A navigation plug connector for a network commissioning device

Abstract

The utility model discloses a kind of navigation plug-in connectors for distribution network detector, it is related to distribution network detector technical field, including shell unit, the shell unit includes upper shell and lower shell, the upper shell is threadedly connected with lower shell;Base unit, the base unit is set in the lower shell, and includes bottom disc.The beneficial effects of the utility model are as follows: by setting elastic sheet and its elastic pressure end, after pin insertion, it can provide self-adapting, continuous lateral compression force, effectively compensate wear gap, ensure that low contact resistance and stable electrical connection are maintained after long-term use, the plug-in cooperation of fixed pipe and connecting pipe, combined with the longitudinal fastening of locking bolt and the thread locking of shell, form multiple mechanical locking.

Description

Technical Field

[0001] This utility model relates to the field of power distribution network testing instrument technology, and in particular to an aviation connector for power distribution network testing instruments. Background Technology

[0002] In the field commissioning and defect diagnosis of distribution network automation equipment, testers need to frequently connect and disconnect with devices such as feeder terminal units (FTUs) and distribution terminal units (DTUs) via aviation connectors. Although the aviation connectors used by existing testers offer the convenience of plug-and-play, after long-term repeated plugging and unplugging, the pins and sockets wear down due to repeated friction, leading to increased clearance, decreased connection stability, and poor contact in vibration environments. Wear and oxidation of the contact surfaces can increase contact resistance, causing signal attenuation, voltage drops, and even communication errors, seriously affecting the accuracy of test data. Once the reliability of the connectors decreases, frequent replacement or repair is required, increasing maintenance costs and time. Utility Model Content

[0003] In view of the above-mentioned problems in the prior art, this utility model is proposed.

[0004] The purpose of this invention is to provide an aviation connector for a power distribution network testing instrument, which aims to solve the problem of poor contact caused by repeated plugging and unplugging of the aviation connector.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a connector for a power distribution network detector, comprising a housing unit, wherein the housing unit comprises an upper housing and a lower housing, and the upper housing and the lower housing are threadedly connected;

[0006] A base unit, which is disposed within the lower housing and includes a chassis;

[0007] The plug-in unit includes a plug assembly and a wiring connection assembly. The plug assembly includes a plug exposed on the upper housing. The plug has an internal socket and a connection hole communicating with the socket. The wiring connection assembly is mounted on the chassis.

[0008] The line connection assembly includes a resilient contact having a spring-loaded end that extends into a communicating cavity formed by the jack and the connection hole, configured to be compressed and apply continuous lateral contact pressure to the jack when an external jack is inserted.

[0009] As a preferred embodiment of the aviation connector for the power distribution network testing instrument of this utility model, the line connection assembly includes:

[0010] The fixing tube is fixedly connected to the chassis;

[0011] A connecting tube is detachably inserted into the fixed tube, and its top communicates with the connecting hole;

[0012] The elastic contact piece is disposed at the connection interface between the connecting pipe and the fixed pipe.

[0013] As a preferred embodiment of the aviation connector for the power distribution network detector of this utility model, the bottom of the connecting pipe is provided with a slot, and the inner wall of the fixing pipe is formed with a protrusion that cooperates with the slot.

[0014] As a preferred embodiment of the connector for the power distribution network testing instrument of this utility model, the protrusion has a slot, and the main body of the spring is inserted into the slot; the elastic contact also includes a connecting ear, which extends from the side wall of the fixing tube.

[0015] As a preferred embodiment of the aviation connector for the power distribution network tester of this utility model, the line connection assembly further includes a locking bolt, the threaded end of which passes through the plug and is threadedly connected to the chassis.

[0016] As a preferred embodiment of the aviation connector for the power distribution network detector of this utility model, the base unit further includes a wiring assembly, which includes a wire groove formed on the chassis and a protective sleeve fixed to the lower surface of the chassis.

[0017] As a preferred embodiment of the aviation connector for the power distribution network testing instrument of this utility model, the plug assembly further includes a limiting piece fixed to the outer wall of the plug; when the outer shell unit is locked, the limiting piece and the chassis together clamp and fix the plug unit and the base unit.

[0018] As a preferred embodiment of the aviation connector for the power distribution network testing instrument of this utility model, wherein: the insertion hole and the connection hole are coaxially arranged and have the same inner diameter.

[0019] The beneficial effects of the aviation connector for the power distribution network tester of this utility model are as follows: by setting the spring and its spring end, it can provide adaptive and continuous lateral clamping force after the pin is inserted, effectively compensating for wear gaps, ensuring that low contact resistance and stable electrical connection are maintained after long-term use. The plug-in cooperation between the fixing tube and the connecting tube, combined with the longitudinal fastening of the locking bolt and the threaded locking of the outer shell, forms multiple mechanical locking. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is an exploded view of the structure of this utility model.

[0023] Figure 3 This is an exploded view of the structure of the plug-in unit in this utility model.

[0024] Figure 4 This is a schematic diagram of the base unit in this utility model.

[0025] Figure 5 This is an exploded view of the structure of the elastic contact element in this utility model.

[0026] In the diagram: 100, outer shell unit; 110, upper shell; 120, lower shell; 200, base unit; 210, chassis; 211, cable tray; 220, wiring assembly; 221, protective sleeve; 300, plug unit; 310, plug assembly; 311, plug; 311a, socket; 311b, connection hole; 312, limiting piece; 320, wiring connection assembly; 321, fixing tube; 321a, protrusion; 322, connecting tube; 322a, slot; 323, locking bolt; 330, elastic contact; 331, spring; 331a, spring-loaded end; 332, connecting ear. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0030] Example 1

[0031] Reference Figures 1 to 5 As shown, this is the first embodiment of the present invention. This embodiment provides an aviation connector for a power distribution network detector, including a housing unit 100. The housing unit 100 includes an upper housing 110 and a lower housing 120, and the upper housing 110 and the lower housing 120 are threadedly connected.

[0032] The base unit 200 is disposed within the lower housing 120 and includes a chassis 210;

[0033] The plug unit 300 includes a plug assembly 310 and a line connection assembly 320. The plug assembly 310 includes a plug 311 exposed on the upper housing 110. The plug 311 has a socket 311a and a connection hole 311b communicating with the socket 311a. The line connection assembly 320 is mounted on the chassis 210.

[0034] The line connection assembly 320 includes an elastic contact 330, which has a spring-loaded end 331a that extends into a communicating cavity formed by a socket 311a and a connection hole 311b. The elastic contact 330 is configured to be squeezed and apply continuous lateral contact pressure to the socket when an external pin is inserted.

[0035] It should be noted that the design of the spring end 331a extending into the communicating cavity ensures that the side of the external pin can be subjected to elastic pressure applied by the spring end 331a in a direction perpendicular to the pin axis at any effective depth position during the insertion process. This lateral pressure does not depend on the radial interference fit between the traditional socket and the pin, thus effectively avoiding the problem of increased radial clearance caused by repeated insertion and removal wear, thereby achieving long-term stable electrical contact.

[0036] like Figures 2 to 5 As shown, in a preferred embodiment, the line connection assembly 320 includes:

[0037] Fixed tube 321 is fixedly connected to chassis 210;

[0038] The connecting tube 322 is detachably inserted into the fixing tube 321, and its top communicates with the connecting hole 311b;

[0039] Among them, the spring piece 331 of the elastic contact 330 is disposed at the connection section between the connecting pipe 322 and the fixed pipe 321.

[0040] It should be noted that by placing the spring piece 331 at the interface between the connecting tube 322 and the fixing tube 321, the installation position of the spring piece 331 is relatively concealed and protected by the surrounding structure. The fixing tube 321 provides a stable mounting base for the spring piece 331, while the insertion of the connecting tube 322 completes the construction of the pin guide channel. This split tubular structure not only facilitates the installation and maintenance of the spring piece 331, but also physically isolates the elastic contact area from the external environment, reducing the risk of contamination and oxidation.

[0041] like Figure 5 As shown, in a preferred embodiment, the bottom of the connecting tube 322 is provided with a slot 322a, and the inner wall of the fixing tube 321 is formed with a protrusion 321a that cooperates with the slot 322a.

[0042] It should be noted that the cooperation between the slot 322a and the protrusion 321a constitutes a simple and effective radial limiting and circumferential anti-rotation mechanism. When the connecting tube 322 is inserted into the fixing tube 321, the protrusion 321a engages in the slot 322a, which can precisely limit the insertion depth of the connecting tube 322 and prevent it from rotating relative to the fixing tube during subsequent use. This ensures the alignment accuracy and long-term stability of the top of the connecting tube 322 and the bottom connecting hole 311b of the plug 311, and avoids poor contact or assembly stress caused by misalignment of internal parts.

[0043] like Figure 5 As shown, in a preferred embodiment: a slot is provided on the protrusion 321a, and the main body of the spring piece 331 is inserted into the slot; the elastic contact 330 also includes a connecting ear 332, which extends from the side wall of the fixing tube 321.

[0044] It should be noted that a special slot is opened on the protrusion 321a to fix the main body of the spring 331, which realizes the precise positioning and firm installation of the spring 331, ensuring that its spring end 331a can be accurately inserted into the predetermined position. The connecting ear 332 serves as the current lead-out end of the spring 331, extending from the side wall of the fixing tube 321, providing a convenient and stable interface for the welding or crimping of external wires, and ensuring low resistance and reliability of the current path.

[0045] like Figure 3 As shown, in a preferred embodiment, the line connection assembly 320 further includes a locking bolt 323, the threaded end of which passes through the plug 311 and is threadedly connected to the chassis 210.

[0046] It should be noted that the locking bolt 323 provides a longitudinal locking force from the top of the plug 311 to the chassis 210. This locking force secures the plug 311 and the chassis 210 together as a whole, effectively counteracting the axial stress on the plug 311 caused by frequent plugging and unplugging operations, and preventing axial loosening of internal components.

[0047] like Figure 4 As shown, in a preferred embodiment, the base unit 200 further includes a wiring assembly 220, which includes a wire channel 211 formed on the chassis 210 and a protective sleeve 221 fixed to the lower surface of the chassis 210.

[0048] It should be noted that the wire groove 211 is used to organize and fix the internal wires introduced from the protective sleeve 221, and guide them to the welding points such as the connecting lug 332 of the spring piece 331, so as to prevent the wires from moving messily in the housing or interfering with moving parts.

[0049] like Figure 2 As shown, in a preferred embodiment, the plug assembly 310 further includes a limiting piece 312 fixed to the outer wall of the plug 311; when the housing unit 100 is locked, the limiting piece 312 and the chassis 210 together clamp and fix the plug-in unit 300 and the base unit 200.

[0050] like Figures 2 to 3 As shown, in a preferred embodiment, the insertion hole 311a and the connection hole 311b are coaxially arranged and have the same inner diameter.

[0051] It should be noted that the locking action of the limiting piece 312 in conjunction with the locking action of the outer shell unit 100 enables the internal functional modules (the assembly of the plug-in unit 300 and the base unit 200) to be quickly and reliably fixed in the shell. When the upper shell 110 and the lower shell 120 are tightened, the inner wall of the upper shell 110 presses the limiting piece 312 downward, and the limiting piece 312 then transmits the pressure to the chassis 210, thereby axially pressing the entire internal assembly into the lower shell 120.

[0052] Working principle:

[0053] During testing, the connector is inserted into the socket. When the external test pin is inserted into the socket 311a of this connector, the pin continues to penetrate deeper, passing through the connection hole 311b and entering the inner cavity of the connecting tube 322. During this process, the side of the pin presses against the spring end 331a of the spring clip 331, causing it to elastically deform. The rebound force generated by the spring end 331a forms a continuous and stable lateral contact pressure acting on the side of the pin. This pressure ensures a tight electrical contact between the pin and the spring end 331a (and thus, communication with the external circuit via the connecting ear 332), and this pressure does not significantly decrease due to slight wear, thereby achieving a highly reliable electrical connection.

[0054] Importantly, the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An aviation connector for a power distribution network testing instrument, characterized in that: include, The outer casing unit (100) includes an upper casing (110) and a lower casing (120), wherein the upper casing (110) and the lower casing (120) are threadedly connected; A base unit (200) is disposed within the lower housing (120) and includes a chassis (210). The plug unit (300) includes a plug assembly (310) and a line connection assembly (320). The plug assembly (310) includes a plug (311) exposed on the upper housing (110). The plug (311) has a socket (311a) and a connection hole (311b) communicating with the socket (311a). The line connection assembly (320) is mounted on the chassis (210). The line connection assembly (320) includes a resilient contact (330) having a spring-loaded end (331a) that extends into a communicating cavity formed by the socket (311a) and the connection hole (311b), and is configured to be compressed and apply continuous lateral contact pressure to the socket when an external pin is inserted.

2. The aviation connector for a distribution network detector as described in claim 1, characterized in that: The line connection assembly (320) includes: A fixed tube (321) is fixedly connected to the chassis (210); The connecting tube (322) is detachably inserted into the fixed tube (321), and its top communicates with the connecting hole (311b); The elastic contact (330) has a spring piece (331) located at the connection interface between the connecting pipe (322) and the fixed pipe (321).

3. The aviation connector for a distribution network detector as described in claim 2, characterized in that: The bottom of the connecting tube (322) is provided with a slot (322a), and the inner wall of the fixing tube (321) is formed with a protrusion (321a) that cooperates with the slot (322a).

4. The aviation connector for a distribution network detector as described in claim 3, characterized in that: The protrusion (321a) has a slot, and the main body of the spring piece (331) is inserted into the slot; the elastic contact (330) also includes a connecting ear (332), which extends from the side wall of the fixing tube (321).

5. The aviation connector for a distribution network detector as described in claim 2, characterized in that: The line connection assembly (320) also includes a locking bolt (323), the threaded end of which passes through the plug (311) and is threadedly connected to the chassis (210).

6. The aviation connector for a distribution network detector as described in claim 1, characterized in that: The base unit (200) also includes a wiring assembly (220), which includes a wire channel (211) formed on the chassis (210) and a protective sleeve (221) fixed to the lower surface of the chassis (210).

7. The aviation connector for a distribution network detector as described in claim 1, characterized in that: The plug assembly (310) also includes a limiting piece (312) fixed to the outer wall of the plug (311); when the outer shell unit (100) is locked, the limiting piece (312) and the chassis (210) together clamp and fix the plug unit (300) and the base unit (200).

8. The aviation connector for a distribution network detector as described in any one of claims 1 to 7, characterized in that: The insertion hole (311a) and the connecting hole (311b) are coaxially arranged and have the same inner diameter.

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