CN210167543U - Female first structure of SMA radio frequency coaxial connector - Google Patents

Abstract

The utility model discloses a female head structure of SMA radio frequency coaxial connector, which relates to the technical field of radio frequency coaxial connector, comprising a shell and a plug wire end, wherein an insulator is fixedly arranged in the inner cavity of the shell, a contact pin penetrates through the interior of the insulator, a fixing hole for installing the insulator is also arranged in the inner cavity of the shell, a plurality of first annular grooves are arranged on the side wall of the fixing hole, a first extending part corresponding to the first annular grooves is arranged on the outer surface of the insulator, a channel for the contact pin to pass through is arranged in the insulator, a second annular groove from inside to outside is arranged on the inner wall of the channel, a second extending part corresponding to the second annular groove is arranged on the outer surface of the contact pin, an annular default part extending inwards from the left side end of the shell is arranged in the shell, compared with the prior art, the contact pin and the insulating part can not move, and the stability of signal transmission is ensured, the material consumption is less, and the production cost of manufacturers is reduced.

Description

Female first structure of SMA radio frequency coaxial connector

Technical Field

The utility model relates to a radio frequency coaxial connector technical field, in particular to female first structure of SMA radio frequency coaxial connector.

Background

A radio frequency coaxial connector is generally considered to be a component attached to a cable or mounted on an instrument as a component to which a transmission line is electrically connected or separated. It belongs to a mechatronic product. In brief, it mainly acts as a bridge. SMA radio frequency coaxial connector is a radio frequency coaxial connector, its convenient to use, signal transmission's efficient, it includes public head and female head, female head internally mounted has insulator and contact pin, traditional insulator and contact pin are when public head inserts, axial float often can take place for insulator and contact pin, lead to insulator and contact pin skew original position, often lead to the unstable condition of signal transmission to take place, in addition, current female head consumptive material is more when the preparation, and is heavy, and is with high costs, can make the testing process good time consumption because of the reason of weight at the in-process of big preparation in batches.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a SMA radio frequency coaxial connector female head structure for solve the technical problem that above-mentioned background art exists.

The technical purpose of the utility model is realized by the following technical proposal that the female head structure of the SMA radio frequency coaxial connector comprises a shell with an inner cavity and a plug wire end fixedly connected with the shell, the inner cavity of the shell is fixedly provided with an insulator, the inner part of the insulator is penetrated with the plug wire, the two ends of the plug wire are respectively arranged in the inner cavity of the shell and the plug wire end, the inner cavity of the shell is provided with a fixed hole for installing the insulator, the side wall of the fixed hole is provided with a plurality of first annular grooves, the outer surface of the insulator is provided with a first extending part corresponding to the first annular grooves, the first extending part is arranged in the first annular grooves, the inner part of the insulator is provided with a channel for the plug wire to pass through, the inner wall of the channel is provided with a second annular groove from inside to outside, the outer surface of the plug wire is provided with a second extending part corresponding to the second annular groove, the second extending part is arranged in the second annular groove; an annular default part extending inwards from the left end of the shell is arranged in the shell.

Preferably, the number of the first annular grooves and the number of the second annular grooves are 4, and the first annular grooves and the second annular grooves are uniformly arranged on the side wall of the fixing hole and the inner wall of the channel.

Preferably, the one end that the contact pin is located the casing inner chamber is equipped with the needle groove, and the needle inslot portion is seted up flutedly, is provided with the movable block in the recess, is provided with the spring between movable block and the recess, the movable block surface is the slope form that inwards gradually becomes from the contact pin tip.

Preferably, the outer surface of the shell is further sleeved with a bushing, one end, far away from the plug wire end, of the bushing is in a horn shape, threaded holes are formed in the bushing and the shell, and the bushing is fixed on the surface of the shell through screws.

Preferably, the plug wire end is fixedly connected with the shell through a screw.

Preferably, the annular default is disposed between the insulator and the threaded bore.

The utility model has the advantages as follows: the utility model relates to a female first structure of SMA radio frequency coaxial connector, through be provided with the fixed orifices in the inner chamber of casing, first annular groove has been seted up to the lateral wall of fixed orifices, the surface of insulator is provided with first portion of stretching out, first portion of stretching out sets up in first annular groove, therefore the insulator inlays the dress in the fixed orifices, the insulator can not take place the axial float when receiving the horizontal force, be provided with second annular groove through the inside at the insulator in addition, be provided with the second portion of stretching out on the contact pin, therefore the contact pin inlays the dress with the insulator, make the contact pin can not the float when receiving the horizontal force simultaneously, the stability of signal transmission has been guaranteed, in addition, the setting of annular default makes the material of casing reduce, the manufacturing cost of producer has been reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic diagram of the internal structure of the pin.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1 and 2, the technical object of the present invention is achieved by a female head structure of an SMA radio frequency coaxial connector, comprising a housing 2 having an inner cavity 1 and a plug wire end 3 fixedly connected to the housing 2 by screws, wherein the inner cavity 1 of the housing 2 is fixedly provided with an insulator 4, the insulator 4 has a plug pin 5 penetrating through the interior thereof, two ends of the plug pin 5 are respectively disposed in the inner cavity 1 of the housing 2 and the plug wire end 3, the inner cavity 1 of the housing 2 is provided with a fixing hole 6 for mounting the insulator 4, the side wall of the fixing hole 6 is provided with a plurality of first annular grooves, the outer surface of the insulator 4 is provided with first protrusions 7 corresponding to the first annular grooves, the first protrusions 7 are disposed in the first annular grooves, the insulator 4 is internally provided with a channel 8 for the plug pin 5 to pass through, the inner wall of the channel 8 is provided with a second annular groove from the inside to the outside, the outer surface of the contact pin 5 is provided with a second protruding part 9 corresponding to the second annular groove, and the second protruding part 9 is arranged in the second annular groove; the inner part of the shell 2 is provided with an annular default part 10 which extends inwards from the left side end of the shell 2, the female head structure of the SMA radio frequency coaxial connector is characterized in that the inner cavity 1 of the shell 2 is provided with a fixed hole 6, the side wall of the fixed hole 6 is provided with a first annular groove, the outer surface of the insulator 4 is provided with a first extending part 7, the first extending part 7 is arranged in the first annular groove, so the insulator 4 is embedded in the fixed hole 6, the insulator 4 can not generate axial float when receiving horizontal force, in addition, the inner part of the insulator 4 is provided with a second annular groove, the contact pin 5 is provided with a second extending part 9, therefore, the contact pin 5 is embedded with the insulator 4, meanwhile, the contact pin 5 can not float when receiving horizontal force, the stability of signal transmission is ensured, in addition, the arrangement of the annular default part 10 can reduce the material used by the shell 2, the production cost of manufacturers is reduced.

The utility model discloses an equal preferred 4 of quantity of first annular groove and second annular groove, the even lateral wall of seting up at fixed orifices 6 and the inner wall of passageway 8.

Preferably, the one end that contact pin 5 is located 2 inner chambers 1 of casing is equipped with needle groove 11, and the inside recess 12 of having seted up in needle groove 11 is provided with movable block 13 in the recess 12, is provided with spring 14 between movable block 13 and the recess 12, movable block 13 surface is from the inside slope form that gradually becomes high of 5 tip of contact pin, and the setting of movable block 13 can make public head when inserting needle groove 11, and spring 14 and movable block 13 compress tightly public head, thereby prevent to lead to the condition emergence of signal transmission inefficacy because of contact failure between public head and the female head.

Preferably, the outer surface of the casing 2 is further sleeved with a bushing 15, one end, far away from the plug wire end 3, of the bushing 15 is in a horn shape, so that the male plug can be conveniently positioned when inserted, threaded holes 16 are formed in the bushing 15 and the casing 2, the bushing 15 is fixed on the surface of the casing 2 through screws, and the annular default part 10 is arranged between the insulator and the threaded holes 16 and can protect the outside of the casing 2 from being damaged through the arrangement of the bushing 15.

The above description specifically describes the preferred embodiment of the present invention, but of course, the present invention can also adopt different forms from the above embodiments, and equivalent changes or corresponding modifications made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims (6)

1. The utility model provides a female first structure of SMA radio frequency coaxial connector, including the casing that has the inner chamber and with casing fixed connection's plug wire end, the inner chamber of casing is fixed and is provided with the insulator, and the inside of insulator is run through there is the contact pin, the both ends of contact pin set up the inside at casing inner chamber and plug wire end respectively, its characterized in that: the inner cavity of the shell is provided with a fixing hole for mounting an insulator, the side wall of the fixing hole is provided with a plurality of first annular grooves, the outer surface of the insulator is provided with first extending parts corresponding to the first annular grooves, the first extending parts are arranged in the first annular grooves, a channel for a contact pin to pass through is formed in the insulator, the inner wall of the channel is provided with second annular grooves from inside to outside, the outer surface of the contact pin is provided with second extending parts corresponding to the second annular grooves, and the second extending parts are arranged in the second annular grooves; an annular default part extending inwards from the left end of the shell is arranged in the shell.

2. The female end structure of an SMA radio frequency coaxial connector of claim 1, wherein: the quantity of first annular groove and second annular groove is 4, and even the seting up is at the lateral wall of fixed orifices and the inner wall of passageway.

3. The female end structure of an SMA radio frequency coaxial connector of claim 2, wherein: the contact pin is located the one end of casing inner chamber and is equipped with the needle groove, and the needle inslot portion is seted up flutedly, is provided with the movable block in the recess, is provided with the spring between movable block and the recess, the movable block surface is the slope form that inwards gradually becomes from the contact pin tip.

4. The female end structure of an SMA radio frequency coaxial connector of claim 3, wherein: the outer surface of the shell is further sleeved with a bushing, one end, far away from the plug wire end, of the bushing is horn-shaped, threaded holes are formed in the bushing and the shell, and the bushing is fixed on the surface of the shell through screws.

5. The female end structure of an SMA radio frequency coaxial connector of claim 4, wherein: the plug wire end is fixedly connected with the shell through a screw.

6. The female end structure of an SMA radio frequency coaxial connector of claim 5, wherein: the annular default is disposed between the insulator and the threaded bore.

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