Split type SMA radio frequency connector

Abstract

The utility model discloses a split type SMA (Shape Memory Alloy) radio frequency connector. The utility model relates to a plug-in connector which comprises a plastic shell, a tail pin arranged at the left end of the plastic shell, a threaded sleeve arranged at the right end of the plastic shell, and a plug-in module which is elastically arranged in the threaded sleeve in a sliding manner and is used for realizing plug-in electrical conduction with the tail pin, the detection needle is arranged in the bottom wall of the plastic shell; and the fixed terminals are arranged on the front side and the rear side of the plastic shell, and the right ends of the fixed terminals are fixed on the threaded sleeve. According to the utility model, the whole product structure is lighter, and the stability of plugging with the male head can be improved while the overall strength of the product is ensured.

Description

[Technical field]

[0001] The utility model belongs to the technical field of radio frequency connectors, and in particular relates to a split SMA radio frequency connector. [Background technology]

[0002] The SMA connector is a small coaxial connector with threaded connection, which has the characteristics of wide frequency band, excellent performance, high reliability and long life. It is widely used. Its structure mainly includes a housing, a PIN pin arranged at the rear of the housing, and a plug structure arranged at the front of the housing to elastically contact with the PIN pin to achieve conduction. For example, the sunken switch connector disclosed in Chinese Patent Publication No. CN210224370U includes a rear end body with a sunken cavity, a conductive tail pin arranged in the sunken cavity, a communication plug structure arranged in the sunken cavity to elastically plug with the tail pin, and a side pin arranged on the side wall of the rear end body to extend the rebound distance of the gear communication plug structure. In the above scheme, the housing or the sunken cavity is made of metal, which is not only costly, but also mainly made of metal, which makes the entire connector heavy, and is not suitable for the current demand for thin and light electronic devices; and the communication plug structure is arranged in the sunken cavity, and the two annular structures will slide and rotate with each other. Since the male head is matched with the external thread of the communication plug structure through the internal thread, if the communication plug structure slides and rotates, it is not conducive to the installation and matching of the communication plug structure and the male head.

[0003] Therefore, it is necessary to provide a split SMA radio frequency connector to solve the above technical problems. [Contents of the utility model]

[0004] The main purpose of the utility model is to provide a split SMA radio frequency connector, the entire product structure is lighter, and the stability of plugging with a male head can be improved while ensuring the overall strength of the product.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a split SMA radio frequency connector, which includes a plastic shell, a tail pin arranged at the left end of the plastic shell, a threaded sleeve arranged at the right end of the plastic shell, a plug-in module elastically slidably arranged inside the threaded sleeve and used to achieve plug-in electrical conduction with the tail pin, a detection pin arranged in the bottom wall of the plastic shell, and fixed terminals arranged on the front and rear sides of the plastic shell and fixed on the threaded sleeve at the right end.

[0006] Furthermore, the plastic shell includes a tail pin socket arranged at the left end for installing the tail pin, a mounting hole arranged at the right end for installing the threaded sleeve and the plug-in module, a main channel arranged inside for connecting the tail pin socket and the mounting hole, a plug-in slot arranged at the bottom for installing the detection pin and connected to the main channel, and accommodating slots arranged on the front and rear sides for installing the fixed terminal.

[0007] Furthermore, the tail needle includes a first welding portion extending from the side of the plastic shell at the left end, a conductive tip at the right end for plugging into the plug-in module, a first axial boss arranged in the middle for supporting the channel wall of the main channel for axial limitation, and a first annular barb arranged between the first welding portion and the first axial boss and used to be inserted into the plastic shell.

[0008] Furthermore, the plug-in module includes a central conductive column arranged corresponding to the tail pin and capable of realizing electrical connection with the tail pin through plug-in, an insulating rubber core wrapped around the outer periphery of the central conductive column, a sleeve seat arranged at the left end of the insulating rubber core and slidably sleeved on the outer periphery of the conductive tip, and an elastic member supported between the first shaft boss and the sleeve seat.

[0009] Furthermore, the central conductive column includes a first plug hole arranged at the left end for inserting the conductive tip, a second plug hole arranged at the right end for inserting the male connector, and a second annular barb arranged in the middle for inserting into the insulating rubber core; the left end of the central conductive column is arranged inside the insulating rubber core and a clearance groove is reserved between the left end of the insulating rubber core and the left end of the central conductive column for the insertion depth of the tail pin.

[0010] Furthermore, an annular matching groove corresponding to the stepped axis of the insulating rubber core is provided inside the left end of the threaded sleeve, and an external thread matching the male connector and a third annular barb that is inserted into the plastic shell are provided on the outer periphery of the threaded sleeve.

[0011] Furthermore, the sleeve seat includes an internally arranged through hole for the tail pin to extend out and an annular boss for the insulating rubber core to abut against.

[0012] Furthermore, the elastic member is a spring, and the spring is sleeved on the outer circumference of the tail needle.

[0013] Furthermore, the detection needle includes a second welding portion, two fixed corners extending forward and upward from the second welding portion and used to be inserted into the plug-in slot, and a contoured avoidance groove arranged between the two fixed corners and contoured to the outer periphery of the insulating rubber core.

[0014] Furthermore, the fixed terminal includes a fixed body, two third welding parts extending downward from the left and right sides of the fixed body, a welding plate arranged on the right front side of the fixed body and welded and fixed with the threaded sleeve, and an L-shaped connecting part connecting the fixed body and the welding plate; the plastic shell is provided with an avoidance groove for avoiding the welding plate.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) The shell is made of plastic and can be directly injection molded. Compared with traditional metal materials, it is lighter and easier to mold;

[0017] (2) Fixed terminals are provided on the front and rear sides of the plastic shell, which not only enhances the overall strength of the split SMA RF connector, but also the welding plates of the two fixed terminals are both stuck in the avoidance groove of the plastic shell, which can limit the rotation of the threaded sleeve in the plastic shell, thereby achieving stable installation between the threaded sleeve and the male connector; therefore, while ensuring the overall strength of the product, it can also improve the stability of the plug-in with the male connector.

Brief Description of the Drawings

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the split SMA radio frequency connector according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the bottom of the split SMA radio frequency connector according to an embodiment of the utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of a split SMA radio frequency connector according to an embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the tail pin and the plug-in module of the embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the plastic housing of the embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the bottom of the plastic housing of the embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the tail needle of the embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the threaded sleeve of the embodiment of the utility model;

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the sleeve seat of the embodiment of the utility model;

[0027] Fig.10 This is a schematic diagram of the three-dimensional structure of the central conductive column in an embodiment of the utility model;

[0028] Fig.11 This is a schematic diagram of the three-dimensional structure of the detection needle of the embodiment of the utility model;

[0029] Fig.12 This is a schematic diagram of the three-dimensional structure of the fixed terminal of the embodiment of the utility model;

[0030] The numbers in the figure represent:

[0031] 100-Split SMA RF connector;

[0032] 1- plastic shell, 11- tail pin socket, 12- mounting hole, 13- main channel, 14- plug-in slot, 15- accommodating slot, 151- avoidance slot;

[0033] 2-tail needle, 21-first welding portion, 22-conductive tip, 23-first shaft boss, 24-first annular barb;

[0034] 3-threaded sleeve, 31-external thread, 32-third annular barb, 33-annular matching groove;

[0035] 4-plug-in module, 41-central conductive column, 411-first plug-in hole, 412-second plug-in hole, 413-second annular barb, 42-insulating rubber core, 43-sleeve seat, 431-through hole, 432-annular boss, 44-elastic member;

[0036] 5-detection needle, 51-second welding part, 52-fixed angle, 53-profile avoidance groove;

[0037] 6-fixed terminal, 61-fixed body, 62-third welding part, 63-welding piece, 64-L-shaped connecting part;

[0038] 7-Avoidance slot. [Specific implementation method]

[0039] Please refer to Figure 1-Figure 12 The present embodiment is a split SMA RF connector. The split SMA RF connector 100 includes a plastic shell 1, a tail pin 2 arranged at the left end of the plastic shell 1, a threaded sleeve 3 arranged at the right end of the plastic shell 1, a plug-in module 4 elastically slidably arranged inside the threaded sleeve 3 and used to achieve plug-in electrical conduction with the tail pin 2, a detection pin 5 arranged in the bottom wall of the plastic shell 1, and a fixed terminal 6 arranged on the front and rear sides of the plastic shell 1 and fixed on the threaded sleeve 3 at the right end.

[0040] The plastic housing 1 is made of plastic and can be directly injection molded. Compared with traditional metal materials, it is lighter and easier to mold.

[0041] The plastic shell 1 includes a tail pin socket 11 for mounting the tail pin 2 at the left end, a mounting hole 12 for mounting the threaded sleeve 3 and the plug-in module 4 at the right end, a main channel 13 connecting the tail pin socket 11 and the mounting hole 12, a plug-in slot 14 for mounting the detection pin 5 and connected to the main channel 13 at the bottom, and accommodating slots 15 for mounting the fixed terminal 6 at the front and rear sides.

[0042] The tail needle 2 is a stepped shaft, and the tail needle 2 includes a first welding portion 21 extending from the side of the plastic shell 1 at the left end, a conductive tip 22 for plugging into the plug-in module 4 at the right end, a first shaft boss 23 arranged in the middle for abutting against the channel wall of the main channel 13 to achieve axial limitation, and a first annular barb 24 arranged between the first welding portion 21 and the first shaft boss 23 and for being inserted into the plastic shell 1. The first shaft boss 23 is abutted against the side wall inside the plastic shell 1, which can limit the tail needle 2 from moving to the left, and the first annular barb 24 is set to limit the tail needle 2 from moving to the right. Therefore, the first shaft boss 23 and the first annular barb 24 set on the tail needle 2 can realize the positioning and fixed installation of the tail needle 2 and the plastic shell 1, and the installation reliability is higher.

[0043] The outer periphery of the threaded sleeve 3 is provided with an external thread 31, so as to realize threaded matching installation with a male connector (not shown in the figure). The outer periphery of the threaded sleeve 3 is provided with a third annular barb 32 which is inserted into the inside of the plastic housing 1, and the third annular barb 32 can realize the fixed installation of the threaded sleeve 3 and the plastic housing 1.

[0044] The plug-in module 4 includes a central conductive column 41 which is arranged corresponding to the tail pin 2 and can be plugged in and electrically connected with the tail pin 2, an insulating rubber core 42 wrapped around the outer periphery of the central conductive column 41, a sleeve seat 43 which is arranged at the left end of the insulating rubber core 42 and can be slidably sleeved on the outer periphery of the conductive tip 22, and an elastic member 44 which is supported between the first shaft boss 23 of the tail pin 2 and the sleeve seat 43.

[0045] The central conductive column 41 includes a first plug hole 411 for inserting the conductive tip 22 of the tail pin 2, a second plug hole 412 for inserting the male connector (not shown) and a second annular barb 413 for inserting into the insulating rubber core 42. The second annular barb 413 can make the central conductive column 41 and the insulating rubber core 42 installed and fixed to form a whole. When the male connector (not shown) is inserted, the central conductive column 41 moves to the left together with the insulating rubber core 42. The left end of the central conductive column 41 is set inside the insulating rubber core 42, and the right end is set flush with the insulating rubber core 42. The axis of the central conductive column 41 is on the same horizontal line as the axis of the tail pin 2.

[0046] The insulating rubber core 42 is a stepped shaft, and an annular matching groove 33 corresponding to the stepped shaft of the insulating rubber core 42 is arranged inside the left end of the threaded sleeve 3. When the plug-in module 4 moves left and right, the second shaft boss 421 of the stepped shaft abuts against the groove wall of the annular matching groove 33 to limit the plug-in module 4.

[0047] The sleeve seat 43 includes an internal through hole 431 for the tail needle 2 to extend out and an annular boss 432 for the insulating rubber core 42 to abut against. The conductive tip 22 of the tail needle 2 extends out of the right side of the annular boss 432, so the left end of the central conductive column 41 is arranged inside the insulating rubber core 42, and a clearance groove 7 for the insertion depth of the tail needle 2 is reserved between the left end of the insulating rubber core 42 and the left end of the central conductive column 41; the sleeve seat 43 is made of conductive metal material, and the sleeve seat 43 can be movably arranged left and right on the outer periphery of the conductive tip 22, and the sleeve seat 43 is arranged in contact with the outer wall of the conductive tip 22.

[0048] In this embodiment, the elastic member 44 is a spring and is sleeved on the outer periphery of the tail pin 2; one end of the spring abuts against the first axial boss 23 of the tail pin 2, and the other end abuts against the annular boss 432. When the male connector (not shown in the figure) is inserted, the insulating rubber core 42 is pressed to move to the left and abut against the annular boss 432, and the sleeve seat 43 is pressed to move to the left, the spring is compressed, and the center conductive column 41 is plugged into contact with the tail pin 2, thereby realizing the connection and conduction between the split SMA RF connector 100 and the male connector (not shown in the figure).

[0049] The detection needle 5 includes a second welding portion 51, two fixed corners 52 extending forward and upward from the second welding portion 51 and used to be inserted into the plug-in slot 14, and a contoured avoidance groove 53 arranged between the two fixed corners 52 and arranged in a contoured manner with the outer periphery of the insulating rubber core 42. The detection needle 5 extends from the plug-in slot 14 at the bottom of the plastic housing 1 into the main channel 13 and is sleeved on the outer periphery of the insulating rubber core 42. When the male connector (not shown in the figure) is not inserted, one side of the detection needle 5 abuts against the annular boss 432 of the sleeve seat 43 and the other side abuts against the groove wall of the plug-in slot 14. The fixed corner 52 is provided with a fixed barb that is inserted into the bottom of the plastic housing 1, so as to realize the fixed installation of the detection needle 5 and the plastic housing 1.

[0050] The fixed terminal 6 includes a fixed body 61, two third welding parts 62 extending downward from the left and right sides of the fixed body 61, a welding piece 63 arranged on the right front side of the fixed body 61 and welded and fixed to the threaded sleeve 3, and an L-shaped connecting part 64 connecting the fixed body 61 and the welding piece 63. The plastic shell 1 is provided with an avoidance groove 151 for avoiding the welding piece 63 at the position where the welding piece 63 is located. The threaded sleeve 3 is arranged in the same shape as the welding piece 63 at the position where the welding piece 63 is located. In the present embodiment, the welding piece 63 is a planar structure and is vertically welded to the outer periphery of the threaded sleeve 3. Therefore, the threaded sleeve 3 is also arranged in a planar structure at the position where the welding piece 63 is located, so as to facilitate the welding between the welding piece 63 and the threaded sleeve 3; the accommodating groove 15 is arranged in the same shape as the fixed terminal 6, the front and rear two fixed bodies 61 are clamped in the accommodating groove 15, and the welding piece 63 is welded to the outer periphery of the threaded sleeve 3, which can not only enhance the overall strength of the split SMA RF connector 100, but also the two welding pieces 63 are clamped in the avoidance groove 151 of the plastic shell 1, which can limit the rotation of the threaded sleeve 3 in the plastic shell 1, thereby realizing the stable installation between the threaded sleeve 3 and the male connector (not shown in the figure).

[0051] When a split SMA RF connector 100 provided by the present solution is used, the internal thread of the male connector (not shown in the figure) cooperates with the external thread 31 of the threaded sleeve 3 and is tightened to the left, and the pin of the male connector (not shown in the figure) and the second plug-in hole 412 of the central conductive column 41 are plugged in and matched and connected, so that the insulating rubber core 42 is moved to the left by pressure and abuts against the annular boss 432 of the sleeve seat 43, and the sleeve seat 43 is moved to the left by pressure, and the spring is compressed, and the conductive tip 22 of the tail pin 2 is inserted into the first plug-in hole 411 of the central conductive column 41 to achieve plug-in matching and conduction, thereby realizing the connection and conduction between the split SMA RF connector 100 and the male connector (not shown in the figure); when the male connector (not shown in the figure) is not inserted, the sleeve seat 43 is reset to contact with the detection pin 5, thereby realizing the contact and conduction between the detection pin 5 and the tail pin 2.

[0052] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A split SMA radio frequency connector, characterized in that: It includes a plastic shell, a tail pin arranged at the left end of the plastic shell, a threaded sleeve arranged at the right end of the plastic shell, a plug-in module elastically slidably arranged inside the threaded sleeve and used to achieve plug-in electrical conduction with the tail pin, a detection pin arranged in the bottom wall of the plastic shell, and a fixed terminal arranged on the front and rear sides of the plastic shell and fixed on the threaded sleeve at the right end.

2. A split SMA radio frequency connector as claimed in claim 1, characterized in that: The plastic shell includes a tail pin socket arranged at the left end for installing the tail pin, a mounting hole arranged at the right end for installing the threaded sleeve and the plug-in module, a main channel arranged inside for connecting the tail pin socket and the mounting hole, a plug-in slot arranged at the bottom for installing the detection pin and connected to the main channel, and accommodating slots arranged on the front and rear sides for installing the fixed terminal.

3. A split SMA radio frequency connector as claimed in claim 2, characterized in that: The tail needle includes a first welding portion extending from the side of the plastic shell at the left end, a conductive tip at the right end for plugging into the plug-in module, a first axial boss arranged in the middle for supporting the channel wall of the main channel for axial limitation, and a first annular barb arranged between the first welding portion and the first axial boss and for being inserted into the plastic shell.

4. A split SMA radio frequency connector as claimed in claim 3, characterized in that: The plug-in module includes a central conductive column arranged corresponding to the tail pin and capable of realizing electrical connection with the tail pin through plugging, an insulating rubber core wrapped around the outer periphery of the central conductive column, a sleeve seat arranged at the left end of the insulating rubber core and slidably sleeved on the outer periphery of the conductive tip, and an elastic member supported between the first shaft boss and the sleeve seat.

5. A split SMA radio frequency connector as claimed in claim 4, characterized in that: The central conductive column includes a first plug hole arranged at the left end for inserting the conductive tip, a second plug hole arranged at the right end for inserting the male connector, and a second annular barb arranged in the middle for inserting into the insulating rubber core; the left end of the central conductive column is arranged inside the insulating rubber core and a clearance groove is reserved between the left end of the insulating rubber core and the left end of the central conductive column for the insertion depth of the tail pin.

6. A split SMA radio frequency connector as claimed in claim 4, characterized in that: The left end of the threaded sleeve is provided with an annular matching groove corresponding to the stepped shaft of the insulating rubber core, and the outer periphery of the threaded sleeve is provided with an external thread matching the male connector and a third annular barb inserted into the plastic shell.

7. A split SMA radio frequency connector as claimed in claim 4, characterized in that: The sleeve seat comprises a through hole arranged inside for the tail pin to extend out and an annular boss for the insulating rubber core to abut against.

8. A split SMA radio frequency connector as claimed in claim 4, characterized in that: The elastic member is a spring, and the spring is sleeved on the outer circumference of the tail needle.

9. A split SMA radio frequency connector as claimed in claim 4, characterized in that: The detection needle includes a second welding portion, two fixed corners extending forward and upward from the second welding portion and used to be inserted into the plug-in slot, and a contoured avoidance slot arranged between the two fixed corners and contoured to the outer periphery of the insulating rubber core.

10. The split SMA radio frequency connector according to claim 1, characterized in that: The fixed terminal includes a fixed body, two third welding parts extending downward from the left and right sides of the fixed body, a welding piece arranged on the right front side of the fixed body and welded and fixed with the threaded sleeve, and an L-shaped connecting part connecting the fixed body and the welding piece; the plastic shell is provided with an avoidance groove for avoiding the welding piece.

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