Micro connector

Abstract

The utility model relates to a micro connector, which comprises a plug and a socket that are inserted into each other, the plug comprises a plug shell and a plug insulator assembled in the plug shell, a jack hole is arranged in the plug insulator, the jack hole is matched with a stepped surface in the plug insulator through a first ring table at the front end of the jack hole to realize axial forward stop limiting, a plug tail is connected to the tail part of the plug shell, the tail cavity of the plug tail has a forward stop surface, a plug sleeve is sleeved on the outside of the jack hole at the front end, at least two gaskets are arranged between the plug sleeve and the stop surface, and the gaskets press the rear end surface of the first ring table against the front end surface of the plug sleeve. The plug sleeve is arranged between the plug insulator and the jack hole, the jack hole is prevented from being skewed through the plug sleeve, and the stable and reliable positioning of the jack hole is ensured.

Description

Technical Field

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

[0002] Traditional connector contact fixing methods often use insert fixing (the contact is fixed by inserting it into the insulator), but the potting and injection molding process is difficult to form. The position of the contact is not easy to guarantee when using the forced fixing and boss fixing methods, which can easily lead to problems such as skewing and retraction, resulting in the pin holes not being able to be inserted. Summary of the Invention

[0003] To solve the above problems, this utility model provides a novel micro-miniature connector with a structure that achieves reliable positioning of the socket contact by sleeved with a plug sleeve around the outer periphery of the socket contact.

[0004] The purpose of this utility model and the technical problem it solves are achieved by the following technical solution. According to the micro-miniature connector proposed in this utility model, it includes a plug and a socket for front-end mating. 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. The socket 8 achieves axial forward blocking and limiting by engaging with the stepped surface inside the plug insulator 5 through a first annular platform 81 on its front outer periphery. A plug tail attachment 4 is connected to the tail of the plug housing 7. The tail attachment 4 has a forward-facing blocking surface 41 within its tail cavity. The front end of a plug sleeve 6 is fitted over the socket 8, and at least two gaskets 3 are provided between the plug sleeve 6 and the blocking surface 41. These gaskets 3 press the front end of the plug sleeve 6 against the rear end face of the first annular platform 81.

[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 miniature 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.

[0007] In the aforementioned miniature connector, at least one first sealing ring 2 is provided between the plug sleeve 6 and the stop surface 41. The first sealing ring 2 can achieve a seal between the plug insulator 5 and the tail wire of the socket 8.

[0008] The aforementioned micro-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.

[0009] The aforementioned micro-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.

[0010] The aforementioned micro-connector also has a socket sleeve 12 on the outer periphery of the front end of the socket 8. The front end of the socket sleeve 12 has a guiding structure to guide the pin 17 into the socket 8.

[0011] The aforementioned micro-connector also has a clamping ring 1 for clamping the wire on the outer periphery 4 of the plug tail.

[0012] In the aforementioned miniature connector, the connecting nut 11 is connected to the plug housing 7 via a snap ring 9.

[0013] The aforementioned miniature connector has a flange 151 on the outer periphery of the socket housing 15, and a socket fastening nut 14 on the outer periphery of the socket housing 15, which presses and fixes the flange 151 to the device panel.

[0014] 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: 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.

[0015] 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.

[0016] 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.

[0017] 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

[0018] Figure 1 This is a schematic diagram of the micro-miniature connector plug structure of this utility model; Figure 2 This is a schematic diagram of the structure of the miniature connector socket of this utility model; Figure 3 This is a schematic diagram of the mating state of the micro-miniature connector of this utility model.

[0019] [Explanation of Key Component Symbols] 1-Compression ring; 2-First sealing ring; 3-Gasket; 4-Plug tail; 5-Plug insulator; 6-Plug sleeve; 7-Plug housing; 8-Socket; 81-First ring platform; 9-Snap ring; 10-Second sealing ring; 11-Connecting nut; 12-Socket sleeve; 13-Pin fixing nut; 14-Socket insulator; 15-Socket housing; 151-Flange; 16-Socket fixing nut; 17-Pin; 171-Second ring platform. Detailed Implementation

[0020] 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 micro-miniature connector proposed according to this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] Please see Figure 1-3 This is a schematic diagram of the structure of each part of the micro-miniature connector of this utility model. The 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.

[0022] 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.

[0023] 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.

[0024] The plug housing 7 is also connected to a plug tail attachment 4 at its tail end. 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 end 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.

[0025] 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.

[0026] Multiple 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 first sealing ring 2 not only increases the elastic compressive force between the stop surface 41 and the plug sleeve 6, but also achieves a seal between the plug insulator 5 and the wire connected to the end of the socket 8.

[0027] The outer periphery of the plug tail attachment 4 is also provided with a clamping ring 1 for pressing the aramid layer of the cable folding. In order to enhance the tensile strength of the cable at the plug tail, the outer periphery of the plug tail attachment 4 is also provided with a number of toothed grooves distributed at intervals along the axial direction. The contact force between the cable and the plug tail attachment 4 is enhanced by the toothed grooves.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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 a second ring platform 171 is provided on the outer periphery of the front end of the large-diameter section.

[0033] 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.

[0034] 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 plug-end connecting nut. The outer periphery of the socket housing 15 is also provided with a flange 151 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.

[0035] In this embodiment, the socket insulator 14 and the socket housing 15 are assembled and positioned by threaded locking.

[0036] 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 miniature connector comprising a plug and a socket for mating at the 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 socket is stopped and limited axially forward by the first annular platform on its front end cooperating with the stepped surface inside the plug insulator; the plug housing is connected to a plug tail attachment at the tail end, the tail attachment has a forward-facing stop surface in its tail cavity, 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, the gaskets press the front end of the plug sleeve against the rear end face of the first annular platform.

2. The micro-miniature connector according to claim 1, 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.

3. The micro-miniature 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.

4. The micro-miniature connector according to any one of claims 1-3, 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.

5. The micro-miniature connector according to claim 4, 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.

6. The micro-miniature connector according to claim 5, characterized in that: The outer periphery of the front end of the socket is also provided with a socket sleeve, and the front end of the socket sleeve has a guide structure to guide the pin into the socket.

7. The micro-miniature connector according to claim 5, characterized in that: The outer periphery of the plug tail is also provided with a clamping ring for clamping the wire.

8. The micro-miniature connector according to claim 5, characterized in that: The connecting nut is connected to the plug housing via a snap ring.

9. The micro-miniature connector according to claim 5, characterized in that: The socket housing is provided with a flange on its outer periphery, and a socket fastening nut is also provided on the outer periphery of the socket housing. The flange is pressed and fixed to the equipment panel by the socket fastening nut.

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