Shielding layer welding-free type connector structure

Abstract

The utility model discloses a shielding layer welding-free type connector structure, which comprises a connecting nut, a connector shell and a cable tail pipe which are sequentially and coaxially arranged along the axis direction of a connector, and a clamping ring limiting structure is arranged at the butt joint position of the connecting nut and the connector shell. The end, away from the connecting nut, of the connector shell is in threaded connection with a cable tail pipe, a locking tail sleeve used for being connected with a shielding layer on the outer surface of a cable is arranged in the cable tail pipe, and a locking mechanism used for enabling the locking tail sleeve to be tightly attached to the shielding layer of the cable is arranged at the position of the locking tail sleeve. The connector and the cable shielding layer are fixed through the locking tail sleeve, compared with a traditional connector needing to be welded with the shielding layer, complex welding operation is not needed, installation personnel can directly conduct insertion connection or conduct connection through a simple tool, the installation time is greatly shortened, and meanwhile the installation efficiency is improved. And the possible safety risks such as scalding and fire disasters in the welding process are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency connectors, in particular to a shielding layer welding-free connector structure. Background Art

[0002] Traditional connectors require welding shielding layers, and welding operations require certain professional skills and experience. Connection problems are easily caused by poor welding. At the same time, in some application environments with large vibration and shock, such as transportation, industrial automation and other fields, welded connections may cause problems such as solder joint cracking under long-term vibration and shock, affecting the reliability of the connection. Utility Model Content

[0003] Technical purpose: In view of the shortcomings of existing radio frequency connectors with welded shielding layers, the utility model discloses a shielding layer weld-free connector structure.

[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solutions:

[0005] A shielded layer solder-free connector structure includes a connecting nut, a connector housing, and a cable tail tube coaxially arranged in sequence along the connector axis. A snap ring limiting structure is provided at the butt joint between the connecting nut and the connector housing. An end of the connector housing facing away from the connecting nut is threadedly connected to the cable tail tube. A locking tail sleeve for connecting to the shielding layer on the outer surface of the cable is provided in the cable tail tube. A locking mechanism is provided at the locking tail sleeve for tightly fitting the locking tail sleeve to the shielding layer of the cable.

[0006] Preferably, the locking tail sleeve of the present invention is provided with a plurality of through grooves along the circumferential direction at one end close to the cable tail tube, and the locking tail sleeve is divided into a petal-shaped structure by the through grooves. The cable tail tube is provided with a tapered hole with a gradually decreasing diameter at the matching position with the end of the locking tail sleeve. When the cable tail tube is connected to the connector housing, the locking tail sleeve is driven by the locking mechanism to move in the direction of the tapered hole, so that the end of the locking tail sleeve shrinks and abuts against the shielding layer of the cable.

[0007] Preferably, the locking mechanism of the present invention includes a tail sleeve, which is arranged between the cable tail tube and the connector housing. A limiting step that cooperates with the end face of the tail sleeve is provided in the connector housing. One end of the tail sleeve abuts against the limiting step and keeps a fixed position relative to the connector housing, and the other end contacts the locking tail sleeve. When the cable tail tube is connected to the connector housing, the locking tail sleeve is pushed to move by the tail sleeve to lock and fix the cable shielding layer.

[0008] Preferably, the end of the locking sleeve of the present invention is provided with a tapered chamfer that matches the tapered hole.

[0009] Preferably, the clamping ring limiting structure of the present invention includes a clamping ring and an annular clamping groove arranged on the adjacent surfaces of the connecting nut and the connector housing; the clamping ring adopts an open structure, and the diameter of the clamping ring can be changed according to the installation space requirements before and after assembly through the open structure.

[0010] Preferably, an inner conductor is coaxially arranged in the connector housing of the present invention, and the inner conductor and the inner hole of the connector housing are supported and positioned by an insulating medium.

[0011] Beneficial effects: The shielding layer solder-free connector structure disclosed in the present invention has the following beneficial effects:

[0012] 1. This utility model fixes the connector and the cable shielding layer by locking the tail sleeve. Compared with traditional connectors that require welding the shielding layer, there is no need for complicated welding operations. Installers can directly plug in or use simple tools to connect, which greatly shortens the installation time. At the same time, it avoids safety risks such as burns and fire that may occur during the welding process.

[0013] 2. The utility model pushes the locking tail sleeve end portion along the tapered hole through the abutment of the tail sleeve to gradually come into close contact with the shielding layer of the cable for locking and fixing. When the connector is assembled, the connection between the connector and the cable is completed synchronously, which is easy to operate.

[0014] 3. The utility model uses a mechanical structure for limiting, which can provide a stable and reliable electrical connection. In some application environments with large vibration and impact, such as transportation, industrial automation and other fields, the welding-free connector can resist vibration and impact and maintain the stability of the connection through its firm mechanical connection and reasonable structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0016] Figure 1 This is the overall structure diagram of the radio frequency connector of the utility model;

[0017] Figure 2 This is the structural diagram of the locking tail sleeve of the utility model;

[0018] Among them, 1-connecting nut, 2-connector housing, 3-cable tail tube, 4-locking tail sleeve, 5-tapered hole, 6-tail sleeve, 7-limiting step, 8-clamping ring, 9-annular groove, 10-inner conductor, 11-insulating medium, 12-through groove. DETAILED DESCRIPTION

[0019] Reference will now be made in detail to the embodiments of the present disclosure, one or more examples of which are set forth herein below. Each embodiment and example is provided by way of explanation of the apparatus, composition and materials of the present disclosure, and not by way of limitation. On the contrary, the following description provides a convenient illustration of exemplary embodiments for implementing the present disclosure. In fact, it will be clear to those skilled in the art that various modifications and variations can be made in the teachings of the present disclosure without departing from the scope or spirit of the present disclosure. For example, a feature shown or described as part of one embodiment may be used in conjunction with another embodiment to produce yet another embodiment. It is expected that the present disclosure covers such modifications and variations that fall within the scope of the appended claims and their equivalents. Other objects, features and aspects of the present disclosure are disclosed in or apparent from the following detailed description. It will be understood by those of ordinary skill in the art that this discussion is merely a description of exemplary embodiments and is not intended to limit the broader aspects of the present disclosure.

[0020] like Figure 1 and Figure 2 As shown, the utility model discloses a shielded layer solder-free connector structure, including a connecting nut 1, a connector shell 2 and a cable tail tube 3 which are coaxially arranged in sequence along the axis direction of the connector. A snap ring limiting structure is provided at the butt joint of the connecting nut 1 and the connector shell 2. The end of the connector shell 2 facing away from the connecting nut 1 is threadedly connected to the cable tail tube 3. A locking tail sleeve 4 for connecting to the shielding layer on the outer surface of the cable is provided in the cable tail tube 3. A locking mechanism is provided at the locking tail sleeve 4 for making the locking tail sleeve 4 fit tightly with the shielding layer of the cable.

[0021] The locking sleeve 4 of the present invention is provided with a plurality of through grooves 12 along the circumferential direction at one end close to the cable tail tube 3. The through grooves 12 divide the locking sleeve 4 into a petal-shaped structure. The cable tail tube 3 is provided with a tapered hole 5 with a gradually decreasing diameter at the matching position with the end of the locking sleeve 4. When the cable tail tube 3 is connected to the connector housing 2, the locking sleeve 4 is driven by the locking mechanism to move in the direction of the tapered hole, so that the end of the locking sleeve 4 contracts and abuts against the shielding layer of the cable. In order to improve the fixing effect, an internal thread can be provided on the surface of the locking sleeve 4 in contact with the cable shielding layer to increase the axial fixing force, ensure the stability of the RF connector connection, and improve the connection reliability.

[0022] The locking of the locking sleeve 4 and the shielding layer of the cable needs to rely on the thrust applied axially to drive it to move in the tapered hole. In order to simplify the locking operation steps and improve efficiency, the locking mechanism of the utility model includes a sleeve 6, which is arranged between the cable tail tube 3 and the connector housing 2, and a limiting step 7 that cooperates with the end face of the sleeve 6 is provided in the connector housing 2. One end of the sleeve 6 abuts on the limiting step 7 and remains fixed relative to the connector housing, and the other end contacts the locking sleeve 4. When the cable tail tube 3 is connected to the connector housing 2, the locking sleeve 4 is pushed to move by the sleeve 4 to lock and fix the cable shielding layer; due to the presence of the limiting step 7, the fixation of the connector cable can be completed at the same time as the RF connector is assembled, thereby improving assembly efficiency; as a preference, in order to reduce the resistance to pushing the locking sleeve 4, the locking sleeve 4 of the utility model is clearance-matched with the cable tail tube 3, and the end of the locking sleeve 4 is provided with a tapered chamfer that cooperates with the tapered hole 5.

[0023] The clamping ring limiting structure of the present invention includes a clamping ring 8 and an annular clamping groove 9 arranged on the adjacent surfaces of the connecting nut and the connector housing; the clamping ring 8 adopts an open structure, and the opening structure allows the diameter of the clamping ring 8 to be changed according to the installation space requirements before and after assembly; the inner conductor 10 is coaxially arranged in the connector housing 2, and the inner conductor 10 and the inner hole of the connector housing 2 are supported and positioned by an insulating medium 11; the diameter of the insulating medium 11 and the diameter of the inner conductor 10 are designed to match the typical impedance of 50ohm, and the material of the insulating medium 11 is designed to be PTFE, a material with a low dielectric constant.

[0024] When the RF connector of the present invention is assembled and used, the cable is passed through the cable tail tube 3 and connected to the inner conductor 11. The connecting nut 1 and the connector housing 2 are clamped in the provided annular groove 9 through the clamping ring 8 to limit the axial connection. Then the cable tail tube 3 is spirally connected to the connector housing 2. During the connection process, the connector housing 2 applies a thrust to the locking tail sleeve 4 through the tail sleeve 6, driving the end of the locking tail sleeve 4 to move in the tapered hole 5. Under the action of the tapered hole 5, the petal-shaped structure of the locking tail sleeve 4 contracts inward, and the diameter is reduced until it abuts against the shielding layer of the cable, completing the locking and fixation of the cable and the RF connector. In addition, a sealing ring can be provided between the end faces of the connector housing 2 and the cable tail sleeve 3 for sealing to improve the sealing performance of the connector.

Claims

1. A shielding layer solder-free connector structure, characterized in that: The invention comprises a connecting nut (1), a connector housing (2) and a cable tail tube (3) which are coaxially arranged in sequence along the axis direction of the connector; a snap ring limiting structure is provided at the joint between the connecting nut (1) and the connector housing (2); an end of the connector housing (2) facing away from the connecting nut (1) is threadedly connected to the cable tail tube (3); a locking tail sleeve (4) for connecting to the shielding layer on the outer surface of the cable is provided in the cable tail tube (3); and a locking mechanism for making the locking tail sleeve (4) and the shielding layer of the cable fit tightly is provided at the locking tail sleeve (4).

2. The shielding layer solder-free connector structure according to claim 1, characterized in that: The locking tail sleeve (4) is provided with a plurality of through grooves (12) along the circumferential direction at one end close to the cable tail tube (3), and the locking tail sleeve (4) is divided into a petal-shaped structure by the through grooves (12). The cable tail tube (3) is provided with a tapered hole (5) with a gradually decreasing diameter at the matching position with the end of the locking tail sleeve (4). When the cable tail tube (3) is connected to the connector housing (2), the locking tail sleeve (4) is driven by the locking mechanism to move in the direction of the tapered hole, so that the end of the locking tail sleeve (4) shrinks and contacts the shielding layer of the cable.

3. The shielding layer solder-free connector structure according to claim 2, characterized in that: The locking mechanism comprises a tail sleeve (6), the tail sleeve (6) being arranged between the cable tail tube (3) and the connector housing (2), a limiting step (7) being arranged in the connector housing (2) and matching with the end face of the tail sleeve (6), one end of the tail sleeve (6) being in contact with the limiting step (7) and being kept fixed relative to the connector housing, and the other end being in contact with the locking tail sleeve (4), and when the cable tail tube (3) is connected to the connector housing (2), the locking tail sleeve (4) is pushed by the tail sleeve (6) to move so as to lock and fix the cable shielding layer.

4. The shielding layer solder-free connector structure according to claim 2, characterized in that: The end of the locking tail sleeve (4) is provided with a tapered chamfer that matches the tapered hole (5).

5. The shielding layer solder-free connector structure according to claim 1, characterized in that: The snap ring limiting structure comprises a snap ring (8) and an annular snap groove (9) provided on adjacent surfaces of the connecting nut and the connector housing; the snap ring (8) adopts an open structure, and the diameter of the snap ring (8) can be changed according to installation space requirements before and after assembly through the open structure.

6. The shielding layer solder-free connector structure according to claim 1, characterized in that: An inner conductor (10) is coaxially arranged in the connector housing (2), and the inner conductor (10) and the inner hole of the connector housing (2) are supported and positioned by an insulating medium (11).

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