A side wall contact SMA type RF connector

Abstract

The utility model discloses a kind of side wall contact type SMA radio frequency connectors, including SMA radio frequency connector shell, inner conductor is set in SMA radio frequency connector shell by insulator, first contact head is set in SMA radio frequency connector shell and located at the outer side of the one end of inner conductor, the connecting end of inner conductor and SMA radio frequency connector shell is provided with second contact head, side wall contact is formed between second contact head and inner conductor, the outer side of second contact head is connected with screw sleeve by snap ring, the utility model is provided with second contact head in the connecting end of inner conductor and SMA radio frequency connector shell, the end surface contact mode of SMA radio frequency connector is improved to side wall contact mode, form stable and reliable SMA radio frequency connector electrical performance, realize the good intermodulation performance of SMA radio frequency connector, and using screw sleeve installation is convenient and fast, and electrical performance is stable and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of radio frequency connector technology, specifically relating to a side-wall contact SMA type radio frequency connector. Background Technology

[0002] The SMA connector is an ultra-small coaxial cable connector, named after the Sub-Miniature A connector. It is mainly used to transmit radio frequency signals, with a transmission frequency range of up to 18GHz or higher. It features wide bandwidth, excellent performance, high reliability, and long lifespan.

[0003] like Figure 2 As shown, existing SMA type RF connectors rely on the end face of the RF connector shell for contact when the male and female ends are mated. This contact surface is very thin, which cannot achieve good intermodulation performance. Furthermore, the connection depends on the tightness of the nut. However, the torque of the connecting nut of the SMA type RF connector is very small, and it cannot be tightened too much, which makes it impossible to achieve stable intermodulation performance of the SMA type RF connector. Therefore, we propose a side-wall contact type SMA type RF connector. Utility Model Content

[0004] The purpose of this invention is to provide a side-wall contact SMA type RF connector to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sidewall contact SMA type RF connector, comprising an SMA type RF connector housing, an inner conductor disposed inside the SMA type RF connector housing via an insulator, and a first contact head disposed inside the SMA type RF connector housing located outside one end of the inner conductor;

[0006] The connection end between the inner conductor and the SMA type RF connector housing is provided with a second contact head, and a sidewall contact is formed between the second contact head and the inner conductor.

[0007] The outer side of the second contact head is connected to a threaded sleeve via a retaining ring.

[0008] Preferably, a connection step is provided inside the SMA type RF connector housing corresponding to the connection point of the second contact head, and a step groove is opened on the outer side of one end of the second contact head facing the SMA type RF connector housing. One end of the second contact head is disposed on the connection step of the SMA type RF connector housing through the step groove.

[0009] Preferably, a limiting groove is formed on the outer side of the inner conductor at the position corresponding to the second contact head, and the second contact head is disposed in the limiting groove on the inner conductor.

[0010] Preferably, the second contact head is a contact head made of an elastic metal component.

[0011] Preferably, a limiting ring groove adapted to the retaining ring is formed on the outer side of the second contact head and the inner side of the screw sleeve, and the retaining ring is locked in the limiting ring groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention provides a second contact head at the connection end between the inner conductor and the SMA type RF connector shell. The second contact head is made of elastic metal, which improves the existing end face contact method of the SMA type RF connector to the side wall contact method. The second contact head made of elastic metal forms the electrical contact of the SMA type RF connector, resulting in stable and reliable electrical performance of the SMA type RF connector. It achieves good intermodulation performance of the SMA type RF connector, no longer relying on the tightness of the connecting nut to achieve intermodulation performance. Moreover, the use of a screw sleeve makes installation convenient and quick, and the electrical performance is stable and reliable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the SMA type RF connector structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the existing SMA type RF connector.

[0016] In the diagram: 1. SMA type RF connector housing; 101. Connecting step; 2. Insulator; 3. Inner conductor; 301. Limiting slot; 4. First contact head; 5. Second contact head; 501. Step groove; 6. Snap ring; 7. Screw sleeve; 8. Limiting ring groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 The side-wall contact SMA type RF connector provided by this utility model includes an SMA type RF connector housing 1, an inner conductor 3 is provided inside the SMA type RF connector housing 1 through an insulator 2, and a first contact head 4 located outside one end of the inner conductor 3 is provided inside the SMA type RF connector housing 1.

[0019] The inner conductor 3 and the SMA type RF connector housing 1 are connected by a second contact head 5. The second contact head 5 and the inner conductor 3 form a sidewall contact. The SMA type RF connector housing 1 is provided with a connecting step 101 corresponding to the connection of the second contact head 5. The outer side of the end of the second contact head 5 facing the SMA type RF connector housing 1 is provided with a step groove 501. One end of the second contact head 5 is set on the connecting step 101 of the SMA type RF connector housing 1 through the step groove 501. The outer side of the inner conductor 3 is provided with a limiting slot 301 corresponding to the position of the second contact head 5. The second contact head 5 is set in the limiting slot 301 on the inner conductor 3. The second contact head 5 is a contact head made of an elastic metal part.

[0020] The outer side of the second contact head 5 is connected to the threaded sleeve 7 via a retaining ring 6. A limiting ring groove 8 adapted to the retaining ring 6 is provided on the outer side of the second contact head 5 and the inner side of the threaded sleeve 7. The retaining ring 6 is limited and engaged in the limiting ring groove 8.

[0021] This invention provides a second contact head 5 at the connection end between the inner conductor 3 and the SMA type RF connector housing 1. The second contact head 5 is a contact head made of elastic metal, which improves the existing end face contact method of the SMA type RF connector to a side wall contact method. The second contact head 5 made of elastic metal forms the electrical contact of the SMA type RF connector, forming a stable and reliable electrical performance of the SMA type RF connector, and realizing good intermodulation performance of the SMA type RF connector. It no longer depends on the tightness of the connecting nut to achieve intermodulation performance, and the use of a screw sleeve makes installation convenient and quick, and the electrical performance is stable and reliable.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A side-wall contact SMA type RF connector, characterized in that, Includes an SMA type RF connector housing (1), an inner conductor (3) is provided inside the SMA type RF connector housing (1) through an insulator (2), and a first contact head (4) is provided inside the MA type RF connector housing (1) located outside one end of the inner conductor (3). The inner conductor (3) and the SMA type RF connector housing (1) are provided with a second contact head (5), and a sidewall contact is formed between the second contact head (5) and the inner conductor (3); The outer side of the second contact head (5) is connected to a threaded sleeve (7) via a retaining ring (6).

2. The side-wall contact SMA type RF connector according to claim 1, characterized in that: The SMA type RF connector housing (1) has a connection step (101) provided at the connection point corresponding to the second contact head (5). The second contact head (5) has a step groove (501) on the outer side of one end facing the SMA type RF connector housing (1). One end of the second contact head (5) is set on the connection step (101) of the SMA type RF connector housing (1) through the step groove (501).

3. A sidewall contact SMA type RF connector according to claim 2, characterized in that: A limiting groove (301) is provided on the outer side of the inner conductor (3) at the position corresponding to the second contact head (5), and the second contact head (5) is disposed in the limiting groove (301) on the inner conductor (3).

4. A side-wall contact SMA type RF connector according to claim 3, characterized in that: The second contact head (5) is a contact head made of an elastic metal part.

5. A side-wall contact SMA type RF connector according to claim 1, characterized in that: The outer side of the second contact head (5) and the inner side of the screw sleeve (7) are provided with a limiting ring groove (8) that is adapted to the retaining ring (6), and the retaining ring (6) is limited and engaged in the limiting ring groove (8).

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