CN212659752U - Protective shell assembly for electric connector in corrosion atmosphere test - Google Patents

Abstract

The utility model provides a protective shell component of an electric connector used in a corrosive atmosphere test, which comprises a main shell, an upper cover plate, a rear cover, a front cover and a wiring board arranged in the main shell; the main casing body comprises a side wall and a bottom wall, and mounting clamping grooves for mounting a wiring board and a slot for mounting a front cover are formed in the inner surfaces of the side wall and the bottom wall. The wiring board is provided with a prefabricated hole, a wiring terminal is inserted into the prefabricated hole, the wiring terminal comprises a column body positioned outside and a U-shaped table positioned inside, and the U-shaped table is connected with a lead of the electric connector to be tested and the wiring terminal; the external post is inserted into a preformed hole of the wiring board. The utility model discloses a for electric connector afterbody annex provides sealed safeguard function, for the electric connector wiring provides the protective housing subassembly of the assembled of switching function in corrosive atmosphere is experimental to carry out accurate test to electric connector electrical property parameter under the wire corruption, afterbody annex corruption circumstances of not introducing.

Description

Protective shell assembly for electric connector in corrosion atmosphere test

Technical Field

The utility model relates to a protector, concretely relates to a protecting crust subassembly that is arranged in electric connector of corrosive atmosphere test.

Background

In the development and production processes, the electrical connector needs to be subjected to a corrosion atmosphere test to expose weak links, guide material selection and design improvement, or evaluate and verify whether the electrical connector meets the requirements of relevant standards and product documents.

The corrosive atmosphere test specifically comprises a salt spray test, a damp-heat test, an acidic atmosphere test and other laboratory tests and an external field exposure test. Taking an electric connector widely used in current aviation electromechanical products as an example, in actual use, both a plug end and a jack end of the electric connector need to be provided with tail accessories for fixing cables; in the corrosion atmosphere test, if the contact resistance of the electrical connector at each stage of the test is to be monitored, the two ends of the electrical connector need to be connected, and if the cable and the tail accessory are directly exposed in the corrosion atmosphere, corrosion may occur to affect the contact resistance test result.

Therefore, it is desirable to design a tail accessory protection and connection device for an electrical connector to optimize the test results of the connector in corrosive atmosphere and improve the working efficiency.

SUMMERY OF THE UTILITY MODEL

To above demand, the utility model provides a can assembled protecting crust subassembly for electric connector afterbody annex provides sealed safeguard function, provides switching function for the electric connector wiring in corrosive atmosphere is experimental to test electric connector electrical property parameter under the circumstances that does not introduce wire corruption, afterbody annex corruption, improve the accuracy of parameter measurement.

The utility model provides a protective shell component of an electric connector used in a corrosive atmosphere test, which comprises a main shell, an upper cover plate, a rear cover, a front cover and a wiring board arranged in the main shell; the main shell comprises a side wall and a bottom wall, wherein the inner surfaces of the side wall and the bottom wall are provided with a mounting clamping groove and a slot, the mounting clamping groove is arranged at a position close to the rear cover and used for mounting the wiring board, and the slot is used for mounting the front cover; the upper surface of the main shell and the rear end surface of the side wall are both provided with connecting lugs extending outwards; the upper cover plate comprises lugs, mounting clamping grooves for mounting a wiring board and a slot for mounting a front cover, wherein the lugs, the mounting clamping grooves and the slot are respectively positioned on the inner surface, and the outer periphery of the upper cover plate is the same as the outer periphery of the main shell in size; the wiring board is provided with a prefabricated hole, a wiring terminal is inserted into the prefabricated hole, the wiring terminal comprises a column body positioned outside and a U-shaped table positioned inside, and the U-shaped table is used for connecting a lead of an electric connector serving as a piece to be tested with the wiring terminal in a screw compression joint mode; the external column is inserted into the prefabricated hole of the wiring board to realize the functions of an extension joint and a fixed wiring terminal; the front cover comprises an upper half part, a lower half part and a middle hole positioned in the middle part; and the back cover includes a back cover plate and a pair of lateral lugs extending outwardly along a plane of the back cover plate and a pair of inner lugs extending inwardly perpendicular to the plane of the back cover plate.

Preferably, said lateral lugs cooperate with said attachment lugs on the side walls of said main housing, said lateral lugs cooperating with said attachment lugs on said upper cover plate and said bottom wall, respectively.

Preferably, the upper half and the lower half of the front cover can be clamped with the connector tail, and the front cover is inserted into the slot of the main shell to enable the connector plug end to be outside the main shell.

Preferably, a sealant layer is disposed at a joint between the terminal post and the wiring board.

Preferably, the pre-fabricated holes of the patch panel comprise a plurality of pre-fabricated holes.

It is preferable that the central hole of the front cover has different hole size and shape.

Furthermore, the connection parts of the main shell, the upper cover plate, the rear cover, the front cover and the wiring board are all provided with sealing ring slots and are provided with sealing rubber rings matched with the sealing rubber slots.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a protecting crust subassembly for electric connector among corrosive atmosphere test, this protecting crust subassembly include sealed safeguard function and electrical property test switching function to electric connector afterbody annex, through the integrated configuration of casing part, realize the dismantlement and the installation of local part to avoid dismantling whole device, improve the accuracy to the parameter that obtains in the electric connector test process.

Drawings

Fig. 1 is a schematic view of the whole structure of the protective shell assembly of the present invention;

FIG. 2 is a schematic structural diagram of an upper cover plate of a shield shell assembly of the electrical connector used in a corrosive atmosphere test according to the present invention;

fig. 3 is a schematic structural diagram of the main housing of the protective housing assembly of the present invention;

FIG. 4 is a schematic structural view of a rear cover of the protective shell assembly of the present invention;

fig. 5 is a schematic structural view of a wiring board of the protective case assembly of the present invention;

FIG. 6 is a schematic structural view of a front cover of the protective shell assembly of the present invention; and

fig. 7 is a schematic structural diagram of a terminal of the protective case assembly of the present invention.

Detailed Description

Exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. Although various aspects of the embodiments are illustrated in the drawings, which may refer to functionally identical or similar elements, the drawings are not necessarily drawn to scale unless specifically indicated.

The utility model discloses a protecting crust subassembly for electric connector among corrosive atmosphere test, set up at the inside wiring board 5 of protecting crust subassembly including upper cover plate 1, the main casing body 2 and back lid 3, protecgulum 4.

Fig. 1-7 illustrate the components of the shield shell assembly. The base material of the protective shell components is made of corrosion-resistant plastics such as polypropylene, the bolt and the nut used as the connecting piece can be made of corrosion-resistant high-temperature alloy, the movable contact parts between all the protective shell components are provided with sealing ring grooves, corrosion-resistant sealing rubber rings matched with the sealing ring grooves are preassembled, and all the joint parts are sealed again by using removable silicon rubber after the installation is finished.

As shown in fig. 3, the main housing 2 has a recessed configuration for receiving electrical connector terminals, tail fittings, and providing extension contacts for the electrical connector terminals. The main casing 2 includes a side wall 21 and a bottom wall 22, and mounting notches 23 are provided on inner surfaces of the side wall 21 and the bottom wall 22, the mounting notches 23 being provided near the rear cover 3 and used for mounting the wiring board 5. Also provided on the inner surfaces of the side walls 21 and the bottom wall 22 are slots 29 for mounting the front cover 4. Connecting lugs 24 extending outwards are arranged on the upper surface of the main shell 2 and the rear end surface of the side wall, correspondingly, connecting lugs 24 are arranged on corresponding positions on the upper cover plate 1, the rear cover 3 and the front cover 4, and the connection and installation of the protective shell component are realized by bolts penetrating through the connecting lugs 24 matched in pairs.

As shown in fig. 2, the upper cover 1 is a cover of the main housing 2, and is also provided with an upper cover slot 123 for mounting the wiring board 5 and an upper cover slot 124 for mounting the front cover 4 on the inner surface. In use, the upper cover plate 1 is secured to the main housing 2 by bolts through the attachment lugs 24 for sealing the interior space. The outer periphery of the upper cover plate 1 is the same size as the outer periphery of the main casing 2, so that the lower main casing 2 can be completely covered, and the upper surface of the whole protective casing assembly is ensured to have no gap, so that liquid is prevented from flowing into the inside of the casing when the upper cover plate 1 is opened due to sealing failure or test completion.

The internal baffle of the main housing 2 is a terminal block 5 which, in use, is inserted into a mounting slot 23 in the main housing 2 adjacent the rear cover 3, as shown in figure 5. The patch panel 5 is provided with pre-formed holes 26 for mounting posts 27 extending outwardly for electrical connector wiring for electrical performance testing. The pre-formed holes 26 in the terminal block are self-numbering while ensuring hermeticity and insulation between the terminals, i.e. the terminal block 5 comprises a plurality of pre-formed holes 26, different numbers of pre-formed holes 26 to match connectors of different numbers of terminals.

The design of the post 27 is shown in fig. 7. the post 27 includes a post 28 on the outside and a U-shaped platform 39 on the inside. The U-shaped table 39 connects the lead wire of the electric connector with the binding post 27 by adopting a screw compression joint mode; the external posts 28 are inserted into the preformed holes 26 of the terminal block 5 and function as extension tabs and fixed terminals. The binding post 27 is made of copper alloy with gold-plated surface, and a layer of sealant layer is arranged at the joint of the binding post and the wiring board to realize sealing. In a preferred embodiment, the connection portions of the main housing 2, the upper cover plate 1, the rear cover 3, the front cover 4 and the wiring board 27 are provided with sealing ring grooves and fitted with sealing rubber rings, and the outer joint portions are sealed again by using silicon rubber.

Front cover 4 as shown in fig. 6, the front cover 4 includes an upper half 40, a lower half 41, and a middle hole 42 in the middle for securing and sealing the connector plug or receptacle end. In use, the front cover 4 is inserted into the slot 29 on the right side of the main housing. The central opening 42 of the front cover has different sized apertures which can be sized to match the parameters associated with the selected connector.

Rear cover 3 as shown in fig. 4, the rear cover 3 includes a rear cover plate 31, and a pair of lateral lugs 32 extending outwardly along the plane of the rear cover plate 31 and a pair of inner lugs 33 extending inwardly perpendicular to the plane of the rear cover plate 31, the outwardly extending lateral lugs 32 engaging with the attachment lugs 24 on the side walls 21 of the main housing 2, and the pair of inwardly extending pairs of lugs 33 engaging with the attachment lugs 24 on the upper cover plate and the bottom wall 22, respectively. Also, to facilitate the sealing assembly, an inner lug 33 is provided at a portion recessed inward of the edge of the rear cover. The rear cover 3 is installed after the upper cover plate 1 is installed, and is fixed to the left side of the main casing 2 with bolts to provide sealing between the main casing 2 and the terminal block 5. The electrical performance of the electrical connector can be tested by a terminal connection test instrument on the terminal block after the rear cover 3 is opened, and the connector does not need to be detached from the protective shell assembly.

Fig. 1 shows an assembly view of the shield case assembly in which the upper cover plate 1, the main casing 2, the rear cover 3 and the front cover 4 are assembled in this order.

The following describes the method of using the protective shell assembly of the present invention with an electrical connector as an example.

In the test, in the utility model discloses a in a protective housing subassembly for electric connector among corrosive atmosphere test, the electric connector as the part that awaits measuring includes plug end and jack end, and the afterbody annex of electric connector indicates plug end to wire end portion to and jack end to wire end portion. When salt spray, damp and hot tests are carried out, corrosion resistance and the like of two ends of the plug and the jack are mainly considered, and certain protection measures need to be taken for tail accessory parts. The utility model discloses a use method as follows:

the connector is in an insertion state or a separation state during testing, and two ends of the connector are inserted or separated.

Before the protective shell assembly is installed, two ends of the electric connector are assembled and the contact resistance R of the corresponding circuit is tested₁. Testing contact resistance R of corresponding circuit after connecting corresponding binding posts at two ends₂The resistance R of the two terminals₃Is R₂And R₁The difference between them.

When protecting the plug end of the connector, the wiring of the tail part of the plug end is respectively pressed on the corresponding wiring posts 27 through bolts, the upper half part 40 and the lower half part 41 of the front cover 4 are used for clamping the tail part of the connector, and the front cover 4 is inserted into the notch 24 of the main shell 2, so that the plug end of the connector is positioned outside the main shell 2; inserting the wiring board 5 into the mounting slot 23 of the main housing 2, and placing the plug terminal tail attachment in the main housing 2; respectively covering the upper cover plate 1 and the rear cover 3 and screwing down screws; a sealing layer is formed using silicone rubber at all locations where contact gaps may exist.

When the second protective shell component is used for protecting the jack end of the connector, repeating the steps; the two shielding shell assemblies were placed on the sample holder and the test was started. If the electrical property test is needed, the test can be started by opening the rear cover 3 and passing through the corresponding binding post, and the measured contact resistance value minus R₃I.e. the contact resistance of the corresponding line.

The utility model discloses a protective housing subassembly for electric connector has following advantage among the corrosive atmosphere test:

the tail accessory of the electric connector is protected by adopting a sealed structure, the plug end and the jack end of the connector are effectively tested, and the influence of lead corrosion and tail accessory corrosion on the electrical performance parameters of the connector is not introduced;

a detachable front cover 4 is adopted, and connectors of different types are matched through a plurality of different hole diameter central holes 42 of the front cover 4;

with the use of a removable patch panel 5, the number of pre-formed holes 26 in the patch panel 5 can be designed to match connectors of different patch numbers, and the patch connectors can be replaced after corrosion;

adopt lid 3 behind the detachable, reach the purpose of accomplishing the test under the condition of not dismantling whole device, improve work efficiency.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims (7)

1. A protective shell component for an electric connector in a corrosive atmosphere test is characterized by comprising a main shell, an upper cover plate, a rear cover, a front cover and a wiring board arranged in the main shell;

the main shell comprises a side wall and a bottom wall, wherein the inner surfaces of the side wall and the bottom wall are provided with a mounting clamping groove and a slot, the mounting clamping groove is arranged at a position close to the rear cover and used for mounting the wiring board, and the slot is used for mounting the front cover; the upper surface of the main shell and the rear end surface of the side wall are both provided with connecting lugs extending outwards;

the upper cover plate comprises lugs, mounting clamping grooves for mounting a wiring board and a slot for mounting a front cover, wherein the lugs, the mounting clamping grooves and the slot are respectively positioned on the inner surface, and the outer periphery of the upper cover plate is the same as the outer periphery of the main shell in size;

the wiring board is provided with a prefabricated hole, a wiring terminal is inserted into the prefabricated hole, the wiring terminal comprises a column body positioned outside and a U-shaped table positioned inside, and the U-shaped table is used for connecting a lead of an electric connector serving as a piece to be tested with the wiring terminal in a screw compression joint mode; the external column is inserted into the prefabricated hole of the wiring board to realize the functions of an extension joint and a fixed wiring terminal;

the front cover comprises an upper half part, a lower half part and a middle hole positioned in the middle part; and

the back cover includes a back cover plate and a pair of lateral lugs extending outwardly along a plane of the back cover plate and a pair of inner lugs extending inwardly perpendicular to the plane of the back cover plate.

2. The shield shell assembly for an electrical connector used in a corrosive atmosphere test according to claim 1, wherein said lateral lugs are engaged with said connecting lugs on the side walls of said main housing, and said lateral lugs are engaged with said connecting lugs on said upper cover plate and said bottom wall, respectively.

3. The shield shell assembly for an electrical connector used in a corrosive atmosphere test according to claim 2, wherein the upper half part and the lower half part of the front cover can be clamped with the connector tail part, and the front cover is inserted into the slot of the main housing so that the connector plug end is positioned outside the main housing.

4. The protective shell assembly for the electrical connector used in the corrosive atmosphere test according to claim 1, wherein a sealant layer is arranged at the joint of the wiring terminal and the wiring board.

5. The shield shell assembly for an electrical connector used in a corrosive atmosphere test of claim 4, wherein said pre-fabricated holes of said wiring board comprise a plurality of pre-fabricated holes.

6. The shield shell assembly for an electrical connector used in a corrosive atmosphere test of claim 1, wherein the central holes of the front cover have different hole sizes and shapes.

7. The protective shell component for the electric connector in the corrosive atmosphere test according to claim 1, wherein the connection parts of the main shell, the upper cover plate, the rear cover, the front cover and the wiring board are all provided with sealing ring grooves and are provided with sealing rubber rings matched with the sealing ring grooves.

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