Radio frequency connector capable of axially floating

Abstract

The utility model discloses a radio frequency connector capable of floating axially, which comprises a sheath, a terminal assembly arranged in a terminal cavity of the sheath and a cable with one end connected with the terminal assembly, and an outer conductor insert is arranged on the peripheral wall of the terminal assembly in a surrounding manner. According to the radio frequency connector provided by the utility model, the spring piece is arranged at one end, far away from the matching connector, of the outer conductor insert, and the stop piece is used for stopping the terminal assembly, so that the floating connection of the terminal assembly in the sheath terminal cavity can be realized, and when the radio frequency connector is matched and connected with the matching connector, the terminal assembly can be prevented from floating. The axial matching gap between the male end terminal and the female end terminal can be effectively eliminated, so that more stable and higher-speed signal transmission can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency connectors, and particularly relates to a radio frequency connector capable of axial floating. Background Art

[0002] In the era of traditional fuel vehicles, the demand for data transmission in automobiles mostly focused on below 10M. However, with the development of vehicle networking and advanced driver assistance systems (ADAS), the demand for data transmission in automobiles has greatly increased, and the application fields of data transmission connectors in vehicles have also been expanded, and they are applied in cameras, sensors, broadcast antennas, GPS, WiFi, Bluetooth, keyless entry, infotainment systems, navigation and driver assistance systems, etc.

[0003] FAKRA is the abbreviation of FAchKReis Automobil, which is a kind of data transmission connector. Nowadays, FAKRA has become a general standard radio frequency connector in the automotive industry and is widely used in the industry. Currently, the FAKRA radio frequency connectors on the market mainly include: a sheath, a TPA, and a terminal assembly composed of an inner conductor, an inner insulator, and an outer conductor. A cable extending out of the sheath is connected to the tail of the inner conductor. Since there are many parts in the FAKRA radio frequency connector, the tolerance accumulation after product assembly is large, resulting in an inevitable axial gap when the connector is inserted and used, thus forming a local high impedance and resulting in poor radio frequency signal transmission performance. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a radio frequency connector capable of axial floating to solve the technical problems mentioned in the background art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a radio frequency connector capable of axial floating, which is cooperatively connected with a mating connector, includes a sheath, a terminal assembly installed in a terminal cavity of the sheath, and a cable with one end connected to the terminal assembly. The other end of the cable extends out from one end of the sheath away from the mating connector and is arranged outside the sheath. An outer conductor insert is circumferentially arranged on the outer peripheral wall of the terminal assembly. A spring member is arranged at one end of the terminal cavity away from the mating connector outside the outer conductor insert, and the spring member is circumferentially arranged outside the cable and part of the terminal assembly;

[0006] The outer conductor insert has a stepped surface arranged circumferentially. The sheath is provided with a plugging cavity communicated with the terminal cavity, and a blocking member detachably arranged in the plugging cavity and in blocking cooperation with the stepped surface is provided.

[0007] In some embodiments, when the blocking member is in blocking cooperation with the stepped surface, the spring member abuts against the outer conductor insert.

[0008] In some embodiments, the stopper includes a main body portion and stopper portions located on both sides of the main body portion. A stopper surface that can be in stopper cooperation with the step surface is provided on the inner side of the stopper portion, and a snap-fit cooperation is provided between the outer side of the stopper portion and the inner wall of the insertion cavity.

[0009] In some embodiments, a protrusion is provided in a protruding manner on the outer side of the stopper portion. A pre-positioning hole and a stopper position hole are sequentially provided on the inner wall of the insertion cavity along the direction in which the stopper is inserted into the insertion cavity. During the process of inserting the stopper into the insertion cavity, the protrusion enters the pre-positioning hole and the stopper position hole successively to achieve positioning of the pre-installed position and the stopper position of the stopper. And when the stopper is in the stopper position, the stopper is in stopper cooperation with the step surface.

[0010] In some embodiments, a recessed groove for facilitating the inward depression of the protrusion is provided on the stopper portion along the direction in which the stopper is inserted into the insertion cavity.

[0011] In some embodiments, a lapping plate is integrally provided at one end of the main body portion away from the terminal assembly. The sheath is provided with a lapping groove matching the lapping plate on the outer side of the insertion cavity. After the stopper is inserted into the insertion cavity, at least a part of the lapping plate is embedded in the lapping groove.

[0012] In some embodiments, a notch for facilitating the disassembly of the lapping plate is provided at one end of the lapping plate away from the main body portion.

[0013] In some embodiments, the lapping plate and the main body portion are integrally injection-molded and are perpendicularly arranged therebetween.

[0014] In some embodiments, the terminal assembly includes an inner conductor, an inner insulator, and an outer conductor sequentially arranged from the inside to the outside. The cable includes a conductive core, an inner insulating layer, a shielding layer, and an outer insulating layer sequentially arranged from the inside to the outside. The conductive core and the shielding layer are electrically connected to the inner conductor and the outer conductor respectively.

[0015] In some embodiments, a crimping piece is jointly pressed on the outer sides of the outer insulating layer and a part of the outer conductor.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: A spring member is provided at one end of the outer conductor insert of the RF connector of the present utility model away from the mating connector, and the stopper is used to achieve the stop position of the terminal assembly, so that the floating connection of the terminal assembly in the terminal cavity of the sheath can be realized. Furthermore, when the RF connector is in mating connection with the mating connector, the axial mutual mating clearance between the male and female terminal ends can be effectively eliminated to achieve more stable and higher-speed signal transmission. Description of the Drawings

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention.

[0018] Figure 1 Schematic structural diagram of an axially floating radio frequency connector provided for the present invention;

[0019] Figure 2 For Figure 1 Schematic diagram of the connection relationship between the terminal assembly and the cable in the radio frequency connector assembly shown;

[0020] Figure 3 Second axonometric view of the radio frequency connector assembly;

[0021] Figure 4 For Figure 1 Schematic structural diagram of the stopper in the radio frequency connector assembly shown;

[0022] Figure 5 For Figure 1 Exploded schematic diagram of the radio frequency connector assembly shown.

[0023] The labels in the figures are as follows:

[0024] 10. Sheath; 101. Terminal cavity; 102. Insertion cavity; 103. Pre-positioning hole; 104. Stopper hole; 105. Lapping groove;

[0025] 20. Terminal assembly; 201. Inner conductor; 202. Inner insulator; 203. Outer conductor;

[0026] 30. Cable; 301. Conductive core; 302. Inner insulation layer; 303. Shielding layer; 304. Outer insulation layer;

[0027] 40. Outer conductor insert; 401. Step surface;

[0028] 50. Stopper; 501. Main body part; 502. Stopper part; 503. Stopping surface; 504. Protrusion part; 505. Concave groove; 506. Lapping plate; 507. Notch;

[0029] 60. Spring part;

[0030] 70. Crimping piece;

[0031] 80. Direction of inserting the stopper into the insertion cavity. Detailed implementation manners

[0032] Now, various exemplary embodiments of the present invention will 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 a limitation on the present utility model or its application or use.

[0034] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0035] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Accordingly, other examples of the exemplary embodiments may have different values.

[0036] As Figures 1 - 5 shown, an axially floating radio frequency connector is cooperatively connected with a mating connector, and includes a sheath 10, a terminal assembly 20 installed in a terminal cavity 101 of the sheath 10, and a cable 30 with one end connected to the terminal assembly 20. The other end of the cable 30 extends out from one end of the sheath 10 away from the mating connector and is disposed outside the sheath 10. The terminal assembly 20 includes an inner conductor 201, an inner insulator 202, and an outer conductor 203 sequentially arranged from inside to outside. The cable 30 includes a conductive core 301, an inner insulating layer 302, a shielding layer 303, and an outer insulating layer 304 sequentially arranged from inside to outside. The conductive core 301 and the shielding layer 303 are respectively conductively connected to the inner conductor 201 and the outer conductor 203 to achieve stable transmission of radio frequency signals. A crimping piece 70 is jointly pressed on the outer sides of the outer insulating layer 304 and a part of the outer conductor 203 to prevent the cable 30 from withdrawing from the sheath 10 when subjected to an external force.

[0037] As Figure 1 and Figure 2 shown, an outer conductor insert 40 is circumferentially arranged on the outer peripheral wall of the terminal assembly 20. The outer conductor insert 40 is made of an insulating material, preferably a plastic material injection molded on the outer peripheral wall of the terminal assembly 20. A spring member 60 is disposed at one end of the terminal cavity 101 of the sheath 10 away from the mating connector, and the spring member 60 is circumferentially arranged outside the cable 30 and a part of the terminal assembly 20. The outer conductor insert 40 has a stepped surface 401 arranged in the circumferential direction. A plugging cavity 102 communicating with the terminal cavity 101 is formed on the sheath 10, and a stopper 50 detachably disposed in the plugging cavity 102 is in blocking cooperation with the stepped surface 401. When the stopper 50 is in blocking cooperation with the stepped surface 401, the spring member 60 abuts against the outer conductor insert 40, so as to realize the floating connection of the terminal assembly 20 in the terminal cavity 101 of the sheath 10. Furthermore, when the radio frequency connector is in mating connection with the mating connector, the axial mutual mating clearance between the male and female terminal ends can be effectively eliminated to achieve more stable and higher-speed signal transmission.

[0038] In one embodiment, as shown in Figure 4 and Figure 5 , the stopper 50 includes a main body portion 501 and stopper portions 502 located on both sides of the main body portion 501. A stopper surface 503 that can be in stopper cooperation with the step surface 401 is provided on the inner side of the stopper portion 502. The stopper surface 503 is generally an arc surface. After the stopper 50 is inserted into the insertion cavity 102, the arc surface is in stopper cooperation with the step surface 401. The outer side of the stopper portion 502 is in snap-fit with the inner wall of the insertion cavity 102. After the stopper 50 is inserted into the insertion cavity 102, it is in snap-fit with the inner wall of the insertion cavity 102 through a snap structure and in stopper cooperation with the step surface 401 through the stopper surface 503 to prevent the terminal assembly 20 from withdrawing from the sheath 10. It should be noted here that in the present utility model, the terminal assembly 20 is inserted into the terminal cavity 101 from the end of the sheath 10 facing the mating connector. For details, please refer to Figure 5 ; after the terminal assembly 20 is inserted into the terminal cavity 101, the front and rear stops of the terminal assembly 20 are respectively achieved through the spring member 60 and the stopper 50. Specifically, when assembling the RF connector of the present utility model, as shown in Figure 5 , first, the cable 30 is inserted into the terminal cavity 101 from the end of the sheath 10 away from the mating connector, then the terminal assembly 20 is connected to the cable 30 through the crimping member 70, then the cable 30 is pulled to compress the spring member 60 by the terminal assembly 20, so that the step surface 401 of the outer conductor insert 40 is exposed from the insertion cavity 102, and finally the stopper 50 is inserted into the insertion cavity 102 to complete the assembly of the RF connector of the present utility model.

[0039] As shown in Figure 3 and Figure 4 , a protrusion 504 is protrudingly provided on the outer side of the stopper portion 502. A pre-positioning hole 103 and a stop-positioning hole 104 are sequentially provided on the inner wall of the insertion cavity 102 along the direction 80 in which the stopper is inserted into the insertion cavity. During the process of inserting the stopper 50 into the insertion cavity 102, the protrusion 504 successively enters the pre-positioning hole 103 and the stop-positioning hole 104 to position the pre-installation position and the stop position of the stopper 50. Before the assembly of the RF connector begins, the stopper 50 is located at a predetermined position on the sheath 10. At this time, there is no interference relationship between the stopper 50 and the outer conductor insert 40 and the step surface 401. After the terminal assembly 20 is connected to the cable 30 through the crimping member 70, the cable 30 is pulled to compress the spring member 60 by the terminal assembly 20, so that the step surface 401 of the outer conductor insert 40 is exposed from the insertion cavity 102, and finally the stopper 50 is pushed from the predetermined position to the stop position. At this time, the stopper 50 is in stopper cooperation with the step surface 401 to complete the assembly of the RF connector of the present utility model. To facilitate the assembly of the stopper 50, a recessed groove 505 for facilitating the inward depression of the protrusion 504 is provided on the stopper portion 502 along the direction 80 in which the stopper is inserted into the insertion cavity.

[0040] In one embodiment, as Figure 3 and Figure 4 shown, at one end of the main body portion 501 away from the terminal assembly 20, a lapping plate 506 is integrally provided. The lapping plate 506 and the main body portion 501 are integrally injection-molded, and are perpendicularly arranged therebetween; on the outer side of the insertion cavity 102 of the sheath 10, a lapping groove 105 matching the lapping plate 506 is provided. After the stopper 50 is inserted into the insertion cavity 102, at least a part of the lapping plate 506 is embedded in the lapping groove 105; further, a notch 507 facilitating the disassembly of the lapping plate 506 is formed at one end of the lapping plate 506 away from the main body portion 501. Specifically, when disassembling the stopper 50, a sharp object is inserted into the notch 507, and the lapping plate 506 is pried upward forcefully to make the stopper 50 retract from the blocking position to a predetermined position, and then the stopper 50 is continuously pried upward to realize the disassembly of the stopper 50.

[0041] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can 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. An axially floating radio frequency connector, which is connected to a mating connector, comprises a sheath, a terminal assembly installed in a terminal cavity of the sheath, and a cable connected to the terminal assembly at one end, wherein the other end of the cable extends from an end of the sheath away from the mating connector and is arranged outside the sheath, characterized in that: An outer conductor insert is disposed around the outer peripheral wall of the terminal assembly, a spring member is disposed in the terminal cavity at one end of the outer conductor insert away from the mating connector, and the spring member is disposed around the outside of the cable and part of the terminal assembly; The outer conductor insert is provided with a step surface arranged along the circumferential direction, the sheath is provided with a plug-in cavity communicated with the terminal cavity, and a stopper matched with the step surface is detachably arranged in the plug-in cavity.

2. The axially floating radio frequency connector according to claim 1, characterized in that: When the stopper is in stoppering cooperation with the step surface, the spring member abuts against the outer conductor insert.

3. The axially floating radio frequency connector according to claim 1, characterized in that: The stopper comprises a main body and stoppers located on both sides of the main body, the inner side of the stopper is provided with a stopper surface that can be matched with the step surface, and the outer side of the stopper is snap-fitted with the inner wall of the plug-in cavity.

4. The axially floating radio frequency connector according to claim 3, characterized in that: A protrusion is protruded on the outer side of the stop part, and a pre-positioning hole and a stop hole are sequentially provided on the inner wall of the plug-in cavity along the direction in which the stop member is inserted into the plug-in cavity. During the process of the stop member being inserted into the plug-in cavity, the protrusion enters the pre-positioning hole and the stop hole successively to realize the positioning of the pre-installed position and the stop position of the stop member, and when the stop member is at the stop position, the stop member cooperates with the step surface for stopping.

5. The axially floating radio frequency connector according to claim 4, characterized in that: The stopper is provided with a recessed groove along the direction in which the stopper is inserted into the plug-in cavity, which facilitates the protrusion to be recessed inward.

6. The axially floating radio frequency connector according to claim 3, characterized in that: A lap plate is integrally provided at one end of the main body away from the terminal assembly, and a lap groove matching the lap plate is provided on the outer side of the plug-in cavity of the sheath. After the stopper is installed in the plug-in cavity, the lap plate is at least partially embedded in the lap groove.

7. The axially floating radio frequency connector according to claim 6, characterized in that: A notch is provided at one end of the lap plate away from the main body for facilitating disassembly of the lap plate.

8. The axially floating radio frequency connector according to claim 6, characterized in that: The lap plate and the main body are integrally injection-molded and are vertically arranged therebetween.

9. The axially floating radio frequency connector according to claim 1, characterized in that: The terminal assembly includes an inner conductor, an inner insulator and an outer conductor arranged in sequence from the inside to the outside, and the cable includes a conductive core, an inner insulating layer, a shielding layer and an outer insulating layer arranged in sequence from the inside to the outside, and the conductive core and the shielding layer are conductively connected to the inner conductor and the outer conductor respectively.

10. The axially floating radio frequency connector according to claim 9, characterized in that: The outer sides of the outer insulating layer and part of the outer conductor are jointly pressed with crimping pieces.

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