Bend connector

Abstract

The utility model relates to a kind of bent connectors, including front-end plug-in plug and socket, the plug includes plug shell and the plug insulator assembled in the plug shell, plug insulator is equipped with jack, the tail of plug shell is connected with plug tail, the plug tail extends along the axial direction of plug shell, and its tail side is provided with aperture, the front end of wire pressing cylinder extending perpendicularly to the axial direction of plug shell is inserted into plug tail from the aperture, and plug nut is screwed in plug tail, and wire pressing cylinder is pressed in plug tail by plug nut. The utility model connector plug tail uses bent accessory outlet mode, outlet does not need to fill glue, adopts nut structure fixed mode, and can realize the quick and reliable bent outlet assembly.

Description

Technical Field

[0001] This utility model pertains to connectors, specifically a bent connector. Background Technology

[0002] Most existing bend connectors use an integrated bend tail attachment, but this type of bend tail attachment is difficult to process and is not conducive to wire assembly. Especially for micro-sized bend connectors, the processing and assembly of existing bend connectors are relatively complex and require potting for fixation, which cannot meet the needs of rapid assembly. Summary of the Invention

[0003] To address the aforementioned issues, this utility model provides a novel bent connector structure that, through a split-assembly bent accessory design, meets the requirements for rapid wire assembly.

[0004] The purpose of this utility model and the technical problem it solves are achieved by the following technical solution. According to this utility model, a bent connector includes a plug and a socket with interlocking front ends. The plug includes a plug housing 7 and a plug insulator 5 assembled within the plug housing 7. A socket 8 is installed within the plug insulator. A plug tail 4 is connected to the tail of the plug housing 7. The plug tail 4 extends axially along the plug housing 7 and has a notch on one side of its tail. A wire clamping cylinder 19, extending perpendicularly to the axial direction of the plug housing 7, is inserted into the plug tail 4 through the notch. A plug nut 18, threadedly connected to the plug tail 4, presses the wire clamping cylinder 19 tightly within the plug tail 4.

[0005] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0006] In the aforementioned bent connector, the crimping cylinder 19 and the plug tail 4 are further engaged by a concave-convex structure to achieve anti-rotation and tensile strength of the crimping cylinder 19.

[0007] In the aforementioned bent connector, the crimping cylinder 19 is pressed by the plug nut 18 onto the radially extending end face of the plug tail 4, and the surface of the crimping cylinder 19 that mates with the end face is a plane.

[0008] The aforementioned bent connector also has an annular platform 191 on the outer periphery of the crimping cylinder 19. The front end face of the annular platform 191 is in clearance fit with the outer peripheral surface of the plug tail attachment 4. The annular platform 191 also has a limiting protrusion 1911 on the side near the plug nut 18 that fits with the plug tail attachment 4 and limits the circumferential positioning of the plug nut 18.

[0009] In the aforementioned bent connector, the surface of the limiting boss 1911 that circumferentially limits the plug nut 18 is an arc surface.

[0010] In the aforementioned bent connector, the socket 8 is stopped and limited axially forward by the first annular platform 81 on the outer periphery of its front end cooperating with the stepped surface inside the plug insulator 5; the plug tail 4 has a forward-facing stop surface 41, the front end of the plug sleeve 6 is fitted outside the socket 8, and at least two gaskets 3 are provided between the plug sleeve 6 and the stop surface 41, the gaskets 3 press the front end face of the plug sleeve 6 against the rear end face of the first annular platform 81.

[0011] In the aforementioned bent connector, the plug insulator 5 achieves axial forward blocking and limiting by cooperating with the stepped surface of its front outer periphery and the stepped surface of the plug housing 7, and achieves axial backward blocking and limiting by cooperating with the stop surface 41 at its rear end.

[0012] In the aforementioned bent connector, at least one first sealing ring 2 is provided between the plug sleeve 6 and the stop surface 41, which can achieve the sealing between the plug insulator 5 and the tail wire of the socket 8.

[0013] The aforementioned bent connector includes a socket housing 15, a socket insulator 14 positioned and assembled within the socket housing 15, and a pin 17 assembled within the socket insulator 14. The pin 17 achieves anti-retraction by engaging with the stepped surface inside the socket insulator 15 through a second annular platform 171 on the outer periphery of its front end. The tail of the pin 17 extends out of the socket insulator 14 and engages with the socket insulator 14 through a pin fixing nut 13 locked by its outer periphery thread, thereby achieving axial forward blocking and limiting.

[0014] The aforementioned connector also includes a connecting nut 11 on the outer periphery of the front end of the plug housing 7. When the connecting nut is fitted and locked with the socket housing 15, the front end face of the socket insulator 14 presses the second sealing ring 10 on the outer periphery of the front end of the plug insulator 5 onto the stepped surface of the front end of the plug insulator 5, thereby achieving a seal between the plug and the socket.

[0015] Compared with the prior art, this utility model has significant advantages and beneficial effects. Through the above technical solution, this utility model achieves considerable technological advancement and practicality, and has broad industrial application value. It possesses at least the following advantages: The connector plug of this utility model adopts a bent accessory cable exit method at the tail. No potting is used at the cable exit point. Instead, a nut structure is used for fixing, which can achieve quick and reliable bent cable exit assembly.

[0016] After the connector plug and socket of this utility model are fully engaged, the interface between the plug insulator and the socket insulator is effectively sealed by compressing the O-ring to achieve a certain amount of compression. This effectively isolates the contact parts from the outside world, giving the connector the ability to withstand low air pressure and moisture.

[0017] This new connector incorporates a plug sleeve between the plug insulator and the socket, ensuring the socket is installed correctly without misalignment. Simultaneously, an O-ring sealing structure is used at the tail, along with additional gaskets for reinforcement and compression, guaranteeing overall product performance and facilitating easier installation.

[0018] The connector plug of this invention uses a first sealing ring (O-ring) to seal the wiring at the tail end. Compared with the traditional potting structure, the assembly is simple. The structural design achieves a suitable O-ring compression amount, ensuring a reliable seal at the tail end of the connector.

[0019] This utility model's socket end achieves rapid and reliable positioning of the pin within the insulation body through a pin fastening nut and a ring platform around the front end of the pin. It is not only simple to assemble, but also has low requirements for installation and machining accuracy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the bent connector plug structure of this utility model; Figure 2 This is a schematic diagram of the bent connector socket structure of this utility model; Figure 3 This is a schematic diagram of the bent connector of this utility model in the mating state.

[0021] [Explanation of Key Component Symbols] 1-Pressure ring; 2-First sealing ring; 3-Gasket; 4-Plug tail; 5-Plug insulator; 6-Plug sleeve; 7-Plug housing; 8-Socket; 9-Snap ring; 10-Second sealing ring; 11-Connecting nut; 12-Socket sleeve; 13-Pin fixing nut; 14-Socket insulator; 15-Socket housing; 16-Socket fixing nut; 17-Pin; 18-Plug nut; 19-Crimping tube; 20-Keyway; 21-Raised key. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended purpose of the invention, the following detailed description of the specific implementation method, structure, features and effects of the bent connector proposed according to this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0023] Please see Figure 1-3 This is a schematic diagram of the structure of each part of the bend connector of this utility model. The bend connector includes a plug and a socket for interlocking at the front end. The plug includes a plug housing 7. The plug housing 7 is provided with a plug insulator 5. The plug insulator 5 has a cavity extending along the axial direction. The cavity has a three-stage stepped hole structure with the inner diameter gradually increasing from front to back. The three-stage stepped hole structure forms two rearward stepped surfaces due to the change in hole diameter. The two stepped surfaces are the first-stage stepped surface and the second-stage stepped surface from front to back.

[0024] The socket 8, assembled within the plug insulator 5, achieves axial forward stopping and limiting within the plug insulator 5 through a stop engagement between its outer circumferential platform 81 and the first-level stepped surface within the plug insulator 5. The plug insulator 5 also includes a plug sleeve 6, the front end of which presses against the rear end face of the outer circumferential platform 81 of the socket 8, causing the front end of the platform 81 to press against the first-level stepped surface within the plug insulator 5. The front end of the plug sleeve 6 fits around the socket 8 to prevent tilting and also enhances the strength of the socket 8. In this embodiment, the plug sleeve 6 has an inner diameter that is smaller at the front and larger at the rear, such that its front inner diameter is comparable to the outer circumferential size of the socket 8, while the portion further away from the socket 8 has an increased inner diameter, resulting in a reduced wall thickness. The outer circumference of the plug sleeve 6 has a stepped shaft structure with a smaller front and a larger rear, and there is a gap between the forward-facing stepped surface formed at the diameter change of the outer stepped shaft and the rearward-facing second-level stepped surface within the plug insulator 5. In this embodiment, a socket sleeve 12 is also provided on the outer periphery of the front end of the socket 8. The front end face of the socket 8 is located inside the socket sleeve 12, and the front end of the socket sleeve 12 has a guide hole with a radial dimension that gradually decreases from front to back, which is used to guide the pin to be inserted into the socket.

[0025] The plug housing 7 is also connected to a plug tail attachment 4 extending axially along the plug housing 7. The rear end of the plug insulator 5 is located inside the plug tail attachment 4, and the plug tail attachment 4 has a forward-facing stop surface 41. The stop surface 41 presses against the end face of the tail of the plug insulator 5, so that the stepped surface of the outer periphery of the front end of the plug insulator 5 presses against the rearward-facing limiting surface of the inner periphery of the plug housing 7.

[0026] In this embodiment, the stop surface 41 is formed by an inward protrusion of the inner circumference of the plug tail 41, and the stop surface 41 is the front end face of the protrusion. The forward-facing stepped surface of the plug insulator 5 is formed by the change in the radial dimension of the outer circumference of the front end of the plug insulator 5, and the outer circumference of the front end of the plug insulator 5 has a stepped shaft structure with the radial dimension increasing from front to back. Specifically, the outer circumference of the plug insulator 5 has a three-level stepped structure with the radial dimension changing three times from front to back, forming two forward-facing stepped surfaces, namely the first stepped surface at the front end and the second stepped surface at the rear end, and the stepped surface that cooperates with the plug housing 7 is the second stepped surface.

[0027] A plurality of gaskets 3 are provided between the stop surface 41 and the plug sleeve 6. Preferably, a first sealing ring 2 is provided between at least two gaskets 3. The provision of the first sealing ring 2 not only increases the elastic compressive force between the stop surface 41 and the plug sleeve 6, but also enables the sealing between the plug insulator 5 and the conductive connection between the plug and the end of the socket 8.

[0028] The plug tail 4 has a notch on one side. The front end of the crimping tube 19, which extends axially from the plug housing 7, is inserted into the plug tail 4 through this notch and connected to the plug tail 4, so that the wire connected to the tail of the socket 8 extends out through the crimping tube 19, achieving a bent wire exit. In this embodiment, the tail of the plug tail 4 is open and has internal threads. The plug nut 18 is tightened onto the tail of the plug tail 4, sealing the plug tail 4 and pressing the front end of the crimping tube 19 into the plug tail 4, thereby achieving a fixed connection between the crimping tube 19 and the plug tail 4. To prevent the wire pressing cylinder 19 from rotating and to enhance its tensile strength, a keyway 20 is provided on the side of the wire pressing cylinder 19. A protruding key 21 that matches the keyway 20 is provided on the plug tail attachment 4. The wire pressing cylinder 19 is rotated to a position where the keyway 20 on it corresponds to the protruding key 21 on the plug tail attachment 4. Then, the front end of the wire pressing cylinder 19 is inserted into the plug tail attachment 4 axially from back to front. Finally, the plug nut 18 is tightened to press the wire pressing cylinder 19 into the plug tail attachment 4.

[0029] In this embodiment, the surface of the wire clamping cylinder 19 that axially stops the plug tail attachment 4 is a plane, that is, the surface of the wire clamping cylinder 19 with the keyway 20 is a plane. When the plug nut 18 is tightened, the wire clamping cylinder 19 is pressed against the radially extending end face of the plug tail attachment 4 formed by the notch through its plane.

[0030] In other embodiments of this utility model, the positions of the keyway 20 and the convex key 21 can be interchanged. The keyway 20 can be set on the end face of the plug tail extending radially, and the convex key can be set on the outer peripheral surface of one side of the wire pressing cylinder 19.

[0031] In this embodiment, the outer periphery of the tail of the wire pressing cylinder 19 is also provided with a pressing ring 1 for pressing the wire. In order to enhance the tensile strength of the cable, the outer periphery of the wire pressing cylinder 19 is also provided with a number of toothed grooves distributed at intervals along the axial direction. The contact force between the cable and the wire pressing cylinder 19 is enhanced by the toothed grooves.

[0032] The outer periphery of the pressure coil 19 is also provided with a ring platform 191. The front end face of the ring platform 191 can stop and limit the outer periphery of the plug tail attachment 4, and the rear end face can stop and limit the front end of the pressure coil 1. The side of the ring platform 191 near the plug nut 18 also forms a limiting protrusion 1911 that cooperates with the plug tail attachment 4 to limit the circumferential movement of the plug nut 18. Preferably, the surface of the limiting protrusion 1911 that cooperates with the plug nut 18 to limit the movement is an arc surface.

[0033] This utility model features a bent-end connector with a wire exit. In this embodiment, before crimping the wire, the outer layer of the wire is peeled off, the shielding mesh is loosened, and a crimping cylinder 19, a gasket 3, a first sealing ring 2 (in this embodiment, an O-ring), and another gasket 3 are sequentially installed around the wire. After assembly, the wire is crimped. The crimped wire is then inserted into the plug insulator, and the first sealing ring and gasket are pushed into the plug insulator by the pressure of the plug tail attachment. The crimping cylinder is rotated so that its keyway engages with the protruding key on the plug tail attachment. The plug nut engages with the plug tail attachment via threads, and the plug nut is screwed on to secure the crimping cylinder. The loosened shielding mesh is attached to the surface of the crimping cylinder, and the surface of the crimping cylinder is designed with an inner ridge structure to prevent the shielding mesh from retracting. Compared to the traditional potting structure, the assembly is simpler, and the structural design achieves a suitable O-ring compression amount, ensuring a reliable seal at the connector tail.

[0034] In this embodiment, the outer periphery of the tail of the plug housing 7 is provided with an external thread, and the plug tail attachment 4 is locked and fixed to the tail of the plug housing 7 by its inner periphery thread. However, in other embodiments, the plug housing 7 and the plug tail attachment 4 can also be connected by other means.

[0035] The plug housing 7 is also provided with a connecting nut 11 on the outer periphery of its front end. Preferably, the connecting nut 11 is connected to the plug housing 7 in a tensile manner by a snap ring 9.

[0036] The outer periphery of the front end of the plug insulator 5 is also provided with a second sealing ring 10 for sealing the mating surface when the plug and socket are mated. The rear end of the second sealing ring 10 is blocked by the first stepped surface of the front end of the socket insulator 5. When the plug and socket are mated, the front end of the socket insulator 14 presses the second sealing ring 10 against the first stepped surface, and the second sealing ring 10 maintains the seal between the plug insulator 5 and the plug insulator 5.

[0037] The socket includes a socket housing 15, a socket insulator 14, and a pin 17. The socket insulator 14 is positioned and assembled inside the socket housing 15, with its tail extending out of the socket housing 15. The pin 17 is assembled inside the socket insulator 14, and its rear end face mates with the inner stepped surface of the socket insulator 14 to achieve anti-reverse limiting after assembly. The tail of the pin 17 extends out of the socket insulator 14, and the outer circumference of the tail of the pin 17 is provided with external threads. The front end face of the pin fixing nut 13, which is threaded onto the pin 17, is stopped and limited by the tail end face of the socket insulator 14. At this time, the front end of the pin 17 is stopped and limited by the inner stepped surface of the socket insulator 14, and the rear end is axially limited forward by the cooperation of the pin fixing nut 13 and the socket insulator 14. This utility model achieves reliable positioning of the pin 17 by the engagement of the tail thread of the pin 17 with the pin fixing nut 13. Furthermore, the axial extension of the tail thread of the pin 17 can eliminate the axial error between the socket insulator and the pin caused by processing or assembly problems during the positioning and assembly of the pin 17, thus ensuring the reliable positioning of the pin 17.

[0038] In this embodiment, the tail of the pin 17 is tapered, with its radial dimensions gradually decreasing from front to back, to meet the connection requirements with the adapter structure. The pin 17 has a small-diameter section at the front end and a large-diameter section at the rear end, wherein the small-diameter section is used to mate with the plug end socket, and the large-diameter section is used to cooperate with and position the socket insulator 14, wherein the outer periphery of the front end of the large-diameter section is provided with a ring platform 171.

[0039] In this embodiment, the cavity of the socket insulator 14 has a stepped hole structure that is larger at the front and smaller at the back, wherein the large hole section at the front end and the small hole section at the rear end form a stepped surface for stopping and limiting the rear end face of the outer circumference of the pin 17.

[0040] In this embodiment, the outer periphery of the front end of the socket housing 15 is provided with threads for fitting and locking with a connecting nut at the plug end. The outer periphery of the socket housing 15 is also provided with a flange for mounting and fixing to the device panel. To facilitate fixing the socket housing 15 to the device panel, a socket fixing nut 16 is also threaded onto the outer periphery of the socket housing 15, which presses the socket housing 15 firmly onto the device panel.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A right-angle connector, comprising a plug and a socket for mating at their front ends, the plug comprising a plug housing and a plug insulator fitted within the plug housing, the plug insulator having a socket, characterized in that: The plug housing is connected to a plug tail attachment at the tail end. The plug tail attachment extends axially along the plug housing and has a notch on one side of its tail end. The front end of the wire clamping tube, which extends axially perpendicularly to the plug housing, is inserted into the plug tail attachment through the notch. The plug nut, which is threaded into the plug tail attachment, presses the wire clamping tube tightly into the plug tail attachment.

2. The bent connector according to claim 1, characterized in that: The pressure tube and the plug tail are also connected by a concave-convex structure to prevent rotation and resist tension of the pressure tube.

3. The bent connector according to claim 2, characterized in that: The crimping tube is pressed onto the radially extending end face of the plug tail by the plug nut, and the surface of the crimping tube that mates with the end face is a plane.

4. The bent connector according to claim 3, characterized in that: The outer periphery of the wire clamping cylinder is also provided with a ring platform. The front end face of the ring platform is in clearance fit with the outer periphery of the plug tail. The side of the ring platform near the plug nut is also formed with a limiting protrusion that fits with the plug tail and limits the circumferential movement of the plug nut.

5. The bent connector according to claim 4, characterized in that: The surface of the limiting boss that circumferentially limits the plug and nut is an arc surface.

6. The bent connector according to any one of claims 1-5, characterized in that: The socket is stopped and limited axially forward by the first ring platform on the outer periphery of its front end and the stepped surface inside the plug insulator; the plug tail has a forward-facing stop surface, the front end of the plug sleeve is fitted outside the socket, and at least two gaskets are provided between the plug sleeve and the stop surface, which make the front end of the plug sleeve press against the rear end face of the first ring platform.

7. The bent connector according to claim 6, characterized in that: The plug insulator achieves axial forward blocking and limiting by engaging its front outer peripheral stepped surface with the inner stepped surface of the plug housing, and achieves axial backward blocking and limiting by engaging its rear end face with the blocking surface.

8. The bent connector according to claim 1, characterized in that: At least one first sealing ring is provided between the plug sleeve and the stop surface, which can achieve the sealing between the plug insulator and the wire at the end of the socket.

9. The bent connector according to any one of claims 1-5 and 7-8, characterized in that: The socket includes a socket housing, a socket insulator positioned and assembled within the socket housing, and a pin assembled within the socket insulator. The pin is prevented from moving backward by engaging with the stepped surface within the socket insulator via a second annular platform on its outer periphery at its front end. The tail of the pin extends out of the socket insulator and engages with the socket insulator via a pin fixing nut that is locked by threads on its outer periphery, thereby achieving axial forward blocking and limiting.

10. The bent connector according to claim 9, characterized in that: The plug housing is also provided with a connecting nut on the outer periphery of the front end. When the connecting nut is fitted and locked with the socket housing, the front end face of the socket insulator presses the second sealing ring on the outer periphery of the front end of the plug insulator onto the stepped surface of the front end of the plug insulator, thereby achieving a seal between the plug and the socket.

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