CN201126907Y - A radio frequency connector - Google Patents

Abstract

The utility model discloses a RF connector, specifically to a RF connector capable of being used for screening or sealing, comprising a screw rod and a stitch arranged on lower end of the screw rod, and a flange is provided on position where the screw rod and the stitch are connected. The RF connector of the utility model has advantages that the RF connector can not be pulled down or be loosened when assembling, because locating is realized by employing the flange, and reliability is improved, meanwhile, screening can be realized by the screening ring or sealing ring provided between the cover plate and the flange, thereby ensuring sealing and screening in a better way.

Description

A radio frequency connector

technical field

The invention relates to a radio frequency connector, in particular to a radio frequency connector which can be used for shielding or sealing.

Background technique

In the communication and related fields, the external signal of the radio frequency module is realized by the radio frequency connector. The upper part of the RF connector is a screw, and the lower part has pins. As shown in Figure 1 and Figure 2, the RF connector 2 is welded on the PCB (printed circuit board, printed circuit board) 1 through the pin 7, and the screw rod 3 of the RF connector 2 passes through the hole on the cover plate 6, and then passes through the A washer 5 and a nut 4 are fixed. The gasket 5 and the nut 4 are used simultaneously for shielding and sealing. The problem with this kind of RF connector is that the shielding and sealing effects are not good; and, during installation, when the nut is tightened, it is easy to pull off the RF connector that has been soldered on the PCB from the PCB or cause loosening, resulting in connection Unreliable. With the continuous development of communication technology and related fields, the requirements for external outlets are diversified, and the requirements for shielding and sealing are getting higher and higher. The existing RF connectors can no longer meet the current needs.

Contents of the invention

The technical problem to be solved by the present invention is to provide a radio frequency connector, which can achieve good shielding and sealing, and will not fall off from the PCB during installation.

In order to solve the above problems, the present invention provides a radio frequency connector, which includes a screw and pins arranged at the lower end thereof, and a flange is provided at the position where the screw is connected to the pins.

Further, the flange is circular, square or polygonal.

Further, the part of the screw rod close to the flange is not provided with threads, and the outer diameter of this part is greater than or equal to the major diameter of the threaded part of the screw rod.

Further, a step is provided on the pin.

Further, the pins are welded on the printed circuit board, the screw rod passes through a hole on a cover plate, and a shielding ring or a sealing ring is provided on the outside of the screw rod between the cover plate and the flange.

Further, the inner diameter of the shielding ring or sealing ring is smaller than or equal to the outer diameter of the screw.

Further, a groove is provided around the hole of the cover plate, and one end of the shielding ring or sealing ring is located in the groove.

Further, the groove is a tapered groove.

The radio frequency connector of the utility model adopts the flange to realize positioning, thereby ensuring that the radio frequency connector will not be pulled off from the PCB or loosen during installation, thereby improving reliability. At the same time, the shielding can be realized by the shielding ring or sealing ring between the cover plate and the flange, which better ensures the sealing and shielding.

Description of drawings

Fig. 1 is the connection structural diagram of the radio frequency connector of prior art;

Fig. 2 is the front view of the radio frequency connector of prior art;

Fig. 3 is the front view of an embodiment of the radio frequency connector of the present invention;

Fig. 4 is a top view of the embodiment shown in Fig. 3;

Fig. 5 is a connection structure diagram of the radio frequency connector of the present invention.

Detailed ways

The radio frequency connector of the utility model adds a flange with a certain thickness on the basis of the existing standard connector, and realizes the shielding and sealing of the module by adding a shielding or sealing ring.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

As shown in Figure 3 and Figure 4, in this embodiment, the upper part of the RF connector 2 is a screw 3, the lower end of the screw 3 is connected with a pin 7, and a flange 8 is provided at the position where the screw 3 and the pin 7 are connected, and the flange 8 can be It is a square, a circle or other polygons; the flange 8 should have a certain thickness and strength. A step 12 is provided on the pin 7; the part of the screw rod 3 close to the flange 8 has no thread and no undercut, and the outer diameter of this part is preferably equal to or greater than the major diameter of the threaded part.

As shown in Figure 5, during installation, at first, the radio frequency connector 2 of the present utility model is welded on the circuit board 1 through the pin 7, and the step 12 on the pin 7 can ensure that there is a certain distance between the flange 8 and the circuit board 1; then , put the screw 3 of the RF connector 2 through the hole on the cover 6, control the distance between the cover and the circuit board 1 through the structure of the cover, and ensure a certain distance between the flange 8 and the cover 6.

In order to ensure better shielding and sealing, a shielding ring or sealing ring 10 can be arranged outside the screw rod 3 between the cover plate 6 and the flange 8 , and the inner diameter of the shielding ring or sealing ring 10 is approximately equal to the outer diameter of the screw rod 3 . The part of the screw 3 close to the flange 8 has no thread and no undercut, and the outer diameter of this part should be equal to or greater than the major diameter of the threaded part, in order to ensure that the screw 3 is closer to the shielding ring or sealing ring 10 The combination to ensure the shielding and sealing effect.

A groove 11 can be provided around the hole on the cover plate 6, and the groove 11 is preferably a tapered groove. During installation, the end of the shielding ring or sealing ring 10 close to the cover plate 6 is located in the groove 11 to play a positioning role. If the groove 11 is a tapered groove, when the cover plate 6 and the circuit board 1 are fixed tightly through the relevant structure, the slope of the tapered groove will give the shielding ring or sealing ring 10 a pressure pointing to its axis at the same time, so that the shielding ring or sealing ring 10 is compressed and tightly pressed on the screw rod 3 and the flange 8, further improving shielding and sealing.

Claims (8)

1, a kind of radio frequency connector comprises screw rod and the stitch that is arranged on its lower end, it is characterized in that the position that described screw rod is connected with stitch is provided with a flange.

2, radio frequency connector as claimed in claim 1 is characterized in that, described flange is circle, square or polygon.

3, radio frequency connector as claimed in claim 1 is characterized in that, the part near described flange on the described screw rod is not established screw thread, and the external diameter of this part is more than or equal to the Major Diam that threaded portion is arranged on the screw rod.

4, radio frequency connector as claimed in claim 1 is characterized in that, described stitch is provided with a step.

5, radio frequency connector as claimed in claim 1 is characterized in that, described stitch is welded on the printed circuit board (PCB), and described screw rod passes the hole on the cover plate, and the screw rod outside between described cover plate and the flange is provided with shielding ring or sealing ring.

6, radio frequency connector as claimed in claim 5 is characterized in that, the internal diameter of described shielding ring or sealing ring is less than or equal to the external diameter of described screw rod.

As claim 5 or 6 described radio frequency connectors, it is characterized in that 7, be provided with a groove around the hole of described cover plate, an end of described shielding ring or sealing ring is positioned at this groove.

8, radio frequency connector as claimed in claim 7 is characterized in that, described groove is a cone tank.

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