Unthreaded hole quick-plug self-locking connector

Abstract

The invention relates to an unthreaded hole quick-plug self-locking connector which comprises an inner conductor, an insulator, an outer conductor and a contact shell, the inner conductor is arranged in the outer conductor, and the insulator is arranged between the outer conductor and the inner conductor; the outer conductor comprises a QCA end outer conductor and a microstrip end outer conductor, and the QCA end outer conductor is connected with the microstrip end outer conductor; the periphery of the micro-strip end outer conductor is provided with a contact shell, the contact shell is connected with the micro-strip end outer conductor through a key slot, the periphery of the contact shell is rotatably connected with a knurled shell, and the QCA end outer conductor is connected with the micro-strip end outer conductor and is limited through the knurled shell; when the knurled shell rotates around the contact shell, the knurled shell drives the contact shell to slide back and forth along the key slot direction, so that self-locking and unlocking of the connector and the unthreaded hole end are realized; the locking and unlocking functions of the contact head of the contact head shell and the matched unthreaded hole end are realized, the installation process of the connector at the matched end is greatly simplified, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency connectors, and in particular to a light hole quick-insert self-locking connector. Background Art

[0002] Conventional RF coaxial connectors are flange mounted, with the advantages of strong shock resistance, reliable connection, and excellent electrical performance. They are widely used in radio equipment and instruments under vibration and harsh environmental conditions. In daily testing and installation, the RF coaxial connector under test needs to be repeatedly plugged in and separated from its mating end, especially for flange mounted connectors, the screws on the flange need to be repeatedly tightened and removed, which has low work efficiency and high labor intensity. Therefore, it will cause inconvenience in operation when it frequently switches between loading and unloading states. Summary of the invention

[0003] The purpose of the present invention is to provide a fast-insertion self-locking connector with a light hole in view of the deficiencies in the prior art.

[0004] The present invention is achieved by adopting the following technical solutions:

[0005] A light hole quick-insert self-locking connector, comprising an inner conductor, an insulator, an outer conductor and a contact head housing, wherein the inner conductor is arranged inside the outer conductor, and the insulator is arranged between the outer conductor and the inner conductor;

[0006] The outer conductor includes a QCA end outer conductor and a microstrip end outer conductor, the QCA end outer conductor is connected to the microstrip end outer conductor; the outer periphery of the microstrip end outer conductor is provided with the contact head shell, the contact head shell is connected to the microstrip end outer conductor via a keyway, the outer periphery of the contact head shell is rotatably connected with a knurled shell, the QCA end outer conductor is connected to the microstrip end outer conductor, and is limited by the knurled shell;

[0007] When the knurled shell rotates around the contact head shell, the contact head shell is driven to slide back and forth along the key slot direction, thereby realizing self-locking and unlocking of the connector and the light hole end.

[0008] Preferably, the inner conductor includes a jack and a microstrip end, the jack is plugged into the QCA-J type end, and the microstrip end is plugged into the optical hole end; straight grooves, insert teeth and inner conductor positioning steps are provided in sequence between the jack and the microstrip end, the straight grooves and insert teeth cooperate with the insulator to limit the position, and the inner conductor positioning step cooperates with the insulator to position.

[0009] Preferably, the microstrip end is a square microstrip end.

[0010] Preferably, the insulator includes a first insulator and a second insulator, the first insulator is arranged between the QCA end outer conductor and the inner conductor, and the second insulator is arranged between the microstrip end outer conductor and the inner conductor.

[0011] Preferably, a first positioning step, a second positioning step, a barb structure A and a single-sided milled flat structure A are provided in the outer conductor of the QCA end, the first positioning step is used to position the first insulator, and the barb structure A is used to limit the first insulator; the second positioning step is used for positioning when the outer conductor of the QCA end is connected to the outer conductor of the microstrip end; the outer conductor of the QCA end is limited by the single-sided milled flat structure A when the outer conductor of the microstrip end is press-fitted; the outer periphery of the outer conductor of the QCA end is provided with a double-sided milled flat structure, the double-sided milled flat structure is used for positioning when installing the inner conductor, and the outer periphery of the outer conductor of the QCA end is located in the knurled shell.

[0012] Preferably, a third positioning step, a barb structure B, a single-sided milled flat structure B and a single-sided milled flat structure C are provided in the outer conductor of the microstrip end, the third positioning step is used to position the second insulator, the barb structure B is used to limit the second insulator, the outer conductor of the microstrip end is limited by the single-sided milled flat structure B when being press-fitted with the outer conductor of the QCA end, and the single-sided milled flat structure C is used for the mutual matching of the outer conductor of the microstrip end and the optical hole end; a key and a bulge are provided on the outer periphery of the outer conductor of the microstrip end, the key is connected to the keyway of the contact head shell, and the bulge is used to open the contact head shell.

[0013] Preferably, a keyway is provided in the contact head shell, the keyway is connected to the key mating keyway, a connecting thread is provided on the outer periphery of the contact head shell, the connecting thread is rotatably connected to the knurled shell; the contact head shell is also provided with a contact head, and a groove is provided on the outer periphery of the contact head.

[0014] Preferably, a step structure and a fixed thread are provided inside the knurled shell, and the fixed thread is rotatably connected to the connecting thread; the step structure limits the contact head shell, and knurling is provided on the outer periphery of the knurled shell.

[0015] Preferably, the knurled shell is also provided with a positioning groove and a pressure ring, the pressure ring is sleeved on the outer periphery of the knurled shell, the pressure ring is interference fitted with the knurled shell, the outer periphery of the QCA end outer conductor is located in the positioning groove and between the pressure ring and the positioning groove.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] The rotational motion of the knurled shell is converted into a linear motion of the contact head shell sliding back and forth along the keyway direction. During the linear motion of the contact head shell along the keyway direction, the contact head of the contact head shell expands and contracts at the bulge of the outer conductor of the microstrip end, thereby realizing the locking and unlocking functions of the contact head of the contact head shell and its mating optical hole end, which greatly simplifies the installation process of the connector at the mating end and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the exploded structure of the outer conductor, the contact head housing and the knurled housing of the present invention;

[0021] Figure 4 It is a schematic diagram of the main structure of the inner conductor of the present invention;

[0022] Figure 5 It is a right side structural schematic diagram of the inner conductor of the present invention;

[0023] Figure 6 is a schematic structural diagram of the first insulator of the present invention;

[0024] Figure 7 is a schematic structural diagram of the second insulator of the present invention;

[0025] Figure 8 The structure of the outer conductor of the QCA end of the present invention is schematically shown. Figure 1 ;

[0026] Fig. 9 The structure of the outer conductor of the QCA end of the present invention is schematically shown. Figure 2 ;

[0027] Fig.10 It is a schematic diagram of the structure of the outer conductor of the microstrip end of the present invention;

[0028] Fig.11 It is a schematic diagram of the combined structure of the QCA end outer conductor and the microstrip end outer conductor of the present invention;

[0029] Fig.12 It is a schematic structural diagram of the contact head housing of the present invention;

[0030] Fig.13 It is a schematic diagram of the structure of the knurled shell of the present invention;

[0031] Fig.14 It is a structural schematic diagram of the pressure ring of the present invention;

[0032] Fig.15 This is a schematic diagram of the cross-sectional structure of the present invention in a locked state;

[0033] Fig.16 for Fig.15 A partial enlarged view of the middle A;

[0034] Fig.17 This is a schematic diagram of the cross-sectional structure of the present invention in an unlocked state;

[0035] Fig.18 for Fig.17 A partial enlarged view of point B in the middle.

[0036] Figure Annotation

[0037] 1. Inner conductor; 11. Jack; 12. Microstrip end; 13. Straight grain; 14. Insertion teeth; 15. Inner conductor positioning step; 2. First insulator; 3. Second insulator; 4. QCA end outer conductor; 41. First positioning step; 42. Second positioning step; 43. Barb structure A; 44. Single-side milling flattening structure A; 45. Double-side milling flattening structure; 5. Microstrip end outer conductor; 51. Third positioning step; 52. Key; 53. Bump; 54. Single-side milling flattening structure B; 55. Single-side milling flattening structure C; 56. Barb structure B; 6. Contact head shell; 61. Keyway; 62. Connecting thread; 63. Contact head; 64. Groove; 7. Knurled shell; 71. Step structure; 72. Fixing thread; 73. Knurling; 74. Positioning groove; 8. Press ring. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figure 1-Figure 14 As shown, a light hole quick-insert self-locking connector includes an inner conductor 1, an insulator, an outer conductor and a contact head housing 6, the inner conductor 1 is arranged inside the outer conductor, and an insulator is arranged between the outer conductor and the inner conductor 1;

[0041] The outer conductor includes a QCA end outer conductor 4 and a microstrip end outer conductor 5, and the QCA end outer conductor 4 is connected to the microstrip end outer conductor 5; a contact head shell 6 is provided on the periphery of the microstrip end outer conductor 5, and the contact head shell 6 is connected to the microstrip end outer conductor 5 through a keyway, and a knurled shell 7 is rotatably connected to the periphery of the contact head shell 6, and the QCA end outer conductor 4 is connected to the microstrip end outer conductor 5, and is limited by the knurled shell 7;

[0042] When the knurled housing 7 rotates around the contact housing 6, the contact housing 6 is driven to slide back and forth along the keyway direction, thereby realizing self-locking and unlocking of the connector and the light hole end.

[0043] The inner conductor 1 includes a jack 11 and a microstrip end 12. The jack 11 is plugged into the QCA-J type end, and the microstrip end 12 is plugged into the optical hole end. Straight grooves 13, insert teeth 14 and inner conductor positioning steps 15 are arranged in sequence between the jack 11 and the microstrip end 12. The straight grooves 13 and the insert teeth 14 cooperate with the insulator to limit the position, and the inner conductor positioning step 15 cooperates with the insulator to position.

[0044] The microstrip end 12 is a square microstrip end.

[0045] The jack 11 is plugged into the QCA-J type end to achieve signal transmission; the microstrip end 12 is a square microstrip end, which is used to plug into the matching optical hole end to achieve signal transmission; the straight groove 13 and the insert teeth 14 are used to prevent the inner conductor 1 from falling off from the insulator, and the inner conductor positioning step 15 is used to limit the position when assembling with the insulator.

[0046] The insulator includes a first insulator 2 and a second insulator 3 . The first insulator 2 is arranged between the QCA end outer conductor 4 and the inner conductor 1 , and the second insulator 3 is arranged between the microstrip end outer conductor 5 and the inner conductor 1 .

[0047] The first insulator 2 and the second insulator 3 are respectively assembled between the QCA end outer conductor 4, the microstrip end outer conductor 5 and the inner conductor 1 to fix the inner conductor 1 and match the electrical performance of the entire connector.

[0048] A first positioning step 41, a second positioning step 42, a barb structure A43 and a single-sided milled flat structure A44 are provided inside the QCA end outer conductor 4. The first positioning step 41 is used to position the first insulator 2, and the barb structure A43 is used to limit the first insulator 2; the second positioning step 42 is used for positioning when the QCA end outer conductor 4 is connected to the microstrip end outer conductor 5; the QCA end outer conductor 4 is limited by the single-sided milled flat structure A44 when the microstrip end outer conductor 5 is press-fitted; the outer periphery of the QCA end outer conductor 4 is provided with a double-sided milled flat structure 45, and the double-sided milled flat structure 45 is used for positioning when the inner conductor 1 is installed, and the outer periphery of the QCA end outer conductor 4 is located inside the knurled shell 7.

[0049] The first positioning step 41 is used for positioning when assembling the first insulator 2, the barb structure A43 prevents the first insulator 2 from falling off, the second positioning step 42 is used for positioning when the QCA end outer conductor 4 and the microstrip end outer conductor 5 are press-fitted, and the single-sided milled flattened structure A44 is used for limiting; the single-sided milled flattened structure A44 is arranged in parallel with the double-sided milled flattened structure 45, and the double-sided milled flattened structure 45 is used for positioning when installing the inner conductor 1, so that one side of the inner conductor 1 is parallel to the double-sided milled flattened structure 45, thereby improving the installation efficiency.

[0050] A third positioning step 51, a barb structure B56, a single-sided milling flattened structure B54 and a single-sided milling flattened structure C55 are provided in the outer conductor 5 at the microstrip end. The third positioning step 51 is used to position the second insulator 3. The barb structure B56 is used to limit the second insulator 3. The outer conductor 5 at the microstrip end and the outer conductor 4 at the QCA end are press-fitted and limited by the single-sided milling flattened structure B54. The single-sided milling flattened structure C55 is used for the mutual matching between the outer conductor 5 at the microstrip end and the optical hole end. A key 52 and a convex bulge 53 are provided on the outer periphery of the outer conductor 5 at the microstrip end. The key 52 is connected to the key slot of the contact head shell 6. The convex bulge 53 is used to open the contact head shell 6.

[0051] The third positioning step 51 is used for positioning when assembling the second insulator 3, and the barb structure B56 prevents the second insulator 3 from falling off; the single-sided milled flat structure B54 is used to limit the microstrip end outer conductor 5 and the QCA end outer conductor 4 when they are press-fitted together, and the single-sided milled flat structure C55 is used for the mutual matching of the microstrip end outer conductor 5 and the light hole end. The key 52 limits the rotation of the contact head shell 6 to ensure that the contact head shell 6 moves along the direction of the key 52. ​​When the contact head shell 6 moves back and forth along the direction of the key 52, the convex bump 53 serves to support the contact head 63 of the contact head shell 6.

[0052] A keyway 61 is provided inside the contact head housing 6, and the keyway 61 is connected to the key 52 in a mating manner. A connecting thread 62 is provided on the outer periphery of the contact head housing 6, and the connecting thread 62 is rotatably connected to the knurled housing 7; the contact head housing 6 is also provided with a contact head 63, and a groove 64 is provided on the outer periphery of the contact head 63.

[0053] The keyway 61 matches the key 52, the connecting thread 62 matches the fixed thread 72 in the knurled shell 7, the contact head 63 is in a natural state, that is, an unplugged state, the connector is in an unlocked state in the light hole end, and when the contact head 63 is stretched, the connector is in a locked state at the light hole end. When the groove 64 is in the locked state, it plays an anti-slip role to prevent the contact head 63 from falling off from the light hole end.

[0054] A step structure 71 and a fixed thread 72 are provided inside the knurled shell 7 , and the fixed thread 72 is rotatably connected to the connecting thread 62 ; the step structure 71 limits the contact head shell 6 , and knurling 73 is provided on the outer periphery of the knurled shell 7 .

[0055] The knurled shell 7 is also provided with a positioning groove 74 and a pressure ring 8. The pressure ring 8 is sleeved on the outer periphery of the knurled shell 7. The pressure ring 8 and the knurled shell 7 are interference fitted. The outer periphery of the QCA end outer conductor 4 is located in the positioning groove 74 and between the pressure ring 8 and the positioning groove 74.

[0056] The step structure 71 limits the moving distance of the contact head housing 6, and the knurling 73 activates the anti-slip function.

[0057] Example 2

[0058] like Figure 15-18 As shown, the knurled shell 7 is rotated to drive the contact head shell 6 to slide back and forth in the direction of the keyway. During the movement, the contact head 63 is expanded (or dropped) at the convex bump 53, and an expansion (or contraction) phenomenon occurs, thereby achieving locking (or unlocking) of the connector and the mating optical hole end, which can not only realize high-frequency signal transmission, but also facilitate operation and achieve quick connection.

[0059] The assembly process of the present invention:

[0060] Press the QCA end outer conductor 4 and the microstrip end outer conductor 5 together, press the second insulator 3 into the microstrip end outer conductor 5, press the inner conductor 1 into the second insulator 3, press the first insulator into the QCA end outer conductor, put the contact head shell into the microstrip end outer conductor 5, screw the knurled shell 7 into the contact head shell 6, press the pressure ring 8 into the knurled shell 7, and ensure that the knurled shell 7 can rotate flexibly, and the assembly is completed.

Claims

1. A light hole quick-insert self-locking connector, characterized in that: It comprises an inner conductor (1), an insulator, an outer conductor and a contact head shell (6), wherein the inner conductor (1) is arranged inside the outer conductor, and the insulator is arranged between the outer conductor and the inner conductor (1); The outer conductor comprises a QCA end outer conductor (4) and a microstrip end outer conductor (5), wherein the QCA end outer conductor (4) is connected to the microstrip end outer conductor (5); the outer periphery of the microstrip end outer conductor (5) is provided with the contact head shell (6), the contact head shell (6) and the microstrip end outer conductor (5) are connected via a keyway, the outer periphery of the contact head shell (6) is rotatably connected with a knurled shell (7), the QCA end outer conductor (4) is connected to the microstrip end outer conductor (5), and is limited by the knurled shell (7); When the knurled housing (7) rotates around the contact head housing (6), it drives the contact head housing (6) to slide back and forth along the key slot direction, thereby achieving self-locking and unlocking of the connector and the light hole end.

2. The light hole quick-insert self-locking connector according to claim 1, characterized in that: The inner conductor (1) comprises an jack (11) and a microstrip end (12), wherein the jack (11) is plugged into a QCA-J type end, and the microstrip end (12) is plugged into a light hole end; straight grooves (13), insert teeth (14) and an inner conductor positioning step (15) are sequentially arranged between the jack (11) and the microstrip end (12), wherein the straight grooves (13) and the insert teeth (14) cooperate with an insulator to limit position, and the inner conductor positioning step (15) cooperates with the insulator to position.

3. The light hole quick-insert self-locking connector according to claim 2, characterized in that: The microstrip end (12) is a square microstrip end.

4. The light hole quick-insert self-locking connector according to claim 2, characterized in that: The insulator comprises a first insulator (2) and a second insulator (3), wherein the first insulator (2) is arranged between the QCA end outer conductor (4) and the inner conductor (1), and the second insulator (3) is arranged between the microstrip end outer conductor (5) and the inner conductor (1).

5. The light hole quick-insert self-locking connector according to claim 4, characterized in that: A first positioning step (41), a second positioning step (42), a barb structure A (43) and a single-sided milling flat structure A (44) are provided inside the QCA end outer conductor (4); the first positioning step (41) is used to position the first insulator (2), and the barb structure A (43) is used to limit the position of the first insulator (2); the second positioning step (42) is used to position the QCA end outer conductor (4) when connected to the microstrip end outer conductor (5); the single-sided milling flat structure A (44) is used to limit the position of the QCA end outer conductor (4) and the microstrip end outer conductor (5) when they are press-fitted; a double-sided milling flat structure (45) is provided on the outer periphery of the QCA end outer conductor (4), and the double-sided milling flat structure (45) is used to position when installing the inner conductor (1); the outer periphery of the QCA end outer conductor (4) is located inside the knurled shell (7).

6. The light hole quick-insert self-locking connector according to claim 4, characterized in that: The microstrip end outer conductor (5) is provided with a third positioning step (51), a barb structure B (56), a single-side milling flat structure B (54) and a single-side milling flat structure C (55); the third positioning step (51) is used to position the second insulator (3); the barb structure B (56) is used to limit the second insulator (3); the microstrip end outer conductor (5) and the QCA end outer conductor (4) are press-fitted and connected by the single-side milling flat structure B (54); the single-side milling flat structure C (55) is used for the mutual matching of the microstrip end outer conductor (5) and the light hole end; the outer periphery of the microstrip end outer conductor (5) is provided with a key (52) and a convex hull (53); the key (52) is connected to the keyway of the contact head shell (6); the convex hull (53) is used to open the contact head shell (6).

7. The light hole quick-insert self-locking connector according to claim 6, characterized in that: The contact head shell (6) is provided with a keyway (61), the keyway (61) is connected to the key (52) by means of a mating keyway, the outer periphery of the contact head shell (6) is provided with a connecting thread (62), the connecting thread (62) is rotatably connected to the knurled shell (7); the contact head shell (6) is also provided with a contact head (63), the outer periphery of the contact head (63) is provided with a groove (64).

8. The light hole quick-insert self-locking connector according to claim 7, characterized in that: The knurled shell (7) is provided with a step structure (71) and a fixed thread (72), and the fixed thread (72) is rotatably connected to the connecting thread (62); the step structure (71) limits the contact head shell (6), and the knurled shell (7) is provided with knurling (73) on its outer periphery.

9. The light hole quick-insert self-locking connector according to claim 5, characterized in that: The knurled shell (7) is also provided with a positioning groove (74) and a pressure ring (8). The pressure ring (8) is sleeved on the outer circumference of the knurled shell (7). The pressure ring (8) and the knurled shell (7) are interference-fitted. The outer circumference of the QCA end outer conductor (4) is located in the positioning groove (74) and between the pressure ring (8) and the positioning groove (74).

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