A flexible coaxial pogo module

Abstract

This invention provides a flexible coaxial pogo module, comprising: a guide ground plate with multiple through mounting holes, the axial direction of which is parallel to the compression direction of the pogo module; an inner conductor, which is a spring pin structure and is installed within the mounting holes; and an outer conductor, which is an axially elastic tubular structure and is installed within the mounting holes, coaxially sleeved on the outside of the inner conductor, with a portion of the outer conductor extending from the front end of the mounting holes, and the front end of the inner conductor extending from the front end of the outer conductor. When the pogo module is compressed axially, the inner and outer conductors are compressed synchronously. In this flexible coaxial pogo module, the outer and inner conductors can be compressed synchronously, and during compression, the outer conductor maintains a state of surrounding the inner conductor. The outer conductor acts as a shielding layer, effectively confining the electromagnetic field between the inner and outer conductors, suppressing electromagnetic leakage, and improving anti-interference capability.

Description

Technical Field

[0001] This invention relates to the field of electrical connectors, and more particularly to a flexible coaxial pogo module. 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] In traditional Pogo connectors, some designs include an outer conductor, but this outer conductor is a rigid structure, fixed inside the housing and cannot move. The inner conductor (spring pin) extends a considerable distance from the outer conductor; when compressed, the inner conductor retracts independently, and the outer conductor cannot move synchronously.

[0004] This structure leads to two problems: First, during compression, the inner and outer conductors undergo relative displacement, causing characteristic impedance drift, signal reflection, and increased transmission loss. Second, the outer conductor is inelastic, and its enclosure of the inner conductor changes during compression, disrupting shielding continuity and increasing electromagnetic leakage.

[0005] Therefore, there is an urgent need for a flexible coaxial pogo module that can maintain constant impedance and continuous shielding during compression.

[0006] 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

[0007] The technical problem to be solved by the present invention is to provide a flexible coaxial pogo module.

[0008] To address the aforementioned technical problems, this invention provides a flexible coaxial pogo module, comprising: a guide ground plane with at least one through mounting hole; an inner conductor, which is an elastic pin structure and is installed within the mounting hole; and an outer conductor, which is an axially elastic tubular structure installed within the mounting hole and coaxially sleeved outside the inner conductor, with a portion of the outer conductor extending from the front end of the mounting hole. The front end of the inner conductor is flush with or extends from the front end of the outer conductor. When the pogo module is compressed axially, the inner conductor and the outer conductor are compressed synchronously.

[0009] Preferably, the axial direction of the mounting hole of the guide plate is parallel to the compression direction of the pogo module. The inner conductor includes a needle tube, a spring installed inside the needle tube, and a front needle shaft and a rear needle shaft respectively installed at both ends of the spring. The front needle shaft extends from the front end of the needle tube, and the rear needle shaft extends from the rear end of the needle tube. The front needle shaft and the rear needle shaft can extend and retract axially to compress the spring.

[0010] Preferably, the outer conductor includes a front end and a rear end, with a spring region between the front end and the rear end, and at least a portion of the front end of the outer conductor extends from the front end of the mounting hole.

[0011] Preferably, the outer wall of the spring region of the outer conductor protrudes outward to form a protrusion, which makes electrical contact with the inner wall of the mounting hole to conduct the current on the outer conductor through the guide ground plane.

[0012] Preferably, the outer conductor has a slit along the axial direction, the slit being used to release the stress generated inside the outer conductor when it is axially compressed.

[0013] Preferably, the outer conductor is formed by stamping and rolling a metal sheet into a circle. The metal sheet is stamped to form the structure of the spring area, and the gap is formed at the joint of the opposite edges of the rolled metal sheet.

[0014] Preferably, the rear end of the outer conductor is further provided with a protrusion, and the inner wall of the mounting hole is provided with a limiting hole that cooperates with the protrusion. The protrusion is inserted into the limiting hole to fix the outer conductor in the mounting hole.

[0015] Preferably, the metal sheet is stamped in the spring area to form a plurality of strip-shaped hollow grooves extending along its width direction. The hollow grooves are arranged sequentially along the length direction of the metal sheet, and the opening directions of two adjacent hollow grooves are alternately arranged. The opening of one hollow groove is located at the first side edge of the metal sheet, and the opening of the other hollow groove is located at the second side edge of the metal sheet. When the metal sheet is rolled into a circle to form the outer conductor, the hollow grooves are bent along the metal sheet to form arc-shaped grooves along the circumference of the outer conductor. The first side edge and the second side edge of the metal sheet are connected to each other, and the gap is formed at the connection.

[0016] Preferably, a dielectric body is provided on the inner wall of the front end of the outer conductor, the dielectric body being used to insulate the inner conductor from the outer conductor.

[0017] By employing the above technical solutions, the beneficial effects of the present invention are as follows: The flexible coaxial pogo module of this invention allows the outer and inner conductors to be compressed synchronously. During compression, the outer conductor maintains its enclosure over the inner conductor. The outer conductor acts as a shielding layer, effectively confining the electromagnetic field between the inner and outer conductors, suppressing electromagnetic leakage, and improving anti-interference capabilities, making it more suitable for high-density, high-speed signal transmission scenarios. Because the outer and inner conductors are compressed synchronously, the characteristic impedance remains stable, avoiding impedance abrupt changes and reducing signal reflection, thereby enabling lower transmission energy consumption at high frequencies.

[0018] In addition, the outer wall of the spring region of the outer conductor is provided with a protrusion (rivet), which makes electrical contact with the inner wall of the mounting hole of the guide ground plate. Through this contact structure, the induced current on the spring region of the outer conductor is directly guided to the guide ground plate, which disrupts the conditions for the formation of electromagnetic resonance and thus eliminates the resonance peak on the attenuation curve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the flexible coaxial pogo module of this application.

[0020] Figure 2 This is a cross-sectional structural diagram of the flexible coaxial pogo module of this application.

[0021] Figure 3 This is a schematic diagram of the structure of the outer conductor of this application.

[0022] Figure 4 This is a schematic diagram of the structure of the outer conductor of this application.

[0023] Figure 5 This is a schematic diagram of the elastic needle of this application.

[0024] Wherein: 1. Inner conductor; 2. Dielectric body; 3. Outer conductor; 4. Guide ground plane; 31. Front end of outer conductor; 32. Rear end of outer conductor; 33. Spring area; 34. Protrusion; 35. Gap; 36. Raise; 11. Front needle shaft; 12. Needle tube; 13. Spring; 14. Rear needle shaft. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] like Figure 1 and 2 As shown, this invention provides a flexible coaxial pogo module, comprising a guide ground plate 4, an inner conductor 1, an outer conductor 3, and a dielectric body 2. The guide ground plate 4 has multiple through mounting holes, the axial direction of which is parallel to the compression direction of the pogo module. The guide ground plate 4 is made of a metal material (such as copper alloy) and serves both mechanical guiding and electrical grounding functions. The inner conductor 1 is a spring-pin structure, installed within the mounting holes, with its front end extending from or flush with the front end of the outer conductor 3, for forming electrical contact with external devices. The outer conductor 3 is an axially elastic tubular structure, installed within the mounting holes, coaxially sleeved on the outside of the inner conductor 1, with a portion of the outer conductor 3 extending from the front end of the mounting holes. The dielectric body 2 is made of an insulating material and is disposed on the inner wall of the front end 31 of the outer conductor 3. The dielectric body 2 is located between the inner conductor 1 and the outer conductor 3, electrically isolating them and preventing signal short circuits.

[0028] like Figure 5 As shown, the inner conductor 1 includes a needle tube 12, a spring 13 installed inside the needle tube 12, and a front needle shaft 11 and a rear needle shaft 14 respectively installed at both ends of the spring 13. The front needle shaft 11 extends from the front end of the needle tube 12, and the rear needle shaft 14 extends from the rear end of the needle tube 12. The front needle shaft 11 and the rear needle shaft 14 can extend and retract axially to compress the spring 13.

[0029] When the pogo module is compressed axially, the inner conductor 1 and the outer conductor 3 are compressed synchronously. In this invention's elastic coaxial pogo module, the outer conductor 3 and the inner conductor 1 are compressed synchronously, and during compression, the outer conductor 3 maintains its enclosure over the inner conductor 1. The outer conductor 3 acts as a shielding layer, effectively confining the electromagnetic field between the inner and outer conductors, suppressing electromagnetic leakage, improving anti-interference capabilities, and making it more suitable for high-density, high-speed signal transmission scenarios. Because the outer conductor 3 and the inner conductor 1 are compressed synchronously, the characteristic impedance remains stable, avoiding impedance abrupt changes and reducing signal reflection, thereby enabling lower transmission energy consumption at high frequencies.

[0030] like Figure 3 and 4As shown, a spring region 33 is located between the front end 31 and the rear end 32 of the outer conductor 3. At least a portion of the front end 31 of the outer conductor 3 extends from the front end of the mounting hole. The outer wall of the spring region 33 of the outer conductor 3 protrudes outward to form a protrusion 34, which makes electrical contact with the inner wall of the mounting hole. Through this contact structure, the induced current on the spring region 33 of the outer conductor 3 is directly guided to the guide ground plane 4, disrupting the conditions for forming electromagnetic resonance and thus eliminating the resonance peak on the attenuation curve. The outer conductor 3 has a gap 35 along the axial direction, which is used to release the stress generated inside the outer conductor 3 when it is axially compressed. In a preferred embodiment, the outer conductor 3 is formed by stamping and rolling a metal sheet. The metal sheet is stamped to form the structure of the spring region 33, and the gap 35 is formed at the mating of the opposite edges of the rolled metal sheet. The rear end 32 of the outer conductor 3 is also provided with a protrusion 36. The inner wall of the mounting hole is provided with a limiting hole that mates with the protrusion 36. The protrusion 36 is inserted into the limiting hole to fix the outer conductor 3 in the mounting hole. More preferably, the metal sheet is stamped in the spring area 33 to form a plurality of strip-shaped hollow grooves extending along its width direction. The hollow grooves are arranged sequentially along the length direction of the metal sheet, and the opening directions of two adjacent hollow grooves are alternately arranged. The opening of one hollow groove is located at the first side edge of the metal sheet, and the opening of the other hollow groove is located at the second side edge of the metal sheet. When the metal sheet is rolled into the outer conductor 3, the hollow grooves are bent along the metal sheet to form arc-shaped grooves along the circumference of the outer conductor 3. The first side edge and the second side edge of the metal sheet are connected to each other, and the gap 35 is formed at the connection.

[0031] 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 resilient coaxial pogo module, characterized by, include, The guide plate (4) has at least one through mounting hole. Inner conductor (1), wherein the inner conductor (1) is an elastic needle structure and is installed in the mounting hole; The outer conductor (3) is a tubular structure with axial elasticity, installed in the mounting hole, coaxially sleeved on the outside of the inner conductor (1), and part of the outer conductor (3) extends out from the front end of the mounting hole. The front end of the inner conductor (1) is flush with the front end of the outer conductor, or extends from the front end of the outer conductor (3). When the pogo module is compressed along the axial direction, the inner conductor (1) and the outer conductor (3) are compressed synchronously.

2. The elastic coaxial pogo module according to claim 1, characterized in that, The axial direction of the mounting hole of the guide plate (4) is parallel to the compression direction of the pogo module. The inner conductor (1) includes a needle tube (12), a spring (13) installed inside the needle tube (12), and a front needle shaft (11) and a rear needle shaft (14) respectively installed at both ends of the spring (13). The front needle shaft (11) extends from the front end of the needle tube (12), and the rear needle shaft (14) extends from the rear end of the needle tube (12). The front needle shaft (11) and the rear needle shaft (14) can extend and retract axially to compress the spring (13).

3. The elastic coaxial pogo module of claim 1, wherein, The outer conductor (3) includes a front end (31) and a rear end (32), with a spring region (33) between the front end (31) and the rear end (32), and at least a portion of the front end (31) of the outer conductor (3) extends from the front end of the mounting hole.

4. The elastic coaxial pogo module according to claim 3, characterized in that The outer wall of the spring area (33) of the outer conductor (3) protrudes outward to form a protrusion (34), which makes electrical contact with the inner wall of the mounting hole to conduct the current on the outer conductor (3) through the guide ground plate (4).

5. The elastic coaxial pogo module according to claim 4, characterized in that The outer conductor (3) has a slit (35) along the axial direction, the slit (35) being used to release the stress generated inside the outer conductor (3) when it is axially compressed.

6. The elastic coaxial pogo module according to claim 5, characterized in that The outer conductor (3) is formed by stamping and rolling a metal sheet into a circle. The metal sheet is stamped to form the structure of the spring area (33). After the metal sheet is rolled into a circle, the gap (35) is formed at the joint of the opposite edges.

7. The elastic coaxial pogo module according to claim 6, characterized in that The rear end (32) of the outer conductor (3) is also provided with a protrusion (36), and the inner wall of the mounting hole is provided with a limiting hole that cooperates with the protrusion (36). The protrusion (36) is inserted into the limiting hole to fix the outer conductor (3) in the mounting hole.

8. The elastic coaxial pogo module according to claim 7, characterized in that The metal sheet is stamped in the spring area (33) to form multiple strip-shaped hollow grooves extending along its width direction, and the hollow grooves are arranged sequentially along the length direction of the metal sheet. The opening directions of two adjacent perforated slots are alternated, with one perforated slot opening at the first edge of the metal sheet and the other perforated slot opening at the second edge of the metal sheet. After the metal sheet is rolled into the outer conductor (3), the hollow groove is bent along the outer conductor (3) to form an arc-shaped groove along the circumference of the outer conductor (3). The first side edge of the metal sheet is connected to the second side edge, and the gap (35) is formed at the joint.

9. The elastic coaxial pogo module of claim 1, wherein, The inner wall of the front end (31) of the outer conductor (3) is provided with a dielectric body (2), which is used to insulate the inner conductor (1) from the outer conductor (3).

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