RCA seat with improved structure

Abstract

The utility model provides an RCA seat with an improved structure, which comprises one or more tubular conductive shaft sleeves, the top end of each conductive shaft sleeve is provided with a necking part, the bottom end of each conductive shaft sleeve is riveted and fixed on a grounding shell, the grounding shell is provided with a first conductive terminal, an insulating inner tube is concentrically sleeved in each conductive shaft sleeve, the bottom end of each insulating inner tube is integrally formed on an insulating seat, and the insulating seat is provided with a second conductive terminal. A central hole of each insulating inner tube axially penetrates through the insulating seat, an axial insertion groove is formed in the inner wall of each insulating inner tube upwards from the bottom end, a conductive elastic piece extending in the axial direction is installed in each insertion groove in an inserted mode, and each conductive elastic piece is provided with a contact part protruding out of the inner wall of the corresponding insulating inner tube in the radial direction. A second conductive terminal which is embedded on the insulating seat and extends outwards is integrally formed at the bottom end of each conductive elastic sheet; and a cover plate for limiting the second conductive terminal from loosening downwards is also fixed on the bottom surface of the insulating seat. The internal structures of the conductive shaft sleeve of the RCA seat are not loosened, the assembly is simple, the production cost is reduced, and the product stability is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of potentiometers, in particular to an RCA socket with an improved structure. Background Art

[0002] An RCA socket is an interface device that is plugged with an RCA terminal to transmit audio and video signals. There is a common RCA socket, whose basic structure includes one or more cylindrical conductive sleeves for transmitting ground signals, the top of which is formed with an outer chamfer for convenient plugging with the RCA terminal, thereby forming a constricted portion, the bottom end of each conductive sleeve is riveted and fixed to a ground shell, a first conductive terminal is formed on the ground shell, an insulating inner tube is concentrically and adaptively sleeved in each conductive sleeve, and a conductive inner tube for transmitting electrical signals is also sleeved in the insulating inner tube, a second conductive terminal is riveted and fixed at the bottom end of each conductive inner tube, and an insulating seat fixed to the ground shell for isolating and mounting the second conductive terminal is also included. The production and assembly method is to rivet the conductive sleeve to the grounding shell, fix the insulating seat to the grounding shell, and then insert the insulating inner tube into the conductive sleeve from the top, and then insert the conductive inner tube into the insulating inner tube from the bottom, and embed the second conductive terminal into the insulating seat, and finally rivet the top of the conductive sleeve to form a shrinking portion, and rivet the second conductive terminal to the bottom of the conductive inner tube. There are several problems with this RCA seat: 1. Due to structural limitations, the top of the conductive sleeve is riveted to form a chamfer, and the conductive inner tube and the second conductive terminal are riveted to the bottom of the conductive inner tube. The riveting force is slightly larger, which is easy to damage the assembly structure, and the riveting force is slightly smaller. The insulating inner tube and the conductive inner tube will become loose, which cannot meet the high quality requirements. 2. There are many parts, resulting in low production efficiency and reduced structural and signal transmission stability. 3. For RCA seats with higher quality requirements, the conductive inner tube needs to ensure long-term plug-in elasticity. The existing practice is to mold it through zinc alloy, and then shrink and electroplate it in the later stage, which makes the process complicated and the cost high. Therefore, it is necessary to improve the product structure of this type of RCA socket to enhance the market value of the product. Utility Model Content

[0003] The purpose of the utility model is to improve the structure of the existing RCA socket to reduce product cost, improve product quality and better meet market demand.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An RCA seat with an improved structure includes one or more circular tubular conductive sleeves, the top of the conductive sleeves having a constricted portion, the bottom end of each conductive sleeve being riveted and fixed to a grounding shell, the grounding shell being formed with a first conductive terminal, each conductive sleeve being concentrically and adaptively sleeved with an insulating inner tube, the bottom end of each insulating inner tube being integrally formed on an insulating seat, and the center hole of each insulating inner tube axially passes through the insulating seat, the inner wall of each insulating inner tube being provided with an axial insertion groove from the bottom end upward, and an axially extending conductive spring piece being inserted and installed in the insertion groove, the conductive spring piece having a contact portion radially protruding from the inner wall of the insulating inner tube, the bottom end of each conductive spring piece being integrally formed with a second conductive terminal embedded in the insulating seat and extending outward, and the bottom surface of the insulating seat is also fixed with a cover plate for limiting the downward loosening of the second conductive terminal.

[0006] The beneficial effect of the above scheme is that the necking portion of the conductive sleeve can be pre-molded. During assembly, the conductive sleeve and the grounding shell are first riveted and fixed, and then the insulating inner tube and the insulating seat of the integrated structure are installed from the bottom of the conductive sleeve, and then the conductive spring sheet and the second conductive terminal of the integrated structure are inserted and assembled as a whole from the bottom of the insulating seat, and then the cover plate is assembled on the bottom surface of the insulating seat, and finally the grounding shell and the insulating seat are fixed. Compared with the existing RCA seat structure, there is no need to rivet and press the necking portion in the later stage of assembly, and to rivet the conductive spring sheet and the second conductive terminal, so there will be no looseness between the internal structures of the conductive sleeve. In addition, the RCA seat parts of this scheme are more integrated and the assembly is greatly simplified, which can not only reduce the production cost of the product, but also enhance the stability of the product structure and signal transmission.

[0007] In a preferred embodiment, the conductive spring sheet is a planar sheet extending along the axis of the insulating inner tube, and a U-shaped groove with a top opening and extending downward along the axis of the insulating inner tube is formed on the conductive spring sheet, so that two conductive sheets embedded in the insertion groove are formed on both sides of the conductive spring sheet, and there is a gap between the outer edge of the conductive sheet and the insertion groove for the conductive sheet to deform radially along the insulating inner tube, and the contact portion is an arc-shaped protrusion formed on the inner edge of the conductive sheet.

[0008] The beneficial effect of this preferred solution is that the conductive spring sheet structure can be directly stamped and formed by a metal sheet. Compared with the molding method of the conductive inner tube structure in the prior art, the molding process is greatly simplified and the cost is significantly reduced. Moreover, the two conductive sheets of the conductive spring sheet are subjected to plugging and unplugging deformation along their width direction, and the conductive sheets have a sufficient width, so the conductive sheets are not prone to metal fatigue, and the RCA socket can still maintain good electrical contact during long-term plugging and unplugging.

[0009] In a preferred embodiment, the bottom end of the conductive spring is also bent horizontally to form a limit plate for limiting its upward loosening.

[0010] The beneficial effect of this preferred solution is that the top surface of the limit plate abuts against the bottom end surface of the insulating inner tube, and the bottom surface of the limit plate is limited by the cover plate, which can limit the axial loosening of the conductive spring along the insulating inner tube and ensure the stability of the conductive spring structure during the plugging and unplugging process.

[0011] In a preferred embodiment, the insulating seat is in a rectangular block shape, the second conductive terminal is arranged horizontally and extends from the side end of the insulating seat, and the first conductive terminal is also formed on the side end of the grounding shell; and the cover plate covers the bottom surface of the insulating seat as a whole.

[0012] The beneficial effects of this preferred solution are: the second conductive terminal is arranged horizontally and is perpendicular to the conductive spring sheet, which can further enhance the stability of the conductive spring sheet through the insulating seat; and the cover plate covers the entire bottom surface of the insulating seat. Compared with the method of providing a separate cover plate for each group of insulating inner tubes, the structure has stronger integrity and is simpler to assemble.

[0013] In a preferred embodiment, the grounding shell includes a top plate riveted to fix the conductive sleeve and affixed to the top surface of the insulating seat, a side plate bent downward from the side edge of the top plate to affix to the insulating seat and at least two opposite side walls of the cover plate, and a bending portion formed by bending the bottom edges of the two side plates toward each other to affix to the bottom surface of the cover plate.

[0014] The beneficial effect of this preferred solution is that the insulating seat and the cover plate can be surrounded and fixed as a whole by the top plate, side plate and bending part of the grounding shell. Compared with the method of fixing each part separately, the structure and production assembly are simpler, and at the same time, the structural reliability is higher and the signal anti-interference ability is stronger.

[0015] In a preferred embodiment, the bottom surface of the insulating seat has an inner recessed groove corresponding to the position of the insulating inner tube, and an embedding groove for embedding the second conductive terminal, and the top surface of the cover plate has a protrusion adapted to the inner recessed groove.

[0016] The beneficial effect of this preferred solution is that the inner recessed groove and the embedded groove can facilitate the installation of the conductive spring sheet and the second conductive spring sheet, and also facilitate the plug-in cooperation with the protrusion of the cover plate, which not only prevents the horizontal loosening of the cover plate, but also facilitates the movement for subsequent assembly production after the cover plate and the insulating seat are plugged and fixed.

[0017] In a preferred embodiment, the top end of the insulating inner tube has a split structure and a colored identification segment, and the top end of the identification segment is axially limited by the necked portion.

[0018] The beneficial effect of this preferred solution is that since the identification segment is used to distinguish different signals and has different colors, after adopting the split structure, it is only necessary to configure a different identification segment on the upper end of each insulating inner tube, and there is no need to injection mold the insulating inner tubes into different colors respectively. Especially when there are multiple different colors, it becomes simple and feasible to integrate the insulating inner tube and the insulating seat.

[0019] In a preferred embodiment, the inner wall of the necked portion forms an annular limiting step, and the marking section has an outer step matched with the limiting step.

[0020] The beneficial effect of this preferred solution is that compared with the existing arc-shaped limiting surface formed by chamfering, the limiting step can better limit the insulating inner tube and the identification section axially upward, thereby enhancing the structural reliability and stability.

[0021] In a preferred embodiment, the outer wall of the lower section of the conductive sleeve is provided with an external thread, and the thread is matched with a nut assembly for assembly.

[0022] The beneficial effect of this preferred solution is that the conductive sleeve is inserted into the mounting hole of the product, and the RCA socket is locked by the nut assembly, thereby ensuring the reliability of the installation of the RCA socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 It is a schematic diagram of the exploded structure of the RCA socket in the embodiment;

[0025] Figure 2 The overall structure diagram of the RCA socket in the embodiment;

[0026] Figure 3 It is a schematic diagram of the vertical cross-sectional structure of the RCA seat in the embodiment;

[0027] Figure 4 is a schematic structural diagram of a conductive spring and a second conductive terminal in an embodiment;

[0028] Figure 5 It is a schematic diagram of the structure of the insulating seat and the insulating inner tube in the embodiment;

[0029] Figure 6 FIG. 4 is a schematic diagram of the structure of the grounding shell in the embodiment. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings:

[0031] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated in the terms is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. In addition, unless otherwise clearly specified and limited, terms such as "install", "connect", "connect", and "fix" should be understood in a broad sense, and those of ordinary skill in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0032] refer to Figures 1 to 6 As shown, this embodiment is described by taking a dual-socket RCA socket as an example. The RCA socket includes two cylindrical conductive sleeves 1, the top of the conductive sleeves 1 has a constricted portion 11, the bottom ends of the two conductive sleeves 1 are riveted and fixed to a grounding shell 2, and the grounding shell 2 is formed with a first conductive terminal 21. The two conductive sleeves 1 are concentrically and adaptively sleeved with an insulating inner tube 3, the bottom ends of the two insulating inner tubes 3 are integrally formed on the same insulating seat 4, and the center hole of each insulating inner tube 3 31 axially penetrates the insulating seat 4, and an axial insertion groove 32 is provided on the inner wall of each of the insulating inner tubes 3 from the bottom end upward, and a conductive spring 5 extending along the axial direction is inserted and installed in the insertion groove 32, and the conductive spring 5 has a contact portion 51 radially protruding from the inner wall of the insulating inner tube 3, and the bottom end of each of the conductive springs 5 ​​is integrally formed with a second conductive terminal 6 embedded in the insulating seat 4 and extending outward, and the bottom surface of the insulating seat 4 is also fixed with a cover plate 7 for limiting the downward loosening of the second conductive terminal 6.

[0033] The necking portion 11 of the conductive sleeve 1 is formed by molding. During assembly, the two conductive sleeves 1 are first riveted and fixed on a grounding shell 2, and then the insulating inner tube 3 and the insulating seat 4 of the integrated structure are installed from the bottom of the conductive sleeve 1, and then the two sets of conductive springs 5 ​​and the second conductive terminals 6 of the integrated structure are respectively inserted from the bottom of the insulating seat 4, so that the conductive springs 5 ​​are installed in the insertion groove 32, and then the cover plate 7 is assembled on the bottom surface of the insulating seat 4, and finally the grounding shell 2 and the insulating seat 4 are fixed. Compared with the existing RCA seat structure, there is no need to rivet and press the necking portion 11 in the later stage of assembly, and to rivet the conductive springs 5 ​​and the second conductive terminals 6, so there will be no looseness between the internal structures of the conductive sleeve 1. In addition, the RCA seat parts of this solution are more integrated and the assembly is greatly simplified, which can not only reduce the production cost of the product, but also enhance the stability of the product structure and signal transmission.

[0034] A preferred solution is that the conductive spring sheet 5 of this embodiment is a flat sheet extending along the axis of the insulating inner tube 3, and a U-shaped groove 500 with a top opening and extending downward along the axis of the insulating inner tube 3 is formed on the conductive spring sheet 5, so that two conductive sheets 52 embedded in the insertion groove 32 are formed on both sides of the conductive spring sheet 5, and there is a gap 53 between the outer edge of the conductive sheet 52 and the insertion groove 32 for the conductive sheet 52 to deform radially along the insulating inner tube 3, and the contact portion 51 is an arc-shaped protrusion formed on the inner edge of the conductive sheet 52. The conductive spring sheet 5 structure can be directly stamped by metal sheets. Compared with the molding method of the conductive inner tube structure in the prior art, the molding process is greatly simplified and the cost is significantly reduced. Moreover, the two conductive sheets 52 of the conductive spring sheet 5 are subjected to plug-in deformation along the width direction thereof, and the conductive sheet 52 has a sufficient width, so the conductive sheet 52 is not easy to produce metal fatigue, and the RCA socket can still maintain good electrical contact during long-term plug-in and pull-out. In other embodiments, the conductive spring sheet 5 may also be other existing structures, such as a tubular claw structure formed by stamping and bending a metal sheet, or a spring sheet structure formed by bending a metal sheet, or a pot-shaped bump structure punched out on a metal sheet.

[0035] In a preferred embodiment, the bottom end of the conductive spring sheet 5 of this embodiment is also bent horizontally to form a limit plate 53 to limit its upward loosening. The top surface of the limit plate 53 abuts against the bottom end surface of the insulating inner tube 3, and the bottom surface of the limit plate 53 is limited by the cover plate 7, which can limit the axial loosening of the conductive spring sheet 5 along the insulating inner tube 3, ensuring the stability of the conductive spring sheet 5 structure during the plugging and unplugging process. In other embodiments, the axial limit of the conductive spring sheet 5 can also be achieved through other structures, such as the bottom end width of the conductive spring sheet 5 is wider, forming a step-like limit, or directly limiting through the second conductive terminal 6, etc.

[0036] A preferred solution is that the insulating seat 4 of this embodiment is in the shape of a rectangular block, the second conductive terminal 6 is arranged horizontally and extends from the side end of the insulating seat 4, and the first conductive terminal 21 is also formed on the side end of the grounding shell 2; and the cover plate 7 covers the bottom surface of the insulating seat 4 as a whole. The second conductive terminal 6 is arranged horizontally and is perpendicular to the conductive spring 5, which can further enhance the stability of the conductive spring 5 through the insulating seat 4; and the cover plate 7 covers the bottom surface of the insulating seat 4 as a whole. Compared with the method of providing a separate cover plate 7 for each group of insulating inner tubes 3, the structure has stronger integrity and is easier to assemble. In other embodiments, the first conductive terminal 21 and the second conductive terminal 6 can also extend vertically from the bottom end of the insulating seat 4 according to installation requirements. The cover plate 7 can be designed to be two pieces corresponding to the bottom end positions of the insulating inner tubes 3 respectively.

[0037] A preferred solution, the grounding shell 2 of this embodiment includes a top plate 201 that is riveted to fix the conductive sleeve 1 and fits on the top surface of the insulating seat 4, a side plate 202 that is bent downward from the side of the top plate 201 to fit on at least two opposite side walls of the insulating seat 4 and the cover plate 7, and a bending portion 203 formed by bending the bottom edges of the two side plates 202 toward each other to fit on the bottom surface of the cover plate 7. The insulating seat 4 and the cover plate 7 can be surrounded and fixed as a whole by the top plate 201, the side plate 202 and the bending portion 203 of the grounding shell 2. Compared with the method of fixing each part separately, the structure and production assembly are simpler, and the reliability of the structure is higher, and the signal anti-interference ability is stronger. In other embodiments, the grounding shell 2 and the insulating seat 4 and the cover plate 7 can also be fixed to each other by riveting with a vertically penetrated shaft, or by screw locking, and / or by gluing, ultrasonic and other methods.

[0038] A preferred solution is that the bottom surface of the insulating seat 4 of this embodiment has an inner recessed groove 41 corresponding to the position of the insulating inner tube 3, and an embedding groove 42 for embedding the second conductive terminal 6, and the top surface of the cover plate 7 has a protrusion 71 adapted to the inner recessed groove 41. The inner recessed groove 41 and the embedding groove 42 can facilitate the installation of the conductive spring 5 and the second conductive spring 5, and also facilitate the plug-in fit with the protrusion 71 of the cover plate 7, which can not only prevent the horizontal loosening of the cover plate 7, but also facilitate the subsequent assembly production after the cover plate 7 and the insulating seat 4 are plugged and fixed. In other embodiments, the bottom surface of the insulating seat 4 and the top surface of the cover plate 7 can also be designed to be flat and fitted, or can be designed to be other mutually adapted structures according to actual needs, such as forming a connected long inner groove on the bottom surface of the insulating base, and the cover plate 7 is embedded and installed in the inner groove, and so on.

[0039] A preferred solution is that the top end of the insulating inner tube 3 of this embodiment has a split structure and a colored identification segment 33, and the top end of the identification segment 33 is axially limited by the neck portion 11. Since the identification segment 33 is used to distinguish different signals, the colors will be different. After adopting the split structure, it is only necessary to configure different identification segments 33 at the upper end of each insulating inner tube 3, and there is no need to inject the insulating inner tubes 3 into different colors respectively. Especially when there are multiple different colors, it becomes simple and feasible to form the insulating inner tube 3 and the insulating seat 4 as one piece. In other embodiments, the identification segment 33 can also be formed as one piece with the insulating inner tube 3, such as by two-color injection molding, or the surface is colored after injection molding.

[0040] In a preferred embodiment, the inner wall of the necking portion 11 of the embodiment forms an annular limiting step 111, and the identification section 33 has an outer step 331 adapted to the limiting step 111. The limiting step 111 is usually formed by molding, and the limiting step 111 can better limit the axial upward position of the insulating inner tube 3 and the identification section 33, thereby enhancing the structural reliability and stability. In other embodiments, the necking portion 11 can also be formed by the existing peripheral chamfering method, and the cross section of the necking portion 11 is in a concave arc shape.

[0041] A preferred solution is that the outer wall of the lower section of the conductive sleeve 1 of this embodiment is provided with an external thread 12, and the thread is matched with a nut assembly 13 for assembly. The conductive sleeve 1 is inserted into the mounting hole of the product, and the RCA seat is locked by the nut assembly 13, thereby ensuring the reliability of the installation of the RCA seat. In other embodiments, the conductive sleeve 1 can also be inserted into the mounting hole of the product, and then the mounting surface of the product is fixed to the grounding shell 2 or the insulating seat 4 by locking screws, gluing, etc.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An improved RCA socket, comprising one or more cylindrical conductive sleeves, the top of the conductive sleeves having a constricted portion, the bottom of each conductive sleeve being riveted and fixed to a grounding shell, the grounding shell having a first conductive terminal formed thereon, and each conductive sleeve having an insulating inner tube concentrically and fittingly sleeved therein, characterized in that: The bottom end of each of the insulating inner tubes is integrally formed on an insulating seat, and the center hole of each of the insulating inner tubes axially passes through the insulating seat. An axial insertion groove is provided on the inner wall of each of the insulating inner tubes from the bottom end upward, and an axially extending conductive spring is inserted and installed in the insertion groove. The conductive spring has a contact portion radially protruding from the inner wall of the insulating inner tube. The bottom end of each of the conductive springs is integrally formed with a second conductive terminal embedded in the insulating seat and extending outward, and a cover plate for limiting the downward loosening of the second conductive terminal is also fixed to the bottom surface of the insulating seat.

2. The RCA socket with improved structure according to claim 1, characterized in that: The conductive spring sheet is a flat sheet extending along the axis of the insulating inner tube, and a U-shaped groove with a top opening and extending downward along the axis of the insulating inner tube is formed on the conductive spring sheet, so that two conductive sheets embedded in the insertion groove are formed on both sides of the conductive spring sheet, and there is a gap between the outer edge of the conductive sheet and the insertion groove for the conductive sheet to deform radially along the insulating inner tube, and the contact portion is an arc-shaped protrusion formed on the inner edge of the conductive sheet.

3. The RCA socket with improved structure according to claim 2, characterized in that: The bottom end of the conductive spring is also bent horizontally to form a limiting plate for limiting its upward loosening.

4. The RCA socket with improved structure according to claim 1, characterized in that: The insulating seat is in a rectangular block shape, the second conductive terminal is arranged horizontally and extends from the side end of the insulating seat, and the first conductive terminal is also formed on the side end of the grounding shell; and the cover plate covers the bottom surface of the insulating seat as a whole.

5. The RCA socket with improved structure according to claim 4, characterized in that: The grounding shell includes a top plate that is riveted to fix the conductive sleeve and fits on the top surface of the insulating seat, a side plate that is bent downward from the side edge of the top plate to fit on at least two opposite side walls of the insulating seat and the cover plate, and a bending portion formed by bending the bottom edges of the two side plates toward each other to fit on the bottom surface of the cover plate.

6. The RCA socket with improved structure according to claim 4, characterized in that: The bottom surface of the insulating seat has an inner recessed groove corresponding to the position of the insulating inner tube and an embedding groove for embedding the second conductive terminal, and the top surface of the cover plate has a protrusion adapted to the inner recessed groove.

7. The RCA socket with improved structure according to claim 1, characterized in that: The top end of the insulating inner tube has a split structure and a colored identification segment, and the top end of the identification segment is axially limited by the necking portion.

8. The RCA socket with improved structure according to claim 7, characterized in that: The inner wall of the necked portion forms an annular limiting step, and the marking section has an outer step matched with the limiting step.

9. The RCA socket with improved structure according to claim 1, characterized in that: The outer wall of the lower section of the conductive sleeve is provided with an external thread, and the thread is matched with a nut assembly for assembly.

Images