Shielding contact structure of SMB connector

Abstract

The shielding contact structure of the SMB connector comprises a shell, an insulator, a central terminal, a contact piece and a sealing ring, the contact piece is arranged in the shell, the central terminal is arranged in the insulator, the front ends of the insulator and the central terminal are inserted into the contact piece, the rear ends of the insulator and the central terminal are clamped in the shell, and the sealing ring is arranged in the shell. A plurality of elastic pieces extending inwards are arranged at the rear end of the contact piece in an annular array mode, the ends of the elastic pieces are bent outwards to form limiting blocks, and the sealing ring is arranged in a groove in the front side of the shell. According to the shielding contact structure, the elastic sheets are annularly arrayed at the rear end of the contact piece, and the end parts of the elastic sheets are bent outwards to form the limiting blocks, so that the insulator and the central terminal are prevented from falling off easily; the elastic sheet is elastic, the pulling and inserting force can be conveniently controlled and buffered during pulling and inserting, the service life of the contact element is prevented from being influenced, further, the contact element is adopted to replace an existing crown spring and a die casting process, the production cost and the use cost of the connector can be reduced, and meanwhile, the good contact performance of the connector can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of connector accessories, especially relates to a shielding contact structure of SMB connector. BACKGROUND

[0002] SMB connector is a kind of widely used small-sized threaded coaxial connector, it has the characteristics of wide frequency band, high performance, high reliability and long service life.SMB connector is suitable for the application in the microwave field with frequency range up to 26.5GHz.Application range such as telecommunications, network, wireless communication and detection and measuring instrument.

[0003] At present, crown spring is used as contact structure in SMB connector, and crown spring is widely used in the matching connection of male pin and female pin of electric connector, to reduce the machining precision requirement of male pin and female pin, avoid the phenomenon that male pin and female pin are not fixed firmly or difficult to plug in or plug out due to matching transition or too tight matching connection by tolerance matching connection.

[0004] The connector with existing contact crown spring is connected by the process mode of die casting processing plus machining when in use, resulting in low production efficiency, high cost and poor contact property.Therefore, a new type of shielding contact structure of SMB connector is urgently needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a shielding contact structure of SMB connector to solve the technical problems of high production cost and poor contact property of existing contact.

[0006] The shielding contact structure of SMB connector of the utility model, the SMB connector includes shell, insulator and center terminal and contact piece, the contact piece is arranged in the inside of shell, the center terminal is arranged in the inside of insulator, the front end of insulator and center terminal is inserted into contact piece, and the rear end is clamped in shell, the rear end annular array of contact piece has multiple inwardly extending spring sheets, the end of spring sheet is outwardly bent to form limit block, and the sealing ring is arranged in the recess on the front side of shell.

[0007] Preferably, the contact piece is a stepped columnar structure, hollow inside and coaxial with the insulator and the center terminal.

[0008] Preferably, the inner wall surface of the shell is provided with a clamping groove adapted to the insulator.

[0009] Preferably, the contact piece is made by one-piece stamping process.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The shielding contact structure of the SMB connector mainly comprises a shell, an insulator, a center terminal, a contact piece and a sealing ring, the contact piece is arranged at the front end of the shell, the insulator and the center terminal are clamped, and it is ensured that the insulator and the center terminal are not easily separated; the rear end annular array of the contact piece has a plurality of inwardly extending elastic sheets, the end of the elastic sheet is outwardly bent to form a limiting block, it is ensured that the insulator and the center terminal are not easily separated, the elastic sheet is elastic, the elastic sheet is convenient for controlling the buffer plug-in force when the plug-in is performed, the service life of the contact piece is avoided from being affected, further, by adopting the contact piece instead of the existing crown spring and the die casting process, it is ensured that the production cost and the use cost of the connector can be reduced, meanwhile, it is also ensured that the connector has good contact performance. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model is further illustrated below in combination with the drawings and embodiments:

[0013] Figure 1 is the split structure schematic diagram of an embodiment of the shielding contact structure of the SMB connector of the utility model;

[0014] Figure 2 is the front view structure schematic diagram of an embodiment of the shielding contact structure of the SMB connector of the utility model;

[0015] Figure 3 is Figure 2 the cross section structure schematic diagram of A-A in it;

[0016] Figure 4 is the structure schematic diagram of the contact piece of an embodiment of the shielding contact structure of the SMB connector of the utility model.

[0017] In the drawing: 1, shell, 11, recess; 2, insulator; 3, center terminal; 4, contact piece; 41, elastic sheet; 42, limiting block; 5, sealing ring. DETAILED DESCRIPTION

[0018] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0019] As Figures 1-4As shown, the shielding contact structure of the SMB connector comprises a shell 1, an insulator 2, a center terminal 3, a contact piece 4 and a sealing ring 5, the contact piece 4 is arranged in the interior of the shell 1, the center terminal 3 is arranged in the interior of the insulator 2, the front end of the insulator 2 and the center terminal 3 is inserted into the contact piece 4, the rear end is clamped in the shell 1, the rear end of the contact piece 4 is annular array and has a plurality of inwardly extending elastic sheets 41, the end of the elastic sheet 41 is outwardly bent to form a limiting block 42, and the sealing ring 5 is arranged in the groove 11 on the front side of the shell 1.

[0020] The shielding contact structure of the SMB connector mainly comprises a shell 1, an insulator 2, a center terminal 3, a contact piece 4 and a sealing ring 5, the shell 1 is a shielding shell, the insulator 2, the center terminal 3 and the contact piece 4 are all arranged in the shell 1, during installation, the center terminal 3 is clamped in the insulator 2, the insulator 2 is clamped in the shell 1, the contact piece 4 is arranged at the front end of the shell 1, the insulator 2 and the center terminal 3 are clamped, so that the insulator 2 and the center terminal 3 are prevented from falling off, wherein the rear end of the contact piece 4 is annular array and has a plurality of inwardly extending elastic sheets 41, preferably, the elastic sheet 41 is provided with four, the end of the elastic sheet 41 is outwardly bent to form a limiting block 42, so that the insulator 2 and the center terminal 3 are prevented from falling off easily, the elastic sheet 41 has elasticity, which facilitates the control of the buffer plug-in force during plug-in, avoids affecting the service life of the contact piece 4, further, by adopting the contact piece 4 to replace the existing crown spring and die casting process, the production cost and use cost of the connector can be reduced, and the good contact performance of the connector can also be ensured.

[0021] In a preferred embodiment, referring to Figures 1-4 The contact piece 4 of the stamping shielding structure of the SMB connector is a stepped columnar structure, which is hollow and coaxial with the insulator 2 and the center terminal 3. The inner wall surface of the shell 1 is provided with a clamping groove 11 adapted to the insulator 2. The contact piece 4 is made of an integral stamping process.

[0022] Specifically, the contact piece 4 is coaxial with the insulator 2 and the center terminal 3, which limits the position of the insulator 2 and prevents the insulator 2 and the center terminal 3 from falling off easily during installation; by arranging the clamping groove 11 adapted to the insulator on the inner wall surface of the shell 1, the insulator 2 is prevented from falling off after being installed in the shell 1, and the installation position of the insulator 2 is limited; the contact piece 4 is made of an integral stamping process, which replaces the existing crown spring and reduces the production cost.

[0023] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. Shielding contact structure of an SMB connector, characterized in that: The SMB connector comprises a shell, an insulator, a center terminal, a contact and a sealing ring, the contact is arranged inside the shell, the center terminal is arranged inside the insulator, the front ends of the insulator and the center terminal are inserted into the contact, and the rear ends are clamped in the shell, the rear end of the contact is annularly arranged, a plurality of elastic sheets extend inward, the end of the elastic sheet is outwardly bent to form a limiting block, and the sealing ring is arranged in the groove on the front side of the shell.

2. The shield contact structure of an SMB connector as recited in claim 1, wherein, The contact is a stepped columnar structure, which is hollow and coaxial with the insulator and the center terminal.

3. The shield contact structure of the SMB connector according to claim 1, wherein, The inner wall surface of the shell is provided with a clamping groove matched with the insulator.

4. The shield contact structure of the SMB connector according to claim 1, wherein, The contact is made by an integrated stamping process.

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