Coaxial waterproof connector

Abstract

An insulator is installed in a shielding piece, an inner conductor is installed in the insulator, a platform is arranged on the insulator, sealing rings protruding outwards in the radial direction are arranged on the portions, located on the two axial sides of the platform, of the insulator, and the sealing rings are extruded on the inner side wall of the shielding piece. An injection molding gap is formed among the shielding piece, the insulator and the two sealing rings, a positioning window is formed in the shielding piece, the platform is aligned with the positioning window, a sheath is installed outside the shielding piece in an injection molding mode, injection molding slurry of the sheath flows into the injection molding gap through the positioning window, and a positioning sleeve is formed in the injection molding gap. And positioning teeth are formed in the positioning windows, and a tooth sleeve is further mounted on the sheath. The beneficial effects of the invention are that the insulator, the shielding member and the sheath form a whole body, so that contact movement caused by assembly gaps can be avoided, the contact reliability is improved, the structures of the insulator and the shielding member are simpler and are convenient to manufacture, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to waterproof connectors, and more particularly to a coaxial waterproof connector. Background Technology

[0002] Currently, waterproof connectors are equipped with waterproof caps at the tail. However, the center hole of the waterproof cap is an integral piece. If the waterproof cap is missing, the missing waterproof connector must be destroyed and reassembled to install the waterproof cap on the base. Moreover, the shielding of waterproof connectors is mainly formed by one-piece stamping. However, in order to prevent the shielding from axial movement, an axial positioning structure needs to be set on the shielding. Therefore, the manufacturing process of the shielding is relatively complicated. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a coaxial waterproof connector.

[0004] The objective of this invention is achieved through the following technical solution: a coaxial waterproof connector, comprising a female connector and a male connector, wherein the female connector and the male connector are mated together. The female connector includes a female base, and a shielding component is installed inside the mounting cavity of the female base; The male connector includes a male base, and a shielding component is also installed inside the cavity of the male base; The shielding assembly includes a shielding element, an insulator installed inside the shielding element, an inner conductor installed inside the insulator, a platform on the insulator, and radially protruding sealing rings on the insulators located on both sides of the platform's axial direction. The sealing rings are pressed against the inner wall of the shielding element, forming an injection gap between the shielding element, the insulator, and the two sealing rings. A positioning window is provided on the shielding element, and the platform is aligned with the positioning window. A sheath is installed on the outside of the shielding element by injection molding, and the injection slurry of the sheath flows into the injection gap through the positioning window, forming a positioning sleeve within the injection gap and positioning teeth within the positioning window. A toothed sleeve is also installed on the sheath. The toothed sleeve on the female connector is pressed into the mounting cavity of the female base, and the toothed sleeve on the male connector is pressed into the cavity of the male base. When the female connector and the male connector are plugged in, the inner conductors of the female connector and the male connector are connected, and cables are connected to both the inner conductors of the female connector and the male connector. Sealing bodies are installed in the tail cavity of the female base and the tail cavity of the male base, and the cables pass through the corresponding sealing bodies.

[0005] Optionally, both the tail end of the female base and the tail end of the male base are equipped with waterproof caps.

[0006] Optionally, the waterproof cover has a through groove and several circumferentially spaced slots.

[0007] Optionally, both the female and male bases are equipped with locking blocks at their tails, and the waterproof cover has a locking hole in which the locking block is engaged.

[0008] Optionally, the inner wall of the shielding component is provided with an annular groove that matches the sealing ring.

[0009] Optionally, the gear sleeve is provided with a radially convex ring.

[0010] Optionally, the female base has a mating plug at the mating end, and a sealing sleeve is provided on the mating plug, which is pressed into the mating cavity of the male base.

[0011] Optionally, the female base is provided with a locking tongue, and the male base is provided with a latch that engages with the locking tongue.

[0012] The present invention has the following advantages: 1. The shielding assembly of the coaxial waterproof connector of the present invention has its insulator and shield fixed by a sheath, and the sheath can be injection molded, thereby making the insulator, shield and sheath form a whole. Therefore, it can avoid contact movement caused by assembly gap, improve contact reliability, and the structure of the insulator and shield is simpler, easier to manufacture and reduce production cost. 2. Both ends of the female and male connectors are equipped with waterproof caps. The waterproof caps have through slots, and the cable can be inserted into the center hole of the waterproof cap through the through slots. This allows the connector to be repaired if the waterproof cap is missing, thereby reducing production costs. 3. The mating areas of the female and male connectors are sealed by a sealing sleeve, and the tails of the female and male connectors are also sealed by a sealing body, thus ensuring the waterproof performance of the connectors. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the female connector structure; Figure 3 This is a schematic diagram of the shielding assembly on the female connector. Figure 4 This is a cross-sectional view of the shielding assembly on the female connector. Figure 5 This is a schematic diagram of the shielding component on the female connector. Figure 6 This is a schematic diagram of the toothed sleeve on the female connector. Figure 7 This is a schematic diagram of the sheath on the female connector. Figure 8 This is a schematic diagram of the structure of the mother-end base; Figure 9 This is a schematic diagram of the structure of the insulator on the female connector. Figure 10 This is a structural diagram of the waterproof cover; Figure 11 for Figure 4 Enlarged view of point A in the middle; In the diagram, 1-shielding component, 2-sheath, 3-toothed sleeve, 4-insulator, 5-inner conductor, 6-anti-reverse spring, 7-anti-reverse notch, 31-convex ring, 32-inner spring, 33-outer spring, 34-helical tooth, 35-first bend, 36-second bend, 11-inner spring, 12-positioning window, 13-reduction notch, 14-observation port, 21-abutting end face, 22-crimping ring, 23-annular groove, 24-abutting ring 41-Installation cavity, 42-Plug, 43-Limiting step, 44-Platform, 45-Lock tongue, 46-Lock, 47-Sealing ring, 48-Positioning tooth, 49-Positioning sleeve, 10-Shielding assembly, 20-Female base, 30-Sealing sleeve, 40-Sealing body, 50-Cable, 60-Waterproof cover, 70-Male base, 61-Through groove, 62-Split groove, 100-Female connector, 200-Male connector. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] like Figure 1 As shown, a coaxial waterproof connector includes a female connector 100 and a male connector 200, which are mated together. The female connector 100 includes a female base 20, and a shielding component 10 is installed within a mounting cavity 41 of the female base 20. The male connector 200 includes a male base 70, and a shielding component 10 is also installed within a cavity of the male base 70. In this embodiment, as... Figure 3 As shown, the shielding assembly 10 includes a shielding member 1, an insulator 4 installed inside the shielding member 1, and an inner conductor 5 installed inside the insulator 4, as shown. Figure 9 As shown, the insulator 4 has a platform 44, as... Figure 4 and Figure 11As shown, radially protruding sealing rings 47 are provided on the insulators 4 located on both sides of the platform 44. The sealing rings 47 are pressed against the inner wall of the shield 1, and an injection gap is formed between the shield 1, the insulators 4, and the two sealing rings 47. The shield 1 has a positioning window 12, and the platform 44 is aligned with the positioning window 12. A sheath 2 is installed on the outside of the shield 1 by injection molding, and the injection slurry of the sheath 2 flows into the injection gap through the positioning window 12, forming a positioning sleeve 49 in the injection gap and a positioning tooth 48 in the positioning window 12. During the injection molding process, the injection slurry enters the platform 44 through the positioning window 12. The insulator 4 has a circular structure, and after the platform 44 is opened on its surface, the axial sides of the platform 44 will... A step is formed. After the sheath 2 is injection molded, the insulator 4, sheath 2, and shield 1 are axially and circumferentially positioned by the positioning teeth 48. In this embodiment, the insulator 4 located on both sides of the platform 44 is provided with radially protruding sealing rings 47. The sealing rings 47 are pressed against the inner wall of the shield 1, and an injection gap is formed between the shield 1, the insulator 4, and the two sealing rings 47. During injection molding, the injection slurry enters into the injection gap, and the injection plastic in the injection gap forms a positioning sleeve 49. Therefore, no other axial positioning structure is required between the insulator 4 and the shield 1, nor between the shield 1 and the sheath 2, which makes the structure of the insulator 4 and the shield 1 simple and easy to manufacture.

[0021] In this embodiment, as Figure 1 As shown, a toothed sleeve 3 is also installed on the sheath 2. The toothed sleeve 3 on the female connector 100 is pressed into the mounting cavity 41 of the female base 20, and the toothed sleeve 3 on the male connector is pressed into the cavity of the male base 70. The toothed sleeve 3 is pressed by the base, so a large frictional force is formed between the toothed sleeve 3 and the corresponding base. Under the action of this frictional force, the relative movement between the shielding component 10 and the base can be hindered. During insertion and removal, this frictional force needs to be overcome before the shielding component 10 and the base can move relative to each other. During the insertion and removal process, the insertion and removal force of the connector is much smaller than this frictional force. Therefore, by pressing the toothed sleeve 3 by the base, the axial position of the shielding component 10 and the corresponding base can be fixed.

[0022] In this embodiment, as Figure 1 As shown, when the female connector 100 and the male connector 200 are plugged in, the inner conductor 5 of the female connector and the inner conductor 5 of the male connector are connected, and cables 50 are connected to both the inner conductor 5 of the female connector and the inner conductor 5 of the male connector. Sealing bodies 40 are installed in the tail cavity of the female base 20 and the tail cavity of the male base 70, and the cables 50 pass through the corresponding sealing bodies 40. Therefore, the tails of the female base 20 and the male base 70 are sealed by the sealing bodies 40, thereby ensuring the sealing performance of the connector.

[0023] In this embodiment, as Figure 1 As shown, both the tail of the female end base 20 and the tail of the male end base 70 are equipped with waterproof covers 60. Furthermore, as... Figure 10 As shown, a through groove 61 is provided on the waterproof cover 60, and several circumferentially spaced split grooves 62 are also provided on the waterproof cover 60. Furthermore, the split grooves 62 are U-shaped grooves. When installing the waterproof cover 60, the cable 50 can be inserted into the central hole of the waterproof cover 60 through the through groove 61. During the insertion process, the split grooves 62 can be adapted to ensure that the cable 50 can be inserted into the waterproof cover 60. Then, the waterproof cover 60 is moved axially to install it on the rear end of the corresponding base. Furthermore, a locking block is provided on the outer wall of the rear end of the base, and a locking hole is provided on the waterproof cover 60. When the locking block is inserted into the locking hole, the installation of the waterproof cover 60 and the corresponding base is realized.

[0024] In this embodiment, as Figure 11 As shown, an annular groove matching the sealing ring 47 is provided on the inner wall of the shield 1. After the insulator 4 and the shield 1 are initially installed, the sealing ring 47 enters the annular groove, and a sealing structure is formed between the sealing ring 47 and the annular groove, thereby preventing leakage of the injection molding slurry and ensuring the reliability of the injection molding of the sheath 2.

[0025] In this embodiment, as Figure 1 As shown, the toothed sleeve 3 is provided with a radially outward protruding convex ring 31. After the convex ring 31 is squeezed, the convex ring 31 and the inner wall of the cavity are in line-surface contact. Its contact area is small, which makes the friction between the convex ring 31 and the cavity larger, thereby further improving the friction between the toothed sleeve 3 and the corresponding base, thus ensuring the reliability of the installation of the shielding assembly 10.

[0026] In this embodiment, as Figure 1 and Figure 2 As shown, the female base 20 has a mating plug 42 at its mating end, and a sealing sleeve 30 is provided on the mating plug 42. The sealing sleeve 30 is pressed into the mating cavity of the male base 70. The mating area of ​​the female base 20 and the male base 70 is sealed by the sealing sleeve 30. The two ends of the connector are also sealed by the sealing wire body 40, thereby ensuring the sealing performance of the connector. Furthermore, the sealing sleeve 30 is installed on the mating plug 42 using an overmolding process. An annular protrusion can be provided on the mating plug 42 to ensure the reliability of the installation of the sealing sleeve 30 and the mating plug 42.

[0027] In this embodiment, as Figure 1As shown, the female base 20 is provided with a locking tongue 45, and the male base 70 is provided with a latch 46 that engages with the locking tongue 45. When the male base 70 and the female base 20 are inserted, the latch 46 is locked inside the locking tongue 45, thereby ensuring the reliability of the insertion of the male base 70 and the female base 20.

[0028] The ease of manufacturing and assembly of this connector will be further illustrated below with reference to the shielding component 10 on the female base 20. Figure 2 As shown, the shielding assembly 10 on the female end base 20 includes a shielding element 1, an insulator 4 installed inside the shielding element 1, an inner conductor 5 installed inside the insulator 4, and a sheath 2 installed outside the shielding element 1. A toothed sleeve 3 is installed on the sheath 2, and the axial positions of the insulator 4 and the shielding element 1 are fixed by the sheath 2. Further, as... Figure 9 As shown, the insulator 4 has a platform 44, as... Figure 5 As shown, the shield 1 has a positioning window 12, and the platform 44 is aligned with the positioning window 12. The sheath 2 has positioning teeth 48, which are inserted through the positioning window 12 and abut against the platform 44. The sheath 2 is made by injection molding. During assembly, the insulator 4 and the shield 1 are assembled first, and the platform 44 is aligned with the positioning window 12. Then, the sheath 2 is made by injection molding. During the injection molding process, the injection slurry passes through the positioning window 12 and enters the platform 44. The insulator 4 has a circular structure. After the platform 44 is opened on its surface, steps are formed on both sides of the axial direction of the platform 44. After the sheath 2 is injection molded, the insulator 4, the sheath 2, and the shield 1 are... Axial and circumferential positioning is achieved through positioning teeth 48. In this embodiment, radially protruding sealing rings 47 are provided on the insulators 4 located on both sides of the platform 44 axially. The sealing rings 47 are pressed against the inner wall of the shield 1, and an injection gap is formed between the shield 1, the insulators 4, and the two sealing rings 47. During injection molding, the injection slurry enters the injection gap, and the injection plastic in the injection gap forms a positioning sleeve 49. Therefore, no other axial positioning structure is required between the insulators 4 and the shield 1, nor between the shield 1 and the sheath 2, thus making the structure of the insulators 4 and the shield 1 simple and easy to manufacture. Figure 5As shown, the rear end of the shield 1 has a constriction 13, and the rear end face of the insulator 4 abuts against the inner wall of the constriction 13. The front end of the shield 1 is provided with an inwardly protruding inner spring 11. After the female connector 100 and the male connector 200 are inserted, the inner spring 11 on the female connector 100 overlaps with the outer wall of the shield on the male connector 200. During installation, when the insulator 4 abuts against the inner wall of the constriction 13, it indicates that the insulator 4 is installed in place. At this time, it is only necessary to rotate the insulator 4 so that the platform 44 is aligned with the positioning window 12. Furthermore, the constriction 13 of the shield 1 has an observation port 14 for easy observation of the rear end face of the insulator 4. When the rear end face of the insulator 4 abuts against the inner wall of the constriction 13, the operator can observe the rear end face of the insulator 4 through the observation port 14. Figure 7 As shown, the sheath 2 has an annular groove 23, the front end of which is an abutment end face 21. The toothed sleeve 3 has an inner spring piece 32, the front end of which abuts against the abutment end face 21. Several outwardly flared outer spring pieces 33 are provided on the rear end face of the toothed sleeve 3. During installation, when the front end of the inner spring piece 32 abuts against the abutment end face 21, the toothed sleeve 3 and the sheath 2 are installed in place. Furthermore, the toothed sleeve 3 of the shielding assembly 10 is pressed into the mounting cavity 41 of the female end base 20. A limiting step 43 is provided in the mounting cavity 41. The abutment ring 24 of the sheath 2 on the shielding assembly 10 abuts against the limiting step 43. Figure 6As shown, the front end of the toothed sleeve 3 is provided with a radially outward protruding ring 31. The outer spring piece 33 of the toothed sleeve 3 has a first bent portion 35 and a second bent portion 36. The outer spring piece 33 located between the first bent portion 35 and the second bent portion 36 forms a horizontal section. A pressing ring 22 is provided at the rear end of the sleeve 2 to press against the horizontal section. The outer spring piece 33 located at the rear end of the second bent portion 36 forms a helical tooth 34. Both the protruding ring 31 and the helical tooth 34 abut against the inner wall of the mounting cavity 41. When installing the shielding assembly 10, the shielding assembly 10 is inserted into the mounting cavity 41 from back to front. When the pressing ring 24 abuts against the limiting step 43, the shielding assembly 10 can no longer move forward, and the surface shielding assembly 10 is installed in place. At this time, the protruding ring 31 is squeezed into the mounting cavity 41, and the outer circle of the protruding ring 31 abuts against the inner wall of the mounting cavity 41, while the helical tooth 34 is in a compressed state, thereby making the water of the outer spring piece 33... The flat section tightly grips the sheath 2, and the contact area between the convex ring 31 and the mounting cavity 41 is small. Under the action of the extrusion force, the friction between the convex ring 31 and the mounting cavity 41 is relatively large. Therefore, a large axial force is required to achieve the relative displacement between the toothed sleeve 3 and the female end base 20. During insertion and extraction, the friction between the convex ring 31 and the mounting cavity 41, as well as the friction between the helical tooth 34 and the mounting cavity 41, must be overcome to allow the shielding component 1 to move axially. In actual use, the insertion and extraction force is much smaller than the friction between the convex ring 31 and the mounting cavity 41, as well as the friction between the helical tooth 34 and the mounting cavity 41. Therefore, under the radial extrusion action of the mounting cavity 41 on the toothed sleeve 3, the relative axial position of the toothed sleeve 3 and the sheath 2 is fixed. Under the reaction force of the toothed sleeve 3, the relative position of the toothed sleeve 3 and the female end base 20 is fixed, thereby achieving the fixation of the relative position of the shielding component 10 and the female end base 20. Figure 4 As shown, the insulator 4 has a backlash notch 7, and the inner conductor 5 has an outwardly extending backlash spring 6. The rear end face of the backlash spring 6 abuts against the rear end face of the backlash notch 7, thereby preventing the axial position of the inner conductor 5 and the insulator 4 from moving backward. During installation, when the backlash spring 6 springs into the backlash notch 7, it indicates that the insulator 4 and the inner conductor 5 are installed in place.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coaxial waterproof connector, characterized in that: Includes a female connector and a male connector, which are mated together. The female connector includes a female base, and a shielding component is installed in the mounting cavity of the female base; The male connector includes a male base, and a shielding component is also installed inside the cavity of the male base; The shielding assembly includes a shielding element, an insulator installed inside the shielding element, an inner conductor installed inside the insulator, a platform on the insulator, and radially protruding sealing rings on the insulators located on both axial sides of the platform. The sealing rings are pressed against the inner wall of the shielding element, and an injection gap is formed between the shielding element, the insulator, and the two sealing rings. A positioning window is provided on the shielding element, and the platform is aligned with the positioning window. A sheath is installed on the outside of the shielding element by injection molding, and the injection slurry of the sheath flows into the injection gap through the positioning window, forming a positioning sleeve and positioning teeth in the injection gap. A toothed sleeve is also installed on the sheath. The toothed sleeve on the female connector is pressed into the mounting cavity of the female base, and the toothed sleeve on the male connector is pressed into the cavity of the male base. When the female connector and the male connector are plugged in, the inner conductor of the female connector and the inner conductor of the male connector are connected, and cables are connected to both the inner conductor of the female connector and the inner conductor of the male connector. Sealing bodies are installed in the tail cavity of the female base and the tail cavity of the male base, and the cables pass through the corresponding sealing bodies.

2. The coaxial waterproof connector according to claim 1, characterized in that: Both the female end base and the male end base are equipped with waterproof caps at their tail ends.

3. A coaxial waterproof connector according to claim 1, characterized in that: The waterproof cover has a through groove, and also has several circumferentially spaced split grooves.

4. A coaxial waterproof connector according to claim 1, characterized in that: Both the female end base and the male end base are equipped with locking blocks at their tails, and the waterproof cover has a locking hole, in which the locking block is engaged.

5. A coaxial waterproof connector according to claim 1, characterized in that: The inner wall of the shielding component is provided with an annular groove that matches the sealing ring.

6. A coaxial waterproof connector according to claim 1, characterized in that: The toothed sleeve is provided with a radially outward protruding ring.

7. A coaxial waterproof connector according to claim 1, characterized in that: The female end base is provided with a plug at the mating end, and a sealing sleeve is provided on the plug, which is pressed into the mating cavity of the male end base.

8. A coaxial waterproof connector according to claim 1, characterized in that: The female end base is provided with a locking tongue, and the male end base is provided with a latch that engages with the locking tongue.

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