Cylindrical elastic component and coaxial connector

Abstract

The present invention discloses a cylindrical elastic member and a coaxial connector. The cylindrical elastic member has a plurality of hollow holes extending inwardly through the inner cavity along its outer surface, and a multi-layer elastic structure is formed between the hollow holes. The cylindrical elastic member can be deformed and extended in the axial direction by the multi-layer elastic structure. The coaxial connector comprises: a cylindrical elastic member having a plurality of hollow holes extending inwardly through the inner cavity along its outer surface, and a multi-layer elastic structure is formed between the hollow holes. The cylindrical elastic member can be deformed and extended in the axial direction by the multi-layer elastic structure; an insulator fixedly mounted in the cylindrical elastic member; a central elastic ejector pin assembly disposed at the center of the insulator and coaxially arranged with the cylindrical elastic member, with both upper and lower ends of the central elastic ejector pin assembly extending outside the upper and lower end surfaces of the insulator; the upper end of the cylindrical elastic member and the upper end of the central elastic ejector pin assembly both form multi-directional elastic contact with a PCB board with tolerance.

Description

Technical field:

[0001] The present invention relates to the technical field of connectors, in particular to a cylindrical elastic component and a coaxial connector. Background technology:

[0002] Connectors primarily serve a variety of industries, including transportation, communications, networking, IT, healthcare, and home appliances. Rapid technological advancements in these areas, along with rapid market growth, are driving the development of connector technology. To date, connectors have evolved into a series of specialized products, boasting a comprehensive range of product types, diverse specifications, diverse structural types, specialized product lines, distinct industry characteristics, and a standardized system of standards.

[0003] The electrical contact springs used in connectors are mostly formed by bending metal sheets. The bent part is formed into a certain arc, and the spring relies on the elastic recovery of the bent part to maintain a certain reaction force (elasticity). The elasticity of this spring relies on the elastic recovery of a bent part to achieve, but the elasticity value is relatively small. It is easy to fatigue damage under overvoltage and long-life operation, and even the risk of breakage, causing great trouble to users.

[0004] In view of this, the inventors propose the following technical solutions. Summary of the invention:

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a cylindrical elastic component and a coaxial connector.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: the cylindrical elastic component is provided with a plurality of hollow holes penetrating the inner cavity along its outer surface, and a multi-layer elastic structure is formed between the hollow holes. The cylindrical elastic component can be stretched and deformed in the axial direction through the multi-layer elastic structure.

[0007] Furthermore, in the above technical solution, the multi-layer elastic structure is in a continuous S-shape, or a continuous fish-scale shape, or a continuous diamond shape, or a continuous wave shape, or a continuous crescent shape, or a continuous ellipse shape.

[0008] Furthermore, in the above technical solution, the lower end surface of the cylindrical elastic component is formed with a socket-type solder foot or an SMT solder foot; the cylindrical elastic component is formed by rolling a metal sheet, and the two ends of the metal sheet are butt-jointed and the seams are laser welded to fix them into a cylindrical shape, or, the two ends of the metal sheet are formed with a dovetail clip and a dovetail slot, and the dovetail clip and the dovetail slot are buckled together and pressed into a cylindrical shape.

[0009] Furthermore, in the above technical solution, the upper end of the cylindrical elastic member is folded outward to form an outer shielding ring, which covers the hollow hole; or, an outer shielding cover is provided on the outer periphery of the cylindrical elastic member, which covers the hollow hole; or, the upper end of the cylindrical elastic member is folded inward to form an inner shielding ring.

[0010] A coaxial connector comprises: a cylindrical elastic member having a plurality of hollow holes extending inwardly through an inner cavity along its outer surface, and a multi-layer elastic structure formed between the hollow holes, wherein the cylindrical elastic member can be deformed and extended in an axial direction by the multi-layer elastic structure; an insulator fixedly mounted in the cylindrical elastic member; a central elastic ejector pin assembly disposed at the center of the insulator and coaxially arranged with the cylindrical elastic member, with upper and lower ends of the central elastic ejector pin assembly extending beyond the upper and lower end surfaces of the insulator; the upper ends of the cylindrical elastic member and the central elastic ejector pin assembly both forming multi-directional tolerance elastic contact with a PCB board.

[0011] Furthermore, in the above technical solution, the upper end of the cylindrical elastic component is folded outward to form an outer shielding ring, which covers the hollow hole, so that an axially deformable shielding space is formed inside the cylindrical elastic component, thereby achieving all-round shielding of the inner radial direction; or, an outer shielding cover is provided on the outer periphery of the cylindrical elastic component, which covers the hollow hole, so that an axially deformable shielding space is formed inside the cylindrical elastic component.

[0012] Furthermore, in the above technical solution, a convex ring portion is formed on the outer periphery of the lower end of the insulator; a plurality of first flanging claws are formed in the middle of the cylindrical elastic component, and a plurality of second flanging claws that can be used as SMT solder feet are formed at the lower end of the cylindrical elastic component. The first flanging claws are pressed onto the upper end of the convex ring portion, and the second flanging claws are pressed onto the lower end of the convex ring portion, and the convex ring portion is positioned in contact with the inner wall of the cylindrical elastic component.

[0013] Furthermore, in the above technical solution, the upper end of the cylindrical elastic component is folded inward to form an inner shielding ring, and the outer periphery of the insulator is also fixedly covered with an inner shielding shell. The upper end of the inner shielding shell and the lower end of the inner shielding ring are staggered to form an axially deformable shielding space inside the cylindrical elastic component, and a plurality of elastic claws are also formed on the upper end of the inner shielding shell, which are in elastic contact with the inner shielding ring.

[0014] Furthermore, in the above technical solution, a convex ring portion is formed on the periphery of the lower end of the insulator, and a convex ring sleeve is provided at the lower end of the inner shielding shell, which is arranged on the periphery of the convex ring portion; a plurality of first flanging claws are formed in the middle part of the cylindrical elastic component, and the first flanging claws are pressed onto the upper end of the convex ring sleeve.

[0015] Furthermore, in the above technical solution, the coaxial connector is installed on a flange joint, a threaded section is provided at the lower end of the flange joint, and the flange joint is spirally installed in the equipment through the threaded section, wherein a mounting ring is provided at the upper end of the flange joint, and the mounting ring is fixed between the lower end of the insulator and the lower end of the cylindrical elastic member.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0017] 1. The cylindrical elastic component of the present invention has a simple structure. Compared with conventional spring pieces, the cylindrical elastic component of the present invention has good elasticity and strength, a large elastic force value, and will not suffer fatigue damage or even breakage even under overpressure and long-life working conditions. It has an extremely long service life and can ensure the stability and quality of docking, making the present invention highly competitive in the market.

[0018] 2. The cylindrical elastic member used in the coaxial connector of the present invention has a simple structure. Compared with conventional springs, the cylindrical elastic member has excellent elasticity and strength, with a large elastic force value. Even under overvoltage and long-life working conditions, it will not suffer fatigue damage or even breakage, thus having an extremely long service life and ensuring the stability and quality of docking. Because the upper end of the cylindrical elastic member and the upper end of the central elastic ejector assembly are both elastically retractable, the stability of docking with the PCB board is guaranteed. The cylindrical elastic member 1 can be energized to achieve grounding, and the central elastic ejector assembly can be energized to achieve signal transmission, ensuring communication quality. In addition, the coaxial connector of the present invention also has a multi-directional tolerance function. That is, when there is an installation error in the distance between the two PCB boards, the cylindrical elastic member and the central elastic ejector assembly in the coaxial connector of the present invention can automatically axially contract to ensure that the cylindrical elastic member and the central elastic ejector assembly are always pressed against the gold finger of the PCB board and form stable contact. At the same time, the cylindrical elastic member can achieve all-round shielding of the central elastic ejector, ensuring good communication quality, making the present invention highly competitive in the market. Description of the drawings:

[0019] Figure 1 is a perspective view of a first structure of a cylindrical elastic member of the present invention;

[0020] Figure 2 is a perspective view of a second structure of the cylindrical elastic member of the present invention;

[0021] Figure 3 yes Figure 2 The expanded diagram of

[0022] Figure 4 is a perspective view of a third structure of the cylindrical elastic member of the present invention;

[0023] Figure 5 yes Figure 4 's expanded diagram;

[0024] Figure 6 is a perspective view of a fourth structure of the cylindrical elastic member of the present invention;

[0025] Figure 7 is a perspective view of a first structure of the coaxial connector of the present invention;

[0026] Figure 8 is a cross-sectional view of a first structure of the coaxial connector of the present invention;

[0027] Figure 9 is a cross-sectional view of a second structure of the coaxial connector of the present invention;

[0028] Figure 10 is a perspective view of a third structure of the coaxial connector of the present invention;

[0029] Figure 11 is a cross-sectional view of a third structure of the coaxial connector of the present invention;

[0030] Figure 12 is a three-dimensional diagram of the inner shielding shell in the third structure of the coaxial connector of the present invention;

[0031] Figure 13 is a perspective view of a fourth structure of the coaxial connector of the present invention;

[0032] Figure 14 This is an assembly diagram of the second structure of the coaxial connector of the present invention and two PCB boards (ideal working state);

[0033] Figure 15 This is an assembly diagram of the second structure of the coaxial connector of the present invention and two PCB boards (upper limit of axial tolerance);

[0034] Figure 16 This is an assembly diagram of the second structure of the coaxial connector of the present invention and two PCB boards (lower limit of axial tolerance);

[0035] Figure 17 This is a first schematic diagram of the installation of the coaxial connector and the device of the present invention;

[0036] Figure 18 This is a second schematic diagram of the installation of the coaxial connector and the device of the present invention;

[0037] Figure 19 It is a three-dimensional diagram of the fifth structure of the coaxial connector of the present invention.

[0038] Figure 20 is a perspective view of a fifth structure of the cylindrical elastic member of the present invention;

[0039] Figure 21 is a perspective view of a sixth structure of the cylindrical elastic member of the present invention;

[0040] Figure 22 is a perspective view of a seventh structure of the cylindrical elastic member of the present invention;

[0041] Figure 23 is a perspective view of an eighth structure of the cylindrical elastic member of the present invention;

[0042] Figure 24 It is a three-dimensional diagram of the ninth structure of the cylindrical elastic component of the present invention. Specific implementation method:

[0043] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0044] See Figure 1-6 The figure shows a cylindrical elastic member 1. The cylindrical elastic member 1 has a plurality of hollow holes 11 extending inwardly through the inner cavity along its outer surface. A multi-layer elastic structure 12 is formed between the hollow holes 11. The cylindrical elastic member 1 is capable of axial expansion and contraction deformation through the multi-layer elastic structure 12, thereby exerting an elastic force. The cylindrical elastic member of the present invention has a simple structure and, compared to conventional springs, exhibits superior elasticity and strength, with a high elastic force. Even under overpressure and long-life operating conditions, it will not suffer fatigue damage or even fracture, resulting in an extremely long service life. Furthermore, the stability and quality of the docking connection are guaranteed, making the present invention highly competitive in the market.

[0045] The lower end surface of the cylindrical elastic member 1 is formed with a socket-type solder foot 13 or an SMT solder foot, and is soldered and fixed to the first PCB board through the socket-type solder foot 13 or the SMT solder foot, and is electrically conductive; the upper end surface of the cylindrical elastic member 1 is set to be flat or chamfered, and it elastically contacts with the other PCB board and is electrically conductive, thereby realizing power supply between the two PCB boards.

[0046] The cylindrical elastic member 1 is formed by rolling a metal sheet. Specifically, the metal sheet is first cut into a suitable size, and a plurality of through-holes 11 are punched out on the metal sheet to form a multi-layer elastic structure 12. The metal sheet is then formed by rolling, and the two ends of the metal sheet are fixed together. The fixing method can be as follows: the two ends of the metal sheet are butt-jointed and the seams are laser welded to fix them into a cylindrical shape, or a dovetail buckle 101 and a dovetail slot 102 are formed at both ends of the metal sheet, and the dovetail buckle 101 and the dovetail slot 102 are buckled and pressed into a cylindrical shape.

[0047] The multi-layer elastic structure 12 is in a continuous S-shape, or a continuous fish-scale shape, or a continuous diamond shape, or a continuous wave shape, or a continuous crescent shape, or a continuous ellipse shape.

[0048] Combine Figure 1-5 As shown, the two ends of the S-shaped multi-layer elastic structure 12 are connected to the upper and lower cylinders, and the upper cylinder, the S-shaped multi-layer elastic structure 12, and the lower cylinder constitute a cylindrical elastic component 1 with a three-section structure; wherein, the S-shaped multi-layer elastic structure 12 includes a plurality of continuously wound S-shaped elastomers, and the S-shaped elastomers have the characteristics of equal width and thickness, ensuring the uniformity of the elastic force of the entire section; the rotating part of the S-shaped elastomer adopts an arc transition, and the straight segment after rotation leaves a uniform gap with the previous straight segment, so that a uniform gap is left between the two adjacent S-shaped elastomers, and multiple S-shaped elastomers overlap end to end to form a multi-layer S-shaped elastomer, and multiple multi-layer S-shaped elastomers distributed along the circumference constitute the S-shaped multi-layer elastic structure 12, and the multi-layer S-shaped elastomer is connected in the middle of the upper and lower cylinders. Multiple multi-layer S-shaped elastomers are distributed along the circumference and cooperate with the upper and lower cylinders to form the cylindrical elastic component 1.

[0049] Combine Figure 6 As shown, the fish-scale multilayer elastic structure 12 comprises a plurality of superimposed and connected fish-scale elastic members. The fish-scale shape resembles a triangle with an arc, or even a fan. The triangular frame is constructed using ribs of substantially equal width. Each triangle is stacked on the arc edge of another triangle, forming a group of elastic members capable of compression and rebound. Multiple arc-shaped triangles are evenly distributed around the circumference, forming a fish-scale array structure, forming the fish-scale multilayer elastic structure 12.

[0050] The diamond-shaped multilayer elastic structure 12, the wavy multilayer elastic structure 12, the crescent-shaped multilayer elastic structure 12, and the elliptical multilayer elastic structure 12 are similar to the fish-scale multilayer elastic structure 12, and can be seen in order. Figure 20-23 Of course, the hollow hole 11 can also be in other shapes, as long as it can make the multi-layer elastic structure 12 be able to achieve axial compression deformation and reset, and similar structures are within the scope of protection of this patent.

[0051] The cylindrical elastic member 1 has a double-layer structure with a flanged edge. Specifically, the upper end of the cylindrical elastic member 1 is folded outward to form an outer shielding ring 15, forming an outer flanged double-layer structure. The outer shielding ring 15 covers the hollow hole 11, forming a radially closed shielding space inside the cylindrical elastic member 1, thereby achieving inward radial all-round shielding. Alternatively, the upper end of the cylindrical elastic member 1 is folded inward to form an inner shielding ring 16, forming an inner flanged double-layer structure. Alternatively, the cylindrical elastic member 1 may be provided with an outer shielding cover 17, which is a separate metal part, surrounding the outer periphery of the cylindrical elastic member 1. The outer shielding cover 17 covers the hollow hole, forming a radially closed shielding space inside the cylindrical elastic member 1, thereby achieving inward radial all-round shielding. The upper end of the outer shield 17 is folded inward to form an inner flange 171, the lower end of the inner flange 171 abuts against the upper end of the cylindrical elastic member 1, and the undercut 18 formed by the outward stamping of the upper end of the cylindrical elastic member 1 is inserted into the groove 172 on the inner wall of the upper end of the outer shield 17, so that the upper end of the outer shield 17 and the cylindrical elastic member 1 are fixed together. Figure 24 shown.

[0052] To sum up, the cylindrical elastic component of the present invention has a simple structure, and compared with conventional spring pieces, the cylindrical elastic component of the present invention has good elasticity and strength, a large elastic force value, and will not suffer fatigue damage or even breakage even under overpressure and long-life working conditions. It has an extremely long service life and can ensure the stability and quality of docking, making the present invention extremely competitive in the market.

[0053] Combine Figure 1-19The figure shows a coaxial connector, which includes: a cylindrical elastic member 1, which has a plurality of hollow holes 11 extending through the inner cavity along its outer surface, and a multi-layer elastic structure 12 formed between the hollow holes 11. The cylindrical elastic member 1 can be deformed and extended in the axial direction by the multi-layer elastic structure 12; an insulator 2, which is fixedly installed in the cylindrical elastic member 1; a central elastic ejector pin assembly 3, which is arranged at the center of the insulator 2 and coaxially arranged with the cylindrical elastic member 1, and the upper and lower ends of the central elastic ejector pin assembly 3 extend outside the upper and lower end surfaces of the insulator 2; the upper ends of the cylindrical elastic member 1 and the upper ends of the central elastic ejector pin assembly 3 both form multi-directional tolerance elastic contact with the PCB board. The cylindrical elastic member used in the coaxial connector of the present invention has a simple structure and, compared to conventional springs, has excellent elasticity and strength, a large elastic force, and will not suffer fatigue damage or even breakage even under overvoltage and long-life operating conditions, resulting in an extremely long service life and ensuring docking stability and quality. Because the upper end of the cylindrical elastic member 1 and the upper end of the central elastic ejector pin assembly 3 are both elastically retractable, they can ensure the stability of docking with the PCB board. The cylindrical elastic member 1 can be energized for grounding, and the central elastic ejector pin assembly 3 can be energized for signal transmission, ensuring communication quality. In addition, the coaxial connector of the present invention also has a multi-directional tolerance function. That is, when there is an installation error in the distance between the two PCB boards, the cylindrical elastic member 1 and the central elastic ejector pin assembly 3 in the coaxial connector of the present invention can automatically contract axially to ensure that the cylindrical elastic member 1 and the central elastic ejector pin assembly 3 are always pressed against the gold fingers of the PCB board, forming stable contact and having good communication quality, making the present invention highly competitive in the market.

[0054] The cylindrical elastic member 1 has a double-layer structure with flanging, specifically, it includes an outer double-layer structure with flanging and an inner double-layer structure with flanging.

[0055] Combine Figure 7-9 As shown, the cylindrical elastic member 1 with an outer flanging double-layer structure is as follows: the upper end of the cylindrical elastic member 1 is folded outward to form an outer shielding ring 15, which covers the hollow hole 11, so that the cylindrical elastic member 1 forms an axially deformable shielding space inside the cylindrical elastic member 1, thereby ensuring that the central elastic ejector assembly 3 installed inside the cylindrical elastic member 1 can communicate stably and prevent external noise from entering and affecting the signal transmission of the central elastic ejector assembly 3. The lower end of the insulator 2 is formed with a convex ring portion 21; the middle part of the cylindrical elastic member 1 is formed with a plurality of first flanging claws 103, and the lower end of the cylindrical elastic member 1 is formed with a plurality of second flanging claws 104 that can serve as SMT solder feet. Figure 8As shown, the first flanging claw 103 is pressed onto the upper end of the convex ring portion 21, and the second flanging claw 104 is pressed onto the lower end of the convex ring portion 21, and the convex ring portion 21 is positioned in contact with the inner wall of the cylindrical elastic member 1 to ensure the stability of the assembly of the insulator 2 and the cylindrical elastic member 1.

[0056] Combine Figure 10-13 As shown, the cylindrical elastic component 1 with an inner flanging double-layer structure is as follows: the upper end of the cylindrical elastic component 1 is folded inward to form an inner shielding ring 16, and the outer periphery of the insulator 2 is also fixedly covered with an inner shielding shell 4. The upper end of the inner shielding shell 4 and the lower end of the inner shielding ring 16 are staggered to form an axially deformable shielding space inside the cylindrical elastic component 1, thereby ensuring that the central elastic ejector assembly 3 installed inside the cylindrical elastic component 1 can communicate stably and prevent external noise from entering and affecting the signal transmission of the central elastic ejector assembly 3. In addition, a number of elastic claws 41 are formed on the upper end of the inner shielding shell 4, and the elastic claws 41 are in elastic contact with the inner shielding ring 16. A convex ring portion 21 is formed on the outer periphery of the lower end of the insulator 2, and a convex ring sleeve 42 is provided at the lower end of the inner shielding shell 4, combined with Figure 12 As shown, the convex ring sleeve 42 is sleeved on the outer periphery of the convex ring portion 21 ; a plurality of first flanging claws 103 are formed in the middle of the cylindrical elastic member 1 , and the first flanging claws 103 are pressed onto the upper end of the convex ring sleeve 42 .

[0057] It can also be a structure like this: an outer shielding cover 17 is provided on the outer periphery of the cylindrical elastic member 1, and the outer shielding cover is an independent metal part. The outer shielding cover 17 covers the hollow hole, and a radially closed shielding space is formed inside the cylindrical elastic member 1, thereby achieving all-round shielding of the inner radial direction. The upper end of the outer shielding cover 17 is folded inward to form an inner flange 171, and the lower end of the inner flange 171 abuts against the upper end of the cylindrical elastic member 1, and the undercut 18 formed by stamping outward from the upper end of the cylindrical elastic member 1 is inserted into the groove 172 on the inner wall of the upper end of the outer shielding cover 17, so that the upper end of the outer shielding cover 17 is fixed together with the cylindrical elastic member 1, see Figure 24 shown.

[0058] Combine Figure 14-16 As shown, the coaxial connector of the present invention is a board-to-board coaxial connector that can achieve full shielding. In use, the lower end of the board-to-board coaxial connector is soldered to the first PCB, while the upper end of the board-to-board coaxial connector elastically contacts the other PCB. The central elastic ejector pin assembly 3 functions as a signal transmission, while the cylindrical elastic member 1 provides elastic full shielding.

[0059] The second flanged claw 104 not only secures the insulator but also serves as an SMT solder pin, achieving a dual purpose. When the second flanged claw 104 serves as an SMT solder pin, the corresponding soldering surface is formed on the lower end of the central elastic ejector pin assembly 3, allowing the coaxial connector of the present invention to function as an SMT coaxial connector. Alternatively, the lower end surface of the cylindrical elastic member 1 is formed with a socket-shaped solder pin 13; correspondingly, the lower end of the central elastic ejector pin assembly 3 is formed with a pin 301. The socket-shaped solder pin 13 and the pin 301 are inserted into the PCB board and soldered to secure and connect, forming a pin-type coaxial connector.

[0060] Combine Figure 7-16 As shown, the central elastic ejector pin assembly 3 includes a metal sleeve 31 fixedly mounted in the central hole of the insulator 2, a central elastic ejector pin 32 mounted in the metal sleeve 31 and capable of sliding within the metal sleeve 31 and unable to separate from the metal sleeve 31, and a spring 33 mounted between the central elastic ejector pin 32 and the metal sleeve 31. The upper end of the central elastic ejector pin 32 extends beyond the upper end of the metal sleeve 31 under the elastic force of the spring 33. The lower end of the metal sleeve 31 is provided with an SMT soldering surface, or alternatively, a pin 301 is formed on the lower end of the metal sleeve 31.

[0061] The central elastic ejector pin 32 has an axial elastic expansion and contraction function and an elastic height limiter. The central elastic ejector pin 32 and the cylindrical elastic member 1 form a coaxial characteristic to transmit radio frequency coaxial signals and current transmission.

[0062] The insulating body 2 is provided with a clearance groove 22 on the periphery of the middle part to form a space to avoid the downward compression of the multi-layer elastic structure 12 in the cylindrical elastic member 1, so as to ensure that the expansion and contraction deformation of the cylindrical elastic member 1 can proceed smoothly.

[0063] The following is an example of a cylindrical elastic member 1 with a double-layer structure and an S-shaped multi-layer elastic structure 12.

[0064] Combine Figure 14 As shown, assuming that the theoretical distance between the two PCB boards 100 and 200 is the ideal working state, the gap between the cylindrical elastic members 1 in the coaxial connector of the present invention (i.e., the height of the hollow hole) is X, and the overlap value between the lowermost hollow hole in the cylindrical elastic member 1 and the lower end of the outer shielding ring 15 is Y; combined Figure 15 As shown, when the distance between the two PCB boards 100 and 200 is increased to the upper limit, the gap between the cylindrical elastic members 1 (i.e., the height of the hollow hole) is X+, and the overlap value between the lowermost hollow hole in the cylindrical elastic member 1 and the lower end of the outer shielding ring 15 is Y-; combined Figure 16As shown in FIG. 1 , when the distance between the two PCB boards 100 and 200 is reduced to the lower limit, the gap between the cylindrical elastic members 1 (i.e., the height of the hollow hole) is X-, and the overlap value between the lowest hollow hole in the cylindrical elastic member 1 and the lower end of the outer shielding ring 15 is Y+. In short, regardless of whether the distance between the two PCB boards 100 and 200 fluctuates within the effective error range, the cylindrical elastic member 1 in the coaxial connector of the present invention can completely shield the central elastic ejector pin and prevent external signal interference.

[0065] In addition, when different installation distances are required between the two PCB boards 100 and 200, the height of the entire cylindrical elastic member 1 can be adjusted by adjusting the height "H" or "H'" of other parts of the non-multi-layer elastic structure 12 in the cylindrical elastic member 1 to meet the use requirements. Figure 19 shown.

[0066] In summary, the cylindrical elastic member used in the coaxial connector of the present invention has a simple structure. Compared with conventional springs, the cylindrical elastic member has excellent elasticity and strength, a large elastic force value, and will not suffer fatigue damage or even breakage even under overvoltage and long-life working conditions, thus having an extremely long service life and ensuring the stability and quality of docking. Because the upper end of the cylindrical elastic member 1 and the upper end of the central elastic ejector pin assembly 3 are both elastically retractable, the stability of docking with the PCB board can be ensured. Moreover, the cylindrical elastic member 1 can be energized to achieve grounding, and the central elastic ejector pin assembly 3 can be energized to achieve signal transmission, ensuring communication quality. In addition, the coaxial connector of the present invention also has a multi-directional tolerance function, that is, when there is an installation error in the distance between the two PCB boards, the cylindrical elastic member 1 and the central elastic ejector pin assembly 3 in the coaxial connector of the present invention can automatically contract axially to ensure that the cylindrical elastic member 1 and the central elastic ejector pin assembly 3 are always pressed against the gold finger of the PCB board and form stable contact, with good communication quality, making the present invention highly competitive in the market.

[0067] In addition to the board-to-board installation described above, the coaxial connector of the present invention also has the following installation methods: Figure 17-18 As shown, the lower end of the coaxial connector is mounted on a flange adapter 5, which is provided with a threaded section 51 and is screwed into the device 6 through the threaded section 51. The upper end of the flange adapter 5 is provided with a mounting ring 52, which is fixed between the lower end of the insulator 2 and the lower end of the cylindrical elastic member 1. The lower end of the central elastic ejector assembly 3 passes through the flange adapter 5 and extends outside the lower end of the flange adapter 5, or the lower end of the central elastic ejector assembly 3 is inserted into the lower end hole of the flange adapter 5. The upper end of the coaxial connector of the present invention is in elastic contact with the PCB board, and the coaxial connector application also has the function of multi-directional tolerance.

[0068] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A cylindrical elastic member, characterized in that: The cylindrical elastic member is provided with a plurality of hollow holes penetrating the inner cavity along its outer surface, and a multi-layer elastic structure is formed between the hollow holes. The cylindrical elastic member can be stretched and deformed in the axial direction through the multi-layer elastic structure. The cylindrical elastic member has a double-layer structure with a flange, and the upper end of the cylindrical elastic member is folded outward to form an outer shielding ring, which is an outer-flange double-layer structure; wherein the outer shielding ring covers the hollow hole, so that a radially closed shielding space is formed inside the cylindrical elastic member, thereby achieving inward radial all-round shielding; or, the upper end of the cylindrical elastic member is folded inward to form an inner shielding ring, which is an inner-flange double-layer structure; or, an outer shielding cover is sleeved on the periphery of the cylindrical elastic member, and the outer shielding cover is an independent metal part, which covers the hollow hole, and a radially closed shielding space is formed inside the cylindrical elastic member, thereby achieving inward radial all-round shielding, the upper end of the outer shielding cover is folded inward to form an inner flange, the lower end of the inner flange abuts against the upper end of the cylindrical elastic member, and the undercut formed by stamping outward on the upper end of the cylindrical elastic member is inserted into the groove on the inner wall of the upper end of the outer shielding cover, so that the upper end of the outer shielding cover is fixed to the cylindrical elastic member.

2. A cylindrical elastic member according to claim 1, characterized in that: The multi-layer elastic structure is in a continuous S-shape, or a continuous fish-scale shape, or a continuous diamond shape, or a continuous wave shape, or a continuous crescent shape, or a continuous ellipse shape.

3. The cylindrical elastic member according to claim 1, characterized in that: The lower end surface of the cylindrical elastic component is formed with a socket-type solder foot or an SMT solder foot; the cylindrical elastic component is formed by rolling a metal sheet, and the two ends of the metal sheet are butted together and the seams are laser welded to fix them into a cylindrical shape, or, the two ends of the metal sheet are formed with a dovetail clip and a dovetail slot, and the dovetail clip and the dovetail slot are buckled together and pressed into a cylindrical shape.

4. A coaxial connector, characterized in that: It includes: A cylindrical elastic member having a plurality of hollow holes extending inwardly through the inner cavity of the cylindrical elastic member along its outer surface, and a multi-layer elastic structure formed between the hollow holes, wherein the cylindrical elastic member can be stretched and deformed in the axial direction through the multi-layer elastic structure; an insulator fixedly mounted in the cylindrical elastic member; A central elastic ejector pin assembly is disposed at the center of the insulator and is coaxially disposed with the cylindrical elastic member, with both upper and lower ends of the central elastic ejector pin assembly extending beyond the upper and lower end surfaces of the insulator; The upper end of the cylindrical elastic member and the upper end of the central elastic ejector assembly both form elastic contact with the PCB board with multi-directional tolerance; The cylindrical elastic component is provided with a flanging double-layer structure, including an outer flanging double-layer structure and an inner flanging double-layer structure; the cylindrical elastic component with an outer flanging double-layer structure is as follows: the upper end of the cylindrical elastic component is folded outward to form an outer shielding ring, and the outer shielding ring covers the hollow hole, so that an axially deformable shielding space is formed inside the cylindrical elastic component, and thereby ensures that the central elastic ejector pin assembly installed inside the cylindrical elastic component can communicate stably and prevent external noise from entering and affecting the transmission signal of the central elastic ejector pin assembly; the cylindrical elastic component with an inner flanging double-layer structure is as follows: the upper end of the cylindrical elastic component is folded inward to form an inner shielding ring, and the outer periphery of the insulator is also fixedly covered with an inner shielding shell, and the upper end of the inner shielding shell is staggered with the lower end of the inner shielding ring to make the cylindrical A shielding space that can be axially deformed is formed inside the cylindrical elastic component, thereby ensuring that the central elastic ejector pin assembly installed inside the cylindrical elastic component can communicate stably and prevent external noise from entering and affecting the signal transmission of the central elastic ejector pin assembly; or, an outer shielding cover is provided on the periphery of the cylindrical elastic component, and the outer shielding cover is an independent metal part. The outer shielding cover covers the hollow hole, and a radially closed shielding space is formed inside the cylindrical elastic component, thereby achieving all-round shielding of the inner radial direction. The upper end of the outer shielding cover is folded inward to form an inner flange, and the lower end of the inner flange abuts against the upper end of the cylindrical elastic component, and the undercut formed by stamping the upper end of the cylindrical elastic component outward is inserted into the groove on the inner wall of the upper end of the outer shielding cover, so that the upper end of the outer shielding cover is fixed to the cylindrical elastic member.

5. The coaxial connector according to claim 4, characterized in that: A convex ring portion is formed on the outer periphery of the lower end of the insulator; a plurality of first flanging claws are formed in the middle of the cylindrical elastic component, and a plurality of second flanging claws that can be used as SMT solder feet are formed at the lower end of the cylindrical elastic component. The first flanging claws are pressed onto the upper end of the convex ring portion, and the second flanging claws are pressed onto the lower end of the convex ring portion, and the convex ring portion is positioned in contact with the inner wall of the cylindrical elastic component.

6. The coaxial connector according to claim 4, characterized in that: A convex ring portion is formed on the periphery of the lower end of the insulator, and a convex ring sleeve is provided at the lower end of the inner shielding shell, which is sleeved on the periphery of the convex ring portion; a plurality of first flanging claws are formed in the middle of the cylindrical elastic component, and the first flanging claws are pressed onto the upper end of the convex ring sleeve.

7. A coaxial connector according to any one of claims 4 to 6, characterized in that: The coaxial connector is installed on a flange joint, a threaded section is provided at the lower end of the flange joint, and the flange joint is screwed into the equipment through the threaded section, wherein a mounting ring is provided at the upper end of the flange joint, and the mounting ring is fixed between the lower end of the insulator and the lower end of the cylindrical elastic component.

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