Floating radio frequency connector

Abstract

The utility model provides a floating radio frequency connector, and belongs to the field of connecting devices. The floating radio frequency connector comprises a fixed insulator, a floating insulator and an inner conductor structure, the inner conductor structure comprises a fixed inner conductor fixedly arranged in the fixed insulator and a floating inner conductor fixedly arranged in the floating insulator, one end of the floating inner conductor is provided with a matching structure, and one end of the fixed inner conductor is provided with a welding pin. One of the floating inner conductor and the fixed inner conductor is provided with a circular matching hole, and the other one is provided with a ball head structure which is assembled in the matching hole and is in close contact with the hole wall of the matching hole. According to the utility model, the ball head structure is utilized to conduct electricity between the floating inner conductor and the fixed inner conductor, so that reliable conductive connection can be ensured, and the phenomenon that the welding feet are stripped due to the fact that acting force is transmitted to the welding feet when the floating inner conductor deflects is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of connecting device, especially, relate to a floating radio frequency connector. BACKGROUND

[0002] The radio frequency connector is a connector for transmitting radio frequency signals, and is often used for connecting between substrates or between radio frequency modules and substrates, for example, through the radio frequency connector for connecting between vehicle-mounted camera module substrates. Due to installation errors, the radio frequency connector is prone to axial position deviation and radial position deviation, resulting in that the radio frequency connector cannot work normally, and even fails.

[0003] The Chinese utility model patent with the authorization announcement number CN220107066U discloses a floating radio frequency connector, which solves the above problems by using a floating structure. The floating radio frequency connector includes a fixed outer conductor, a floating outer conductor, a floating insulator, a floating inner conductor and a fixed insulator, the lower end of the floating outer conductor is provided with a floating head capable of elastically and constantly abutting against the inner wall of the fixed outer conductor, and the upper end of the fixed outer conductor is a necked structure to prevent the floating outer conductor from being separated axially. The upper end of the floating outer conductor is guided and matched with the matching connector on the opposite end of the connector, so that the angle deviation of the floating outer conductor is realized, and the connector is conveniently and quickly plugged and connected; the terminal pin of the floating inner conductor is bent and extended to form an elastic arm structure, the part between the main body of the floating inner conductor and the terminal pin is a deformation part, the main body of the floating inner conductor can be deviated with the floating insulator, the installation error of the connector is eliminated, and the accurate connection of the connector is facilitated.

[0004] However, in the above-mentioned floating radio frequency connector, the floating outer conductor and the floating insulator will drive the upper end of the floating inner conductor to deviate during the deviation process, but the terminal pin of the floating inner conductor does not deviate, so that the floating inner conductor will be deformed at the deformation part. Moreover, the floating inner conductor has poor elasticity in the direction within the range of 45° of the normal direction of the bending forming direction of the terminal pin and the normal direction, so that the expected free deviation cannot be realized. When the matching connector has deviation in these directions, the floating inner conductor will be plastically deformed, and fatigue fracture may occur over a long period of time. In addition, during the deviation process of the upper part of the above-mentioned floating inner conductor, the floating inner conductor will transmit the force to the surface mount solder joint between the terminal pin and the upper surface of the substrate, so that a large stress is generated at the surface mount solder joint, resulting in that the sensor on the substrate is deformed and affects the normal work of the sensor. In severe cases, the terminal pin will also be peeled off from the substrate, resulting in that the connector fails. UTILITY MODEL CONTENTS

[0005] The purpose of this utility model is to provide a floating radio frequency connector to solve the technical problems of fatigue fracture caused by plastic deformation in certain directions when the upper part of the floating inner conductor of the existing floating radio frequency connector swings, and the technical problems of the floating inner conductor swinging and transferring the force to the terminal solder pin, causing the terminal solder pin to peel off.

[0006] To achieve the above objectives, the technical solution of the floating radio frequency connector provided by this utility model is as follows:

[0007] A floating radio frequency connector includes a fixed insulator, a floating insulator, and an inner conductor structure. The inner conductor structure includes a fixed inner conductor fixedly disposed on the fixed insulator and a floating inner conductor fixedly disposed on the floating insulator. The end of the floating inner conductor away from the fixed inner conductor is provided with a mating structure for mating with the inner conductor of an adapter connector. The fixed inner conductor is provided with solder feet for soldering and fixing to a substrate. One of the floating inner conductor and the fixed inner conductor is provided with a circular mating hole, and the other is provided with a ball head structure fitted into the mating hole. The ball head structure is in close contact with the hole wall of the mating hole. One of the ball head structure and the hole wall of the mating hole is provided with a slot for dividing it into at least two halves so that it can expand and contract radially.

[0008] As a further improvement, the fixed inner conductor includes a cylinder, with the welding foot located at one end of the cylinder along its axial direction, and the central hole of the cylinder forming a mating hole.

[0009] As a further improvement, the fixed inner conductor and the fixed insulator are integrally cast.

[0010] As a further improvement, an axial through-hole is provided on the fixed insulator, and the cylinder is interference-fitted into the assembly hole. The end of the fixed insulator away from the floating insulator is provided with a channel for the welding foot to extend radially out of the fixed outer conductor.

[0011] As a further improvement, the floating insulator is provided with a mounting hole for mounting the floating inner conductor through the axial direction. The mounting hole includes a small diameter section and a large diameter section, and a stepped structure is formed between the small diameter section and the large diameter section. The floating inner conductor is fixedly connected to the small diameter section of the mounting hole, and the floating inner conductor is provided with a stop protrusion for axial stop engagement with the stepped structure.

[0012] As a further improvement, the floating inner conductor is a cylindrical structure formed by rolling a sheet metal, with the stop protrusion located at the joint of the floating inner conductor.

[0013] As a further improvement, the ball head structure is located on the floating inner conductor, the floating inner conductor comprises a main body part and a connecting part, the fitting structure is located at one axial end of the main body part, the connecting part is located at the other axial end of the main body part, the ball head structure is located at one end of the connecting part away from the main body part, and the slot is arranged on the ball head structure and extends to the connecting part in the axial direction.

[0014] As a further improvement, the floating insulator is provided with a mounting hole for mounting the floating inner conductor in the axial direction, the mounting hole comprises a small-diameter section and a large-diameter section, a step structure is formed between the small-diameter section and the large-diameter section, the main body part of the floating inner conductor is fixedly connected with the small-diameter section of the mounting hole, and a stop protrusion for stopping cooperation with the step structure in the axial direction is arranged at the connecting position of the main body part and the connecting part.

[0015] As a further improvement, the stop protrusion is formed by outwardly folding the part between the two adjacent petals of the connecting part.

[0016] As a further improvement, the radial dimension of the connecting part is smaller than the radial dimension of the main body part.

[0017] The beneficial effect is that the floating radio frequency connector is an improvement on the prior art. The inner conductor structure of the floating radio frequency connector is composed of a split floating inner conductor and a fixed inner conductor, and one of the floating inner conductor and the fixed inner conductor is electrically connected through the ball head structure assembled in the fitting hole of the other, so that no matter which direction the floating inner conductor swings, good electrically conductive connection can be formed between the floating inner conductor and the fixed inner conductor. Moreover, the structure of the above-mentioned electrically connected structure does not transmit force during the swinging of the floating inner conductor, so that the soldering leg can be prevented from being peeled off from the substrate due to large stress. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the floating radio frequency connector embodiment 1 in the utility model;

[0019] Figure 2 It is an explosion view of the floating radio frequency connector embodiment 1 in the utility model;

[0020] Figure 3 It is a sectional view of the floating radio frequency connector embodiment 1 in the utility model;

[0021] Figure 4 It is a structure schematic view of the fixed outer conductor in the floating radio frequency connector embodiment 1 in the utility model;

[0022] Figure 5 It is a structure schematic view of the fixed insulator in the floating radio frequency connector embodiment 1 in the utility model;

[0023] Figure 6It is a structure schematic view of the floating outer conductor in the floating radio frequency connector embodiment 1 of the utility model.

[0024] Figure 7 It is a structure schematic view of the floating insulator in the floating radio frequency connector embodiment 1 of the utility model.

[0025] Figure 8 It is a structure schematic view of the floating inner conductor in the floating radio frequency connector embodiment 1 of the utility model.

[0026] Figure 9 It is a structure schematic view of the fixed inner conductor in the floating radio frequency connector embodiment 1 of the utility model.

[0027] Figure 10 It is a state diagram when the floating radio frequency connector embodiment 1 of the utility model is matched with the adapter connector.

[0028] Figure 11 It is a state diagram when the floating inner conductor of the floating radio frequency connector embodiment 1 of the utility model is guided.

[0029] Mark explanation:

[0030] 1, fixed outer conductor; 11, outer conductor welding leg; 12, necking structure; 13, inner convex structure; 14, slot; 2, fixed insulator; 21, convex part; 22, concave part; 23, assembly hole; 24, passageway; 3, floating outer conductor; 31, elastic arm contact finger; 4, floating insulator; 41, mounting hole; 42, step structure; 43, spherical surface; 5, fixed inner conductor; 51, cylinder; 52, welding leg; 53, matching hole; 6, floating inner conductor; 61, main body part; 62, matching structure; 63, connecting part; 64, ball head structure; 65, stop protrusion; 7, adapter connector; 71, pin. Specific implementation

[0031] The utility model will be described in further detail in connection with the following embodiments.

[0032] To solve the problems in the prior art, the basic concept of the utility model is to divide the inner conductor structure into a floating inner conductor and a fixed inner conductor, and to realize electrically conductive connection between the two by using a ball head structure.

[0033] The specific embodiment 1 of the floating radio frequency connector provided by the utility model:

[0034] A floating radio frequency connector, referring to the drawings, Figure 1 , the drawings, Figure 2 and the drawings, Figure 3 , comprising a fixed outer conductor 1, a fixed insulator 2, a floating outer conductor 3, a floating insulator 4 and an inner conductor structure, the inner conductor structure comprising a fixed inner conductor 5 and a floating inner conductor 6 arranged separately.

[0035] Referring to the drawings Figure 4 The fixed outer conductor 1 is in a cylindrical structure, and an axial end thereof is provided with an outer conductor soldering leg 52 for soldering with a substrate, and the other axial end thereof is in a necked structure 12. The fixed insulator 2 is arranged inside the fixed outer conductor 1, and referring to the drawings Figure 5 The circumferential side of the fixed insulator 2 is provided with two protruding structures, and the fixed insulator 2 is fixedly arranged in the fixed outer conductor 1 through the two protruding structures. The fixed insulator 2 is provided with a radially protruding protruding portion 21, and the end of the fixed outer conductor 1 connected with the substrate is provided with a slot 14 for the protruding portion 21 to extend out, and the fixed insulator 2 is further provided with a groove-shaped recessed portion 22, the bottom surface of the recessed portion 22 forms a table surface perpendicular to the axial direction and facing away from the substrate, and the fixed outer conductor 1 is provided with an inward protruding inner protruding structure 13 axially abutting with the bottom surface of the recessed portion 22, the inner protruding structure 13 is a spring arm formed on the fixed outer conductor 1. The protruding portion 21 and the recessed portion 22 on the fixed insulator 2 can press the fixed insulator 2 on the substrate in the axial direction, so as to ensure the stability of the fixed insulator 2.

[0036] Referring to the drawings Figure 6 The axial ends of the floating outer conductor 3 are both provided with a plurality of slots, so that the axial ends of the floating outer conductor 3 form a plurality of spring arm contact fingers 31, and the spring arm contact fingers 31 are bent to make the axial ends of the floating outer conductor 3 bulge to form ball heads. One ball head of the floating outer conductor 3 is located in the fixed outer conductor 1, and each spring arm contact finger 31 of the ball head is in constant abutting contact with the inner wall of the fixed outer conductor 1, and the ball head can rotate in the fixed outer conductor 1, so that the floating outer conductor 3 can deflect relative to the fixed outer conductor 1, and further make the floating outer conductor 3 have a floating amount in the radial direction. The ball head of the floating outer conductor 3 located in the fixed outer conductor 1 has a certain amount of movement in the axial direction of the fixed outer conductor 1, so that the fixed outer conductor 1 also has a floating amount in the axial direction, and the necked structure 12 of the fixed outer conductor 1 can prevent the floating outer conductor 3 from being separated in the axial direction, so the necked structure 12 also constitutes an axial limiting structure. The other ball head of the floating outer conductor 3 can be matched with the adapter connector 7, and plays a role of guiding the deflection of the floating outer conductor 3 during plugging.

[0037] The floating insulator 4 is located in the floating outer conductor 3, and referring to the drawings Figure 7 The circumferential side of the floating insulator 4 is also provided with a protruding structure, and the floating insulator 4 is fixedly arranged in the floating outer conductor 3 through the protruding structure. The end of the floating insulator 4 facing the fixed insulator 2 is provided with a spherical surface 43, so that after the end of the floating insulator 4 abuts against the axial end surface of the fixed insulator 2, the floating insulator 4 can also smoothly deflect.

[0038] Referring to the drawings Figure 7 and in combination with the drawings Figure 3The mounting hole 41 is provided on the floating insulator 4 along the axial direction, and the floating inner conductor 6 is fixedly installed in the mounting hole 41. Figure 8 The floating inner conductor 6 comprises a main body part 61 and a connecting part 63. The axial one end of the main body part 61 is provided with a matching structure 62 for plug-in matching with the inner conductor of the adapter connector 7. The matching structure 62 is a plug hole matched with the plug pin 71 on the adapter connector 7. In other embodiments, the plug hole can be provided on the adapter connector 7, and the matching structure 62 is the plug pin 71.

[0039] The connecting part 63 is located at the one end of the main body part 61 away from the matching structure 62. The one end of the connecting part 63 away from the main body part 61 is provided with a ball head structure 64. The ball head structure 64 is provided with a slot for dividing the ball head structure 64 into two parts. The slot extends to the position where the connecting part 63 is connected with the main body part 61, so as to divide the connecting part 63 into two parts. After the connecting part 63 is divided into two parts, each part forms a cantilever structure with elasticity, so that each part of the ball head structure 64 can expand or contract radially.

[0040] Referring to Fig. 2, Figure 3 The mounting hole 41 is a stepped hole with a large diameter section and a small diameter section. The large diameter section is located at the one end of the small diameter section close to the fixed insulator 2. The stepped structure 42 is formed between the large diameter section and the small diameter section. The main body part 61 of the floating inner conductor 6 is located in the small diameter section. The main body part 61 is provided with a protruding structure, and the main body part 61 is fixedly installed in the small diameter section of the mounting hole 41 through the protruding structure.

[0041] The floating inner conductor 6 is provided with a stop protrusion 65 for axially stopping matching with the stepped structure 42. In this embodiment, the floating inner conductor 6 is a cylindrical structure formed by rolling a plate. The stop protrusion 65 is formed by outwardly folding the protruding part of the rolling joint of the cylindrical structure. In this embodiment, the stop protrusion 65 is provided on both sides of the joint.

[0042] The stop matching of the stop protrusion 65 with the stepped structure 42 in the axial direction can facilitate the positioning of the floating inner conductor 6 during the assembly of the floating inner conductor 6, and can prevent the floating inner conductor 6 from being pulled out radially during use. The stop protrusion 65 is provided at the joint, which can facilitate the processing of the floating inner conductor 6 by stamping the plate.

[0043] The connecting part 63 of each part is connected with the main body part 61, and the distance between the root of each part of the connecting part 63 is large due to the stop protrusion 65. In this embodiment, each part of the connecting part 63 is inwardly bent from the root, so as to shorten the distance between each part of the connecting part 63. Thus, the radial dimension of the connecting part 63 is smaller than the radial dimension of the main body part 61, which can avoid the ball head structure 64 being too large.

[0044] See the accompanying drawings Figure 9 And in conjunction with the accompanying drawings Figure 3 The fixed inner conductor 5 is fixedly connected with the fixed insulator 2 by integral casting, the fixed inner conductor 5 comprises a cylinder body 51 and a welding leg 52 located at one end of the cylinder body 51 away from the floating inner conductor 6 in the axial direction, the cylinder body 51 penetrates the fixed insulator 2 in the axial direction, and the welding leg 52 extends out of the fixed insulator 2 in the radial direction away from the floating insulator 4 and the fixed outer conductor 1. In the process of casting the fixed insulator 2, the fixed insulator 2 forms an assembly hole 23 at the position of the cylinder body 51. The fixed insulator 2 is provided with a channel 24 for the welding leg 52 to extend out, and the channel 24 corresponds to the protrusion 21 on the fixed insulator 2, so that the fixed outer conductor 1 does not need to be further drilled. Since the fixed inner conductor 5 is small, it can be conveniently welded with the substrate after being fixedly connected with the fixed insulator 2.

[0045] The ball head structure 64 of the floating inner conductor 6 is assembled in the center hole of the cylinder body 51 and forms a constant abutment state with the hole wall of the center hole, and the center hole of the cylinder body 51 constitutes a matching hole 53. The matching hole 53 can be a through hole or a blind hole.

[0046] In use, see the accompanying drawings Figure 10 And the accompanying drawings Figure 11 If there is a deviation in the position of the adapter connector 7, the floating outer conductor 3 will adaptively yaw after the adapter connector 7 contacts the ball head, until the jack on the contact body is aligned with the pin 71 on the adapter connector 7, to ensure that the conductive plugging is successfully completed.

[0047] In the process of yawing of the floating outer conductor 3, the floating insulator 4 and the floating inner conductor 6, no matter which direction the floating inner conductor 6 yaws, the ball head structure 64 of the floating inner conductor 6 can always stably contact and conduct with the cylinder body 51 of the fixed inner conductor 5, and no disconnection problem occurs, and has a long service life; and no force is transmitted between the floating inner conductor 6 and the fixed inner conductor 5, so no matter which direction the floating inner conductor 6 yaws, there is no stress at the connection position of the welding leg 52 and the substrate, to ensure the connection reliability between the welding leg 52 and the substrate.

[0048] The specific embodiment 2 of the floating radio frequency connector provided by the utility model:

[0049] The difference between this embodiment and the embodiment 1 is that the connecting part and the ball head structure are located on the fixed inner conductor, and the matching hole is located on the floating inner conductor.

[0050] Specifically, the connecting part is connected at one end of the cylinder body away from the welding leg, the inner hole of the main body part of the floating inner conductor constitutes the matching hole, and the ball head is assembled in the inner hole of the main body part of the floating inner conductor in an interference fit.

[0051] The stop protrusion in this embodiment can be formed by opening a U-shaped groove on the sidewall of the floating inner conductor, and then folding the portion surrounded by the U-shaped groove outward, thereby forming the stop protrusion.

[0052] The principle of this embodiment is similar to that of embodiment 1, and will not be repeated here.

[0053] Specific embodiment 3 of the floating radio frequency connector provided by the utility model:

[0054] This embodiment is based on embodiment 1, and differs from embodiment 1 in that the fixed insulator and the fixed inner conductor are in a split structure in this embodiment, the fixed insulator is provided with an assembly hole penetrating in the axial direction, and the cylinder is assembled in the assembly hole in an interference fit, and a protruding structure can be provided on the cylinder to improve the assembly strength.

[0055] Specific embodiment 4 of the floating radio frequency connector provided by the utility model:

[0056] This embodiment is based on embodiment 1, and differs from embodiment 1 in that the slot on the ball head structure does not extend to the connecting portion in this embodiment, and the opening on the ball head structure only extends to the connecting position of the ball head structure and the connecting portion. The outer diameter of the connecting portion is equal to the outer diameter of the main body portion in this embodiment, so the ball head structure is larger than that of embodiment 1.

[0057] Specific embodiment 5 of the floating radio frequency connector provided by the utility model:

[0058] This embodiment is based on embodiment 1, and differs from embodiment 1 in that the floating inner conductor is integrally cast in the floating insulator in this embodiment, and the stop protrusion is no longer needed on the floating inner conductor in this embodiment.

[0059] Specific embodiment 6 of the floating radio frequency connector provided by the utility model:

[0060] This embodiment is based on embodiment 1, and differs from embodiment 1 in that the stop protrusion is located at the connecting position of the main body portion and the connecting portion in this embodiment, and the stop protrusion is formed by folding outward the portion between the two adjacent petals of the connecting portion.

[0061] Specific embodiment 7 of the floating radio frequency connector provided by the utility model:

[0062] The embodiment is based on the embodiment 1, and different from the embodiment 1 is that the ball head structure is no longer provided with a slot in the embodiment, the ball head structure is a whole structure, and the upper end of the cylinder body for fixing the inner conductor is provided with a slot, so that the upper end of the cylinder body is divided into two petals, after the ball head structure is installed into the cylinder body, the upper end of the cylinder body is elastically expanded by the ball head structure, so that the ball head structure is tightly contacted with the hole wall of the matching hole of the cylinder body.

[0063] Finally, it needs to be explained that the above-mentioned is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, for the person skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified without paying creative labor, or part of the technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A floating radio frequency connector, comprising a fixed insulator (2), a floating insulator (4), and an inner conductor structure, characterized in that, The inner conductor structure includes a fixed inner conductor (5) fixedly disposed on a fixed insulator (2) and a floating inner conductor (6) fixedly disposed on a floating insulator (4). The floating inner conductor (6) is provided with a mating structure (62) at one end away from the fixed inner conductor (5) for mating with the inner conductor of the adapter connector (7). The fixed inner conductor (5) is provided with a solder foot (52) for soldering and fixing to the substrate. One of the floating inner conductor (6) and the fixed inner conductor (5) is provided with a circular mating hole (53), and the other is provided with a ball head structure (64) assembled in the mating hole (53). The ball head structure (64) is in close contact with the hole wall of the mating hole (53). One of the ball head structure (64) and the hole wall of the mating hole (53) is provided with a slot for dividing it into at least two halves so that it can expand and contract radially.

2. The floating RF connector according to claim 1, characterized in that, The fixed inner conductor (5) includes a cylinder (51), a welding foot (52) located at one end of the cylinder (51) in the axial direction, and the central hole of the cylinder (51) forms a mating hole (53).

3. The floating RF connector according to claim 1 or 2, characterized in that, The fixed inner conductor (5) and the fixed insulator (2) are integrally cast.

4. The floating radio frequency connector according to claim 2, characterized in that, The fixed insulator (2) has an axially through-hole (23) and the cylinder (51) is interference-fitted into the assembly hole (23). The fixed insulator (2) has a channel (24) at the end away from the floating insulator (4) for the welding foot (52) to extend radially out of the fixed outer conductor (1).

5. The floating RF connector according to claim 1, 2, or 4, characterized in that, The floating insulator (4) has an axially extending mounting hole (41) for mounting the floating inner conductor (6). The mounting hole (41) includes a small diameter section and a large diameter section. A stepped structure (42) is formed between the small diameter section and the large diameter section. The floating inner conductor (6) is fixedly connected to the small diameter section of the mounting hole (41). The floating inner conductor (6) is provided with a stop protrusion (65) for axially stopping and cooperating with the stepped structure (42).

6. The floating RF connector according to claim 5, characterized in that, The floating inner conductor (6) is a cylindrical structure formed by rolling a sheet metal, and the stop protrusion (65) is located at the rolling joint of the floating inner conductor (6).

7. The floating RF connector according to claim 1, 2, or 4, characterized in that, The ball head structure (64) is located on the floating inner conductor (6), which includes a main body (61) and a connecting part (63). The mating structure (62) is located at one axial end of the main body (61), and the connecting part (63) is located at the other axial end of the main body (61). The ball head structure (64) is located at the end of the connecting part (63) away from the main body (61). The slot is provided on the ball head structure and extends axially to the connecting part (63).

8. The floating RF connector according to claim 7, characterized in that, A mounting hole (41) for mounting a floating inner conductor (6) is provided axially through the floating insulator (4). The mounting hole (41) includes a small diameter section and a large diameter section. A stepped structure (42) is formed between the small diameter section and the large diameter section. The main body (61) of the floating inner conductor (6) is fixedly connected to the small diameter section of the mounting hole (41). A stop protrusion (65) for axially stopping and cooperating with the stepped structure (42) is provided at the connection position between the main body (61) and the connecting part (63).

9. The floating radio frequency connector according to claim 8, characterized in that, The stop protrusion (65) is formed by folding outward from the part between two adjacent lobes of the connecting part (63).

10. The floating RF connector according to claim 7, characterized in that, The radial dimension of the connecting part (63) is smaller than the radial dimension of the main body part (61).

Images