contact accuracy, enhancing elasticity and extending service life.

[0018] Specifically, such as Figures 1 to 3 As shown, the first plunger 2 has a serrated connecting end 21 at the end away from the cylinder 3.

[0019] The above structure, with the serrated connection end 21, facilitates the connection of the probe with the corresponding connection adjustment device, and makes it easy to disassemble and assemble as well as to fix the connection, resulting in a more reliable connection.

[0020] like Figures 1 to 3 As shown, the first plunger 2, the second plunger 4, the first spring 33, and the second spring 34 are located on the same axis.

[0021] like Figures 1 to 3 As shown, the bottom of the second plunger 4 has a probe end 41. By setting the probe end 41, it is easier for the probe to come into contact with the object to be detected, thus facilitating detection.

[0022] In this invention, the first spring 33 and the second spring 34 are made of NAS604 material, which is beneficial to improving the high and low temperature resistance of the first spring 33 and the second spring 34.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A double-spring single-acting probe, comprising a probe body, characterized in that, The probe body includes a first plunger (2), a cylinder (3) and a second plunger (4). The first plunger (2) is connected to the upper end of the cylinder (3) and inserted into the cylinder (3). The second plunger (4) is installed in the cylinder (3). The cylinder (3) includes an inner cavity (31) and a first through hole (32). The second plunger (4) is located at the bottom of the inner cavity (31) of the cylinder (3) and can extend out through the first through hole (32). The first plunger (2) and the second plunger (4) are connected with the cylinder (3) as the center and by a first spring (33) and a second spring (34). The outer diameter of the first spring (33) is smaller than the inner diameter of the second spring (34); One end of the first spring (33) is connected to the first plunger (2), and the other end of the first spring (33) is connected to the second plunger (4); One end of the second spring (34) is connected to the first plunger (2), and the other end of the second spring (34) is connected to the second plunger (4).

2. The double-spring single-acting probe according to claim 1, characterized in that, The first plunger (2) has a serrated connecting end (21) at the end away from the cylinder (3).

3. The double-spring single-acting probe according to claim 1, characterized in that, The first plunger (2), the second plunger (4), the first spring (33), and the second spring (34) are located on the same axis.

4. The double-spring single-acting probe according to claim 1, characterized in that, The bottom of the second plunger (4) has a probe end (41).

5. The dual-spring single-acting probe according to claim 1, characterized in that, The first spring (33) and the second spring (34) are made of NAS604 material.

Images