Pogo probe with replaceable probe head

Abstract

The pogo probe comprises a needle cylinder, a needle inserted from the front end of the needle cylinder and a spring installed in the needle cylinder, the front end of the spring abuts against the tail of the needle, the inner wall of the needle cylinder is provided with a limiting protrusion, a split groove is formed in the limiting protrusion, a cantilever beam is formed in the split groove, and the cantilever beam is connected with the needle cylinder. The tail portion of the needle head is provided with a limiting step, the diameter of the limiting step is larger than the inner diameter of the limiting protrusion, in the inserting and pulling process of the needle head, the limiting step passes through the limiting protrusion, the cantilever beam can bounce off outwards, and when the needle head is inserted into the needle cylinder, the limiting protrusion is clamped on the front side of the limiting step. According to the pogo probe with the replaceable probe head, the split groove is formed in the riveting point or the rolling riveting position, the cantilever beam structure is formed in the split groove, the riveting point or the rolling riveting position is used for clamping the tail of the probe head, and when the probe head is inserted and pulled, the cantilever beam can bounce outwards, so that the insertion and pulling replacement function of the probe head is realized.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically to a pogo probe with replaceable pins. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this invention and does not constitute prior art.

[0003] Currently used pogo pin connectors are prone to probe tip wear and oxidation after prolonged use. Once the probe tip is damaged or corroded, the corresponding signal channel will fail, causing the entire device to malfunction and requiring replacement. However, most existing pogo pin connectors use non-removable probe tips, while the few with replaceable tips have significant drawbacks: some products have excessively large probes due to structural limitations, making them unsuitable for space-constrained applications; others use a riveting process for the head, which actually accelerates tip wear and shortens lifespan. Therefore, there is a need to invent a pogo probe that solves the problem of replaceable tips in confined spaces while ensuring sufficient product lifespan.

[0004] It should be noted that the above description of the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of the present invention and facilitating understanding by those skilled in the art. It should not be assumed that the above technical solutions are known to those skilled in the art simply because they have been described in the background section of this invention. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a pogo probe with replaceable needles.

[0006] To address the aforementioned technical problems, this invention provides a replaceable needle pogo probe, comprising a syringe, a needle inserted from the front end of the syringe, and a spring installed inside the syringe. The front end of the spring abuts against the tail end of the needle. The inner wall of the syringe has a limiting protrusion, and the side wall of the syringe has a axially formed slot, forming a cantilever beam. The limiting protrusion is located axially between the front and rear ends of the slot. The tail end of the needle is provided with a limiting step whose width is greater than the inner diameter of the limiting protrusion. During needle insertion and removal, when the limiting step passes the limiting protrusion, the cantilever beam can spring outward under the pressure of the limiting step. When the limiting step passes the limiting protrusion, the cantilever beam springs back to its original position. When the needle is inserted into the syringe, the limiting protrusion is engaged with the front side of the limiting step.

[0007] Preferably, the side wall of the syringe is provided with two slots, which extend axially and connect at the front end. The syringe wall between the two slots forms the cantilever beam. The rear end of the cantilever beam is connected to the syringe body, and the front end forms a free end. At least a portion of the limiting protrusion is located on the inner surface of the cantilever beam. When the limiting step of the needle passes through the limiting protrusion, the free end of the cantilever beam undergoes radial outward elastic deformation. After the limiting step passes through the limiting protrusion, the cantilever beam can return to its initial position.

[0008] Preferably, the limiting protrusion includes a plurality of riveting protrusions evenly distributed along the circumference of the inner wall of the syringe, wherein one of the riveting protrusions is located on the inner surface of the cantilever beam.

[0009] Preferably, the limiting protrusion is a raised ring formed on the inner surface of the syringe sidewall by a riveting process, and the raised ring is arranged along the circumference of the syringe.

[0010] Preferably, the sidewall of the needle is provided with an axially recessed section forming a reduced diameter section, and the rear end of the reduced diameter section forms a radially expanding limiting step. The reduced diameter section and the inner wall of the syringe form an annular gap. When the needle moves backward against the elastic force of the spring, the limiting protrusion can move within the annular gap.

[0011] Preferably, the front end face of the limiting step is a tapered inclined surface that gradually slopes backward from the inside out, and the rear end face of the limiting step has a transition rounded corner at its edge.

[0012] Preferably, a top block is installed at the front end of the spring, and when the needle is assembled into the syringe, the rear end face of the needle contacts the front end face of the top block.

[0013] Preferably, the tail end of the syringe is fixedly inserted into the support, and the tail end of the spring is located at the front end of the support.

[0014] By employing the above technical solutions, the beneficial effects of the present invention are as follows:

[0015] The pogo probe with replaceable needles of the present invention has a slotted groove at the rivet point or riveting position, forming a cantilever beam structure at the slotted groove to hold the tail of the main needle. When inserting or removing the needle, the cantilever beam can spring outward, thereby realizing the needle insertion and removal replacement function. In the pogo probe of this application, the cantilever beam is part of the syringe wall, which does not increase the volume of the probe and does not require additional parts. The limiting protrusion is formed on the inner wall of the syringe by a press riveting process, with a smooth surface, which will not cause wear on the needle and increases the service life of the probe. Attached Figure Description

[0016] Figure 1This is a cross-sectional structural diagram of the replaceable needle pogo probe of this application.

[0017] Figure 2 yes Figure 1 A magnified view of part A in the middle.

[0018] Figure 3 This is a schematic diagram of the replaceable needle pogo probe of this application.

[0019] Figure 4 yes Figure 3 A magnified view of part B in the middle section.

[0020] Among them: 1. Needle; 2. Syringe; 3. Groove; 4. Cantilever beam; 5. Riveted joint; 6. Limiting protrusion; 6', Protruding ring; 7. Spring; 8. Top block; 9. Support; 10. Limiting step; 11. Conical inclined surface; 12. Rounded corner; 13. Reduced diameter section. Detailed Implementation

[0021] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that in the description of this invention, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] like Figure 1-4As shown, the present invention provides a pogo probe with replaceable needle 1, including a syringe 2, a needle 1 inserted from the front end of the syringe 2, and a spring 7 installed inside the syringe 2. The front end of the spring 7 abuts against the tail end of the needle 1. The inner wall of the syringe 2 has a limiting protrusion 6. The side wall of the syringe 2 has a slot 3 opened along the axial direction, and a cantilever beam 4 is formed at the slot 3. The limiting protrusion 6 is located between the front and rear ends of the slot 3 in the axial direction. The tail end of the needle 1 is provided with a limiting step 10 with a diameter larger than the inner diameter of the limiting protrusion. During the insertion and removal of the needle 1, the limiting step 10 passes through the limiting protrusion, and the cantilever beam 4 can spring outward. When the limiting step 10 passes the limiting protrusion 6, the cantilever beam 4 springs back to its original position. When the needle 1 is inserted into the syringe 2, the limiting protrusion is locked in front of the limiting step 10, thereby realizing the insertion and removal replacement function of the needle 1. In this application, the cantilever beam 4 is part of the wall of the syringe 2 and does not increase the volume of the probe.

[0024] like Figure 4 As shown, the side wall of the syringe 2 is provided with two grooves 3. The two grooves 3 extend axially and are connected at the front end. In a preferred embodiment, the grooves 3 are U-shaped groove structures. The syringe wall between the two grooves 3 forms the cantilever beam 4. The rear end of the cantilever beam 4 is connected to the syringe body, and the front end forms a free end. At least a portion of the limiting protrusion is located on the inner surface of the cantilever beam 4. When the limiting step 10 of the needle 1 passes through the limiting protrusion, the free end of the cantilever beam 4 undergoes radial outward elastic deformation. After the limiting step 10 passes through the limiting protrusion, the cantilever beam 4 can return to its initial position.

[0025] In one embodiment, the limiting protrusion includes a plurality of riveting protrusions evenly distributed circumferentially along the inner wall of the syringe 2, one of which is located on the inner surface of the cantilever beam 4. In another embodiment, the limiting protrusion is a raised ring 6' formed on the inner surface of the side wall of the syringe 2 by a roll riveting process, the raised ring 6' being arranged circumferentially along the syringe 2. The formation of the limiting protrusions or the raised ring 6' on the inner wall of the syringe 2 provides a smooth surface, preventing wear on the needle tip 1 and increasing the probe's service life.

[0026] The sidewall of the needle 1 has an axially recessed, tapered section 13. The rear end of the tapered section 13 forms a radially expanding limiting step 10. An annular gap is formed between the tapered section 13 and the inner wall of the syringe 2. When the needle 1 moves backward against the elastic force of the spring 7, the limiting protrusion can move within the annular gap. The front end face of the limiting step 10 is a tapered inclined surface 11 that gradually slopes backward from the inside out. The edge of the rear end face of the limiting step 10 has a transition fillet 12. The tapered inclined surface 11 and the fillet 12 serve as guides, gradually opening the cantilever beam 4 as it passes the limiting protrusion, preventing it from jamming.

[0027] A top block 8 is installed at the front end of the spring 7. When the needle 1 is assembled into the syringe 2, the rear end face of the needle 1 contacts the front end face of the top block 8. A support 9 is fixedly inserted into the tail end of the syringe 2, and the tail end of the spring 7 is located at the front end of the support 9.

[0028] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A pogo probe with a replaceable needle (1), comprising: a syringe (2); a needle (1) inserted from the front end of the syringe (2); and a spring (7) installed inside the syringe (2), wherein the front end of the spring (7) abuts against the tail end of the needle (1), characterized in that: The inner wall of the syringe (2) has a limiting protrusion (6), and the side wall of the syringe (2) is provided with a axial groove (3), and a cantilever beam (4) is formed at the groove (3). The limiting protrusion (6) is located axially between the front and rear ends of the groove (3). The tail of the needle (1) is provided with a limiting step (10) with a width greater than the inner diameter of the limiting protrusion. During the insertion and removal of the needle (1), when the limiting step (10) passes the limiting protrusion (6), the cantilever beam (4) can spring outward under the compression of the limiting step (10). When the limiting step (10) passes the limiting protrusion (6), the cantilever beam (4) springs back to its original position. When the needle (1) is inserted into the syringe (2), the limiting protrusion is engaged with the front side of the limiting step (10).

2. The pogo probe according to claim 1, characterized in that, The side wall of the syringe (2) is provided with two grooves (3). The two grooves (3) extend axially and are connected at the front end. The syringe (2) wall between the two grooves (3) forms the cantilever beam (4). The rear end of the cantilever beam (4) is connected to the syringe (2) body, and the front end forms a free end. At least a portion of the limiting protrusion is located on the inner surface of the cantilever beam (4). When the limiting step (10) of the needle (1) passes through the limiting protrusion, the free end of the cantilever beam (4) undergoes radial outward elastic deformation. After the limiting step (10) passes through the limiting protrusion, the cantilever beam (4) can return to its initial position.

3. The pogo probe according to claim 1 or 2, characterized in that, The limiting protrusion includes a plurality of rivet protrusions evenly distributed along the inner wall of the syringe (2), one of which is located on the inner surface of the cantilever beam (4).

4. The pogo probe according to claim 1 or 2, characterized in that, The limiting protrusion is a raised ring (6') formed on the inner surface of the side wall of the syringe (2) by a riveting process, and the raised ring (6') is arranged along the circumference of the syringe (2).

5. The pogo probe according to claim 1 or 2, characterized in that, The side wall of the needle (1) is provided with a reduced diameter section (13) formed by an axial recess. The rear end of the reduced diameter section (13) forms a radially expanding limiting step (10). The reduced diameter section (13) and the inner wall of the syringe (2) form an annular gap. When the needle (1) moves backward against the elastic force of the spring (7), the limiting protrusion can move within the annular gap.

6. The pogo probe according to claim 1 or 2, characterized in that, The front end face of the limiting step (10) is a tapered inclined surface (11) that gradually slopes backward from the inside out, and the edge of the rear end face of the limiting step (10) is provided with a transition rounded corner (12).

7. The pogo probe according to claim 1 or 2, characterized in that, A top block (8) is installed at the front end of the spring (7). When the needle (1) is assembled into the syringe (2), the rear end face of the needle (1) contacts the front end face of the top block (8).

8. The pogo probe according to claim 1 or 2, characterized in that, The tail end of the syringe (2) is fixedly inserted into a support (9), and the tail end of the spring (7) is located at the front end of the support (9).

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