Sealed radio frequency connector

Abstract

The utility model discloses a sealed radio frequency connector, which comprises an inner conductor, an inner insulator, an outer conductor and a sheath which are sequentially arranged from inside to outside, and the inner conductor comprises a first inner conductor and a second inner conductor. The inner insulator and the outer conductor are correspondingly provided with a first window and a second window which enable the joint of the first inner conductor and the second inner conductor to be exposed, and the second window is connected with a cover plate in a buckling mode. The outer side of the pressing seat is surrounded by the first sealing ring which is in extrusion contact with the inner wall of the outer conductor, so that a window which is arranged on the bent radio frequency connector and enables a 90-degree connection part to be exposed can be effectively sealed, and the pressing seat and the first sealing ring are arranged in an embedded manner, so that the sealing performance is improved on the premise of having relatively good sealing performance, and the service life of the bent radio frequency connector is prolonged. The bending type radio frequency connector has the advantages of being good in practicability and application prospect, and the size of the bending type radio frequency connector is not greatly influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a sealed radio frequency connector. Background Art

[0002] The FAKRA connector is a radio frequency connector and a fully shielded connector, which directly affects the integrity and efficiency of signal transmission. It is widely used in the automotive industry, such as cameras, broadcast antennas, GPS, infotainment systems, navigation and driver assistance systems, and has become a standard data connector commonly used in the industry. Generally, FAKRA connectors are divided into straight and curved types in terms of structure. The 90-degree connection of the curved connector component is generally connected by welding, which is more expensive and has a longer welding cycle. It is impossible to achieve automated continuous production, resulting in low production efficiency and high costs. In addition, in order to facilitate welding, a window will be opened on the FAKRA connector to expose the 90-degree connection, and a cover plate will be snapped on the window. However, since the curved connector pursues the purpose of small size, a more complex seal is generally not set at the cover plate, resulting in poor sealing effect of the curved connector. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a sealed radio frequency connector to solve the technical problems mentioned in the background technology.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a sealed RF connector, which is connected to a mating connector, including an inner conductor, an inner insulator, an outer conductor and a sheath arranged in sequence from the inside to the outside, the sheath is arranged around the outside of at least part of the outer conductor, the inner conductor includes a first inner conductor and a second inner conductor, the first inner conductor and the second inner conductor are arranged to intersect and be conductively connected, the inner insulator and the outer conductor are correspondingly provided with a first window and a second window to expose the connection between the first inner conductor and the second inner conductor, a cover plate is buckled and connected at the second window, a pressure seat that is attached to the inner insulator is extended from one end of the cover plate facing the inner conductor, and a first sealing ring that is in compression contact with the inner wall of the outer conductor is arranged around the outer side of the pressure seat.

[0005] In some embodiments, the first inner conductor and the second inner conductor are arranged perpendicular to each other.

[0006] In some embodiments, the inner insulator includes a horizontal section and a vertical section, the first window is opened at one end of the horizontal section facing the cover plate, and the pressure seat is at least attached to the first window.

[0007] In some embodiments, a pressing plate arranged parallel to the cover plate is formed at one end of the pressing seat away from the cover plate, and an annular groove for accommodating the first sealing ring is formed between the pressing plate and the cover plate.

[0008] In some embodiments, a first step structure for positioning a pressure plate, a second step structure for positioning a first sealing ring, and a third step structure for positioning a cover plate are provided on the inner wall of the outer conductor, and the first step structure, the second step structure, and the third step structure are multi-step structures that gradually expand radially outward along the first inner conductor.

[0009] In some embodiments, the vertical section is cylindrical, and a positioning plate is correspondingly formed on the pressure plate, and the positioning plate has an arc-shaped groove matching the shape of the vertical section.

[0010] In some embodiments, a cable assembly is connected to one end of the second inner conductor away from the first inner conductor, and the outer conductor has a sleeve section that allows the free end of the cable assembly to extend out. After the free end of the cable assembly extends out of the outer conductor, it is connected to the outer conductor via a crimping piece, and a heat shrink tube is commonly provided on the outer side of the sleeve section, the crimping piece, and part of the cable assembly.

[0011] In some embodiments, at least one groove recessed inwardly is circumferentially arranged on the outer peripheral wall of the sleeve segment.

[0012] In some embodiments, at least one sealing groove is circumferentially provided on an outer peripheral wall of one end of the outer conductor facing the mating connector, and a second sealing ring is embedded in the sealing groove.

[0013] In some embodiments, a spring terminal that matches the mating connector is embedded on the inner side of the outer conductor, and a locking ring is provided on the side of the spring terminal that faces the mating connector.

[0014] In some embodiments, the locking ring and the outer conductor are assembled by using a riveting process.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model has a pressure seat extending from one end of the cover plate of the curved RF connector facing the inner conductor and fitted to the inner insulator, and a first sealing ring is arranged around the outer side of the pressure seat to be in compression contact with the inner wall of the outer conductor, thereby achieving effective sealing of the window opened on the curved RF connector to expose the 90-degree connection, and the embedded arrangement of the pressure seat and the first sealing ring, while having good sealing performance, will not have a significant impact on the volume of the curved RF connector, and has good practicality and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0017] Figure 1 This is a schematic diagram of the structure of the sealed radio frequency connector provided by the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the inner conductor in the RF connector shown;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the outer conductor in the RF connector shown;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of the cover plate in the RF connector shown;

[0021] Figure 5 for Figure 1 Schematic diagram of the mating of the RF connector and the mating connector shown.

[0022] The following are marked in the figure:

[0023] 1. RF connector; 2. Mating connector;

[0024] 10. inner conductor; 101. first inner conductor; 102. second inner conductor;

[0025] 20, inner insulator; 201, first window; 202, horizontal section; 203, vertical section;

[0026] 30, outer conductor; 301, second window; 302, first step structure; 303, second step structure; 304, third step structure; 305, sleeve section; 306, groove; 307, sealing groove; 308, second sealing ring; 309, spring terminal; 310, locking ring;

[0027] 40. Sheath;

[0028] 50, cover plate; 501, pressure seat; 502, first sealing ring; 503, pressure plate; 504, annular groove; 505, positioning plate; 506, arc groove;

[0029] 60. Cable assembly;

[0030] 70. Crimping piece;

[0031] 80. Heat shrink tubing. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0035] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0036] A sealed radio frequency connector, the radio frequency connector 1 is connected with a mating connector 2, such as Figure 1-Figure 4 As shown, it includes an inner conductor 10, an inner insulator 20, an outer conductor 30 and a sheath 40 arranged in sequence from the inside to the outside. The sheath 40 is arranged around at least a portion of the outer side of the outer conductor 30. The inner conductor 10 includes a first inner conductor 101 and a second inner conductor 102. The first inner conductor 101 and the second inner conductor 102 are arranged to intersect and are conductively connected. For a 90-degree FAKRA connector, the first inner conductor 101 and the second inner conductor 102 are arranged vertically, and the two are connected by welding or plugging. The plugging connection is preferably used to facilitate automatic assembly. For details, please refer to Figure 2 In order to facilitate welding of the first inner conductor 101 and the second inner conductor 102, or to observe the plugging of the first inner conductor 101 and the second inner conductor 102, the inner insulator 20 and the outer conductor 30 are provided with a first window 201 and a second window 301 respectively, which expose the connection between the first inner conductor 101 and the second inner conductor 102. The second window 301 is buckled with a cover plate 50, and the cover plate 50 is extended to the end of the inner conductor 10 to be fitted to the inner insulator 20, and the outer side of the pressure seat 501 is surrounded by a first sealing ring 502 which is in compression contact with the inner wall of the outer conductor 30, so that the window (including the first window 201 and the second window 301) opened on the curved RF connector to expose the 90-degree connection can be effectively sealed. Moreover, the embedded arrangement of the pressure seat 501 and the first sealing ring 502 will not have a great impact on the volume of the curved RF connector under the premise of having good sealing performance, and has good practicality and application prospects.

[0037] In one embodiment, if Figure 1As shown, the inner insulator 20 includes a horizontal section 202 and a vertical section 203, the first window 201 is opened at one end of the horizontal section 202 facing the cover plate 50, the pressure seat 501 is at least attached to the first window 201, when the cover plate 50 is buckled at the second window 301, the pressure seat 501 is attached to the first window 201, and the first sealing ring 502 is provided, so that the second window 301 and the first window 201 can be effectively sealed respectively. Furthermore, a pressure plate 503 arranged parallel to the cover plate 50 is formed at one end of the pressure seat 501 away from the cover plate 50, and an annular groove 506 for accommodating the first sealing ring 502 is formed between the pressure plate 503 and the cover plate 50, and the first sealing ring 502 is circumferentially arranged in the annular groove 506. When the cover plate 50 is buckled at the second window 301, the first sealing ring 502 is squeezed and contacted with the inner wall of the outer conductor 30 to achieve effective sealing of the RF connector of the utility model.

[0038] like Figure 1-Figure 4 As shown, a first step structure 302 for positioning the pressure plate 503, a second step structure 303 for positioning the first sealing ring 502, and a third step structure 304 for positioning the cover plate 50 are provided on the inner wall of the outer conductor 30, and the first step structure 302, the second step structure 303 and the third step structure 304 are multi-step step structures that gradually expand outward along the radial direction of the first inner conductor 101. The setting of the multi-step step structure can, on the one hand, position the sealing structure composed of the pressure plate 503, the pressure seat 501, the first sealing ring 502 and the cover plate 50 to ensure that the sealing structure composed of the four is installed in place and has a good sealing effect. On the other hand, the multi-step step structure has better waterproof performance than the planar structure.

[0039] Furthermore, if Figure 1 and Figure 4 As shown, the vertical section 203 is cylindrical, and a positioning plate 505 is correspondingly formed on the pressure plate 503. The positioning plate 505 has an arc groove 506 that matches the shape of the vertical section 203. When the cover plate 50 is buckled at the second window 301, the arc groove 506 fits and abuts against the outer side of the vertical section 203, so as to further achieve the purpose of positioning the installation of the sealing structure composed of the pressure plate 503, the pressure seat 501, the first sealing ring 502 and the cover plate 50.

[0040] In one embodiment, if Figure 1 and Figure 3As shown, the end of the second inner conductor 102 away from the first inner conductor 101 is connected to the cable assembly 60, and the outer conductor 30 is provided with a sleeve section 305 for extending the free end of the cable assembly 60. After the free end of the cable assembly 60 extends out from the outer conductor 30, it is connected to the outer conductor 30 through a crimping piece 70, and the sleeve section 305, the crimping piece 70 and the outer side of part of the cable assembly 60 are jointly sleeved with a heat shrink tube 80, and the connection between the sleeve section 305, the crimping piece 70 and part of the cable assembly 60 can be effectively sealed by the heat shrink tube 80; further, at least one groove 306 recessed inwardly is circumferentially arranged on the outer peripheral wall of the sleeve section 305, and the heat shrink tube 80 is covered on the outer side of the groove 306 during heat sealing, so as to achieve a better sealing effect and effectively prevent the heat shrink tube 80 from falling off from the outer side of the sleeve section 305 when subjected to force.

[0041] In one embodiment, if Figure 1 As shown, a spring terminal 309 matching with the mating connector 2 is embedded on the inner side of the outer conductor 30, and the spring terminal 309 is used to mate with the outer conductor of the mating connector 2, so that the overall connector assembly has good signal shielding performance after assembly, thereby ensuring the stability of radio frequency signal transmission; a locking ring 310 is provided on the side of the spring terminal 309 facing the mating connector 2, and the locking ring 310 and the outer conductor 30 are assembled by riveting process, so that the spring terminal 309 can be stably fixed between the inner insulator 20 and the outer conductor 30, preventing the spring terminal 309 from falling off after multiple plugging and unplugging with the outer conductor of the mating connector 2. Furthermore, in order to achieve a better sealing performance after the RF connector 1 is connected to the mating connector 2, at least one sealing groove 307 is circumferentially arranged on the outer peripheral wall of the end of the outer conductor 30 facing the mating connector 2, and a second sealing ring 308 is embedded in the sealing groove 307. After the RF connector 1 is plugged and matched with the mating connector 2, the connection between the mating connector 2 and the RF connector 1 can achieve better sealing performance through the second sealing ring 308. For details, please refer to Figure 5 .

[0042] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A sealed radio frequency connector, which is connected to a mating connector, and comprises an inner conductor, an inner insulator, an outer conductor and a sheath arranged in sequence from the inside to the outside, wherein the sheath is arranged around the outside of at least part of the outer conductor, wherein the inner conductor comprises a first inner conductor and a second inner conductor, wherein the first inner conductor and the second inner conductor are arranged to intersect and are conductively connected, wherein the inner insulator and the outer conductor are provided with a first window and a second window respectively to expose the connection between the first inner conductor and the second inner conductor, wherein a cover plate is buckled and connected at the second window, wherein: A pressing seat is extended from one end of the cover plate facing the inner conductor and is fitted to the inner insulator, and a first sealing ring is arranged around the outer side of the pressing seat and is in compression contact with the inner wall of the outer conductor.

2. A sealed radio frequency connector according to claim 1, characterized in that: The first inner conductor is arranged perpendicular to the second inner conductor.

3. A sealed radio frequency connector according to claim 2, characterized in that: The inner insulator comprises a horizontal section and a vertical section, the first window is opened at one end of the horizontal section facing the cover plate, and the pressure seat is at least attached to the first window.

4. A sealed radio frequency connector according to claim 3, characterized in that: A pressing plate arranged parallel to the cover plate is formed at one end of the pressing seat away from the cover plate, and an annular groove for accommodating the first sealing ring is formed between the pressing plate and the cover plate.

5. A sealed radio frequency connector according to claim 4, characterized in that: A first step structure for positioning the pressure plate, a second step structure for positioning the first sealing ring, and a third step structure for positioning the cover plate are provided on the inner wall of the outer conductor, and the first step structure, the second step structure and the third step structure are multi-step step structures that gradually expand radially outward along the first inner conductor.

6. A sealed radio frequency connector according to claim 4, characterized in that: The vertical section is cylindrical, and a positioning plate is correspondingly formed on the pressing plate. The positioning plate has an arc groove matching the shape of the vertical section.

7. The sealed radio frequency connector according to claim 1, characterized in that: The end of the second inner conductor away from the first inner conductor is connected to a cable assembly, and the outer conductor has a sleeve section that allows the free end of the cable assembly to extend out. The free end of the cable assembly extends out of the outer conductor and is connected to the outer conductor through a crimping piece, and a heat shrink tube is commonly sleeved on the outer side of the sleeve section, the crimping piece and part of the cable assembly.

8. The sealed radio frequency connector according to claim 7, characterized in that: At least one groove recessed inwardly is circumferentially arranged on the outer peripheral wall of the sleeve segment.

9. The sealed radio frequency connector according to claim 1, characterized in that: At least one sealing groove is circumferentially arranged on the outer peripheral wall of one end of the outer conductor facing the mating connector, and a second sealing ring is embedded in the sealing groove.

10. The sealed radio frequency connector according to claim 1, characterized in that: A spring terminal matched with the mating connector is embedded in the inner side of the outer conductor, and a locking ring is arranged on the side of the spring terminal facing the mating connector.

11. The sealed radio frequency connector according to claim 10, characterized in that: The locking ring and the outer conductor are assembled by adopting a riveting process.

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