Shaft floating radio frequency connector

Abstract

The utility model discloses a shaft floating radio frequency connector, which is characterized in that one end of an outer conductor insert of a terminal assembly, which is far away from a matching connector, is provided with a spring piece, and the other end of the outer conductor insert realizes secondary locking of the terminal assembly in a sheath through a primary locking cantilever and a stop piece in sequence. The terminal assembly is pre-positioned through the primary locking cantilever before the blocking piece is inserted, so that the terminal assembly and the blocking piece can be conveniently assembled, on the other hand, floating connection of the terminal assembly in the sheath terminal cavity can be realized, and when the radio frequency connector is connected with a matching connector in a matching manner, the terminal assembly is prevented from being blocked by the blocking piece. 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, in particular to an axially floating radio frequency connector. 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 and is a type 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. The tail of the inner conductor is connected to a cable extending outside the sheath. Since the FAKRA radio frequency connector has many parts, the tolerance accumulation after product assembly is relatively large, resulting in an inevitable axial gap when the connector is inserted and used, thereby forming a local high impedance and 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 an axially floating radio frequency connector to solve the technical problems mentioned in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: an axially floating radio frequency connector, which is cooperatively connected with a mating connector, includes a sheath, a terminal assembly installed in the terminal cavity of the sheath, and a cable with one end connected to the terminal assembly. The other end of the cable extends outside the sheath after extending from the end of the sheath away from the mating connector. An outer conductor insert is circumferentially arranged on the outer peripheral wall of the terminal assembly. A spring member is arranged at the end of the terminal cavity away from the mating connector of the outer conductor insert, and the spring member is circumferentially arranged outside the cable and part of the terminal assembly. The outer conductor insert has a stepped surface arranged along the circumferential direction. A primary locking cantilever is arranged on the inner wall of the sheath along the direction in which the terminal assembly exits the terminal cavity, and the free end of the primary locking cantilever is in snap-fit connection with the stepped surface;

[0006] A plugging cavity communicating with the terminal cavity is formed on the sheath, and a blocking member for blocking and cooperating with the stepped surface is detachably arranged in the plugging cavity.

[0007] In some embodiments, the primary locking cantilever is pressed against the inner side of the stopper, and a disassembly hole is formed through the end face of the primary locking cantilever.

[0008] In some embodiments, when the primary locking cantilever is in snap-fit engagement with the stepped surface, the spring member abuts against the outer conductor insert.

[0009] 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 stepped surface is provided on the inner side of the stopper portion, and at least one stopper portion is in snap-fit engagement with the inner wall of the insertion cavity.

[0010] In some embodiments, the free end of the primary locking cantilever extends between the two stopper portions, and the free end of the primary locking cantilever is pressed against the inner side of the main body portion.

[0011] In some embodiments, a protrusion is provided protruding from the outer side of at least one 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 in sequence to realize the 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 stepped surface.

[0012] In some embodiments, a recessed groove for facilitating the inward depression of the protrusion is provided on the stopper portion provided with the protrusion along the direction in which the stopper is inserted into the insertion cavity.

[0013] 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.

[0014] In some embodiments, a notch for facilitating the disassembly of the lapping plate is formed at one end of the lapping plate away from the main body portion.

[0015] In some embodiments, the lapping plate and the main body portion are integrally injection-molded and are perpendicular to each other.

[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 terminal assembly of the present utility model away from the mating connector, and the other end realizes secondary locking of the terminal assembly in the sheath through a primary locking cantilever and a stop member in sequence. With the above structural arrangement, on the one hand, since the terminal assembly is pre-positioned by the primary locking cantilever before the stop member is inserted, it is convenient for the assembly of the terminal assembly and the stop member. On the other hand, floating connection of the terminal assembly in the terminal cavity of the sheath can be achieved, and further, when the RF connector is mated with the mating connector, the axial mating clearance between the male and female terminal ends can be effectively eliminated to achieve more stable and higher-speed signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings incorporated in and forming a part of this specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0018] Figure 1 FIG. is a schematic structural diagram of an axial floating RF connector provided by the present utility model;

[0019] Figure 2 After the stop member is removed, Figure 1 FIG. is a schematic structural diagram of the axial floating RF connector shown;

[0020] Figure 3 and Figure 4 FIG. is Figure 1 a cross-sectional view of the axial floating RF connector shown at different angles;

[0021] Figure 5 FIG. is Figure 1 a schematic connection diagram of the terminal assembly and the cable in the RF connector assembly shown;

[0022] Figure 6 FIG. is Figure 1 a schematic structural diagram of the stop member in the RF connector assembly shown;

[0023] Figure 7 FIG. is Figure 1 a schematic exploded view of the RF connector assembly shown.

[0024] The labels in the figures are as follows:

[0025] 10. Sheath; 101. Terminal cavity; 102. Insertion cavity; 103. Pre-positioning hole; 104. Stop position hole; 105. Lapping groove;

[0026] 20. Terminal assembly; 201. Inner conductor; 202. Inner insulator; 203. Outer conductor;

[0027] 30. Cable; 301. Conductive core; 302. Inner insulation layer; 303. Shielding layer; 304. Outer insulation layer;

[0028] 40. Outer conductor insert; 401. Step surface;

[0029] 50. Stopper; 501. Main body part; 502. Stopping part; 503. Stopping surface; 504. Protrusion; 505. Recessed groove; 506. Lapping plate; 507. Notch;

[0030] 60. Spring part;

[0031] 70. Crimping piece;

[0032] 80. Direction of inserting the stopper into the insertion cavity;

[0033] 90. Primary locking cantilever; 901. Demounting hole. Detailed implementation manners

[0034] Now, various exemplary embodiments of the present utility model 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 values set forth in these embodiments do not limit the scope of the present utility model.

[0035] The following description of at least one exemplary embodiment is actually merely illustrative and in no way restricts the present utility model and its application or use.

[0036] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification.

[0037] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0038] As Figures 1-7As shown in the figure, a shaft-floating RF connector is connected in cooperation 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 the 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 arranged in sequence from the inside to the outside. The cable 30 includes a conductive core 301, an inner insulating layer 302, a shielding layer 303, and an outer insulating layer 304 arranged in sequence from the inside to the outside. The conductive core 301 and the shielding layer 303 are electrically connected to the inner conductor 201 and the outer conductor 203 respectively to achieve stable transmission of RF 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.

[0039] As Figures 1-5 shown in the figure, 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 arranged at the end of the terminal cavity 101 away from the mating connector of the outer conductor insert 40, 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 primary locking cantilever 90 is arranged on the inner wall of the sheath 10 and extends along the direction in which the terminal assembly 20 withdraws from the terminal cavity 101. The free end of the primary locking cantilever 90 is in snap-fit with the stepped surface 401. A plugging cavity 102 communicating with the terminal cavity 101 is formed on the sheath 10, and a stopper 50 detachably arranged 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 that floating connection of the terminal assembly 20 in the terminal cavity 101 of the sheath 10 can be realized. Furthermore, when the RF connector is mated with the mating connector, the axial mating clearance between the male and female terminal ends can be effectively eliminated to achieve more stable and higher-speed signal transmission. Moreover, since the terminal assembly 20 is pre-positioned by the primary locking cantilever 90 before the stopper 50 is inserted, the assembly of the terminal assembly 20 and the stopper 50 can be facilitated.

[0040] In an embodiment, as Figure 3 、 Figure 4 and Figure 6As shown, the stopper 50 includes a main body portion 501 and stopper portions 502 located on both sides of the main body portion 501. An inner side of the stopper portion 502 is provided with a stopper surface 503 that can be in stopper cooperation with the step surface 401. 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 primary locking cantilever 90 presses against the inner side of the stopper 50. Specifically: the free end of the primary locking cantilever 90 extends between the two stopper portions 502, and the free end of the primary locking cantilever 90 presses against the inner side of the main body portion 501. In addition to directly performing stopper cooperation with the step surface 401, the stopper 50 can also abut against the primary locking cantilever 90 to prevent the terminal assembly 20 from accidentally withdrawing from the sheath 10 when subjected to an external force; as Figure 2 As shown, a disassembly hole 901 is penetratingly provided on the end surface of the primary locking cantilever 90. When it is necessary to remove the terminal assembly 20 from the sheath 10, first switch the stopper 50 from the stopper position to the pre-assembly position, or directly remove the stopper 50 from the sheath 10. Then, insert a sharp object into the disassembly hole 901 to lift the free end of the primary locking cantilever 90. Under the action of the spring member 60, the terminal assembly 20 can be withdrawn from the sheath 10.

[0041] Further, a snap-fit is provided between the outer side of at least one stopper portion 502 and the inner wall of the insertion cavity 102. After the stopper 50 is inserted into the insertion cavity 102, it is snap-fitted with the inner wall of the insertion cavity 102 through a snap structure and is 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. Here, it should be noted 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 7 ; 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 Figure 7 shown, first insert the cable 30 into the terminal cavity 101 from the end of the sheath 10 away from the mating connector. Then connect the terminal assembly 20 and the cable 30 through a crimping member 70. Then pull the cable 30 to compress the spring member 60 by the terminal assembly 20 until the step surface 401 of the outer conductor insert 40 is in snap-fit with the free end of the primary locking cantilever 90, and then stop pulling the cable 30. At this time, the step surface 401 of the outer conductor insert 40 is exposed from the insertion cavity 102. Finally, insert the stopper 50 into the insertion cavity 102 to complete the assembly of the RF connector of the present utility model. Since the terminal assembly 20 has been pre-positioned by the primary locking cantilever 90 before the stopper 50 is inserted, the assembly of the terminal assembly 20 and the stopper 50 can be facilitated.

[0042] As Figure 1 、 Figure 4 andFigure 7 As shown, a protrusion 504 is provided on the outer side of at least one stopper 502. On the inner wall of the insertion cavity 102, a pre-positioning hole 103 and a stopper position hole 104 are sequentially arranged 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 enters the pre-positioning hole 103 and the stopper position hole 104 successively to realize the positioning of the pre-installed position and the stopper position of the stopper 50. Before the assembly of the RF connector starts, the stopper 50 is in the pre-installed position on the sheath 10. At this time, there is no interference relationship between the stopper 50, the outer conductor insert 40, and the step surface 401. After the terminal assembly 20 and the cable 30 are connected by the crimping member 70, the cable 30 is pulled to compress the spring member 60 by the terminal assembly 20 until the step surface 401 of the outer conductor insert 40 is clamped and matched with the free end of the primary locking cantilever 90, then the pulling of the cable 30 stops. At this time, the step surface 401 of the outer conductor insert 40 is exposed from the insertion cavity 102. Finally, the stopper 50 is pushed from the pre-installed position into the stopper position. At this time, the stopper 50 is in stopper cooperation with the step surface 401 to realize the assembly of the RF connector of the present utility model. For the convenience of assembling the stopper 50, a recessed groove 505 for facilitating the inward depression of the protrusion 504 is provided on the stopper 502 provided with the protrusion 504 along the direction 80 in which the stopper is inserted into the insertion cavity.

[0043] In one embodiment, as Figure 3 and Figure 6 shown, a lapping plate 506 is integrally provided at one end of the main body portion 501 away from the terminal assembly 20. 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 for facilitating the disassembly of the lapping plate 506 is provided 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 retreat from the stopper position to the predetermined position, and then the stopper 50 is further tilted upward to realize the disassembly of the stopper 50.

[0044] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.

Claims

1. An axial floating radio frequency connector, which is cooperatively connected with a mating connector, comprising a sheath, a terminal assembly installed in a terminal cavity of the sheath, and a cable with one end connected to the terminal assembly, and the other end of the cable extends out from the 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 the end of the outer conductor insert away from the mating connector in the terminal cavity, and the spring member is circumferentially arranged outside one end of the cable and a part of the terminal assembly. It is characterized in that: The outer conductor insert has a stepped surface arranged circumferentially. A primary locking cantilever is arranged on the inner wall of the sheath and extends along the direction in which the terminal assembly exits the terminal cavity. The free end of the primary locking cantilever is in snap-fit with the stepped surface; A plugging cavity communicating with the terminal cavity is formed on the sheath, and a blocking member for blocking and cooperating with the stepped surface is detachably arranged in the plugging cavity.

2. The axial floating RF connector according to claim 1, wherein: The primary locking cantilever presses against the inner side of the blocking member, and a disassembly hole is penetrated through the end surface of the primary locking cantilever.

3. The shaft floating RF connector according to claim 1, characterized in that: When the primary locking cantilever is in snap-fit with the stepped surface, the spring member abuts against the outer conductor insert.

4. The shaft floating radio frequency connector according to claim 1, characterized in that: The blocking member includes a main body portion and blocking portions located on both sides of the main body portion. A blocking surface for blocking and cooperating with the stepped surface is arranged on the inner side of the blocking portion, and at least one of the outer sides of the blocking portions is in snap-fit with the inner wall of the plugging cavity.

5. The shaft floating radio frequency connector according to claim 4, wherein: The free end of the primary locking cantilever extends between the two blocking portions, and the free end of the primary locking cantilever presses against the inner side of the main body portion.

6. The shaft floating RF connector according to claim 4, characterized in that: At least one of the outer sides of the blocking portions protrudes with a protruding portion. A pre-positioning hole and a blocking position hole are sequentially arranged on the inner wall of the plugging cavity along the direction in which the blocking member is inserted into the plugging cavity. During the process of inserting the blocking member into the plugging cavity, the protruding portion successively enters the pre-positioning hole and the blocking position hole to realize the positioning of the pre-installed position and the blocking position of the blocking member. When the blocking member is in the blocking position, the blocking member is in blocking cooperation with the stepped surface.

7. The shaft floating RF connector according to claim 6, wherein: A recessed groove facilitating the inward depression of the protruding portion is arranged on the blocking portion provided with the protruding portion along the direction in which the blocking member is inserted into the plugging cavity.

8. The shaft floating RF connector according to claim 4, wherein: A lapping plate is integrally arranged at the end of the main body portion away from the terminal assembly. A lapping groove matching with the lapping plate is arranged on the sheath outside the plugging cavity. After the blocking member is inserted into the plugging cavity, at least a part of the lapping plate is embedded in the lapping groove.

9. The shaft floating radio frequency connector according to claim 8, wherein: A notch facilitating the disassembly of the lapping plate is formed at the end of the lapping plate away from the main body portion.

10. A shaft floating RF connector according to claim 8, characterized in that: The lapping plate and the main body portion are integrally injection-molded and are perpendicularly arranged therebetween.

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