Floating grounding fuzz button connector

Abstract

The invention provides a floating grounding fuzz button connector, which comprises an outer conductor assembly, an inner conductor assembly and an insulating medium assembly, and is characterized in that the inner conductor assembly is fixed in the outer conductor assembly through the insulating medium assembly, and the outer conductor assembly comprises a first outer conductor, a second outer conductor, a third outer conductor and a spring; the second outer conductor comprises a base part and an extending part, the base part is in interference fit with an inner cavity of the first outer conductor, the extending part is provided with a groove which extends to the connecting end in the axial direction to form an opening, the third outer conductor and the second outer conductor are connected in a sliding mode through a barb structure, the spring is arranged on the outer side of the extending part, and the two ends of the spring abut against the base part and the third outer conductor respectively. According to the connector, the assembly process can be simplified, and the structural stability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of connectors, and in particular relates to a floating grounding button connector. Background Art

[0002] The button contact is a cylindrical part made of highly elastic conductive metal wire randomly and densely wound, which can achieve 15% to 30% elastic compression in the axial direction. This type of contact is suitable for applications such as high density, long life, high reliability, high frequency and high speed transmission, and low contact force. Due to its special structure, it does not form the induction coil effect of the spring, reduces the signal path length and skin effect, increases the integrity and strength of the structure, forms multiple points of parallel redundant contact inside and outside, and has the advantages of small mutual inductance, small capacitance and low contact resistance.

[0003] In coaxial connectors, the fur button is usually used as an elastic contact for signal transmission, and a grounded outer conductor is also required on its periphery to achieve better signal shielding and other purposes. Especially in the application of printed circuit boards, in order to meet the stable connection between the connector and the grounding components on the printed circuit board, the grounding and signal transmission components are usually set to double floating to overcome the adverse effects of the dimensional error of the interconnection between the boards on the connection performance.

[0004] Document 1 discloses a dual-floating RF coaxial connector, which includes an outer conductor assembly and an inner conductor assembly; the end of the outer conductor assembly has an external floating structure composed of a second outer conductor, a third outer conductor, a spring and a fifth outer conductor, and the spring provides floating support for the third outer conductor.

[0005] Document 2 discloses a double-floating wool button coaxial sealed connector, which includes an outer contact, a center contact, a glass insulator, a solid wool button, an engineering plastic insulator, a hollow wool button, a protective cap and a clamping ring. The outer contact, the hollow wool button and the clamping ring form an external floating structure, and the hollow wool button provides floating support for the clamping ring.

[0006] In the prior art, the structural design of this type of floating connector mostly uses elastic parts to cooperate with the supporting grounded outer conductor to achieve the floating of the grounded outer conductor, but there is still the problem of complex assembly process, and the structural stability needs to be further improved.

[0007] Document 1: Chinese patent document CN114665344A;

[0008] Document 2: Chinese patent document CN113161787A. Summary of the invention

[0009] This application mainly solves the problem of complicated assembly process of floating connector in the prior art. To solve this technical problem, a floating grounding button connector is proposed. The specific technical solution is as follows:

[0010] A floating grounding button connector comprises an outer conductor component, an inner conductor component and an insulating medium component, wherein the inner conductor component is fixed in the outer conductor component through the insulating medium component, and the outer conductor component comprises an outer conductor 1, an outer conductor 2, an outer conductor 3 and a spring;

[0011] The outer conductor 2 includes a base and an extension, the base is interference-fitted with the inner cavity of the outer conductor 1, the extension has a groove extending axially to the connection end to form an opening, the outer conductor 3 and the outer conductor 2 are slidably interconnected by a barb structure,

[0012] The spring is arranged outside the extension part, and two ends of the spring respectively contact the base part and the outer conductor three.

[0013] Furthermore, the barb structure includes an inner barb arranged on the outer conductor three and an outer barb arranged on the outer conductor two, the edge of the outer barb is provided with a chamfer, and / or the edge of the inner barb is provided with a second chamfer.

[0014] Furthermore, the insulating dielectric component includes an insulating dielectric body, the outer wall of the insulating dielectric body has a groove 1, and the inner wall of the extension portion has a groove 2. In the assembled state, the groove 1 and the groove 2 conflict with each other in the opposite direction to limit the insulating dielectric body from sliding out of the floating end, and there is a gap between the insulating dielectric body and the extension portion from the groove 1 to the floating end.

[0015] Furthermore, the extension portion is in an outwardly expanding trumpet shape in a natural state, and forms a radial extrusion force between the extension portion and the outer conductor three in an assembled state.

[0016] Furthermore, a portion of the outer conductor covers the outer conductor three, and the inner diameter of the outer conductor one matches the outer diameter of the outer conductor three.

[0017] Furthermore, the inner wall of the outer conductor 1 is provided with a step surface 1, and the base of the outer conductor 2 is press-fitted on the step surface 1.

[0018] Furthermore, an annular groove is provided on the outer wall of the outer conductor 1, and a sealing ring is embedded in the annular groove.

[0019] Furthermore, the inner conductor assembly includes an inner conductor, a wool button and a protective cap, wherein the wool button is arranged between the inner conductor and the protective cap, the inner conductor is fixed to the outer conductor, and the wool button and the protective cap are movably arranged in the insulating medium assembly.

[0020] Furthermore, the inner conductor is fixed in the outer conductor 1 through a glass body, and the glass body is sintered.

[0021] The beneficial effects of the present invention are:

[0022] (1) Simplify the assembly process. The outer conductor 3 and the outer conductor 2 are interconnected by sliding by using a barb structure, so that the outer conductor 3, the outer conductor and the spring as a whole form a stable floating structure. In addition to the sintering process, the connector is assembled by two press-fit combinations, that is, the outer conductor 2 is pressed into the outer conductor 1, and the outer conductor 3 is pressed onto the outer conductor 2. The remaining parts can be placed in a conventional manner.

[0023] (2) The structure has better stability. Since the spring is arranged between the outer conductor 3 and the outer conductor 2, and the outer conductor 3 and the outer conductor 2 are interconnected by a barb structure, the force of the spring is limited to the inner part of the outer conductor 3 and the outer conductor 2, and will not act on other parts. Therefore, the force of the spring can avoid causing failure of the press-fit structure;

[0024] (3) The inwardly contracted groove 1 on the insulating dielectric body not only cooperates with the groove 2 on the outer conductor 2 to achieve the positional fixation of the insulating dielectric body, but also forms a gap between the groove 1 and the outer conductor 2, thereby forming a space that allows the outer conductor 2 to contract and deform inwardly, so as to facilitate the press-fitting of the outer conductor 3 and the outer conductor 2;

[0025] (4) The extension portion of the outer conductor 2 is configured to be in an outwardly expanded trumpet shape. On the one hand, the gap between the outer conductor 2 and the insulating dielectric body can be increased to a certain extent, thereby increasing the operable space for the extension portion to deform inwardly. On the other hand, the outwardly expanded extension portion generates a pre-pressure with the outer conductor 3 in the assembled state, so that the outer conductor 3 maintains a stable contact with the outer conductor 2, thereby ensuring the stability of the guiding performance of the outer conductor assembly as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is a schematic diagram of the floating connector assembly state;

[0027] Figure 2 What is shown is the structural schematic diagram of the outer conductor 1;

[0028] Figure 3 What is shown is the structural schematic diagram of the outer conductor 2;

[0029] Figure 4 What is shown is the structural schematic diagram of the outer conductor three;

[0030] Figure 5 Shown is a schematic diagram of the structure of an insulating dielectric body;

[0031] Figure 6 It shows Figure 3 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0032] In the following description, certain specific details are set forth in order to provide a thorough understanding of various embodiments. However, it will be appreciated by those skilled in the art that the present invention may be practiced without these details. In other cases, well-known structures are not shown or described in detail to avoid unnecessarily obscuring the description of the embodiments. Unless the context otherwise requires, throughout the specification and the appended claims, the word "comprising" shall be interpreted in an open, inclusive sense, i.e., as "including but not limited to".

[0033] In the present application, the structure of the connector mainly includes an outer conductor assembly, an inner conductor assembly and an insulating medium assembly, and the inner conductor assembly, the insulating medium assembly and the outer conductor assembly are arranged in sequence from the inside to the outside. The insulating medium assembly is used to support and fix the inner conductor assembly in the outer conductor assembly, while providing an electrical insulation environment between the outer conductor assembly and the inner conductor assembly, and ensuring that the outer conductor assembly and the inner conductor assembly are coaxial.

[0034] See also Figure 1 The outer conductor assembly is configured such that at least one end thereof is floatable, and in order to achieve floatability, the outer conductor assembly is configured as a multi-component assembly. The outer conductor assembly includes an outer conductor 11, an outer conductor 2 12, an outer conductor 3 13, and a spring 14. The outer conductor 2 12 is fixed in the outer conductor 1 11. The outer conductor 3 13 and the outer conductor 2 12 are slidably interconnected through a barb structure, and the spring 14 is disposed between the outer conductor 3 13 and the outer conductor 2 12 to support the outer conductor 3 13 and the outer conductor 2 12.

[0035] The floating end of the connector is defined as the connection end of the outer conductor assembly.

[0036] See also Figure 2 The outer conductor 11 is a hollow cylinder with a step surface 11a on its inner wall. The step surface 11a is arranged toward the floating end in the assembled state, that is, the inner diameter between the step surface 11a and the floating end is larger to facilitate the installation of the outer conductor assembly.

[0037] See also Figure 2 An annular groove 11b is provided on the outer wall of the outer conductor 11, and a sealing ring 15 is embedded in the annular groove 11b to meet the sealing requirements during connection.

[0038] See also Figure 3 The outer conductor 12 is configured as a base 12a and an extension 12b. The outer diameter of the base 12a is larger than the extension 12b so that a step surface 12c is formed at the connection between the base 12a and the extension 12b. The step surface 12c is arranged toward the floating end in the assembled state. The step surface 12c is used to provide a contact surface for the spring 14 in the assembled state.

[0039] See also Figure 3The extension portion 12b has a groove 12d, which extends axially to the connection end to form an opening, so that the extension portion 12b can be deformed and contracted inwardly when squeezed from the outside.

[0040] See also Figure 3 The side wall of the extension portion 12b has an outer barb 12e, and the outer barb 12e faces opposite to the step surface 12c.

[0041] See also Figure 4 The outer conductor three 13 has an inner barb 13a on its side wall. In the assembled state, the inner barb 13a and the outer barb 12e engage with each other, so that the outer conductor three 13 is slidably connected to the step surface two 12c through the inner barb 13a and the outer barb 12e. At the same time, the end face of the outer conductor three 13 is used to provide another contact surface for the spring 14 in the assembled state, so that the spring 14 is in a compressed state in the assembled state, and then the outer conductor three 13 is maintained in an initial stable state through the preload force of the spring 14.

[0042] See also Figure 1 The inner conductor assembly is configured to be floatable at least at one end, and the inner conductor assembly includes an inner conductor 21, a wool button 22 and a protective cap 23, wherein the inner conductor 21 is fixed to the outer conductor 11, the wool button 22 is arranged between the inner conductor 21 and the protective cap 23, and the compressibility of the wool button 22 is utilized to make the protective cap 23 a floating structure.

[0043] The inner conductor 21 is fixed in the outer conductor 11 through the glass body 31. The inner conductor 21 is passed through the outer conductor 11 by a mold and filled with glass powder and then sintered to form a glass body 31 after sintering. The glass powder is sintered to form a glass body 31, and the inner conductor 21 is encapsulated and fixed by the glass body 31.

[0044] See also Figure 5 The insulating dielectric body 32 is also a hollow cylindrical structure, and the interior is used to install the wool button 22 and the protective cap 23. The inner wall of the insulating dielectric body 32 has a step surface 32a, and the step surface 32a is opposite to the floating end, that is, the inner diameter between the step surface 32a and the floating end is smaller, which is convenient for cooperation with the protrusion on the protective cap 23, and the protective cap 23 is restricted above the step surface 32a to prevent the protective cap 23 from slipping off. The wool button 22 is filled in the hollow part of the insulating dielectric body 32. In the assembled state, the two ends of the wool button 22 are respectively in contact with the inner conductor 21 and the protective cap 23.

[0045] See also Figure 5 The outer wall of the insulating dielectric body 32 has a groove 32b, at which the outer diameter of the insulating dielectric body 32 becomes smaller, so that the outer diameter between the groove 32b and the floating end is reduced.

[0046] See also Figure 6The inner wall of the extension portion 12b has a groove 12f, and the direction of the groove 12f is opposite to the groove 1 32b. In the assembled state, the groove 1 32b conflicts with the groove 12f, so that the insulating dielectric body 32 is restricted above the groove 12f, preventing the insulating dielectric body 32 from slipping off the outer conductor 12.

[0047] In addition, in the assembled state, there is a gap between the inner wall of the extension portion 12b and the insulating dielectric body 32, and this gap allows the extension portion 12b to be retracted when deformed through the groove 12d.

[0048] The extension portion 12b is in an outwardly flared trumpet shape in its natural state. Therefore, in the assembled state, the outer hook 12e of the extension portion 12b will exert a certain extrusion pressure on the outer conductor three 13, so that the outer conductor three 13 and the outer conductor two 12 maintain stable contact, thereby ensuring the stability of the overall guiding performance of the outer conductor assembly; on the other hand, the outwardly flared trumpet shape in its natural state indirectly increases the gap between the extension portion 12b and the insulating dielectric body 32, which is more conducive to the inward deformation of the extension portion 12b when subjected to force.

[0049] The edge of the outer barb 12e is provided with a chamfer 12g, and the edge of the inner barb 13a is provided with a chamfer 13b. During press-fitting, the chamfer 12g and the chamfer 13b are smoothly transitioned to reduce the resistance of press-fitting. The chamfer 12g and the chamfer 13b can be provided at the same time, or only one can be provided.

[0050] In the assembled state, the outer conductor 11 partially covers the outer conductor 3 13 , and the inner diameter of the outer conductor 11 matches the outer diameter of the outer conductor 3 13 to maintain the stability of the outer conductor 3 13 and prevent the outer conductor 3 13 from swinging when floating.

[0051] The assembly method of the above connector in this application is:

[0052] The inner conductor 21 is passed through the outer conductor 11 by using a mold and filled with glass powder and then sintered to fix the inner conductor 21 and the outer conductor 11;

[0053] The protective cap 23 and the wool button 22 are sequentially installed into the insulating dielectric body 32, so that the protective cap 23 is restricted above the step surface 32a;

[0054] Press the outer conductor 2 12 together with the protective cap 23 and the wool button 22 into the outer conductor 1 11. The outer conductor 2 12 and the outer conductor 1 11 are interference fit, and the two ends of the wool button 22 abut against the protective cap 23 and the inner conductor 21.

[0055] The spring 14 is put on the outer conductor 2 12 , and then the outer conductor 3 13 is pressed on the outer conductor 2 12 until the inner barb 13 a and the outer barb 12 e are engaged with each other.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A floating grounded button connector, comprising an outer conductor component, an inner conductor component and an insulating medium component, wherein the inner conductor component is fixed in the outer conductor component through the insulating medium component, characterized in that: The outer conductor assembly comprises an outer conductor 1, an outer conductor 2, an outer conductor 3 and a spring; The outer conductor 2 includes a base and an extension, the base is interference-fitted with the inner cavity of the outer conductor 1, the extension has a groove extending axially to the connection end to form an opening, the outer conductor 3 and the outer conductor 2 are slidably interconnected by a barb structure, The spring is arranged outside the extension part, and two ends of the spring respectively contact the base part and the outer conductor three.

2. The floating grounding button connector according to claim 1, characterized in that: The barb structure includes an inner barb arranged on the outer conductor three and an outer barb arranged on the outer conductor two, the edge of the outer barb is provided with a chamfer, and / or the edge of the inner barb is provided with a second chamfer.

3. The floating grounding button connector according to claim 1, characterized in that: The insulating medium component includes an insulating medium body, the outer wall of the insulating medium body is provided with groove 1, and the inner wall of the extension part is provided with groove 2. In the assembled state, the groove 1 and the groove 2 are in reverse contact with each other to limit the insulating medium body from sliding out of the floating end, and there is a gap between the insulating medium body and the extension part from the groove 1 to the floating end.

4. The floating grounding button connector according to claim 3, characterized in that: The extension portion is in an outwardly expanding trumpet shape in a natural state, and forms a radial extrusion force between the extension portion and the outer conductor three in an assembled state.

5. The floating grounding button connector according to claim 1, characterized in that: A portion of the outer conductor covers the outer conductor three, and the inner diameter of the outer conductor one matches the outer diameter of the outer conductor three.

6. The floating grounding button connector according to claim 1, characterized in that: The inner wall of the outer conductor 1 is provided with a step surface 1, and the base of the outer conductor 2 is pressed on the step surface 1.

7. The floating grounding button connector according to claim 1, characterized in that: An annular groove is arranged on the outer wall of the outer conductor 1, and a sealing ring is embedded in the annular groove.

8. The floating grounding button connector according to claim 1, characterized in that: The inner conductor assembly comprises an inner conductor, a wool button and a protective cap, wherein the wool button is arranged between the inner conductor and the protective cap, and the inner conductor is fixed to the outer conductor, and the wool button and the protective cap are movably arranged in the insulating medium assembly.

9. The floating grounding button connector according to claim 8, characterized in that: The inner conductor is fixed in the outer conductor 1 through a glass body, and the glass body is sintered.

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