Low-cost reliably grounded welding-free radio frequency contact

Abstract

The utility model discloses a welding-free radio frequency contact element with low cost and reliable grounding, relates to the technical field of radio frequency connectors, and solves the problem of complex processing procedures of the radio frequency contact element in the prior art. The electric connector comprises an outer shell and an inner shell which are sleeved inside and outside, an inner supporting assembly is arranged in the inner shell, and the inner shell is matched with an inner contact piece through the inner supporting assembly; a grounding circular ring is arranged on the outer side of the inner shell in a sliding mode, an elastic supporting piece is arranged between the grounding circular ring and the inner shell or the outer shell, an elastic closing-in part is arranged on the grounding circular ring, the elastic closing-in part is matched with the outer side wall of the inner shell, and an anti-disengaging structure is arranged between the elastic closing-in part and the inner shell in a matched mode. The elastic closing-up part is arranged on the grounding circular ring, so that the existing working procedures such as opening expansion force testing of the inner shell are avoided, and the processing complexity and cost are reduced. By arranging the elastic supporting piece, the grounding circular ring can be supported in a floating mode; and the inner support assembly is arranged to provide floating support for the inner contact piece, so that the connection stability is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to radio frequency connector technical field especially points to a low -cost reliable grounding's exempt from welding radio frequency contact piece. BACKGROUND

[0002] The vertical surface -mounting radio frequency contact piece for printed board commonly adopts the structure form of exempt from welding to connect, the structure form of exempt from welding includes hard connection structure and floating connection, the inner and outer conductors of the connector of hard connection class cannot float, and the contact is bad in the vibration impact environment, and signal instantaneous breakage is caused. The connector of floating connection class needs to have stable mechanical properties and electrical properties of reliable signal transmission in the process that the inner and outer conductors float, and stability and reliability of transmission become the key index of evaluating radio frequency connector.

[0003] The vertical surface -mounting radio frequency contact piece structure of inner and outer conductor float, such as the exempt from welding vertical surface -mounting radio frequency contact piece and module of Chinese invention patent publication No. 202110961398.5, the structure form that the outer conductor adopts elastic shell cooperation spring and ground ring can guarantee that the ground ring floats and reliably contacts with internal elastic shell, and reliably transmits in the vibration environment, but because the elastic shell processing procedure is complex, needs to rise the mouth and cooperate heat treatment procedure, and the cost is higher, cannot satisfy the market demand of low -cost integrated ground. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the above background art, the utility model provides a low -cost reliable grounding's exempt from welding radio frequency contact piece, which solves the problem of complex processing procedure of the radio frequency contact piece in the prior art.

[0005] The technical scheme of the utility model is as follows: a low -cost reliable grounding's exempt from welding radio frequency contact piece, including the outer shell and the inner shell of inner and outer sleeve, the inner shell is equipped with inner support assembly, and is matched with the inner contact through the inner support assembly;The ground ring is slidably arranged on the outer side of the inner shell, and the elastic support is arranged between the ground ring and the inner shell or the outer shell, the elastic support is arranged on the ground ring, the elastic support is matched with the outer side wall of the inner shell, and the anti -fall structure is arranged between the elastic support and the inner shell.

[0006] Preferably, the elastic support includes a plurality of elastic piece parts arranged circumferentially along the ground ring, and a slot is arranged between adjacent elastic piece parts.

[0007] Preferably, the anti -fall structure includes a step I arranged at the end of the elastic piece part and a step II arranged on the inner shell, and the step I and the step II are overlapped. The step I and the inner shell are interference -fitted, and the step II and the elastic piece part are clearance -fitted. The distance from the matching surface of the step I and the step II to the end surface of the outer shell is greater than or equal to the distance to the slot bottom.

[0008] Preferably, the elastic support is a spring, one end of the elastic support is matched with the end face of the step I, and a step III for supporting the other end of the elastic support is arranged on the outer wall of the inner shell or the inner wall of the outer shell.

[0009] Preferably, the inner support assembly comprises an insulator arranged in the inner shell, an inner hole is arranged at the axis of the insulator, a hair button is arranged in the inner hole, and an inner contact is arranged at the front end of the hair button.

[0010] Preferably, the inner contact is a convex fixed cap, the inner hole of the insulator is provided with a step IV matched with the convex fixed cap, and the convex fixed cap and the inner hole and the hair button and the inner hole are gap matched. The inner shell is provided with a step V matched with the insulator, and the outer shell and the inner shell are interference matched.

[0011] Preferably, the tail of the inner shell is provided with a plug pin, the plug pin is fixedly connected with the inner shell through an insulating medium, and the plug pin is matched with the end of the hair button.

[0012] The utility model discloses a floating connection structure of the grounding ring of the welding-free radio frequency contact piece, which comprises a grounding ring, an inner shell and an outer shell. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment description, obviously, the drawings in the following description only are some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0014] Figure 1 It is the cross section structure schematic diagram of the radio frequency contact piece of the utility model;

[0015] Figure 2 It is the grounding ring structure schematic diagram of the utility model;

[0016] Figure 3 It is the outer shell structure schematic diagram of the utility model;

[0017] In the figure: 1: outer shell, 2: inner shell, 4: inner contact, 5: grounding ring, 6: elastic support, 7: elastic closing part, 71: elastic piece part, 72: slot, 81: step I, 82: step II, 61: step III, 31: insulator, 32: hair button, 311: step IV, 21: step V, 22: pin. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] As shown in Figure 1 , 2 Embodiment 1, a low-cost reliable grounding welding-free radio frequency contact, comprising outer shell 1 and inner shell 2 sleeved outside and inside, in the embodiment, the outer shell 1 and the inner shell 2 are inserted and fit, and the fixed connection between the two is realized. The inner support assembly is arranged in the inner shell 2, and the inner support assembly cooperates with the inner contact 4, the inner support assembly gives the floating support to the inner contact 4, so that the floating connection can be realized when being connected and used, and the stability of the connection is ensured. The grounding ring 5 is arranged on the outer side of the inner shell 2 and slides, the elastic support 6 is arranged between the grounding ring 5 and the inner shell 2 or the outer shell 1, the elastic support can elastically support the grounding ring, and the floating of the grounding ring is realized. In the embodiment, the elastic closing part 7 is arranged on the grounding ring 5, and the elastic closing part 7 cooperates with the outer side wall of the inner shell 2. In the embodiment, the related structure function for floating connection purpose in the prior art is changed to the form of the elastic closing part 7 and arranged on the grounding ring 5, so that the expansion force test and heat treatment processes during processing in the prior art are avoided, and the processing complexity and cost are reduced. Further, the anti-disengagement structure is arranged between the elastic closing part 7 and the inner shell 2, the arrangement of the anti-disengagement structure can avoid the elastic closing part from being disengaged from the inner shell in the non-use state, and the reliability of the floating connection is improved.

[0020] As a further specific embodiment, the elastic closing part 7 comprises a plurality of elastic sheet parts 71 arranged circumferentially along the grounding ring 5, and a plurality of slots 72 arranged between adjacent elastic sheet parts 71. Since the grounding ring is short in length, the length of the slots is limited, and the wall thickness of the elastic sheet part of the grounding ring is thick, so the number of slots should be as large as possible, and the width of the slots should be as large as possible. In this embodiment, eight slots 72 are arranged on the grounding ring, corresponding to eight elastic sheet parts, which are arranged in a closing state, so that the end part is in elastic contact with the inner shell. The grounding ring can be made of tin bronze material, and the elastic closing part 7 is formed by machining, and the structure of the eight elastic sheet parts 71 of the grounding ring is designed as a slope, which can simulate the shape after closing, thereby reducing the cost of closing test force. At the same time, since the material of the grounding ring is tin bronze, it does not need to be heat treated, and the processing cost can also be reduced.

[0021] When the grounding ring is stressed to retreat, it is equivalent to the process of plugging the elastic closing part and the inner shell, at this time a certain plugging force will be generated, which can ensure the reliable contact between the grounding ring and the inner shell, ensure the stability of signal transmission, make the electromagnetic wave in the chain link propagate along the medium channel inside the inner shell, and not make the current propagate along the elastic support, at the same time, increase the contact pressure between the grounding ring and the outer pad of the printed board, and improve the shielding performance of the product. This embodiment significantly improves the grounding cost of the solderless radio frequency contact, conforms to the market trend of the current radio frequency connector, and reduces the complexity of the existing assembly process in a floating connection mode. Compared with the conventional welding connection mode, the maintainability is improved.

[0022] In embodiment 2, a low-cost and reliable solderless radio frequency contact is provided, which is based on embodiment 1. The anti-disengagement structure comprises a step I 81 arranged at the end of the elastic sheet part 71 and a step II 82 arranged on the inner shell 2, and the step I 81 and the step II 82 are overlapped. Specifically, in this embodiment, the step I 81 is in interference fit with the outer wall of the inner shell 2, and the step II 82 is in clearance fit with the elastic sheet part 71. Under the elastic action of the elastic sheet part, the interference fit can maintain the communication between the step I and the inner shell, achieve the purpose of elastic connection, realize the floating termination of the grounding ring and the outer pad of the printed board, and maintain the connection reliability. The interference amount of the two should be as small as possible to ensure that the grounding ring can reliably cooperate with the inner shell when floating, and the friction between the two should be as small as possible to ensure that the elastic force of the elastic support is greater than the friction so that it can be smoothly rebounded.

[0023] As a further specific embodiment, the distance from the mating surface of the step I 81 to the end surface of the outer shell 1 is greater than or equal to the distance to the bottom of the slot 72. In this embodiment, the length of the slot is minimized so that the slot does not leak out of the outer shell or leaks out of the outer shell as little as possible, thereby preventing leakage of the radio frequency channel. Under the action of the elastic support, the corresponding mating surfaces between the step I and the step II are in contact with each other, at this time the slot 72 is completely covered by the inner shell and the outer shell in the axial direction, avoiding the leakage of the radio frequency channel.

[0024] In this embodiment, the grounding ring compression spring realizes axial sliding, the height of the grounding ring exposed to the shell 1 determines the axial floating distance of the contact end surface.

[0025] In addition, the elastic support 6 is a spring, which can be made of stainless steel wire material. One end of the elastic support 6 is matched with the end surface of the step I 81, and the inner wall of the inner shell 2 or the inner wall of the outer shell 1 is provided with a step III 61 for supporting the other end of the elastic support 6. In this embodiment, as shown in the figure, the step III is provided on the inner wall of the outer shell as a step hole to provide axial support for the spring. The elastic support 6 is gap matched with the inner wall of the outer shell to ensure smooth rebound. The spring is in a pre-compressed state and can push the step I and the step II into contact after installation. During installation and use, the grounding ring contacts the outer pad of the printed board and moves back along the axial direction while compressing the elastic support. The elastic support provides a positive pressure to ensure that the grounding ring reliably and stably contacts the outer pad of the printed board. At this time, the grounding ring is in elastic contact with the printed board, the step I and the step II are separated, and the step I maintains contact with the outer wall of the inner shell to maintain the connected state. Figure 3

[0026] Embodiment 3, a low-cost and reliable solder-free radio frequency contact, based on embodiment 2, the inner support assembly includes an insulator 31 provided in the inner shell 2, an inner hole is provided at the axis of the insulator 31, a button 32 is provided in the inner hole, and the inner contact 4 is provided at the front end of the button 32. In this embodiment, the button 32 and the inner contact 4 are connected to form an inner conductor, which not only plays an electrical connection role, but also provides a certain mechanical buffer function for the inner contact 4, realizes floating connection purpose, and improves the reliability of the connection.

[0027] ​Specifically in the embodiment, the inner contact 4 is a convex fixed cap, the convex fixed cap is a rotary conductor with a convex cross section, the inner hole of the insulator 31 is provided with a step IV 311 matched with the convex fixed cap, so that the step IV 311 is used to axially limit the convex fixed cap, the front end of the convex fixed cap extends out of the insulator, so as to elastically contact and connect with the inner pad of the actual printed board, and signal transmission is realized. In the embodiment, the convex fixed cap and the inner hole and the hair button 32 and the inner hole are gap matched, so as to meet the use of extruding the hair button after the convex fixed cap contacts the pad, and the gap matching mode can provide the hair button and the convex fixed cap with a movement allowance.

[0028] In addition, the inner shell 2 is provided with a step V 21 matched with the insulator 31, which is used to assemble and support the insulator and realize step compensation. The step V 21 can limit the axial position of the insulator, so as to avoid the movement of the insulator and affect the connection stability.

[0029] In the embodiment 4, a low-cost reliable grounding welding-free radio frequency contact is provided, and on the basis of the embodiment 3, the inner shell 2 is provided with a pin 22 at the tail axis, the pin 22 and the inner shell 2 are fixedly connected through an insulating medium, the insulating medium can be selected from conventional materials such as glass tubes. The pin 22 is matched with the end of the hair button 32, so as to limit the back movement of the hair button, and simultaneously play a role of a conductive channel.

[0030] The embodiment ensures the transmission reliability of the welding-free radio frequency contact on the basis of maintaining the maintainability, improves the vibration stability, and simultaneously reduces the cost of the grounding structure of the welding-free radio frequency contact through the design of the grounding ring.

[0031] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A low cost, reliable ground, solderless radio frequency contact, characterized by: The application relates to a shell which comprises an outer shell (1) and an inner shell (2), the inner shell (2) is internally provided with an inner support assembly, and the inner support assembly is matched with an inner contact (4); a grounding ring (5) is slidably arranged on the outer side of the inner shell (2), elastic supporting pieces (6) are arranged between the grounding ring (5) and the inner shell (2) or the outer shell (1), elastic closing portions (7) are arranged on the grounding ring (5), the elastic closing portions (7) are matched with the outer side wall of the inner shell (2), and anti-disengagement structures are arranged between the elastic closing portions (7) and the inner shell (2).

2. The low cost reliable grounded solderless RF contact of claim 1, wherein: The elastic closing portions (7) comprise a plurality of elastic sheet portions (71) which are arranged along the circumference of the grounding ring (5), and slots (72) are arranged between adjacent elastic sheet portions (71).

3. The low cost, reliable ground, solderless RF contact of claim 2, wherein: The anti-disengagement structures comprise a step I (81) arranged at the end of the elastic sheet portion (71) and a step II (82) arranged on the inner shell (2), and the step I (81) and the step II (82) are overlapped.

4. The low cost, reliable ground, solderless RF contact of claim 3, wherein: The step I (81) is in interference fit with the outer wall of the inner shell (2), and the step II (82) is in clearance fit with the elastic sheet portion (71).

5. The low cost, reliable ground, solderless RF contact of claim 4, wherein: The distance from the matching surface of the step I (81) and the step II (82) to the end surface of the outer shell (1) is greater than or equal to the distance to the slot bottom of the slot (72).

6. The low cost reliable grounded solderless RF contact of claim 5, wherein: The elastic supporting piece (6) is a spring, one end of the elastic supporting piece (6) is matched with the end surface of the step I (81), and a step III (61) for supporting the other end of the elastic supporting piece (6) is arranged on the outer wall of the inner shell (2) or the inner wall of the outer shell (1).

7. The low cost, reliable ground, solderless RF contact of any of claims 1-6, wherein: The inner support assembly comprises an insulator (31) arranged in the inner shell (2), an inner hole is arranged at the axis of the insulator (31), a snap button (32) is arranged in the inner hole, and the inner contact (4) is arranged at the front end of the snap button (32).

8. The low cost, reliable ground, solderless RF contact of claim 7, wherein: The inner contact (4) is a convex-shaped fixed cap, the inner hole of the insulator (31) is provided with a step IV (311) matched with the convex-shaped fixed cap; the convex-shaped fixed cap and the inner hole are in clearance fit, and the snap button (32) and the inner hole are also in clearance fit.

9. The low cost, reliable ground, solderless RF contact of claim 8, wherein: The inner shell (2) is provided with a step V (21) matched with the insulator (31); the outer shell (1) and the inner shell (2) are in interference fit.

10. The low cost, reliable ground, solderless RF contact of claim 9, wherein: The inner shell (2) is provided with a plug pin (22) at the tail axis, the plug pin (22) is fixedly connected with the inner shell (2) through an insulating medium, and the plug pin (22) is matched with the end portion of the snap button (32).

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