A radio frequency coaxial connector and shielding sleeve thereof

Abstract

The present invention relates to a radio frequency coaxial connector and a shielding sleeve thereof. The radio frequency coaxial connector includes a shielding sleeve, the front end of the shielding sleeve has a connecting ring, the connecting ring has a deformation opening in the circumference, the rear side of the connecting ring is provided with a circumferentially arranged first elastic contact finger and a second elastic contact finger, the front ends of the two elastic contact fingers are provided with an outer protrusion protruding toward the radial outside, the front end of the first elastic contact finger is connected to the connecting ring, the front end of the second elastic contact finger is suspended and can be deformed toward the radial inside when the connector is plugged in, which helps to reduce the plugging and unplugging force of the two connectors during the plugging process; in a natural state, the maximum distance between the front end face of the second elastic contact finger and the central axis of the shielding sleeve is less than the maximum distance between the outer peripheral surface of the connecting ring and the central axis of the shielding sleeve, so as to protect the end face of the outer protrusion on the second elastic contact finger through the connecting ring, avoid the end face of the outer protrusion on the second elastic contact finger and the plugged connector from hitting each other and damaging the second elastic contact finger, and avoid connector shielding failure.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency coaxial connectors, and in particular to a radio frequency coaxial connector and a shielding sleeve thereof. Background Art

[0002] The contact part of the coaxial radio frequency connector includes a shielding sleeve, an insulator and an inner conductor arranged in the shielding sleeve. The inner conductor is used for transmitting signals, and the shielding sleeve is used for shielding signals.

[0003] The invention patent document with the authorization announcement number US10826216B2 and the authorization announcement date of November 3, 2020 discloses a shielding sleeve, such as Figure 1 As shown, a connecting ring 101 is provided at the front end of the shielding sleeve, and a bevel 102 is provided circumferentially of the connecting ring 101 to provide a deformation margin for the connecting ring 101 to shrink radially inward during the process of connector plugging. A plurality of elastic contact fingers 103 are provided on the rear side of the connecting ring 101, and an outer protrusion 104 is provided at the front end of the elastic contact finger 103, and the outer protrusion 104 is connected to the connecting ring 101. During the plugging of the connector, under the extrusion of the plug-in sleeve, the elastic contact finger 103 and the connecting ring 101 are deformed radially inward. After being plugged in place, the outer protrusion 104 on the elastic contact finger 103 elastically presses against the wall of the plug-in sleeve, which can ensure that the two connectors are not loose after being connected. However, the structural setting of the above-mentioned shielding sleeve requires a larger plugging and pulling force during the plugging of the two connectors.

[0004] Another utility model patent document with authorization announcement number CN212060720U and authorization announcement date of December 1, 2020 discloses a high-frequency female data connection terminal for automobiles, which is the contact part of the coaxial RF connector, such as Figure 2 As shown, the outer conductor 105 in the connecting terminal is the shielding sleeve, and the front end of the elastic contact finger, i.e., the front spring piece 106, on the shielding sleeve is suspended in the air. During the plugging process of the connector, the front spring piece 106 will be retracted toward the radial inner side of the shielding sleeve. After being plugged in, the front end of the front spring piece 106 elastically presses against the inner wall of the plug-in cylinder to prevent the two connectors from loosening. The shielding sleeve setting of this structure can reduce the plugging and unplugging force required during the plugging and unplugging process of the two connectors. However, the shielding sleeve structure of the above structure cannot ensure absolute coaxial plugging during the plugging and unplugging of the two connectors. The skewed plugging will cause the front spring piece at the front end of the shielding sleeve to be against the cylinder wall of the plug-in sleeve, thereby causing damage to the front spring piece and failure of signal shielding. Summary of the invention

[0005] The purpose of the present invention is to provide a shielding sleeve to solve the technical problem that the existing shielding sleeve is easily damaged during the plug-in process of two connectors; accordingly, the present invention also provides a radio frequency coaxial connector to solve the technical problem that the existing radio frequency coaxial connector is easily damaged during the plug-in process, resulting in signal shielding failure.

[0006] The shielding sleeve of the present invention adopts the following technical solution:

[0007] A shielding sleeve, the front end of which is a plug-in end, has a connecting ring at the front end, and has a deformation opening in the circumferential direction of the connecting ring for the connection ring to shrink and deform toward the radial inside. The rear side of the connecting ring is provided with a circumferentially arranged first elastic contact finger and a second elastic contact finger, and at least two second elastic contact fingers are provided. The front ends of the first elastic contact finger and the second elastic contact finger are both provided with an outer protrusion protruding toward the radial outside. The front end of the first elastic contact finger is connected to the connecting ring, and the front end of the second elastic contact finger is suspended and can be deformed toward the radial inside when the connector is plugged in; the maximum distance between the outer peripheral surface of the outer protrusion of the first elastic contact finger and the central axis of the shielding sleeve is greater than the maximum distance between the outer peripheral surface of the connecting ring and the central axis of the shielding sleeve. In a natural state, the maximum distance between the front end surface of the second elastic contact finger and the central axis of the shielding sleeve is less than the maximum distance between the outer peripheral surface of the connecting ring and the central axis of the shielding sleeve, and the maximum distance between the outer peripheral surface of the outer protrusion of the second elastic contact finger and the central axis of the shielding sleeve is greater than the maximum distance between the outer peripheral surface of the connecting ring and the central axis of the shielding sleeve.

[0008] The beneficial effects of the present invention are as follows: in the shielding sleeve structure of the present invention, a first elastic contact finger and a second elastic contact finger are arranged circumferentially, and the maximum distance between the front end face of the outer protrusion of the second elastic contact finger and the central axis of the shielding sleeve is smaller than the maximum distance between the outer peripheral surface of the connecting ring and the central axis of the shielding sleeve in a natural state, so that during the process of plugging two connectors, the end face of the outer protrusion on the second elastic contact finger can be protected by the connecting ring to avoid the end face of the outer protrusion on the second elastic contact finger and the plugged connector from hitting each other and damaging the second elastic contact finger.

[0009] Furthermore, the two first elastic contact fingers are deformation opening contact fingers, the deformation opening contact fingers are located at two sides of the deformation opening in the circumferential direction, and a deformation groove communicating with the deformation opening is formed between the two deformation opening contact fingers.

[0010] The beneficial effect is that the above structural arrangement helps to improve the structural strength of the shielding sleeve, and facilitates the first elastic contact finger and the connecting ring to shrink and deform radially inward, thereby reducing the plugging and unplugging force during the plugging and unplugging process of the connector.

[0011] Furthermore, at least three first elastic contact fingers are provided, and the width of the deformation opening contact finger is smaller than the width of any other first elastic contact fingers.

[0012] The beneficial effect is that the above structural arrangement helps the deformation port contact fingers to shrink and deform radially inward, which helps to reduce the insertion and removal force during the plugging and unplugging process of the connector.

[0013] Furthermore, a first elastic contact finger is arranged between two adjacent second elastic contact fingers.

[0014] The beneficial effect is that the above structural arrangement can help to make the shielding sleeve evenly stressed in the circumferential direction after the two connectors are plugged into place.

[0015] Furthermore, the shielding sleeve is roll-formed, and its circumferential rolling seam is located at the deformation opening.

[0016] The beneficial effect is that the above structural arrangement facilitates the processing and manufacturing of the shielding sleeve.

[0017] The radio frequency coaxial connector of the present invention adopts the following technical solution:

[0018] A radio frequency coaxial connector comprises a shielding sleeve and an insulator and an inner conductor arranged in the shielding sleeve, wherein the front end of the shielding sleeve is a plug-in section, the front end of the shielding sleeve is provided with a connecting ring, the connecting ring is provided with a deformation opening in the circumferential direction for the shielding sleeve to shrink and deform toward the radial inner side, the rear side of the connecting ring is provided with a circumferentially arranged first elastic contact finger and a second elastic contact finger, at least two second elastic contact fingers are provided, the front ends of the first elastic contact finger and the second elastic contact finger are both provided with an outer protrusion facing the radial outer side, the outer protrusion of the first elastic contact finger is connected to the connecting ring, the front end of the outer protrusion of the second elastic contact finger is suspended, and can be deformed toward the radial inner side when the connector is plugged in; the maximum distance between the outer peripheral surface of the outer protrusion of the first elastic contact finger and the central axis of the shielding sleeve is greater than the maximum distance between the outer peripheral surface of the connecting ring and the central axis of the shielding sleeve, in a natural state, the maximum distance between the front end surface of the outer protrusion of the second elastic contact finger and the central axis of the shielding sleeve is less than the maximum distance between the outer peripheral surface of the connecting ring and the central axis of the shielding sleeve, and the maximum distance between the outer peripheral surface of the outer protrusion of the second elastic contact finger and the central axis of the shielding sleeve is greater than the maximum distance between the outer peripheral surface of the connecting ring and the central axis of the shielding sleeve.

[0019] The beneficial effects of the present invention are as follows: the shielding sleeve of the radio frequency coaxial connector of the present invention is provided with a circumferentially arranged first elastic contact finger and a second elastic contact finger, and the maximum distance between the front end face of the outer protrusion of the second elastic contact finger and the central axis of the shielding sleeve is smaller than the maximum distance between the outer peripheral surface of the connecting ring and the central axis of the shielding sleeve in a natural state, so that during the plugging process of the two connectors, the end face of the outer protrusion on the second elastic contact finger can be protected by the connecting ring to avoid the end face of the outer protrusion on the second elastic contact finger and the plugged connector from hitting each other and damaging the second elastic contact finger, thereby avoiding connector shielding failure; and the front end of the outer protrusion on the second elastic contact finger is arranged in the air, so that it can deform toward the radial inside when the connector is plugged in, which helps to reduce the plugging and unplugging force of the two connectors during the plugging process.

[0020] Furthermore, the two first elastic contact fingers are deformation opening contact fingers, the deformation opening contact fingers are located at two sides of the deformation opening in the circumferential direction, and a deformation groove communicating with the deformation opening is formed between the two deformation opening contact fingers.

[0021] The beneficial effect is that the above structural arrangement helps to improve the structural strength of the shielding sleeve, and facilitates the first elastic contact finger and the connecting ring to shrink and deform radially inward, thereby reducing the plugging and unplugging force during the plugging and unplugging process of the connector.

[0022] Furthermore, at least three first elastic contact fingers are provided, and the width of the deformation opening contact finger is smaller than the width of any other first elastic contact fingers.

[0023] The beneficial effect is that the above structural arrangement helps the deformation port contact fingers to shrink and deform radially inward, which helps to reduce the insertion and removal force during the plugging and unplugging process of the connector.

[0024] Furthermore, a first elastic contact finger is arranged between two adjacent second elastic contact fingers.

[0025] The beneficial effect is that the above structural arrangement can help to make the shielding sleeve evenly stressed in the circumferential direction after the two connectors are plugged into place.

[0026] Furthermore, the shielding sleeve is roll-formed, and its circumferential rolling seam is located at the deformation opening.

[0027] The beneficial effect is that the above structural arrangement facilitates the processing and manufacturing of the shielding sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a shielding sleeve in the prior art;

[0029] Figure 2 It is a schematic diagram of the structure of the outer conductor in the high-frequency female data connection terminal for automobiles in the prior art;

[0030] Figure 3 It is an assembly exploded diagram of a shielding sleeve, an insulator and an inner conductor in a specific embodiment 1 of the coaxial radio frequency connector of the present invention;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the shielding sleeve in the specific embodiment 1 of the coaxial radio frequency connector of the present invention;

[0032] Figure 5 is a schematic structural diagram of the shielding sleeve in the specific embodiment 1 of the coaxial radio frequency connector of the present invention from another perspective;

[0033] Figure 6 It is a front view of the shielding sleeve in the specific embodiment 1 of the coaxial radio frequency connector of the present invention;

[0034] Figure 7 yes Figure 6 Schematic diagram of the AA section structure;

[0035] Figure 8 yes Figure 6 A radial cross-sectional view of the middle shielding sleeve at the position of the first elastic contact finger;

[0036] Fig. 9 yes Figure 7 The enlarged structural diagram at B in the middle;

[0037] Fig.10 It is a schematic diagram of the positional relationship between the front end of the shielding sleeve and the plug-in cylinder when two connectors are plugged in in the specific embodiment 1 of the coaxial radio frequency connector of the present invention.

[0038] Figure 1 and Figure 2 middle:

[0039] 101, connecting ring; 102, oblique opening; 103, elastic contact finger; 104, outer protrusion; 105, outer conductor; 106, front spring piece;

[0040] Figures 3 to 10 middle:

[0041] 1. Shielding sleeve; 2. Insulator; 3. Inner conductor; 4. Cable connecting part; 5. Middle part; 6. Plug-in part; 7. Connecting ring; 8. Deformation opening; 9. First elastic contact finger; 10. Second elastic contact finger; 11. First outer protrusion; 12. Second outer protrusion; 13. Rolled seam; 14. Window; 15. Spike; 16. Deformation groove. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0044] It should be noted that relational terms such as "first" and "second" that may appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, elements defined by the sentence "including a...", etc., do not exclude the process or method that includes the elements.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The present invention is further described in detail below in conjunction with embodiments.

[0048] Specific embodiment 1 of the radio frequency coaxial connector provided by the present invention:

[0049] like Figure 3 and Figure 4 As shown, the RF coaxial connector includes a shielding sleeve 1, an inner conductor 3 and an insulator 2. The inner conductor 3 is located in the shielding sleeve 1 and plays a role in signal transmission. The inner conductor 3 is coaxially arranged with the shielding sleeve 1, and the insulator 2 is located between the inner conductor 3 and the shielding sleeve 1. The front end of the RF coaxial connector is a plug-in end. The shielding sleeve 1 includes a plug-in part 6, a middle part 5 and a cable connecting part 4 arranged from front to back. A window 14 is provided on the wall of the cable connecting part 4 to facilitate welding of the coaxial cable and the shielding sleeve 1. A spike 15 is provided on the inner wall of the cable connecting part 4 to facilitate connection with the coaxial cable by cold pressing.

[0050] In this embodiment, Figures 4 to 6 As shown, the inner diameter of the plug-in part 6 is smaller than the inner diameter of the middle part 5 to form an axial front stop surface between the plug-in part 6 and the middle part 5 in the shielding sleeve 1, and a circumferential annular groove is provided between the cable connecting part 4 and the middle part 5, and the circumferential annular groove is arranged to protrude radially inward to form an axial rear stop surface facing the front between the middle part 5 and the cable connecting part 4, and the insulator 2 is assembled in the middle part 5 of the shielding sleeve 1, and the shielding sleeve 1 is rolled into shape. Before rolling, the insulator 2 is placed in the middle part 5 and is located between the front stop surface and the rear stop surface. After the shielding sleeve is rolled into shape, the insulator 2 can be prevented from falling out of the shielding sleeve 1 under the stopping action of the front and rear stop surfaces.

[0051] Specifically, in this embodiment, Figures 3 to 7 As shown, the shielding sleeve 1 has a rolled seam 13, and a connecting ring 7 is provided at the front end of the plug-in part 6 of the shielding sleeve 1. The connecting ring 7 has a deformation opening 8 in the circumferential direction. The deformation opening 8 is located at the rolled seam 13 of the shielding sleeve 1, which is convenient for the processing of the deformation opening 8 on the shielding sleeve 1, and the width of the deformation opening 8 is greater than the width of the rolled seam 13. When the two connectors are plugged together, the setting of the deformation opening 8 can provide a margin for the connecting ring 7 at the front end of the shielding sleeve 1 to shrink and deform radially inward.

[0052] like Figures 4 to 9 As shown, the plug-in portion 6 of the shielding sleeve 1 is provided with circumferentially arranged first elastic contact fingers 9 and second elastic contact fingers 10 on the rear side of the connecting ring 7, four first elastic contact fingers 9 are provided, three second elastic contact fingers 10 are provided, and the first elastic contact fingers 9 and the second elastic contact fingers 10 are staggered in the circumferential direction, and the second elastic contact finger 10 is located between two adjacent first elastic contact fingers 9 arranged in the circumferential direction, and the first elastic contact fingers 9 and the second elastic contact fingers 10 are both formed by stamping and bending the barrel wall of the shielding sleeve 1. Specifically, the first elastic contact finger 9 and the second elastic contact finger 10 both include a contact arm extending from the back to the front and an outer protrusion arranged at the front end of the contact arm, the radial inner surface and the radial outer surface of the outer protrusion are both arc-shaped outer convex surfaces protruding toward the radial outside, the outer protrusion on the first elastic contact finger 9 is the first outer protrusion 11, and the outer protrusion on the second elastic contact finger 10 is the second outer protrusion 12. The difference between the two types of elastic contact fingers is that the front end of the first outer protrusion 11 on the first elastic contact finger 9 is connected to the connecting ring 7, the second outer protrusion 12 on the second elastic contact finger 10 is not connected to the connecting ring 7, and in the natural state, the front end of the second outer protrusion 12 on the second elastic contact finger 10 is suspended.

[0053] When two connectors are plugged in, the outer protrusions of the two types of elastic contacts are deformed radially inward under the squeezing effect on the inner wall of the plug-in tube. Since the front end of the second elastic contact finger 10 is suspended in the air, the squeezing force between the second elastic contact finger 10 and the inner wall of the plug-in tube can be reduced, thereby reducing the friction resistance when the two connectors are plugged in, and the plug-in and pull-out force when the connectors are connected and disconnected can be reduced.

[0054] In order to prevent the front end of the plug-in barrel from axially abutting against the second elastic contact finger 10 during the plug-in process of the two connectors, thereby damaging the shielding sleeve 1 and causing shielding failure, in this embodiment, Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the maximum distance between the front end face of the second outer protrusion 12 and the central axis of the shielding sleeve 1 is smaller than the maximum distance between the outer peripheral surface of the connecting ring 7 and the central axis of the shielding sleeve 1, so as to ensure that after the connecting ring 7 enters the insert cylinder body, the front end face of the second outer protrusion 12 does not contact the insert cylinder body. In addition, the maximum distance between the outer peripheral surface of the first outer protrusion 11 and the central axis of the shielding sleeve 1 is greater than the maximum distance between the outer peripheral surface of the connecting ring 7 and the central axis of the shielding sleeve 1, and the maximum distance between the outer peripheral surface of the second outer protrusion 12 and the central axis of the shielding sleeve 1 is greater than the maximum distance between the outer peripheral surface of the connecting ring 7 and the central axis of the shielding sleeve 1, so as to ensure that after the connecting ring 7 enters the insert cylinder body, the outer peripheral surfaces of the first outer protrusion and the second outer protrusion 12 are both pressed into contact with the inner wall surface of the insert cylinder body.

[0055] In this embodiment, Figure 4 As shown, the rolled seam 13 is located between two adjacent first elastic contact fingers 9 in the circumferential direction, and the two first elastic contact fingers 9 are located on both sides of the deformation opening 8 in the circumferential direction to form deformation opening contact fingers, and the circumferential width of the deformation opening contact fingers is smaller than the width of the remaining first elastic contact fingers 9. A deformation groove is provided between the two deformation opening contact fingers, and the deformation groove is connected to the deformation opening 8 on the connecting ring 7, and the circumferential width of the deformation groove is equal to the circumferential width of the deformation opening 8. The provision of the deformation groove helps to shrink and deform the two deformation opening contact fingers toward the radial inner side, and helps to reduce the plugging and unplugging force when the two connectors are connected and disconnected.

[0056] In this embodiment, Figures 4 to 10 As shown, a chamfer is provided between the outer circumferential surface and the front end surface of the connecting ring 7, which can provide guidance for the coaxial plugging of the shielding sleeve 1 and the plug-in cylinder, thereby facilitating the smooth plugging of the two connectors.

[0057] Specific embodiment 2 of the radio frequency coaxial connector of the present invention:

[0058] The difference from specific embodiment 1 is that: three first elastic contact fingers are provided, and the circumferential widths of the first elastic contact fingers are equal, four second elastic contact fingers are provided, the first elastic contact finger is located between two adjacent second elastic contact fingers arranged in the circumferential direction, the rolled seam is located between two adjacent second elastic contact fingers in the circumferential direction, the two second elastic contact fingers are located on both sides of the deformation opening in the circumferential direction to form deformation opening contact fingers, the circumferential width of the deformation opening contact fingers is smaller than the width of the remaining second elastic contact fingers, and a deformation groove is provided between the two deformation opening contact fingers, the deformation groove is connected to the deformation opening on the connecting ring, and the circumferential width of the deformation groove is equal to the circumferential width of the deformation opening, and the provision of the deformation groove helps to shrink and deform the two deformation opening contact fingers toward the radial inside, which helps to reduce the plugging and unplugging force when the two connectors are connected and disconnected.

[0059] In other embodiments, the shielding sleeve is not provided with deformation opening contact fingers, and three of each type of elastic contact fingers are provided and are staggered in the circumferential direction. No slots are provided on the two types of elastic contact fingers. The shielding sleeve with such a structural arrangement can also provide deformation margin for the connecting ring to shrink radially inward during the process of plugging the two connectors.

[0060] Specific embodiment 3 of the radio frequency coaxial connector of the present invention:

[0061] The difference from specific embodiment 1 is that the front end face and the outer peripheral surface of the connecting ring are transitioned through an arc surface, which can also provide guidance for the coaxial plugging of the shielding sleeve and the plug-in cylinder during the plug-in process of the two connectors, thereby facilitating the smooth plug-in of the two connectors.

[0062] Specific embodiment 4 of the radio frequency coaxial connector of the present invention:

[0063] The difference from the specific embodiment 1 is that no second elastic contact finger may be provided between two first elastic contact fingers arranged adjacent to each other in the circumferential direction, and the two first elastic contact fingers arranged adjacent to each other are transitioned through the wall of the shielding sleeve.

[0064] In other embodiments, four second elastic contact fingers are provided, three first elastic contact fingers are provided, no first elastic contact finger may be provided between two circumferentially adjacent second elastic contact fingers, and the wall of the shielding sleeve is used as a transition between two adjacent second elastic contact fingers.

[0065] In other embodiments, the number of the first elastic contact fingers and the number of the second elastic contact fingers can be respectively set to be more than four, as long as the two types of elastic contact fingers are staggered in the circumferential direction.

[0066] Specific embodiment 5 of the radio frequency coaxial connector of the present invention:

[0067] The difference from the specific embodiment 1 is that the circumferential rolled seam of the shielding sleeve is located at the second elastic contact finger portion in the circumferential direction.

[0068] Or in other embodiments, two adjacent second elastic contact fingers are transitioned through the wall of the shielding sleeve, and the rolled seam is arranged at the position of this part of the wall in the circumferential direction.

[0069] Specific embodiment 6 of the radio frequency coaxial connector of the present invention:

[0070] The difference from the specific embodiment 1 is that the shielding sleeve is formed by machining, no rolling seam is provided on the shielding sleeve, and the circumferential annular groove between the cable connecting part and the middle part is formed by necking and deformation after the insulator is installed in the shielding sleeve.

[0071] In other embodiments, the shielding sleeve can also be formed by casting. No rolling seam is set on the shielding sleeve. The circumferential annular groove between the cable connecting part and the middle part is formed after the shielding sleeve is cast and after the insulator is installed in the shielding sleeve and is necked and deformed.

[0072] Specific implementation of the shielding sleeve provided by the present invention:

[0073] The structure of the shielding sleeve is the same as the structure of the shielding sleeve in the specific implementation of the above-mentioned radio frequency coaxial connector, and will not be repeated here.

[0074] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shielding sleeve, the front end of which is a plug-in end, the front end of which has a connecting ring (7), the connecting ring (7) has a deformation opening (8) in the circumferential direction for the connecting ring (7) to shrink and deform toward the radial inner side, characterized in that: The rear side of the connecting ring (7) is provided with a first elastic contact finger (9) and a second elastic contact finger (10) arranged circumferentially, at least two second elastic contact fingers (10) are provided, the front ends of the first elastic contact finger (9) and the second elastic contact finger (10) are both provided with an outer protrusion protruding toward the radial outside, the front end of the first elastic contact finger (9) is connected to the connecting ring (7), and the front end of the second elastic contact finger (10) is suspended and can be deformed toward the radial inside when the connector is plugged in; the outer peripheral surface of the outer protrusion of the first elastic contact finger (9) is aligned with the central axis of the shielding sleeve (1) The maximum distance between the lines is greater than the maximum distance between the outer peripheral surface of the connecting ring (7) and the central axis of the shielding sleeve (1); in a natural state, the maximum distance between the front end surface of the second elastic contact finger (10) and the central axis of the shielding sleeve (1) is less than the maximum distance between the outer peripheral surface of the connecting ring (7) and the central axis of the shielding sleeve (1); and the maximum distance between the outer peripheral surface of the outer protrusion of the second elastic contact finger (10) and the central axis of the shielding sleeve (1) is greater than the maximum distance between the outer peripheral surface of the connecting ring (7) and the central axis of the shielding sleeve (1).

2. The shielding sleeve according to claim 1, characterized in that: The two first elastic contact fingers (9) are deformation opening contact fingers, which are located on both sides of the deformation opening (8) in the circumferential direction, and a deformation groove (16) connected to the deformation opening (8) is formed between the two deformation opening contact fingers.

3. The shielding sleeve according to claim 2, characterized in that: At least three first elastic contact fingers (9) are provided, and the width of the deformation opening contact finger is smaller than the width of any other first elastic contact finger (9).

4. The shielding sleeve according to any one of claims 1 to 3, characterized in that: A first elastic contact finger (9) is arranged between two adjacent second elastic contact fingers (10).

5. The shielding sleeve according to any one of claims 1 to 3, characterized in that: The shielding sleeve (1) is rolled and formed, and its circumferential rolling seam (13) is located at the deformation opening (8).

6. A radio frequency coaxial connector, comprising a shielding sleeve (1), an insulator (2) and an inner conductor (3) arranged in the shielding sleeve (1), wherein the front end of the shielding sleeve (1) is a plug-in section, the front end of the shielding sleeve (1) is provided with a connecting ring (7), and the connecting ring (7) has a deformation opening (8) in the circumferential direction for the connecting ring (7) to shrink and deform toward the radial inner side, characterized in that: A first elastic contact finger (9) and a second elastic contact finger (10) are arranged circumferentially on the rear side of the connecting ring (7), at least two second elastic contact fingers (10) are provided, the front ends of the first elastic contact finger (9) and the second elastic contact finger (10) are both provided with an outer protrusion protruding radially outward, the front end of the first elastic contact finger (9) is connected to the connecting ring (7), and the front end of the second elastic contact finger (10) is suspended and can be deformed radially inward when the connector is plugged in; in a natural state, the maximum distance between the front end surface of the second elastic contact finger (10) and the central axis of the shielding sleeve (1) is smaller than the maximum distance between the outer peripheral surface of the connecting ring (7) and the central axis of the shielding sleeve (1), and the maximum distance between the outer peripheral surface of the outer protrusion of the second elastic contact finger (10) and the central axis of the shielding sleeve (1) is larger than the maximum distance between the outer peripheral surface of the connecting ring (7) and the central axis of the shielding sleeve (1).

7. The radio frequency coaxial connector according to claim 6, characterized in that: The two first elastic contact fingers (9) are deformation opening contact fingers, which are located on both sides of the deformation opening (8) in the circumferential direction, and a deformation groove (16) connected to the deformation opening (8) is formed between the two deformation opening contact fingers.

8. The radio frequency coaxial connector according to claim 7, characterized in that: At least three first elastic contact fingers (9) are provided, and the width of the deformation opening contact finger is smaller than the width of any other first elastic contact finger (9).

9. The radio frequency coaxial connector according to any one of claims 6 to 8, characterized in that: A first elastic contact finger (9) is arranged between two adjacent second elastic contact fingers (10).

10. The radio frequency coaxial connector according to any one of claims 6 to 8, characterized in that: The shielding sleeve (1) is rolled and formed, and its circumferential rolling seam (13) is located at the deformation opening (8).

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