Superfine coaxial connector

Abstract

The utility model discloses a superfine coaxial connector which comprises a shell, an insulator arranged in the shell, a conductive terminal arranged in the insulator and a cable electrically connected with the conductive terminal. The conductive terminal comprises a base body and a contact part arranged at one end of the base body; the shell comprises a supporting part which extends along the conductive terminal and the cable and can support the conductive terminal and the cable, and a cylindrical part which extends from the supporting part along the plugging direction and surrounds the contact part; wherein the cable comprises a core material layer and an outer conductor layer arranged outside the core material layer, the core material layer is connected with the conductive terminal, and the outer conductor layer is welded with the supporting part. According to the superfine coaxial connector, the traditional scheme that the shell and the cable are riveted together is abandoned, and the outer conductor layer of the cable and the connector shell are welded together innovatively, so that the superfine cable can be fixed, and the fixing strength of the superfine cable is ensured.

Description

Technical Field

[0001] This application belongs to the field of antenna equipment technology, and in particular relates to an ultra-fine coaxial connector. Background Technology

[0002] Currently, electronic products such as smart glasses, wireless headphones, and smartwatches require very small coaxial cable connectors, with coaxial cables as thin as 0.5mm. However, in current coaxial connectors, the cable is fixed to the connector housing by crimping, where a flange on the housing is pressed against the cable to secure it. This method of fixing cannot guarantee sufficient strength and has poor reliability when the coaxial cable is thin. Utility Model Content

[0003] The purpose of this application is to provide an ultra-fine coaxial connector to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] An ultra-fine coaxial connector includes a housing, an insulator disposed within the housing, conductive terminals disposed within the insulator, and a cable electrically connected to the conductive terminals; the conductive terminals include a base and a contact portion disposed at one end of the base; the housing includes a support portion extending along the conductive terminals and the cable and supporting the conductive terminals and the cable, and a cylindrical portion extending from the support portion along the insertion direction and surrounding the contact portion;

[0006] The cable includes a core layer and an outer conductor layer disposed outside the core layer. The core layer is connected to the conductive terminal, and the outer conductor layer is welded to the support portion.

[0007] In some embodiments, the support portion includes a first section, a second section, and a third section arranged sequentially along the conductive terminal and the cable, the cylindrical portion being disposed in the first section, and the third section being welded to the outer conductor layer.

[0008] In some embodiments, the third section is provided with a welding groove extending along the cable, the cable passing through both ends of the welding groove, and the outer conductor layer being welded to the welding groove.

[0009] In some embodiments, the ultra-fine coaxial connector further includes:

[0010] A cover plate, which is placed in the welding groove by covering the groove opening of the welding groove, so as to fix the cable in the welding groove.

[0011] In some embodiments, the cover plate is provided with solder addition holes.

[0012] In some embodiments, the welding method is soldering.

[0013] In some embodiments, the contact portion includes a cantilever spaced apart from the base in the insertion direction, and a support section for supporting the cantilever on the base.

[0014] In some embodiments, the support segment extends from the base along the insertion direction, and the cantilever extends from the support segment in a direction parallel to the base.

[0015] In some embodiments, the support section and the cantilever are located at one end of the base, and the cantilever extends to the other end of the base in a direction parallel to the base.

[0016] In some embodiments, the cantilever has an inclined bent section at its root.

[0017] In some embodiments, the insulator covers the conductive terminal and extends from the first section of the support to the second section of the support. The second section has clamping arms on both sides, which press against the insulator to fix the insulator.

[0018] The advantages of this application are:

[0019] Instead of the traditional method of riveting the connector shell to the cable, this innovative approach involves welding the outer conductor layer of the cable to the connector shell. This secures the ultra-fine cable and ensures its stability, while also preventing performance loss caused by riveting deformation. Attached Figure Description

[0020] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the ultra-fine coaxial connector in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the ultra-fine coaxial connector in the embodiments of this application;

[0023] Figure 3 This is an exploded structural diagram of the ultra-fine coaxial connector in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the structure of the conductive terminals in the embodiments of this application;

[0025] Figure 5 This is a side view of the conductive terminal structure in an embodiment of this application;

[0026] Figure 6 This is a side view of another embodiment of the conductive terminal in this application.

[0027] Figure 7 This is a schematic diagram of the structure of another embodiment of the conductive terminal in this application;

[0028] Figure 8 This is a schematic diagram of the structure of the outer shell before assembly in an embodiment of this application;

[0029] Figure 9 This is a schematic diagram showing the disassembled structure of the insulator and conductive terminal in an embodiment of this application;

[0030] Figure 10 This is a schematic diagram of the connection between the ultra-fine coaxial connector and the mating connector in the embodiments of this application;

[0031] Figure 11 This is a schematic diagram of the cross-sectional structure of the ultra-fine coaxial connector and the mating connector in the embodiments of this application;

[0032] Figure 12 This is a schematic diagram of the structure of the docking connector in the embodiment of this application.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 10. Ultra-fine coaxial connector; 101. Solder;

[0035] 110. Outer shell; 111. Support; 111a. First section; 111b. Second section; 111c. Third section; 1111. Welding groove; 1112. Sheet; 1113. Arm; 112. Cylindrical section; 1121. Notch;

[0036] 120. Insulator; 121. Main body; 1211. Receiving cavity; 122. Back cover;

[0037] 130. Conductive terminal; 131. Substrate; 132. Contact portion; 1321. Support section; 1322. Cantilever; 13221. Bending section;

[0038] 140. Cable; 141. Core layer; 142. Insulation layer; 143. Outer conductor layer; 144. Outer sheath;

[0039] 150. Cover plate; 151. Solder addition hole;

[0040] 20. Connector; 210. Cylindrical housing; 220. Center conductor; 230. Insulator. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] This application provides an ultra-fine coaxial connector. For example... Figures 1 to 3 As shown, the ultra-fine coaxial connector 10 includes a housing 110, an insulator 120, conductive terminals 130, and a cable 140. The insulator 120 is disposed within the housing 110, the conductive terminals 130 are disposed within the insulator 120, and the cable 140 is electrically connected to the conductive terminals 130. The insulator 120 insulates the housing 110 from the conductive terminals 130. Figure 10 and Figure 11 As shown, when the ultra-fine coaxial connector 10 of this application is plugged into the mating connector 20, signals can be transmitted between the ultra-fine coaxial connector 10 and the mating connector 20.

[0043] like Figure 4 As shown, the conductive terminal 130 includes a base 131 and a contact portion 132. The contact portion 132 is disposed at one end of the base 131. Figure 2 and Figure 4 As shown, the other end of the base 131 is connected to the cable 140.

[0044] like Figure 3 As shown, the housing 110 includes a support portion 111 and a cylindrical portion 112. The support portion 111 extends along the conductive terminal 130 and the cable 140 and supports the conductive terminal 130 and the cable 140. The cylindrical portion 112 extends from the support portion 111 in the insertion direction. Figure 3 The Z-direction is shown. And as shown... Figure 2 As shown, the cylindrical portion 112 surrounds the contact portion 132 of the conductive terminal 130. When the ultra-fine coaxial connector 10 is connected to the mating connector 20, as... Figure 11 As shown, the cylindrical portion 112 of the housing 110 of the ultra-fine coaxial connector 10 is inserted into the cylindrical housing 210 of the mating connector 20, and the contact portion 132 of the conductive terminal 130 of the ultra-fine coaxial connector 10 is in contact with the center conductor 220 of the mating connector 20. The housing 110 serves as a shield and grounding function, and the conductive terminal 130 is used for signal transmission.

[0045] like Figure 3As shown, the cable 140 includes a core layer 141, an insulation layer 142, an outer conductor layer 143, and an outer sheath 144 arranged sequentially from the inside out. The core layer 141 is connected to the conductive terminal 130 to transmit signals. In this embodiment, the outer conductor layer 143 is welded to the support portion 111 of the housing 110, abandoning the traditional method of riveting the connector housing 110 and the cable 140 together. Instead, the outer conductor layer 143 of the cable 140 is welded to the connector housing 110, which can fix the ultra-fine cable 140, ensure the fixation strength of the ultra-fine cable 140, and avoid performance loss caused by riveting deformation.

[0046] In one embodiment, to accommodate coaxial connectors with ultra-thin cables, the conductive terminal 130 is further improved. The ultra-thin cable 140 results in a lower overall connector profile, reducing the contact distance between the conductive terminal 130 and the center conductor 220 of the mating connector 20. In this embodiment, to ensure effective contact between the conductive terminal 130 and the center conductor 220 of the mating connector 20 while maintaining a lower connector profile, such as… Figure 4 As shown, the contact portion 132 of the conductive terminal 130 is designed to include a support section 1321 and a cantilever 1322. The cantilever 1322 is spaced apart from the base 131 in the insertion direction (Z-direction). When the center conductor 220 of the mating connector 20 contacts the cantilever 1322, the cantilever 1322 has space for elastic movement in the insertion direction (Z-direction), ensuring constant contact with the center conductor 220 of the mating connector 20. This elastic contact can be achieved with a very short distance, even in low-profile connectors with ultra-thin cables. Furthermore, the entire end face of the cantilever 1322 can serve as a contact surface, increasing the contact area compared to existing clamp-type terminals. Figure 4 As shown, the support segment 1321 is used to support the cantilever 1322 on the base 131 and to create a distance between the cantilever 1322 and the base 131. The support segment 1321 extends substantially along the insertion direction (Z direction), thereby creating a distance between the cantilever 1322 and the base 131 to achieve elastic contact.

[0047] In one embodiment, such as Figure 5 As shown, the support section 1321 extends from the base 131 along the insertion direction (Z direction), and the cantilever 1322 extends from the support section 1321 in a direction parallel to the base 131, that is, along the X direction. The contact portion 132 and the base 131 roughly form a U-shape, with the U-shaped opening facing the other end of the base 131.

[0048] Figure 5 As shown, the cantilever 1322 extends towards the other end of the base 131, which can also be understood as extending rearward. In other optional embodiments, such as Figure 6As shown, the cantilever 1322 can also be configured to extend in a direction away from the other end of the base 131, or it can be understood as extending forward.

[0049] In the embodiments of this application, such as Figure 5 As shown, the support section 1321 and the cantilever 1322 are located at one end of the base 131, and the cantilever 1322 extends to the other end of the base 131 in a direction parallel to the base 131, that is, the cantilever 1322 extends to the rear end of the base 131.

[0050] Figure 5 and Figure 6 The contact portion 132 of the conductive terminal 130 can be formed by stamping, bending or other operations on the end of the conductive terminal 130, which is a simple forming method.

[0051] In other embodiments, the cantilever 1322 may also extend to the left or right, i.e., as shown below. Figure 7 As shown, it extends along the Y direction. Figure 7 As shown, cantilever 1322 extends to the left along the Y direction.

[0052] Continue to refer to Figure 5 The cantilever 1322 has an inclined bending section 13221 at its root. The root of the cantilever 1322 refers to the end where the cantilever 1322 connects to the support section 1321. The inclined bending section 13221 not only enhances the elasticity of the cantilever 1322 but also reduces the height of the contact portion 132 of the cantilever 1322. This reduced height allows the mating connector 20 to be closer to the ultra-fine coaxial connector 10, thus lowering the height of the cylindrical portion 112 of the housing 110 and achieving a lower connector profile. Figure 5 As shown, the root of the cantilever 1322 is provided with an inclined section that is inclined at one end toward the base 131, which is the bending section 13221.

[0053] refer to Figure 3 The support portion 111 of the outer casing 110 includes a first section 111a, a second section 111b, and a third section 111c arranged sequentially along the conductive terminal 130 and the cable 140, with a cylindrical portion 112 disposed in the first section 111a. (Combined) Figure 1 and Figure 3 The third section 111c of the support portion 111 is welded to the outer conductor layer 143. Figure 2 and Figure 3 The conductive terminal 130 is basically located in the first section 111a and the second section 111b of the support 111. The cable 140 is inserted into the second section 111b from the third section 111c of the support 111. The cable 140 and the conductive terminal 130 are connected at the second section 111b of the support 111. The cable 140 is inserted into the conductive terminal 130 to achieve electrical connection.

[0054] like Figure 3 As shown, the third section 111c of the support part 111 of the outer shell 110 is provided with a welding groove 1111 extending along the cable 140. The cable 140 passes through both ends of the welding groove 1111, and the outer conductor layer 143 is welded to the welding groove 1111. Figure 3 As shown, solder 101 is accumulated in the welding tank 1111. Figure 8 The image shows the state of the outer casing 110 before welding. Figure 8 There is no solder 101 accumulated in the welding groove 1111 yet; the welding groove 1111 is a through groove. During welding, the cable 140 is fixed in the welding groove 1111, and then solder 101 is added for welding.

[0055] In the embodiments of this application, such as Figure 8 As shown, the welding groove 1111 is formed by folding the sheets 1112 on both sides of the third section 111c of the support part 111 towards the middle. This not only facilitates the formation of the welding groove 1111, but also ensures that the two ends of the welding groove 1111 are unobstructed, forming a through groove structure, which facilitates the insertion of the cable 140.

[0056] In one embodiment, such as Figure 1 and Figure 3 As shown, the ultra-fine coaxial connector 10 also includes a cover plate 150. The cover plate 150 is positioned within the welding groove 1111 by covering the opening of the welding groove 1111, thereby securing the cable 140 within the welding groove 1111 for easy welding. The cover plate 150 can be fixed by the groove walls on both sides of the welding groove 1111, securing it between the two groove walls. The cover plate 150 can be made of metal, and it is welded to the housing 110 when it is welded to the cable 140.

[0057] In one embodiment, such as Figure 1 and Figure 3 As shown, the cover plate 150 is provided with solder addition holes 151. Solder 101 can be added through these solder addition holes 151 during soldering. Multiple solder addition holes 151 can be provided as needed.

[0058] In this embodiment, the soldering method used is tin soldering. Therefore, the added solder 101 is tin powder. In other optional embodiments, other soldering methods may also be used, and no limitation is made here.

[0059] Combination Figure 2 and Figure 3 As shown, the insulator 120 covers the outside of the conductive terminal 130, insulating the conductive terminal 130 from the housing 110. (Reference) Figure 3 The insulator 120 extends from the first segment 111a of the housing 110 to the second segment 111b of the housing 110. For example... Figure 3 As shown, a pair of clamping arms 1113 are provided on both sides of the second section 111b of the support portion 111 of the outer casing 110. The clamping arms 1113 press against the insulator 120 to fix the insulator 120. It can be understood that there are two clamping arms 1113, which are respectively provided on both sides of the support portion 111. Each clamping arm 1113 presses against the middle of the support portion 111, thereby pressing the insulator 120.

[0060] like Figure 9 As shown, the insulating member 230 includes a main body 121 and a rear cover 122. The back of the main body 121 is open, and a receiving cavity 1211 for accommodating a conductive terminal 130 is provided in the main body 121. The conductive terminal 130 is inserted into the receiving cavity 1211 through the opening on the back of the main body 121. After the conductive terminal 130 is inserted into the main body 121 of the insulating member 230, the rear cover 122 of the insulating member 230 is closed, and then the insulating member 120 containing the conductive terminal 130 is installed into the housing 110.

[0061] like Figure 8 As shown, the retaining arm 1113 on the housing 110 is initially open. After the insulator 120 is installed on the housing 110, the retaining arm 1113 on the housing 110 is bent and pressed to fix the insulator 120. At the same time, the retaining arm 1113 can also be used to lock the cover plate 150 of the insulator 120 to prevent the cover plate 150 from opening.

[0062] like Figure 3 As shown, the cylindrical portion 112 of the outer casing 110 is provided with a notch 1121 through which the insulator 120 passes. The insulator 120 can pass through the notch 1121 from the first section 111a of the support portion 111 of the outer casing 110 to the second section 111b.

[0063] Figure 12 The structure of the mating connector 20 used in conjunction with the ultra-fine coaxial connector 10 of this application is shown. (See diagram below.) Figure 12 As shown, the mating connector 20 includes a cylindrical housing 210, a center conductor 220, and an insulator 230. The cylindrical housing 210 and the center conductor 220 are insulated from each other by the insulator 230. The cylindrical housing 210 is used to insert into the cylindrical portion 112 of the housing 110 of the ultra-fine coaxial connector 10, and the center conductor 220 is used to contact the contact portion 132 of the conductive terminal 130 of the ultra-fine coaxial connector 10. The center conductor 220 is generally cylindrical and is coaxially arranged with the cylindrical housing 210.

[0064] In this embodiment, cable 140 is a coaxial cable.

[0065] In the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0066] In the description of this embodiment, terms such as "front," "rear," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0067] The embodiments described above merely illustrate the implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An ultra-fine coaxial connector, characterized in that, The device includes a housing, an insulator disposed within the housing, a conductive terminal disposed within the insulator, and a cable electrically connected to the conductive terminal; the conductive terminal includes a base and a contact portion disposed at one end of the base; the housing includes a support portion extending along the conductive terminal and the cable and capable of supporting the conductive terminal and the cable, and a cylindrical portion extending from the support portion in the insertion direction and surrounding the contact portion; The cable includes a core layer and an outer conductor layer disposed outside the core layer. The core layer is connected to the conductive terminal, and the outer conductor layer is welded to the support portion.

2. The ultra-fine coaxial connector according to claim 1, characterized in that, The support portion includes a first section, a second section, and a third section arranged sequentially along the conductive terminal and the cable. The cylindrical portion is disposed in the first section, and the third section is welded to the outer conductor layer.

3. The ultra-fine coaxial connector according to claim 2, characterized in that, The third section is provided with a welding groove extending along the cable, the cable passes through both ends of the welding groove, and the outer conductor layer is welded to the welding groove.

4. The ultra-fine coaxial connector according to claim 3, characterized in that, Also includes: A cover plate, which is placed in the welding groove by covering the groove opening of the welding groove, so as to fix the cable in the welding groove.

5. The ultra-fine coaxial connector according to claim 4, characterized in that, The cover plate is provided with solder addition holes.

6. The ultra-fine coaxial connector according to any one of claims 1-5, characterized in that, The welding method is tin soldering.

7. The ultra-fine coaxial connector according to claim 1, characterized in that, The contact portion includes a cantilever spaced apart from the base in the insertion direction, and a support section for supporting the cantilever on the base.

8. The ultra-fine coaxial connector according to claim 7, characterized in that, The support section extends from the base along the insertion direction, and the cantilever extends from the support section in a direction parallel to the base.

9. The ultra-fine coaxial connector according to claim 8, characterized in that, The support section and the cantilever are located at one end of the base, and the cantilever extends to the other end of the base in a direction parallel to the base.

10. The ultra-fine coaxial connector according to claim 9, characterized in that, The cantilever has an inclined bent section at its root.

11. The ultra-fine coaxial connector according to claim 2, characterized in that, The insulator covers the conductive terminal and extends from the first section of the support to the second section of the support. The second section has clamping arms on both sides, which press against the insulator to fix the insulator.

Images