Elastic grounding ring

Abstract

The utility model discloses an elastic grounding ring, which comprises a holding and clamping piece which is formed by integrally bending a metal sheet and is coaxially held on an outer conductor of a coaxial line, and a part of the side wall of the holding and clamping piece is turned outwards to form a grounding elastic piece which is elastically propped against a grounding clamping groove. The grounding elastic piece comprises a supporting part integrally connected with the holding and clamping piece, a bending part bending towards the outer side direction of the holding and clamping piece, and a crimping part connected with the bending part and used for abutting against and making contact with the inner side wall of the grounding clamping groove. According to the utility model, the grounding elastic sheet is formed by outwards folding part of the side wall of the holding and clamping sheet, so that the grounding elastic sheet is simple in structure, easy to form, disassemble and assemble, low in production cost and large in contact area, and can realize stable and reliable contact with the grounding clamp and ensure effective grounding of the coaxial line under the condition of meeting the tolerance limit.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coaxial line grounding technical field, especially relate to a elastic grounding ring. BACKGROUND

[0002] Coaxial line is a kind of double-conductor transmission line, and it mainly includes sheath, outer conductor, insulating layer and inner conductor from outside to inside in structure.Coaxial line is widely used in various electronic devices as radio frequency feeder due to its small radiation loss and strong anti-interference property.The outer conductor of general coaxial line needs to be grounded, and in electronic devices, the shell of metal material is often used as grounding point to make the outer conductor electrically connected with the shell to improve the anti-interference property of signal.

[0003] For example, the main board and the sub-board in mobile phone need to be connected by coaxial line for radio frequency signal connection, and additional grounding is needed in the middle of coaxial line due to long path.Usually, the outer conductor of coaxial line is electrically connected with the shell through tubular grounding ring, the grounding ring is sleeved on the outer conductor to make the grounding ring and the outer conductor contact to realize electrical connection;The metal shell of mobile phone has a clamping groove matched with the grounding ring, and the grounding ring is located in the clamping groove to make the grounding ring and the clamping groove contact to realize electrical connection;In turn, the outer conductor is electrically connected with the shell through the grounding ring to realize grounding, thereby ensuring the quality of signal transmission.But with the popularization of 5G, the number of coaxial lines needed increases, and the frequency band used becomes higher and higher, especially for millimeter wave products, the stability requirement for signal transmission is higher and higher, so the grounding stability of connector is also higher and higher.

[0004] And the conventional ground ring is a regular metal ring, which is a hard product and does not have elasticity.In order to assemble the grounding ring into the clamping groove, the groove width of the clamping groove is usually slightly larger than the outer diameter of the grounding ring, but once the groove width of the clamping groove is larger than the outer diameter of the grounding ring, the contact between the two is poor when the device is in working or vibrating scene, which leads to unstable contact with the mobile phone middle frame, and in turn leads to poor grounding stability of coaxial line.Therefore, in order to avoid the influence of poor grounding stability on the performance of the whole machine, it is necessary to design an elastic grounding ring to ensure stable contact. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an elastic grounding ring to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] An elastic grounding ring, comprising a clamping piece formed by bending a metal sheet into a coaxial ring and embracing the outer conductor of the coaxial line, and the side wall of the clamping piece is folded outward to form a grounding spring plate in elastic contact with the grounding clamping groove.

[0008] Further, the grounding elastic sheet comprises a supporting part integrally connected with the clamping piece, a bending part bent to the outside of the clamping piece, and a pressing part connected with the bending part and used for pressing contact with the inner wall of the grounding clamping groove.

[0009] Further, the supporting part is parallel to the inner wall of the grounding clamping groove, and the bending angle of the pressing part relative to the supporting part is between 150° and 180°.

[0010] Further, the contact surface of the pressing part is a plane.

[0011] Further, the grounding elastic sheet is at least two, and is symmetrically arranged on both sides of the clamping piece.

[0012] Further, the material of the clamping piece is stainless steel.

[0013] Compared with the prior art, the elastic grounding ring has the beneficial technical effects that:

[0014] The grounding elastic sheet is formed by outwardly folding part of the side wall of the clamping piece, has simple structure, is easy to form and disassemble, has low production cost, has large contact area, can realize stable and reliable contact with the grounding clamp under the condition of meeting the tolerance limit, and guarantees effective grounding of the coaxial line. BRIEF DESCRIPTION OF DRAWINGS

[0015] The following description of the drawings is only some embodiments, and other drawings can be obtained according to the drawings without creative labor for those skilled in the art. In the drawings:

[0016] Figure 1 A working state schematic view of the elastic grounding ring provided by the embodiment of the utility model;

[0017] Figure 2 A sectional view of the elastic grounding ring provided by the embodiment of the utility model;

[0018] Figure 3 A connection relationship schematic view of the elastic grounding ring and the coaxial line provided by the embodiment of the utility model;

[0019] Figure 4 A first structure schematic view of the elastic grounding ring provided by the embodiment of the utility model;

[0020] Figure 5 A second structure schematic view of the elastic grounding ring provided by the embodiment of the utility model.

[0021] In the drawings, the component list represented by each sign is as follows:

[0022] 1-coaxial line, 101-outer conductor, 2-clamping piece, 3-ground spring piece, 301-supporting part, 302-bending part, 303-pressing part, 4-grounding slot. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0024] As shown in Figures 1 to 3 The embodiments of the present application provide an elastic grounding ring which is integrally bent and formed by a metal sheet, comprising a clamping piece 2 and a grounding spring piece 3. The clamping piece 2 is preferably made of stainless steel and is bent into a cylindrical shape, and is coaxially clamped and fixed on the outer conductor 101 of the coaxial line 1. The grounding spring piece 3 is pre-formed on the clamping piece 2. The grounding spring piece 3 is folded outward from part of the side wall of the clamping piece 2. The maximum width of the cross section of the elastic grounding ring is slightly larger than the inner distance of the grounding slot 4 on the metal shell of the electronic equipment, so that the grounding spring piece 3 can be in elastic abutment with the grounding slot 4, thereby realizing the grounding of the coaxial line 1.

[0025] As shown in Figure 4 and Figure 5 The grounding spring piece 3 can be folded outward from the side wall of the middle part of the clamping piece 2 and mirror-symmetrically formed on both sides of the clamping piece 2, or can be folded outward from the side wall of the two ends of the clamping piece 2 and mirror-symmetrically formed on both sides of the clamping piece 2, so as to increase the number of grounding contact points and the contact area. In addition, the mirror-symmetric design can also make the grounding spring piece 3 more evenly disperse the pressure when stressed, reduce stress concentration, improve connection reliability and structural stability.

[0026] In the embodiment, the grounding spring sheet 3 specifically comprises a supporting part 301, a bending part 302 and a pressing part 303, wherein the supporting part 301 is integrally connected with the clamping sheet 2 and is parallel to the inner side wall of the grounding slot 4; the bending part 302 is located at the end of the supporting part 301 and is bent to the outside of the clamping sheet 2; the pressing part 303 is connected with the bending part 302, and the contact surface of the pressing part 303 is a plane, which is used for directly pressing and contacting the inner side wall of the grounding slot 4 to ensure sufficient contact area. The bending angle of the pressing part 303 relative to the supporting part 301 is between 150° and 180°. When the elastic grounding ring is pressed into the grounding slot 4, the bending part 302 and the connecting part between the supporting part 301 and the main body of the clamping sheet 2 will elastically deform, so that the contact surface of the pressing part 303 can be more closely contacted with the inner side wall of the grounding slot 4 under the action of the elastic force.

[0027] In the embodiment, the grounding spring sheet specifically comprises a supporting part, a bending part and a pressing part, wherein the supporting part is integrally connected with the clamping sheet and is parallel to the inner side wall of the grounding slot; the bending part is located at the end of the supporting part and is bent to the outside of the clamping sheet; the pressing part is connected with the bending part, and the contact surface of the pressing part is a plane, which is used for directly pressing and contacting the inner side wall of the grounding slot to ensure sufficient contact area. The bending angle of the pressing part relative to the supporting part is between 150° and 180°. When the elastic grounding ring is pressed into the grounding slot, the bending part and the connecting part between the supporting part and the main body of the clamping sheet will elastically deform, so that the contact surface of the pressing part can be more closely contacted with the inner side wall of the grounding slot under the action of the elastic force.

[0028] The above embodiments only express the implementation of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the application patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A flexible grounding ring, characterized in that: It includes a clamping piece (2) formed by integrally bending a metal sheet and wrapping around the outer conductor (101) of the coaxial line (1). Part of the side wall of the clamping piece (2) is folded outward to form a grounding spring piece (3) that elastically abuts against the grounding slot (4).

2. The elastic grounding ring according to claim 1, characterized in that: The grounding spring (3) includes a support part (301) integrally connected with the clamping piece (2), a bending part (302) bent outward from the clamping piece (2), and a pressing part (303) connected to the bending part (302) for pressing against the inner wall of the grounding slot (4).

3. The elastic grounding ring according to claim 2, characterized in that: The support part (301) is parallel to the inner wall of the grounding slot (4), and the bending angle of the crimping part (303) relative to the support part (301) is between 150° and 180°.

4. The elastic grounding ring according to claim 3, characterized in that: The contact surface of the crimping part (303) is a plane.

5. The elastic grounding ring according to claim 1, characterized in that: There are at least two grounding springs (3), which are arranged in a mirror image symmetrically on both sides of the clamping piece (2).

6. A resilient grounding ring according to any one of claims 1-5, characterized in that: The clamping piece (2) is made of stainless steel.

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