CN218513789U - Large-tolerance radio frequency connector - Google Patents

Abstract

The utility model provides a large tolerance radio frequency connector, including shell, insulator and the inner conductor of coaxial setting, insulator fixed mounting is between shell and inner conductor, and the inner conductor includes a fixed conductor and a movable conductor, and fixed conductor's one end is equipped with the sleeve pipe, and it is intraductal that the cover is inserted to movable conductor's one end slidable, and the cover intraductal is equipped with the first spring that provides outside thrust to movable conductor, and the sheathed tube tip binding off is the toper tube lamella, toper tube lamella and movable conductor's outer cylinder elastic contact. The utility model has simple structure and good reliability, and the movable conductor has a certain expansion space in the axial direction through the matching of the movable conductor, the first spring and the fixed conductor; and based on the elastic force of the conical pipe flap, the radio frequency connector has low requirements on dimensional accuracy and force, is good in contact, is not easy to wear and has long service life. The utility model discloses still have the big tolerance that is independent of the flexible space production of shell of inner conductor through the cooperation of outer sleeve and shell, second spring. The radio frequency performance is good in the working frequency range of 0-6 GHz and the corresponding tolerance range.

Description

Large-tolerance radio frequency connector

Technical Field

The utility model relates to a connector especially relates to a big tolerance radio frequency test connector.

Background

With the rapid development of communication technology, people have higher and higher requirements on network transmission rate, and in order to meet the requirements of different users on network transmission rate, a leading company in the communication industry starts to research and develop 5G after 4G. Radio frequency coaxial connectors are widely used in various fields as important components of electronic components for microwave signal transmission, and as high frequency, miniaturization and modularization of various devices, multi-channel connectors between boards are widely used. In the production of equipment, before debugging a system, the radio frequency performance of the subsystem and the module needs to be tested, whether the radio frequency performance of the system meets the requirement is checked, and meanwhile, problematic elements are found out for replacement and maintenance.

Connectors for 5G devices attached to PCBs are many multi-channel and require simultaneous testing of the connectors, but the position of the connections may vary in both axial and radial directions due to the process or the connector itself, which places tolerance requirements on the test connector in both axial and radial directions and requires that the tolerances of the connector's housing and the tolerances of the inner conductors be independent of each other in order to ensure good contact of both the housing and inner conductors. Still another application is the detection of electrical properties of a PCB in a system prior to un-soldering or mounting a connector to determine if the rf performance of the finished PCB meets design requirements. There are multiple points on the bulk PCB that need to be tested, and there are also axial and radial tolerance requirements for the test connector for alignment. Moreover, as the test connector installed in the test system is often inconvenient to replace, a long life is required for this.

The inner conductors of the conventional floating connector are hooked by using claw structures, so that the size design and force requirements are strict, and the abrasion and poor contact of the inner conductors are easily caused.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art, the to-be-solved technical problem of the present invention is to provide a large-tolerance rf connector, which can realize the large tolerance of the rf connector in axial translation and radial offset, and has good rf performance in the working frequency band and the corresponding tolerance range.

In order to achieve the above object, the present invention provides a large-tolerance radio frequency connector, which includes a housing, an insulator and an inner conductor, which are coaxially disposed, wherein the insulator is fixedly installed between the housing and the inner conductor; the inner conductor comprises a fixed conductor and a movable conductor, a sleeve is arranged at one end of the fixed conductor, one end of the movable conductor is slidably inserted into the sleeve, a first spring providing outward thrust for the movable conductor is arranged in the sleeve, the end of the sleeve is closed up to be a conical tube flap, and the conical tube flap is in elastic contact with the outer cylindrical surface of the movable conductor.

Preferably, the movable conductor comprises a first column section, a second column section and a third column section which are connected integrally, the diameter of the first column section is smaller than that of the second column section, the second column section is axially slidably installed in the sleeve, and the inner wall of the conical tube clack is in elastic contact with the outer cylindrical surface of the first column section; the diameter of the third column section is smaller than that of the second column section, and one end of the first spring is sleeved on the third column section.

Further, the inner side surface of the conical pipe flap of the sleeve also comprises a first arc surface.

Further, the housing comprises a first housing, a second housing and a third housing, and the first housing and the third housing are fixedly installed at two ends of the second housing; the insulator comprises a first insulator, a second insulator and a third insulator; the first insulator is positioned in an annular gap between the first shell and the fixed conductor and is fixedly connected with the first shell and the fixed conductor; the second insulator is positioned in an annular gap between the second shell and the fixed conductor and is fixedly connected with the second shell; the third insulator is positioned in an annular gap between the third shell and the movable conductor and is fixedly connected with the third shell, and a center hole of the third insulator is in clearance sliding fit with the movable conductor.

Preferably, the central hole of the third insulator is a stepped hole and comprises a first hole section, a second hole section and a third hole section which are sequentially connected, wherein the inner diameter of the first hole section is slightly larger than the diameter of the second column section, and the inner diameter of the second hole section is slightly larger than the diameter of the first column section and slightly smaller than the diameter of the second column section; the inner diameter of the third hole section is larger than the outer diameter of the sleeve of the fixed conductor, and the conical pipe petal part of the fixed conductor is positioned in the third hole section.

Furthermore, a convex head section is further connected to the end portion of the first column section, the diameter of the convex head section is larger than the inner diameter of the first hole section, and the contact surface of the end portion of the convex head section is a second arc surface.

Further, the large-tolerance radio frequency connector further comprises an outer sleeve which is slidably sleeved on the second shell; the outer sleeve comprises a first convex ring, the second shell comprises a first stopping ring for stopping the first convex ring, and a second stopping ring is arranged on the third shell; the first convex ring is positioned between the first stop ring and the second stop ring, and a second spring is arranged between the first convex ring and the second stop ring.

Further, the large-tolerance radio frequency connector further comprises a sliding block fixedly installed in the outer sleeve, and the second housing further comprises an axial sliding groove; the sliding block is in sliding fit with the sliding groove.

Furthermore, the outer cylindrical surface of outer sleeve is equipped with the external screw thread and cooperatees with a lock nut, and the one end of outer sleeve is equipped with spacing boss.

Further, the outer sleeve further comprises a toothed washer which is matched with the locking nut.

Preferably, the outer cylindrical surface of the outer sleeve is D-shaped.

As mentioned above, the utility model relates to a large tolerance radio frequency connector has following beneficial effect:

the utility model has simple structure and good reliability, the inner conductor is divided into a fixed conductor and a movable conductor, and the movable conductor is provided with a certain expansion space in the axial direction through the matching of the movable conductor, the first spring and the fixed conductor; and based on the elastic force of the conical tube petals, the fixed conductor and the movable conductor can keep good contact and can slide relatively more smoothly. In the radio frequency connector of the utility model, the fixed conductor and the movable conductor have low requirements on the size precision and the force, good contact, difficult abrasion and long service life; simultaneously the utility model discloses an outer sleeve and the cooperation of shell, second spring still have the big tolerance that is independent of the flexible space production of shell of inner conductor. The movement of the inner conductor and the movement of the outer shell are independent of each other, with axial and radial tolerances, respectively, improving good contact of the outer shell and the inner conductor, respectively, with the corresponding abutment member, respectively, at the same time. The utility model discloses can avoid the contact failure of radio frequency connector and butting connector or circuit board effectively, can also cushion the impact that arouses because of the tolerance to effectively avoid damaging radio frequency connector itself and butting connector contact jaw or PCB. The utility model discloses still have from returning positive function, can get back to state placed in the middle by oneself after the offset. The utility model discloses not only the casing of own prevents changeing, but also the panel prevents changeing the function. The utility model discloses a design and electromagnetic field match, have good radio frequency performance in the tolerance range at 0 ~ 6GHz full frequency channel. The service life of the whole connector exceeds 10000 times.

Drawings

Fig. 1 is a schematic structural diagram of the large-tolerance rf connector of the present invention;

FIG. 2 is a schematic structural diagram of an inner conductor;

FIG. 3 is a schematic view of the structure of the stationary conductor and the first spring;

FIG. 4 is a schematic diagram of a movable conductor;

FIG. 5 is a schematic structural view of the housing;

FIG. 6 is a schematic view of a second housing;

FIG. 7 is a schematic structural diagram of a first insulator;

fig. 8 is a schematic structural view of a second insulator;

FIG. 9 is a side view of FIG. 8;

fig. 10 is a schematic structural view of a third insulator;

FIG. 11 is an enlarged view of a portion of the letter A in FIG. 1;

FIG. 12 is a schematic view of the construction of the outer sleeve and the slide block;

FIG. 13 is a side view of FIG. 12;

fig. 14A is a schematic structural view of the present invention connected to other connectors;

FIG. 14B is a cross-sectional view taken at letter B of FIG. 14A;

FIG. 15 is a schematic view of the connection application of the present invention with the PCB center contact point via hole wiring;

fig. 16A is a schematic view of another example of the large-tolerance rf connector according to the present invention, showing a structure of a groove formed in the bottom of the third housing;

fig. 16B is a schematic view of another example of the structure of the large-tolerance rf connector according to the present invention, which is connected to a PCB surface-mounted wire.

Description of the reference numerals

1. Outer casing

11. First shell

12. Second housing

13. Third shell

111. First barb

112. First step

121. First stop ring

122. Sliding chute

123. Second barb

124. Second step

131. Second stop ring

132. Third barb

2. Insulator

21. First insulator

211. Groove

22. Second insulator

221. Through hole

23. Third insulator

231. First hole section

232. Second hole section

233. Third bore section

3. Inner conductor

31. Fixed conductor

32. Movable conductor

33. First spring

311. Sleeve pipe

312. Conical pipe valve

313. Fourth barb

314. Rear end joint

316. First arc surface

317. Outer diameter of sleeve

318. Electroplating process hole

321. First column section

322. Second column section

323. Third column section

324. Convex head section

325. Fillet

326. Chamfering

327. Contact surface

328. Baffle surface

4. Outer sleeve

41. First convex ring

42. Second spring

43. Spacing boss

5. Sliding block

6. Locking nut

7. Tooth-shaped gasket

8. The RF connector

9. Other connectors

10 PCB center contact point perforation routing

11 PCB surface-mounted wiring

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are only for illustrating the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, the utility model provides a large tolerance radio frequency connector, including coaxial shell 1, insulator 2 and the inner conductor 3 that sets up, insulator 2 fixed mounting is between shell 1 and inner conductor 3. As shown in fig. 2, the inner conductor 3 includes a fixed conductor 31 and a movable conductor 32, one end of the fixed conductor 31 is provided with a sleeve 311, one end of the movable conductor 32 is slidably inserted into the sleeve 311, and a first spring 33 for providing an outward pushing force to the movable conductor 32 is provided in the sleeve 311. For convenience of description, in the following embodiments, the axial direction of the inner conductor 3 is defined as the front-rear direction, the end where the movable conductor 32 is located is the front end, and the end where the fixed conductor 31 is located is the rear end. In the present embodiment, when the movable conductor 32 moves back and forth, the first spring 33 extends and contracts in the sleeve 311, so as to achieve the axial tolerance of the inner conductor 3, and make the rf connector contact well when being connected with a circuit board, another connector or an adapter. In addition, in the present embodiment, as shown in fig. 2 and fig. 3, a sleeve 311 is disposed at the front end of the fixed conductor 31 to connect with the movable conductor 32, and in the present embodiment, two ends of the fixed conductor 31 respectively correspond to the male pin interface and the movable conductor 32, wherein a 3-slot tapered tube flap is disposed at one end corresponding to the male pin interface, and a 4-slot tapered tube flap is disposed at one end corresponding to the movable conductor 32. Of course, in other embodiments, the fixed conductor 31 may be formed with a multi-grooved tapered tube lobe at one end and a male pin or contact at the other end. The rear end connector 314 of the stationary conductor 31 in this example may be provided as a male or female connector for connection with a corresponding connector or cable connector.

In the present invention, in order to make the inner conductor 3 have better electrical performance, as shown in fig. 2 and 3, the end of the sleeve 311 is closed up into a tapered tube lobe 312, that is: the front end of the sleeve 311 is set to be a tapered tube, the tube opening gradually shrinks forward and becomes smaller, and a groove is formed along the generatrix direction of the tapered tube to form a tapered tube flap 312. When the movable conductor 32 is inserted into the sleeve 311, the tapered tube flaps 312 are elastically spread outward, so that the first circular arc surfaces 316 of the inner walls of the tapered tube flaps 312 are elastically contacted with the outer cylindrical surface of the movable conductor 32, so as to achieve better electrical contact.

Further, as shown in fig. 2 and 4, the movable conductor 32 includes a first column section 321, a second column section 322, and a third column section 323 that are integrally connected, a diameter of the first column section 321 is smaller than that of the second column section 322, the second column section 322 is axially slidably installed in the sleeve 311, the first arc surface 316 of the inner wall of the tapered tube flap 312 is in elastic contact with the outer cylindrical surface of the first column section 321, and a closed state is maintained by a pressure of the tapered tube flap 312, so that the second column section 322 is blocked, and the movable conductor 32 is prevented from sliding out of the sleeve 311. As shown in fig. 2, the elastic contact between the conical petals 312 and the first cylindrical section 321, the inner diameter of the first spring 33 and the diameter of the third cylindrical section 323 have a moderate clearance, the outer diameter of the first spring 33 and the diameter of the sleeve 311 also have a moderate clearance, and the radial clearance between the second cylindrical section 322 and the sleeve 311, allow a certain radial offset of the movable conductor 32 with respect to the fixed conductor 31, thereby achieving the radial tolerance of the inner conductor 3. The diameter of the third column section 323 is smaller than that of the second column section 322, and one end of the first spring 33 is sleeved on the third column section 323, so that the first spring 33 can be prevented from being twisted in movement, and the movable conductor 32 can be prevented from being jammed in movement. In the present embodiment, as shown in fig. 3, since the sleeve 311 of the fixed conductor 31 has a sufficient length, the movable conductor 32 has a sufficient space for axial movement, thereby achieving a large axial tolerance. As shown in fig. 3, since the sleeve 311 of the fixed conductor 31 is thin and long, the plating process through hole 318 is provided in the sleeve 311 of the fixed conductor 31 to ensure the plating of the inner wall, so that the inner wall is smoother, thereby making the movement of the movable conductor 32 smooth.

Further, the inner diameter of the tapered petals 312 before the constriction is the same as the inner diameter of the adjacent sleeve 311, and the tapered petals 312 are resilient so as to correspond to the radial deflection of the movable conductor 32. In the present invention, as shown in fig. 2, the first arc surface 316 of the inner wall of the tapered tube flap 312 is in elastic contact with the outer cylindrical surface of the first cylindrical section 321, and has only moderate elastic contact force, so that the first arc surface and the first cylindrical section are in smooth contact; there is no other clamping or barb between the two, so the structure has little abrasion, good contact and long service life, and ensures the radio frequency performance and service life of the radio frequency connector.

Preferably, as shown in fig. 4, the rear end of the second section 322 has a chamfer 326, and the chamfer 326 allows the movable conductor 32 to be inserted into the tapered tube piece 312 of the fixed conductor 31 for guiding, so as to facilitate smooth insertion into the sleeve 311 during assembly; the front end of the second post section 322 has a rounded corner 325 with a radius to prevent the movable conductor 32 from jamming at the root of the inner diameter of the closed end of the sleeve 311 during axial translation and radial deflection within the sleeve 311. The rear end of the second leg 322 of the moving conductor 32 has a stop surface 328 for stopping the first spring 33, and the first spring 33 is compressed during the backward movement of the moving conductor 32, and the first spring 33 pushes the moving conductor 32 during the forward movement, and the stop surface 328 does not deflect the spring, and prevents the moving conductor 32 from jamming during the axial translation and radial deflection in the sleeve 311.

Preferably, the first spring 33 is ground flat at both ends for better placement and translation on the sleeve 311 and less prone to tilt.

Further, as shown in fig. 2 and 4, the contact surface 327 of the movable conductor 32 is a second circular arc surface to ensure smooth contact with the PCB or other connector. As shown in fig. 1, 5 and 6, a housing 1 of a large tolerance radio frequency connector comprises a first housing 11, a second housing 12 and a third housing 13, wherein the first housing 11 and the third housing 13 are fixedly arranged at two ends of the second housing 12; as shown in fig. 7, 8, 9, and 10, the insulator 2 includes a first insulator 21, a second insulator 22, and a third insulator 23. As shown in fig. 1, the first insulator 21 is located in the annular gap between the first housing 11 and the fixed conductor 31, and is fixedly connected with the first housing 11 and the fixed conductor 31; the second insulator 22 is located in the annular gap between the second housing 12 and the fixed conductor 31, and is fixedly connected with the second housing 12; the third insulator 23 is located in the annular gap between the third housing 13 and the movable conductor 32, and is fixedly connected with the third housing 13, and the central hole of the third insulator 23 is in clearance sliding fit with the movable conductor 32. In the present embodiment, as shown in fig. 1 and 5, the first housing 11 and the third housing 13 are fixedly mounted at two ends of the second housing 12 by interference fit to be connected into a whole, and a first step 112 is formed at a connection portion of the first housing 11 and the second housing 12, and a second step 124 is formed at a connection portion of the second housing 12 and the third housing 13. In this embodiment, the first shell 11 is provided with a first barb 111, and when the first insulator 21 is assembled into the first shell 11 from back to front, the first barb 111 is clamped and fixed with the outer wall of the first insulator 21; the first insulator 21 is fixedly connected with the first shell 11; the second shell 12 is provided with a second barb 123, when the second insulator 22 is assembled into the second shell 12 from back to front, the second barb 123 is clamped and fixed on the outer wall of the second insulator 22, so that the second insulator 22 is fixedly connected with the second shell 12, the rear end face of the second insulator 22 is limited at the first step 112 at the joint of the first shell 11 and the second shell 12, and the first insulator 21 and the second insulator 22 are assembled in a step shape, so that the first insulator 21 and the second insulator 22 are prevented from moving back and forth; be equipped with third barb 132 on the third shell 13, when assembling third insulator 23 into third shell 13 from back to front, third barb 132 and the joint of third insulator 23 outer wall realize the fixed connection of third insulator 23 and third shell 13, and third insulator 23 periphery personally submits the step form and cooperatees with the second step 124 of second shell 12 and third shell 13 junction, prevent that third insulator 23 backward moves. As shown in fig. 3, a fourth barb 313 is provided on the fixed conductor 31, and during assembly, the fixed conductor 31 passes through the first insulator 21 and the second insulator 22 from front to back, and the fourth barb 313 is fixed to the inner wall of the first insulator 21 in a clamping manner, so as to realize the fixed connection between the fixed conductor 31 and the first insulator 21.

In addition, in the present embodiment, as shown in fig. 7, the outer cylindrical surface of the first insulator 21 has a circle of grooves 211 for rf impedance matching; as shown in fig. 8 and 9, through holes 221 uniformly distributed in the circumferential direction are provided on the end surface of the second insulator 22 for rf impedance matching. Preferably, as shown in fig. 10, the central hole of the third insulator 23 is a stepped hole, and includes a first hole segment 231, a second hole segment 232, and a third hole segment 233, which are connected in sequence; wherein the inner diameter of the first hole section 231 is slightly larger than the diameter of the second section 322 on the movable conductor 32, the inner diameter of the second hole section 232 is slightly larger than the diameter of the first column section 321 and slightly smaller than the diameter of the second section 322, the inner diameter of the third hole section 233 is larger than the sleeve outer diameter 317 of the fixed conductor 31, and the tapered tube flap 312 of the fixed conductor 31 is partially positioned in the third hole section 233. During assembly, as shown in fig. 1, the movable conductor 32 passes through the central hole of the third insulator 23 from front to back, and although the inner diameter of the second hole section 232 is slightly smaller than the diameter of the second section 322, the insulator is made of polymer material and has certain deformability, and the chamfer 326 at the rear end of the second section 322 facilitates the insertion of the second section 322 of the movable conductor 32 into and through the second hole section 232 of the third insulator 23. As shown in fig. 4 and 10, during assembly, the chamfer 326 enters the first hole section 231, and the second hole section 232 is expanded under the action of the pushing force of the back pressing so as to pass through the second section 322 of the movable conductor 32; the second bore section 232 of the third insulator 23 then returns to its original size so that the movable conductor 32 cannot automatically exit the second bore section 232 of the third insulator 23; the first spring 33 cannot be withdrawn even if it is subsequently pushed by the pushing force, because the pushing force of the first spring 33 is designed to be smaller than the force of forcibly pressing the movable conductor. The movable conductor 32 does not come back out in normal use. In addition, as shown in fig. 1, since the inner diameters of the first hole section 231 and the second hole section 232 are slightly larger than the diameter of the first column section 321, the central hole of the third insulator 23 and the movable conductor 32 can realize a clearance sliding fit, but at the same time, the radial offset of the movable conductor 32 is limited not to be too large, so that the conical tube flap 312 is protected from being split. The inner diameter of the third hole section 233 of the third insulator 23 is slightly larger than the outer diameter of the tapered tube flap 312 that is expanded during the moving process of the movable conductor 32, and besides the function of radio frequency matching, the third hole section also has the function of protecting the tapered tube flap 312 from being split during the moving and radial offset of the movable conductor 32. Based on this, in the embodiment shown in fig. 1, the diameter of the second hole section 232 of the third insulator 23 is slightly larger than the diameter of the first column section 321 and smaller than the diameter of the second column section 322, which ensures that the movable conductor 32 slides smoothly and is not easy to fall off.

In the present invention, as shown in fig. 1, fig. 2 and fig. 4, the end of the first column section 321 is further connected to a nose section 324, the diameter of the nose section 324 is greater than the inner diameter of the first hole section 231, when the movable conductor 32 is pressed backward from the front, because the inner diameter of the first hole section 231 of the third insulator 23 is smaller than the diameter of the nose section 324, the sliding range of the movable conductor 32 is limited, thereby protecting the first spring 33 from being excessively pressed, and prolonging the life of the first spring 33.

In this embodiment, as shown in fig. 1 and 5, the third housing 13 of the rf connector has a bevel lead-in end at the inlet thereof, which is adapted to be in contact with and mate with a corresponding coaxial connector or adaptor insertion bevel, and the connection is as shown in fig. 14A and 14B. The third housing 13 of the rf connector is mated with a perforated strip line on the PCB center contact in the manner shown in fig. 15. Of course, in other embodiments, the third housing 13 has no bevel lead-in, but has a slot on one side of the bottom for connecting with the transmission line on the PCB, as shown in fig. 16A and 16B.

Further, as shown in fig. 1 and fig. 11, the large-tolerance rf connector of the present invention further includes an outer sleeve 4 slidably sleeved on the second housing 12; the outer sleeve 4 comprises a first convex ring 41, the second shell 12 comprises a first stop ring 121 for stopping the first convex ring 41, and the third shell 13 is provided with a second stop ring 131; the first protruding ring 41 is located between the first stopper ring 121 and the second stopper ring 131, and a second spring 42 is provided between the first protruding ring 41 and the second stopper ring 131. In this embodiment, when the outer sleeve 4 moves back and forth, the second spring 42 extends and contracts between the first convex ring 41 and the second stop ring 131, so as to realize the front and back axial movement of the radio frequency connector, thereby ensuring that the radio frequency connector has axial tolerance, and ensuring that the radio frequency connector is in good contact with a connector or an adapter or a PCB which is butted with the radio frequency connector; secondly, the second spring 42 has a self-guide function, so that the radio frequency connector can be automatically restored to the initial position parallel to the axial direction after being disconnected from the butting piece, and the second butting is facilitated. In addition, in this embodiment, the two ends of the first spring 33 and the second spring 42 are ground flat, so that the springs are kept stable, do not deviate and do not jam in the contact process. The second collar 131 also limits the end of the second spring 42 from deflecting out. As shown in fig. 1 and 11, the large-tolerance radio frequency connector is sleeved with the movable outer sleeve 4, and the outer sleeve 4 can only translate within the designed axial range of the housing 1 and radially deflect in the reserved gaps of the inner diameter of the outer sleeve 4, the second spring 42 and the outer diameter of the second housing 12; there may also be an angular deflection between the outer sleeve 4 and the housing 1. The inner diameter of the second spring 42 and the outer diameter of the second housing 12, the outer diameter of the second spring 42 having a clearance with the inner diameter of the outer sleeve 4; therefore, the housing 1 and the outer sleeve 4 of the radio frequency connector have certain axial tolerance and radial tolerance.

Further, as shown in fig. 1, 11, 12 and 13, the large-tolerance rf connector of the present invention further includes a sliding block 5 fixedly installed in the outer sleeve 4, and the second housing 12 further includes an axial sliding slot 122; the slide block 5 is slidably engaged with the slide groove 122. The conventional rf connector is easy to rotate during use, especially in the case of a cable extending from the rear of the first housing 11, the cable twisting force may cause the rf connector to deviate from the mating connector or PCB during use, which may result in incorrect connection and increased insertion loss. As shown in fig. 5, in the present embodiment, the second housing 12 includes two axial runners 122, 180 circumferentially distributed thereon; as shown in fig. 12 and 13, two sliding blocks 5 corresponding to the sliding slots 122 are fixedly mounted on the outer sleeve 4, so that no relative rotation between the outer sleeve 4 and the housing 1 is realized, as shown in fig. 12. The sliding block 5 of the radio frequency connector is a pin and is connected with the outer sleeve 4 into a whole in an interference fit way; through the axial sliding of the pin in the sliding groove 122, due to the limitation of the two sides of the sliding groove 122, the outer sleeve 4 can only axially slide but cannot rotate relative to the second housing 12, so that the connection with the butting connector, the adapter and the PCB is prevented from being disconnected due to torsion, a correct test result cannot be obtained, meanwhile, the connection friction between the radio frequency connector and other connectors, adapters or PCBs is reduced, and the service life is greatly prolonged. Of course, in other embodiments, three or four axial sliding grooves may be provided on the second housing 12, and a corresponding number of sliding blocks 5 are fixedly mounted on the outer sleeve 4. Therefore, the number of the axial sliding grooves 122 on the second housing 12 and the number of the sliding blocks 5 on the outer sleeve 4 can be set according to actual specific requirements. At the bottom of the pin and the sliding groove, the inner diameter of the first convex ring 41 and the outer diameter of the first retaining ring 121 of the second housing 12, and the outer diameter of the first retaining ring 121 of the second housing 12 and the inner diameter of the outer sleeve 4 are all provided with gaps, so that the radio frequency connector is ensured to have certain axial tolerance and radial tolerance.

As shown in fig. 5 and 6, the axial length of the slide groove 122 limits the range of axial tolerances of the housing 1, and also prevents the risk of the second spring 42 being excessively compressed, increasing the service life of the rf connector. In this embodiment, the two ends of the sliding slot 122 are semicircular, corresponding to the shape of the pin, and are also smooth and not jammed in the limit.

Further, the large-tolerance rf connector of the present invention may further need to be fixed on the panel of the supporting fixture, and based on this, in the embodiment shown in fig. 1, the outer cylindrical surface of the outer sleeve 4 of the large-tolerance rf connector is provided with external threads and is matched with a locking nut 6, and one end of the outer sleeve 4 is provided with a limiting boss 43; through lock nut 6 and external screw thread fit for lock nut 6 can rotate on outer sleeve 4, and with the cooperation of spacing boss 43, fix the high tolerance radio frequency connector on the supporting jig panel. Preferably, a tooth-shaped washer 7 is arranged between the locking nut 6 and the limiting boss 43, which is more beneficial to locking. In addition, as shown in fig. 13, the outer cylindrical surface of the outer sleeve 4 is D-shaped, that is, a plane is cut on the complete cylindrical surface provided with the external thread to form a D-shaped cross section, and the D-shaped cross section is matched with the D-shaped through hole on the panel of the supporting clamp, so that the large-tolerance radio frequency connector is further ensured to be free from rotation.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be considered as the protection scope of the present invention.

Claims (10)

1. The utility model provides a large-tolerance radio frequency connector, includes shell (1), insulator (2) and inner conductor (3) of coaxial setting, insulator (2) fixed mounting be in shell (1) with between inner conductor (3), its characterized in that, inner conductor (3) include a fixed conductor (31) and a movable conductor (32), the one end of fixed conductor (31) is equipped with sleeve pipe (311), and the one end slidable of movable conductor (32) inserts in sleeve pipe (311), be equipped with first spring (33) that provide outside thrust to movable conductor (32) in sleeve pipe (311), the tip binding off of sleeve pipe (311) is toper tube lamella (312), toper tube lamella (312) and the outer cylindrical surface elastic contact of movable conductor (32).

2. The high tolerance radio frequency connector according to claim 1, wherein the movable conductor (32) comprises a first cylindrical section (321), a second cylindrical section (322) and a third cylindrical section (323) which are integrally connected, the first cylindrical section (321) has a smaller diameter than the second cylindrical section (322), the second cylindrical section (322) is axially slidably mounted in the sleeve (311), and the tapered tube flap (312) is in elastic contact with an outer cylindrical surface of the first cylindrical section (321); the diameter of the third column section (323) is smaller than that of the second column section (322), and one end of the first spring (33) is sleeved on the third column section (323).

3. The high tolerance radio frequency connector according to claim 1, wherein the tapered lobes (312) of the sleeve (311) inner side further includes a first radiused surface (316).

4. The high tolerance radio frequency connector according to claim 2, wherein the housing (1) comprises a first housing (11), a second housing (12) and a third housing (13), the first housing (11) and the third housing (13) being fixedly mounted at both ends of the second housing (12); the insulator (2) comprises a first insulator (21), a second insulator (22) and a third insulator (23); the first insulator (21) is positioned in an annular gap between the first shell (11) and the fixed conductor (31) and is fixedly connected with the first shell (11) and the fixed conductor (31); the second insulator (22) is positioned in an annular gap between the second shell (12) and the fixed conductor (31) and is fixedly connected with the second shell (12); the third insulator (23) is positioned in an annular gap between the third shell (13) and the movable conductor (32) and is fixedly connected with the third shell (13), and a center hole of the third insulator (23) is in clearance sliding fit with the movable conductor (32).

5. The high tolerance radio frequency connector according to claim 4, wherein the third insulator (23) central hole is a stepped hole and comprises a first hole section (231), a second hole section (232) and a third hole section (233) which are connected in sequence, wherein the inner diameter of the first hole section (231) is slightly larger than the diameter of the second column section (322), and the inner diameter of the second hole section (232) is slightly larger than the diameter of the first column section (321) and slightly smaller than the diameter of the second column section (322); the third bore section (233) has an inner diameter greater than the sleeve outer diameter (317) of the stationary conductor (31), and the tapered petals (312) of the stationary conductor (31) are partially disposed within the third bore section (233).

6. The high tolerance radio frequency connector according to claim 5, wherein the end of the first post segment (321) is further connected to a male segment (324); the diameter of the convex head section (324) is larger than the inner diameter of the first hole section (231), and a contact surface (327) at the end part of the convex head section (324) is a second circular arc surface.

7. The high tolerance radio frequency connector according to claim 4, further comprising an outer sleeve (4) slidably fitted over the second housing (12); a first convex ring (41) is arranged on the inner wall of the outer sleeve (4), the second shell (12) comprises a first stop ring (121) for stopping the first convex ring (41), and a second stop ring (131) is arranged on the third shell (13); the first convex ring (41) is positioned between the first stop ring (121) and the second stop ring (131), and a second spring (42) is arranged between the first convex ring (41) and the second stop ring (131).

8. The high tolerance radio frequency connector according to claim 7, further comprising a sliding block (5) fixedly mounted in the outer sleeve (4), the second housing (12) further comprising an axial sliding slot (122); the sliding block (5) is in sliding fit with the sliding groove (122).

9. The high tolerance radio frequency connector according to claim 7, wherein the outer cylindrical surface of the outer sleeve (4) is provided with external threads and is matched with a locking nut (6), and one end of the outer sleeve (4) is provided with a limiting boss (43); the outer cylindrical surface of the outer sleeve (4) is D-shaped.

10. The high tolerance radio frequency connector according to claim 7, wherein the outer sleeve (4) further comprises a tooth washer (7) that mates with the lock nut (6).

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