Radio frequency coaxial connector

Abstract

The utility model relates to the technical field of connector, especially in a kind of radio frequency coaxial connector.The radio frequency coaxial connector includes main part and split part, the main part includes by outer to inside sequentially arranged first metal shell, first insulator and first pin, and the first pin is provided with first insertion cavity towards one end of coaxial line;The split part includes coaxially distributed second metal shell, second insulator and second pin, and one end of the coaxial line sequentially passes through second metal shell and second insulator and is welded with the second pin;The split part is inserted in the first metal shell and is close to one end of the first insertion cavity, and the second pin is inserted in the first insertion cavity.Based on this, the radio frequency coaxial connector of the utility model can avoid or reduce the probability of deformation or damage of second insulator, improve the yield of radio frequency coaxial connector.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to an radio frequency coaxial connector. Background Technology

[0002] Radio frequency (RF) coaxial connectors are key components for transmitting RF signals. They are typically mounted on cables or equipment to achieve electrical connections or disconnections. These connectors operate at high frequencies and are designed to maintain signal quality while providing good electromagnetic shielding to reduce interference during signal transmission. They are widely used in various fields, such as wireless communications, broadcasting, radar systems, medical equipment, satellite communications, and test and measurement instruments.

[0003] A typical RF coaxial connector consists of a housing, an insulator, and pins arranged sequentially from the outside in. One end of the pin connects to the coaxial cable, and the other end connects to the mating connector. During the assembly of the housing, insulator, pins, and coaxial cable, existing structures and assembly methods can easily lead to changes in the shape and size of the insulator. These changes affect the high-frequency performance of the RF coaxial connector. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an RF coaxial connector.

[0005] To solve the above-mentioned technical problems, the present invention provides a radio frequency coaxial connector, comprising a main body and a split part. The main body includes a first metal shell, a first insulator, and a first pin arranged sequentially from the outside to the inside. The first pin has a first cavity at one end facing the coaxial line. The split part includes a second metal shell, a second insulator, and a second pin arranged coaxially. One end of the coaxial line passes through the second metal shell and the second insulator sequentially and connects to the second pin. The split part is inserted into the first metal shell at one end near the first cavity, and the second pin is inserted into the first cavity.

[0006] Furthermore, the second insertion pin elastically abuts against the first insertion cavity;

[0007] The cavity wall of the first insertion cavity is provided with at least one first partition slit, which extends through the cavity wall of the first insertion cavity in the direction of the second insertion pin. The first partition slit makes the cavity wall of the first insertion cavity have radial elasticity; or, the inner wall of the first insertion cavity is provided with a first elastic element with radial elastic force.

[0008] Furthermore, a second cavity is provided at the end of the first pin opposite to the first cavity, and the second cavity is used to engage with the mating end of the mating connector.

[0009] Furthermore, the cavity wall of the second insertion cavity has at least one second partition slit, the second partition slit extending through the cavity wall of the second insertion cavity to the end away from the first insertion cavity, the second partition slit giving the cavity wall of the second insertion cavity radial elasticity; or

[0010] The inner wall of the second insertion cavity is provided with a second elastic element having radial elastic force.

[0011] Furthermore, the first metal housing has a first cavity for assembling the first insulator and the first pin, and a second cavity for assembling the split portion and axially communicating with the first cavity.

[0012] The inner wall of the first cavity is provided with a first forward stop portion for restricting the first insulator from moving forward toward the second cavity, and the inner wall of the first cavity is also provided with a first backward stop portion for restricting the first insulator from moving backward away from the second cavity.

[0013] Furthermore, the first cavity has a small cavity segment close to the second cavity and a large cavity segment away from the second cavity, and a first step between the small cavity segment and the large cavity segment forms the first forward stop portion;

[0014] The first insulator has a first forward engagement portion formed at the position corresponding to the first forward stop portion, and the first forward engagement portion is configured as a second step that engages with the first step for limiting; the first backward stop portion is configured as a first limiting protrusion ring arranged around the inner wall of the first cavity, and the first limiting protrusion ring has a forward-facing first barb portion; the outer convex surface of the first limiting protrusion ring has a plurality of first recesses distributed circumferentially and a plurality of first protrusions distributed alternately with the plurality of first recesses.

[0015] Furthermore, the second cavity has a second forward stop portion for restricting the forward movement of the split portion toward the first cavity; the second cavity has a small cavity segment close to the first cavity and a large cavity segment away from the first cavity, and a third step between the small cavity segment and the large cavity segment forms the second forward stop portion; the second metal shell has a second forward engagement portion formed at the position corresponding to the second forward stop portion, and the second forward engagement portion is configured as a fourth step that engages with the third step for limiting;

[0016] The second pin has an axially arranged receiving cavity for accommodating the end of the coaxial line. A welding process hole is provided on the outer wall of the second pin. A limiting stage is also provided at the end of the second pin facing the second insulator to prevent the second pin from being over-inserted into the first cavity. The cross-sectional dimension of the limiting stage is larger than the cross-sectional dimension of the first cavity.

[0017] Furthermore, the first insulator has a third cavity extending along the axial direction, the third cavity having a small cavity segment close to the second cavity and a large cavity segment away from the second cavity, a fifth step being formed between the small cavity segment and the large cavity segment, the platform of the fifth step being configured as an inclined surface inclined towards the small cavity segment and towards the axial direction;

[0018] The first pin has a sixth step that mates with the fifth step. The outer peripheral surface of the first pin is provided with a second rearward stop portion. The second rearward stop portion is used to press the first insulator outward to deform it and then engage with the second rearward stop portion in a concave-convex limiting fit.

[0019] Furthermore, the second rearward stop portion is configured as a second limiting protrusion ring arranged around the first insert pin, the second limiting protrusion ring having a rearward second barb portion.

[0020] Furthermore, the outer convex surface of the second limiting protrusion ring has a plurality of portions distributed circumferentially and a plurality of second protrusions distributed alternately with the plurality of second concave portions.

[0021] In summary, the RF coaxial connector of this utility model has at least the following beneficial effects: (1) The pins of the original split part are improved by changing the pins of the original split part to the first pin of the main body of this utility model; based on this improvement, the assembly method is modified accordingly, and the first pin is first assembled with the first metal shell and the first insulator; this solves the problem of the huge thrust generated by the original RF coaxial connector assembly method, which requires first coaxially assembling the pin with the second insulator and the second metal shell, and then squeezing it forward into the first metal shell, thereby avoiding deformation or damage to the second insulator due to the thrust. (2) Based on the improvement in point (1), the second end of the first pin (the end facing the split part) is configured as a first cavity for accommodating the second pin; and a second pin is added to the split part and inserted into the first cavity, so that the second pin, the second insulator and the second metal shell are coaxially distributed, and the coaxial line passes through the second metal shell and the second insulator and is connected to the second pin. With this design, when installing the split part, it is only necessary to ensure that the second pin is inserted into the first cavity. The second pin and the first cavity make elastic contact. Therefore, the thrust applied to the split part is much smaller than the original thrust. This thrust will not cause deformation or damage to the second insulator or will greatly reduce the probability of deformation or damage to the second insulator, thereby improving the yield of the RF coaxial connector. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0023] Figure 1 This is a schematic diagram of one embodiment of an RF coaxial connector.

[0024] Figure 2 yes Figure 1 A schematic diagram of the main body of the structure.

[0025] Figure 3 yes Figure 1 A schematic diagram of the middle split section.

[0026] Figure 4 This is a structural schematic diagram of an embodiment of the radio frequency coaxial connector of this utility model.

[0027] Figure 4a yes Figure 4 A magnified schematic diagram of part C in the middle.

[0028] Figure 5 This is a schematic diagram of the main body of an embodiment of the radio frequency coaxial connector of this utility model.

[0029] Figure 6 yes Figure 5 A schematic diagram of the structure of the first metal shell.

[0030] Figure 7 yes Figure 5 A schematic diagram of the structure of the first insulator.

[0031] Figure 8 This is a schematic diagram of the structure of the first pin in one embodiment of the radio frequency coaxial connector of this utility model.

[0032] Figure 9 yes Figure 8 A longitudinal sectional view of the first pin in the middle.

[0033] Figure 10 This is a schematic diagram of the structure of the split part in one embodiment of the radio frequency coaxial connector of this utility model.

[0034] Figure 11 This is a flowchart of an embodiment of the assembly method of the radio frequency coaxial connector of this utility model.

[0035] The diagrams in the instruction manual are labeled as follows:

[0036] Main components A, A'; First metal casing 100, 100'; First cavity 110; First forward stop 111; First step 111a; First rearward stop 112; First limiting protrusion 112a; First barb 112b; First annular groove 113; Second cavity 120; Second forward stop 121; Third step 121a; Shoulder 130; External thread 140; First insulator 200, 20 0'; First forward mating part 210; Second step 211; Third cavity 220; Third cavity 220; Fifth step 230; First insert pin 500; First insertion cavity 501; First partition 501a; Second insertion cavity 502; Second partition 502a; Sixth step 510; Second rearward stop part 520; Second limiting protrusion ring 521; Second concave part 521a; Second convex part 521b; Second annular groove 530;

[0037] The following components are included: split parts B and B'; second metal outer shell 300 and 300'; second forward mating part 310; fourth step 311; second insulator 400 and 400'; pin 500'; second pin 600; welding process hole 601; receiving cavity 610; limiting stage 620.

[0038] Coaxial line C. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The following disclosure provides various embodiments or examples of different features for implementing this utility model. Specific examples of components and arrangements will be described below to simplify the utility model. Of course, these are merely examples and are not intended to limit the utility model. For example, in the following description, forming a first component above or on a second component may include embodiments where the first and second components are in direct contact, or embodiments where other components may be formed between the first and second components such that the first and second components are not in direct contact. Additionally, reference numerals and / or characters may be repeated in various instances of the utility model. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations.

[0041] Furthermore, spatial relation terms such as "below," "under," "below," "above," and "above" may be used herein to readily describe the relationship between one element or component and another element (or component) or component (or component) as shown in the figure. In addition to the orientations shown in the figure, spatial relation terms will encompass various different orientations of the device in use or operation. The device may be positioned in other ways (rotated 90 degrees or in other orientations) and will be interpreted accordingly through the spatial relation descriptors used herein.

[0042] Furthermore, the technical parts described in this utility model and the appended claims are mainly the improved technical parts of this utility model, and do not limit the object protected by this utility model to only having these technical parts. Other known necessary components (structures and / or methods) and / or non-essential components of the protected object, other than the technical parts described in this utility model and the appended claims, are not included in this utility model and the appended claims because they do not involve the improvement scope of this utility model. However, this does not mean that the object protected by this utility model does not possess these known components.

[0043] Please see Figures 1 to 3The radio frequency coaxial connector includes a main body A' and a separate part B'. The main body A' includes a first metal housing 100' and a first insulator 200' disposed within the first metal housing 100'. The separate part B' includes a second metal housing 300', a second insulator 400', and a pin 500' arranged sequentially along the axial direction. One end of a coaxial line C passes through the second metal housing 300' and the second insulator 400' in sequence and is then welded to the pin 500'. The coaxial line C is also welded to the second metal housing 300'. During the process of pressing the separate part B' into the main body A', since the pin 500' needs to be tightly fitted with the first insulator 200' to achieve assembly limitation between the two, a large pushing force needs to be applied to the second metal housing 300'. The second metal housing 300' and the second insulator transmit this pushing force to the pin 500', thereby assembling the pin 500' into the first insulator 200'. Under this thrust, the second insulator 400' is prone to deformation (e.g., thinning). The thickness of the second insulator 400' is the high-frequency compensation dimension of the RF coaxial connector. Changes in the thickness of the second insulator 400' cause the high-frequency performance to fail to meet design requirements, thereby affecting the yield of the RF coaxial connector.

[0044] Please see Figure 4 and Figure 4a , Figure 4 This is a structural schematic diagram of an embodiment of the radio frequency coaxial connector of this utility model. Figure 4a yes Figure 4 A magnified schematic diagram of a portion C in the middle. Based on Figures 1 to 3 The illustrated RF coaxial connector has defects. This embodiment improves upon these defects to address the issue of deformation of the second insulator during assembly, thereby increasing yield. In the illustrated embodiment, the RF coaxial connector includes a main body A and a separate body B. The main body A includes a first metal shell 100, a first insulator 200, and a first pin 500 arranged sequentially from the outside to the inside. The first pin 500 has a first cavity 501 (see [link to original document]) facing the coaxial line C. Figure 9The split portion B includes a second metal shell 300, a second insulator 400, and a second pin 600, all coaxially distributed. One end of the coaxial line C passes through the second metal shell 300 and the second insulator 400 in sequence and connects to the second pin 600. The split portion B is inserted into the first metal shell 100 near the first insertion cavity 501, and the second pin 600 is inserted into the first insertion cavity 501. The first insulator 200, the first pin 500 inserted therein, and the split portion B are coaxially inserted into the first metal shell 100. The coaxial line C has a wire core, an inner insulation layer, a shielding layer, and an outer insulation layer distributed sequentially from the inside out. The second pin 600 is soldered to the wire core, and the second insulator 400 abuts against the inner insulation layer, the shielding layer, and the outer insulation layer, isolating the shielding layer from the second pin 600. The shielding layer is in contact with the second metal shell 300, so that both are grounded together with the first metal shell 100.

[0045] In this embodiment, for clarity and brevity, the two axial ends of the RF coaxial connector are referred to as the first end and the second end. Thus, there are the first and second ends of the first metal housing 100, the first and second ends of the first insulator 200, the first and second ends of the first pin 500, and the first and second ends of the split portion B and its components. The first insulator 200 is inserted into the first metal housing 100 and is positioned close to the first end, while the split portion B is inserted into the first metal housing 100 and is positioned close to the second end. The first insulator 200 is inserted into the first metal housing 100 from the first end toward the second end; therefore, relative to the first insulator 200, the direction toward the second end is considered forward, and the direction toward the first end is considered backward. The split portion B is inserted into the first metal housing 100 from the second end toward the first end; therefore, relative to the split portion B, the direction toward the first end is considered forward, and the direction toward the second end is considered backward.

[0046] Please see Figure 5 and Figure 6The first metal housing 100 has a first cavity 110 for assembling the first insulator 200 and the first pin 500, and a second cavity 120 for assembling the split portion B and axially communicating with the first cavity 110. The first cavity 110 is located near a first end of the first metal housing 100, and the second cavity 120 is located near a second end of the first metal housing 100. In this embodiment, the outer walls of the first insulator 200 and the split portion B are tightly fitted to the inner wall of the first metal housing 100, that is, the outer walls of the first insulator 200 and the split portion B are respectively tightly fitted to the inner walls of the first cavity 110 and the second cavity 120. It is understood that this tight-fitting implementation is only for illustrative purposes, and the mating structure or mating method of the first insulator 200 and the split portion B with the first metal housing 100 can be changed depending on design requirements and manufacturing considerations.

[0047] Based on the aforementioned tight fit, the inner wall of the first cavity 110 is provided with a first forward stop portion 111 for restricting the first insulator 200 from moving forward toward the second cavity 120, and the inner wall of the first cavity 110 is also provided with a first backward stop portion 112 for restricting the first insulator 200 from moving backward away from the second cavity 120. The first forward stop portion 111 is closer to the second end direction, and the first backward stop portion 112 is closer to the first end direction. Exemplarily, the first forward stop portion 111 can be integrally formed with the first cavity 110 by setting the cross-sectional dimensions of the first cavity 110. For example, in designing and manufacturing the first metal casing 100, the first cavity 110 has a small cavity segment (with a smaller inner diameter or cross-sectional size) close to the second cavity 120 and a large cavity segment (with a larger inner diameter or cross-sectional size compared to the aforementioned small cavity segment) far from the second cavity 120. The first step 111a between the small cavity segment and the large cavity segment forms the first forward stop portion 111. Exemplarily, the first forward stop portion 111 can also be configured as a limiting protrusion ring arranged around the inner wall of the first cavity 110, or as a limiting ring groove arranged around the inner wall of the first cavity 110, or as a plurality of limiting protrusions arranged around the inner wall of the first cavity 110, etc. Exemplarily, the first backward stop portion 112 can be configured as a first limiting protrusion ring 112a arranged around the inner wall of the first cavity 110, and the first limiting protrusion ring 112a preferably has a forward-facing first barb portion 112b. The outer convex surface of the first limiting protrusion ring 112a can be configured to have a plurality of first recesses distributed circumferentially and a plurality of first protrusions (not shown) that are alternately distributed with the plurality of first recesses. For example, the first rearward stop portion 112 can also be configured as a limiting protrusion distributed around the inner wall of the first cavity 110, or as a plurality of limiting grooves provided around the inner wall of the first cavity 110, etc.

[0048] A first annular groove 113 is provided on the inner wall of the first cavity 110 near the first limiting protrusion 112a. The first annular groove 113 is located on the front side of the first limiting protrusion 112a (near the second end direction). The design of the first annular groove 113 can meet the high-frequency compensation design requirements.

[0049] The lateral dimension (cross-sectional dimension, e.g., inner diameter) of the second cavity 120 can be configured to be smaller than the lateral dimension (cross-sectional dimension, e.g., inner diameter) of the first cavity 110. The second cavity 120 has a second forward stop 121 for restricting the forward movement of the split portion B toward the first cavity 110. The second forward stop 121 can adopt the same or similar design or structure as the first forward stop 111; for example, the second forward stop 121 can be integrally formed with the second cavity 120 by setting the cross-sectional dimension of the second cavity 120. For example, the second cavity 120 has a small cavity segment near the first cavity 110 and a large cavity segment away from the first cavity 110, with a third step 121a between the small cavity segment and the large cavity segment forming the second forward stop 121.

[0050] To facilitate the assembly of the RF coaxial connector, the outer periphery of the first metal housing 100 is further provided with a shoulder 130. The shoulder 130 is used to prevent the RF coaxial connector from being over-assembled and to abut against the assembly object, such as the housing of an electronic device. The first metal housing 100 is also provided with an external thread 140, which is located at the end of the first metal housing 100 facing the assembly direction, and is used for threaded connection with the assembly object.

[0051] Please see Figure 7 The first insulator 200 is inserted into the first cavity 110 towards the second end. Corresponding to the first forward stop portion 111, the first insulator 200 has a first forward mating portion 210 formed at the position corresponding to the first forward stop portion 111. When the first forward stop portion 111 is a first step 111a, the first forward mating portion 210 is configured as a second step 211 that limits and engages with the first step 111a. When the first forward stop portion 111 is a limiting protrusion, the first forward mating portion 210 corresponds to a limiting ring groove. When the first forward stop portion 111 is a limiting ring groove, the first forward mating portion 210 corresponds to a limiting protrusion. When the first forward stop portion 111 consists of several limiting protrusions, the first forward mating portion 210 corresponds to a limiting groove that engages with the several limiting protrusions. This configuration allows the first insulator 200 to withstand a large thrust from the loading fixture when it is inserted into the first cavity 110, and it will not continue to move forward after it is assembled in place.

[0052] Corresponding to the first rearward stop portion 112, when the first rearward stop portion 112 is the first limiting protrusion 112a, the first insulator 200, based on its own material, does not need to have a corresponding protrusion or recess. During the insertion process of the first insulator 200, the outer peripheral surface of the first insulator 200 is deformed inward (axial direction) by the compression of the first limiting protrusion 112a, so that after the first insulator 200 and the first pin 500 are assembled in place, the first insulator 200 passively forms an annular groove that matches the first limiting protrusion 112a. Based on this design, after the first insulator 200 is assembled into the first cavity 110 and the first pin 500 is assembled into the first insulator 200, the first insulator 200 is squeezed by the first limiting protrusion 112a to form an inwardly recessed annular groove. In summary, the first annular groove 113 utilizes the characteristics of the material of the first insulator 200 itself (such as plastic, which has a certain degree of softness and elasticity). On the one hand, it realizes the high-frequency compensation function; on the other hand, it increases the limiting effect with the first insulator 200; and on the other hand, it reduces the use of molding materials, thereby reducing the complexity of the internal structure.

[0053] The first insulator 200 has a third cavity 220 extending along its axial direction, which is used to assemble the first pin 500. The third cavity 220 has a small segment near the second cavity 120 and a large segment away from the second cavity 120. A fifth step 230 is formed between the small segment and the large segment. The platform of the fifth step 230 is configured as an inclined surface tilted towards the small segment and towards the axial direction. The fifth step 230 serves as a forward stop structure for the first pin 500. Other exemplary structures with the same or similar structure or function as the first forward stop portion 111 and the second forward stop portion 121 described above can also be used, which will not be elaborated here.

[0054] Please see Figure 8 and Figure 9 The first pin 500 is inserted into the first insulator 200 and into the third cavity 220 of the first insulator 200. For the fifth step 230 provided within the first insulator 200, the first pin 500 has a sixth step 510 that engages with the fifth step 230 in a forward limiting manner. A second rearward stop portion 520 protrudes from the outer peripheral surface of the first pin 500, with the second rearward stop portion 520 protruding towards the first end, and the sixth step 510 and the fifth step 230 protruding towards the second end. The second rearward stop portion 520 is used to press the first insulator 200 outward to deform it, and then engage with it in a concave-convex limiting manner.

[0055] The second rearward stop portion 520 is configured as a second limiting protrusion 521 surrounding the first insert pin 500. The first limiting protrusion 112a may adopt a similar structure and / or principle to the first limiting protrusion 112a. For example, the second limiting protrusion 521 has a rearward second barb portion, and the outer convex surface of the second limiting protrusion 521 has a plurality of second recesses 521a distributed circumferentially and a plurality of second protrusions 521b distributed alternately with the plurality of second recesses 521a.

[0056] In the illustrated embodiment, a second annular groove 530 is provided on the first pin 500 in front of the second limiting protrusion 521, having the same or similar structure and / or function as the first annular groove 113. The second annular groove 530 is arranged around the outer periphery of the first pin 500. The second limiting protrusion 521, the second annular groove 530, and the first annular groove 113 are positioned correspondingly in the axial direction.

[0057] The first pin 500 has a first cavity 501 and a second cavity 502 at its second and first ends, respectively. The first cavity 501 and the second cavity 502 extend through the first pin 500 in opposite directions, and their opposite ends are not interconnected. The first cavity 501 is used to insert the first pin 500 of the split part B, and the second cavity 502 is used to insert the mating end of the connector. It is understood that, depending on different design requirements, the first end of the first pin 500 may not have a second cavity 502. In this case, the first end of the first pin 500 can be used as a male connector inserted into the mating end of the connector. When the first end of the first pin 500 is used as a male connector, it can be exposed at the first end of the first insulator 200.

[0058] To increase the contact force between the first pin 500 and the second pin 600, the first cavity 501 of the first pin 500 can be designed to elastically abut against the second pin 600. For example, the cavity wall of the first cavity 501 can be provided with at least one first partition slit 501a (e.g., two first partition slits 501a), the first partition slit 501a extending through the cavity wall of the first cavity 501 towards the second pin 600, giving the cavity wall of the first cavity 501 radial elasticity. Alternatively, the inner wall of the first cavity 501 can be provided with a first elastic element having radial elasticity. Similarly, the second cavity 502 of the first pin 500 can be designed to elastically abut against the mating end of the connector. For example, the cavity wall of the second insertion cavity 502 may have at least one second partition slit 502a (e.g., two second partition slits 502a), the second partition slit 502a extending through the cavity wall of the second insertion cavity 502 to the end away from the first insertion cavity 501, the second partition slit 502a giving the cavity wall of the second insertion cavity 502 radial elasticity. As another example, the inner wall of the second insertion cavity 502 may be provided with a second elastic member having radial elastic force.

[0059] The second metal shell 300, the second insulator 400, and the second pin 600 of the split portion B are distributed sequentially from the second end to the first end, with the second insulator 400 confined between the second metal shell 300 and the second pin 600. The coaxial cable C passes sequentially through the second metal shell 300 and the second insulator 400 towards the first end and is then inserted into the second pin 600, and the coaxial cable C is connected (e.g., welded) to both the second metal shell 300 and the second pin 600.

[0060] Based on the second forward stop portion 121 described above, the second metal housing 300 has a second forward engaging portion 310 formed at a position corresponding to the second forward stop portion 121. As one example, the second forward engaging portion 310 is configured to engage with a fourth step 311 that limits the third step 121a. When the fourth step 311 of the second metal housing 300 abuts against the third step 121a, the second metal housing 300 is assembled in place. The rear section of the outer wall of the second metal housing 300 located at the fourth step 311 is tightly engaged with the inner wall of the first metal housing 100.

[0061] Please see Figure 10The second pin 600 has a receiving cavity 610 axially arranged for receiving the end of the coaxial line C. The outer wall of the second pin 600 is provided with a welding process hole 601. The end of the second pin 600 facing the second insulator 400 is also provided with a limiting platform 620 for preventing the second pin 600 from being over-inserted into the first insertion cavity 501. The cross-sectional dimension of the limiting platform 620 is larger than the cross-sectional dimension of the first insertion cavity 501.

[0062] Please see Figure 11 The assembly method of the radio frequency coaxial connector of this utility model is as follows:

[0063] S100, Assemble the main body A; this step includes the following sub-steps:

[0064] S101. The first insulator 200 is coaxially installed into the first metal shell 100 (installed into the first cavity 110);

[0065] S102. Insert the first pin 500 into the first insulator 200.

[0066] The assembly method using S101 and S102 is more convenient and has less assembly resistance compared to the method of first inserting the first pin 500 into the first insulator 200 and then inserting the first insulator 200 carrying the first pin 500 into the first metal shell 100. This is because if the first pin 500 is inserted into the first insulator 200 first and then inserted into the first metal shell 100, the first insulator 200 will be subjected to opposing compressive forces from the inside (first pin 500) and the outside (first metal shell 100), causing the first insulator 200 to deform less adaptably and increasing the resistance between the outer wall of the first insulator 200 and the inner wall of the first metal shell 100.

[0067] S200, Assemble the split part B; this step includes the following sub-steps:

[0068] S201. The coaxial cable C is threaded through the second metal housing 300 and welded to it, wherein the core of the coaxial cable C extends forward out of the second metal housing 300;

[0069] S202. The second insulator 400 is sleeved on the outer periphery of one end of the wire core that protrudes from the second metal shell 300;

[0070] S203. Cover the wire core with the second pin 600 and weld it to it; in this step, the wire core is welded to the second pin 600 by means of a welding process hole 601 provided on the outer wall of the second pin 600.

[0071] S300, Assembly steps of separate part B and main part A.

[0072] In this step, the split part B is inserted into the second metal shell 300 and the second pin 600 is inserted into the first cavity 501 of the first pin 500, and the outer wall of the second metal shell 300 is tightly fitted with the inner wall of the first metal shell 100.

[0073] Based on the above embodiments, the radio frequency coaxial connector of this utility model has at least the following beneficial effects:

[0074] (1) The original split part B' pin 500' is improved by replacing the original split part B' pin 500' with the first pin 500 of the main part A in this utility model; based on this improvement, the assembly method is modified accordingly, and the first pin 500 is first assembled with the first metal shell 100 and the first insulator 200; this solves the problem of the huge thrust generated in the original RF coaxial connector assembly method, which requires the pin 500' to be coaxially assembled with the second insulator 400' and the second metal shell 300' before being squeezed forward into the first metal shell 100', thereby avoiding the deformation or damage of the second insulator 400 due to the thrust. (2) Based on the improvement in point (1), the second end of the first pin 500 (the end facing the split part B) is configured as a first cavity 501 to accommodate the second pin 600; then, a second pin 600 is added to the split part B and inserted into the first cavity 501, so that the second pin 600, the second insulator 400 and the second metal housing 300 are coaxially distributed, and the coaxial line C passes through the second metal housing 300 and the second insulator 400 and connects to the second pin 600. With this design, when the split part B is installed, since it is only necessary to ensure that the second pin 600 is inserted into the first cavity 501, and the second pin 600 and the first cavity 501 are in elastic contact, the thrust applied to the split part B (towards the first end) is much smaller than the original thrust. This thrust will not cause the second insulator 400 to deform (become thinner) or be damaged, or it will greatly reduce the probability of the second insulator 400 being deformed or damaged, thereby improving the yield of the RF coaxial connector.

[0075] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A radio frequency coaxial connector, comprising a main body and a separate part, characterized in that: The main body includes a first metal shell, a first insulator, and a first pin arranged sequentially from the outside to the inside. The first pin has a first insertion cavity at one end facing the coaxial axis. The split part includes a second metal shell, a second insulator, and a second pin arranged coaxially. One end of the coaxial axis passes through the second metal shell and the second insulator in sequence and is connected to the second pin. The split part is inserted into the first metal shell at one end near the first insertion cavity, and the second pin is inserted into the first insertion cavity.

2. The RF coaxial connector as described in claim 1, characterized in that: The second insertion pin elastically abuts against the first insertion cavity; The cavity wall of the first insertion cavity is provided with at least one first partition slit, which extends through the cavity wall of the first insertion cavity in the direction of the second insertion pin. The first partition slit makes the cavity wall of the first insertion cavity have radial elasticity; or, the inner wall of the first insertion cavity is provided with a first elastic element with radial elastic force.

3. The RF coaxial connector as described in claim 1, characterized in that: The end of the first pin opposite to the first cavity is provided with a second cavity, which is used to be inserted and mated with the mating end of the connector.

4. The RF coaxial connector as described in claim 3, characterized in that: The cavity wall of the second insertion cavity has at least one second partition slit, which extends through the cavity wall of the second insertion cavity to the end away from the first insertion cavity. The second partition slit gives the cavity wall of the second insertion cavity radial elasticity; or The inner wall of the second insertion cavity is provided with a second elastic element having radial elastic force.

5. The RF coaxial connector as described in claim 1, characterized in that: The first metal housing has a first cavity for assembling the first insulator and the first pin, and a second cavity for assembling the split part and axially communicating with the first cavity; The inner wall of the first cavity is provided with a first forward stop portion for restricting the first insulator from moving forward toward the second cavity, and the inner wall of the first cavity is also provided with a first backward stop portion for restricting the first insulator from moving backward away from the second cavity.

6. The RF coaxial connector as described in claim 5, characterized in that: The first cavity has a small cavity segment close to the second cavity and a large cavity segment away from the second cavity, and a first step between the small cavity segment and the large cavity segment forms the first forward stop portion; The first insulator has a first forward engagement portion formed at the position corresponding to the first forward stop portion, and the first forward engagement portion is configured as a second step that engages with the first step for limiting; the first backward stop portion is configured as a first limiting protrusion ring arranged around the inner wall of the first cavity, and the first limiting protrusion ring has a forward-facing first barb portion; the outer convex surface of the first limiting protrusion ring has a plurality of first recesses distributed circumferentially and a plurality of first protrusions distributed alternately with the plurality of first recesses.

7. The RF coaxial connector as described in claim 5, characterized in that: The second cavity has a second forward stop portion for restricting the forward movement of the split portion toward the first cavity; the second cavity has a small cavity segment close to the first cavity and a large cavity segment away from the first cavity, and a third step between the small cavity segment and the large cavity segment forms the second forward stop portion; the second metal shell has a second forward engagement portion formed at the position corresponding to the second forward stop portion, and the second forward engagement portion is configured to engage with the third step as a fourth step; The second pin has an axially arranged receiving cavity for accommodating the end of the coaxial line. A welding process hole is provided on the outer wall of the second pin. A limiting stage is also provided at the end of the second pin facing the second insulator to prevent the second pin from being over-inserted into the first cavity. The cross-sectional dimension of the limiting stage is larger than the cross-sectional dimension of the first cavity.

8. The RF coaxial connector as described in claim 1, characterized in that: The first insulator has a third cavity extending along the axial direction. The third cavity has a small cavity segment close to the second cavity and a large cavity segment away from the second cavity. A fifth step is formed between the small cavity segment and the large cavity segment. The platform of the fifth step is configured as an inclined surface that is inclined towards the small cavity segment and towards the axial direction. The first pin has a sixth step that mates with the fifth step. The outer peripheral surface of the first pin is provided with a second rearward stop portion. The second rearward stop portion is used to press the first insulator outward to deform it and then engage with the second rearward stop portion in a concave-convex limiting fit.

9. The RF coaxial connector as described in claim 8, characterized in that: The second rearward stop portion is configured as a second limiting protrusion ring arranged around the first insert pin, the second limiting protrusion ring having a rearward second barb portion.

10. The RF coaxial connector as described in claim 9, characterized in that: The outer convex surface of the second limiting protrusion ring has a plurality of second recesses distributed circumferentially and a plurality of second protrusions distributed alternately with the plurality of second recesses.

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