CN115313097A - Suspended object floating lightning protection filtering component - Google Patents

Abstract

The invention relates to a suspended object floating lightning protection filter assembly, which comprises an outer shell with an open front end and an input connector which is in floating assembly in the outer shell, wherein the input connector comprises an inner shell, an insulator and a contact element; the shell body is also internally provided with an upper-layer printed board and a lower-layer printed board which are connected in a floating mode through a flexible board, wherein the upper-layer printed board is welded with pins at the tail part of at least part of contact elements of the input connector and can float along with the input connector relative to the shell body, and the lower-layer printed board is fixed in the shell body and is distributed with a plurality of lightning protection filtering components. The invention adopts an integrated structure form, integrates the lightning protection circuit board and the suspension socket to form a component, and realizes the functions of data interconnection transmission and lightning protection filtering.

Description

Suspension floating lightning protection filter components

technical field

The invention belongs to the technical field of connectors, and in particular relates to a suspended object floating lightning protection filter assembly.

Background technique

According to GJB1188A "Interface Requirements for Aircraft/Suspended Object Electrical Connection System", the suspended object socket adopts a standard connector interface, and the standard signal group and serial digital data interface transmitted by it are used to stimulate, control and manage various suspended objects.

Suspended object sockets are used to realize data interconnection and transmission. Most of the existing suspended object sockets need to be used in conjunction with lightning protection products to achieve lightning protection purposes. Existing lightning protection products generally integrate and fix the lightning protection circuit on the circuit board, and must have good grounding measures. When the hanging object socket is used in conjunction with lightning protection products, the two need to be assembled to achieve a reliable connection, but the secondary assembly is not only troublesome to operate, but also takes up a lot of space, which is not conducive to use.

Contents of the invention

In order to solve the above problems, the present invention provides a suspended object floating lightning protection filter assembly with a new structure, which integrates the suspended object socket and the lightning protection assembly and meets the floating requirements.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. According to the present invention, a suspension floating lightning protection filter assembly includes an outer shell with an open front end and an input connector floatingly assembled in the outer shell. The input connector includes an inner shell, an insulator and a contact piece; There is also an upper printed board and a lower printed board that are floatingly connected by a flexible board, wherein the upper printed board is welded with at least part of the tail of the contact piece of the input connector, which can float relative to the outer shell with the input connector, and the lower printed board The board is fixed in the casing and several lightning protection filter components are distributed on it.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the floating lightning protection filter assembly of the aforementioned suspension, the contacts include signal contacts, power contacts and radio frequency contacts, wherein the tail pins of the signal contacts are soldered to the upper printed board, and the tails of the power contacts are connected to the lower layer through wires. The printed board is connected, and the length of the wire meets the floating requirements of the power contact in the housing.

In the aforementioned suspension floating lightning protection filter assembly, the upper printed board and the lower printed board are distributed at intervals along the axial direction of the outer casing, and the flexible board can provide elastic force for the upper printed board to stay away from the lower printed board.

In the floating lightning protection filter assembly for suspended objects, a radio frequency lightning protection module is fixed outside the outer casing, and the radio frequency contact is connected to the radio frequency lightning protection module through a radio frequency cable, and the radio frequency cable does not affect the floating of the radio frequency contact. ; The output connector fixed on the outer shell is connected with the lower printed board to realize the signal output.

In the floating lightning protection filter assembly of the suspended object, a compression elastic member is provided between the inner casing and the outer casing to provide power for the inner casing to move axially forward relative to the outer casing; between the inner casing and the outer casing There is also a limit cylinder to prevent the inner shell from detaching from the front end of the outer shell.

In the above-mentioned suspended object floating lightning protection filter assembly, the limit cylinder is fixed on the inner casing and through the cooperation of the guide slope at the upper end and the slope at the lower end of the inner boss on the outer casing, the guiding and axial direction during radial floating are realized Front float limit.

As for the floating lightning protection filter assembly of the suspended object, the inner casing also realizes axially backward floating through the cooperation of the outer boss on the inner casing with the upper end surface of the inner boss on the outer casing.

In the aforementioned suspension floating lightning protection filter assembly, a sealing sleeve is also provided between the inner casing and the outer casing, and the sealing sleeve is closely attached to the outer periphery of the inner casing and is realized by at least one sealing convex hull raised in the circumferential direction. Floating seal with outer housing.

In the aforementioned suspension floating lightning protection filter assembly, the upper edge of the sealing sleeve is turned outward to form an everted edge that can at least partially cover the upper end surface of the outer shell, and the everted edge is always kept in contact with the outer shell during the floating stroke of the inner shell. The sealing of the upper end surface of the body; the lower end of the sealing sleeve is fixed in the sealing groove on the outer periphery of the inner casing by fasteners.

As for the floating lightning protection filter assembly of the suspended object, the lower end of the valgus is provided with a ring-shaped rib, and the ring-shaped rib is fixed in a ring groove on the upper end surface of the outer casing.

In the above-mentioned suspension floating lightning protection filter assembly, the lower surface of the eversion edge and the upper end surface of the outer casing are slopes that gradually descend from the inside to the outside.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. By means of the above-mentioned technical solution, the present invention can achieve considerable technical progress and practicality, and has wide industrial application value, and it has at least the following advantages:

The invention adopts an integrated structure form, integrates the lightning protection circuit board and the hanging object socket to form an assembly, and realizes the interconnection transmission of data and the lightning protection filtering function.

The present invention adopts the form of rigid-flexible-rigid printed board to realize floating, the first layer of printed board is welded to the socket of the hanging object, the floating is realized through the flexible board and the signal is transmitted to the second layer of printed board, and the lightning protection filter circuit is welded to the second layer of printed board. The two-layer printed board is grounded through the component case.

The input end of the lightning protection filter component of the present invention is a hanging object plug, the output end is a curved connector and a radio frequency lightning protection module, the signal hole of the input end is connected through a printed board and connected to the lightning protection printed board through a flexible board, and the power supply hole The position is connected to the lightning protection printed board through a wire, and output through a bent connector; the radio frequency hole is connected to the radio frequency lightning protection module through an interconnection radio frequency line. The product not only satisfies the normal transmission of power supply and signal, but also has the function of transient induction lightning protection.

Description of drawings

Fig. 1 is the front view of the suspended object floating lightning protection filter assembly of the present invention;

Fig. 2 is a top view of the suspended object floating lightning protection filter assembly of the present invention;

Fig. 3 is a cross-sectional view of the suspended object floating lightning protection filter assembly of the present invention;

Fig. 4 is another cross-sectional view of the suspended object floating lightning protection filter assembly of the present invention;

Fig. 5 is a schematic diagram of the lightning protection circuit of the 1553B contact of the present invention.

[Description of main component symbols]

1: Outer shell

2: Inner shell

3: Upper PCB

4: Lower PCB

5: Adagio

6: Lightning protection filter device

7: Output connector

8: Compression elastic

9: sealing groove

10: Fasteners

11: Lower step surface

12: Upper step surface

13: Seal bump

14: Limit cylinder

15: RF cable

16: inner boss

17: Outer boss

18: guide slope

19: sealing sleeve

20: RF wire

21: RF lightning protection module

Detailed ways

In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, the specific implementation, structure and characteristics of the suspended object floating lightning protection filter assembly proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. And its effect, detailed description is as follows.

Please refer to Fig. 1 and Fig. 2, which are structural schematic diagrams of various parts of the suspended object floating lightning protection filter assembly of the present invention. 1, the output connector 7 fixedly assembled on the outer shell 1, and the radio frequency lightning protection module 21 fixedly assembled outside the outer shell 1. The input connector 101 can float axially and radially within the outer casing 1 with a sufficient floating distance between them.

The input connector 101 , the upper printed board 3 and the lower printed board 4 are distributed axially from front to back in the outer shell 1 , wherein the input connector 101 can be axially and radially arranged in the outer shell 1 . float to enhance the tolerance capability of the component. The input connector 101 includes an inner housing 2 , an insulator is fixed in the inner housing 2 , contacts are fixed in the insulator, and tails of at least part of the contacts are welded and fixed to the upper printed board 3 . As a result, the upper printed board 3 can also float axially and radially relative to the outer casing 1 driven by the input connector 101 . In the embodiment of the present invention, the upper printed board 3 and the inner housing 2 are fixed by screws to ensure the synchronous movement between the two and prevent the tail of the contact from being damaged due to force.

The lower printed board 4 is fixed on the outer casing 1, and a number of lightning protection filter devices 6 are distributed thereon. The upper printed board 3 is in floating connection with the lower printed board 4 through the flexible board 5 , and the flexible board 5 can provide elastic force for the upper printed board 3 to stay away from the lower printed board 4 . The flexible board 5 is arc-shaped, and the two ends of the arc are respectively fixed to the sides of the upper printed board 3 and the lower printed board 4, which can meet the axial and radial floating requirements between the two printed boards . Preferably, the flexible board 5 is C-shaped, and the outer housing 1 has a space for the flexible board 5 to float axially and radially with the upper printed board 3 and the inner housing 2 .

In the embodiment of the present invention, the contacts in the inner housing 2 include signal contacts, power contacts and radio frequency contacts, wherein the signal contacts are welded with the upper printed board 3 through tail pins to form electrical interconnection The purpose of lightning protection is realized by connecting the upper printed board 3 , the flexible board 5 and the lower printed board 4 with the lightning protection filter device 6 . The power contacts are connected to the lower printed board 4 through wires, so as to realize the connection with the lightning protection filter device 6, and the length of the wires can meet the floating requirements of the power contacts with the inner casing 2 relative to the lower printed board 4 . The radio frequency contact is connected to the radio frequency lightning protection module 21 fixed outside the outer shell 1 through a radio frequency cable 15, and the length of the radio frequency cable 15 meets the requirement that the radio frequency contact floats with the inner shell. In the embodiment of the present invention, the radio frequency cable 15 passes through the upper printed board 3 and the lower printed board 4 in sequence, and then protrudes from the outer lower part of the outer casing 1 to connect with the radio frequency lightning protection module 21 .

In the embodiment of the present invention, the output connector 7 is fixed on the lower side wall of the outer shell 1, and the tail pins of the output connector 7 are fixed on the lower printed board 4, which is used to realize the power supply in the inner shell 1. Output of the signal conveyed by the contacts and signal contacts.

The above-mentioned lightning protection filter device 6 adopts an integrated design, and integrates the lightning protection filter circuit into one module, which can suppress instantaneous lightning effects and spatial coupling inside and outside the device. In the embodiment of the present invention, the signal contact is a 1553B contact, and the lightning protection filter circuit corresponding to the 1553B contact is composed of two parallel circuits connected in series with rectifier diodes and TVS diodes in opposite directions. Since TVS diodes have junction capacitance, using a single TVS for lightning protection will have an impact on signal integrity, while rectifier diodes have the functions of rectifying and reducing capacitance. After being connected in reverse series with TVS diodes, the junction capacitance can be further reduced, and finally By connecting the above two anti-series circuits in parallel again, the junction capacitance is controlled below 100pF to meet the normal transmission of signals.

In the embodiment of the present invention, in the input connector 101 , the inner housing 2 and the insulator are sealed by a sealing ring, and the contacts and the insulator are also sealed by a sealing ring. When the contact element is a multi-layer structure, the different layers can be sealed by glass sintering.

In order to realize the sealing between the inner casing 2 and the outer casing 1, a sealing sleeve 19 is also provided between the upper part of the inner casing 2 and the outer casing 1, and the sealing sleeve 19 is close to the outer periphery of the inner casing 2 and passes through it. The sealing bulge 13 protruding outward in the circumferential direction realizes the seal with the outer shell 1, and the sealing bulge can be squeezed and deformed to meet the gap between the inner shell 2 and the outer shell 1 when the inner shell 2 is radially floating. The sealing requirements between them ensure that the two are always in a sealed state. During the entire floating stroke between the inner shell 2 and the outer shell 1, the sealing protrusion 13 is always located between the inner shell 2 and the outer shell 1 to keep the two sealed.

In the embodiment of the present invention, the upper edge of the sealing sleeve 19 is turned outward to form a turned edge 22 , and the turned edge 22 at least partially covers the upper end surface of the outer casing 1 . Preferably, the lower surface of the everted edge 22 and the upper surface of the outer casing 1 are slopes that gradually descend from the inside to the outside.

In this embodiment, the upper end surface of the outer shell 1 is provided with an annular groove 24 capable of accommodating the annular rib 23 at the lower end of the everted edge 22 , and the annular rib 23 is fixed in the annular groove 24 . The lower end of the sealing sleeve 19 is fixed on the outer peripheral surface of the inner casing 2. When floating occurs between the outer casing 1 and the inner casing 2, the lower end of the sealing sleeve 19 moves with the inner casing 2, and the upper end is fixed on the upper surface of the outer casing 1. On, and through the deformation of the sealing sleeve 19 itself, the relative floating requirements of the upper and lower ends and the sealing requirements between the inner casing 2 and the outer casing 1 are met.

In this embodiment, the sealing sleeve 19 realizes the sealing and fixing between the sealing sleeve 19 through the cooperation of the annular protrusion 25 on its inner periphery and the sealing groove 9 on the outer periphery of the inner casing 2 . Preferably, the annular protrusion 25 of the sealing sleeve 19 is covered with a fastener 10 , through which the fastener 10 can be reliably fixed to the sealing groove 9 on the inner casing 2 .

In order to maintain the stability of the input connector 101, a compression elastic member 8 is provided between the inner housing 2 and the outer housing 1, and the upper end surface of the compression elastic member 8 is pressed against the lower stepped surface 11 of the inner housing 2, The lower end surface is pressed against the upper stepped surface 12 of the outer shell 1, and the compression elastic member 8 provides the inner shell 2 with an axially forward elastic force relative to the outer shell 1. When the input connector 101 is inserted, the inner shell 2 Relative to the outer casing 1, the axis moves backward, compressing the elastic member. In the embodiment of the present invention, the compression elastic member 8 is a corrugated spring, but it is not limited thereto.

In order to keep the compressed elastic member 8 in a compressed state and prevent the input connector 101 from coming out of the outer casing 1, a limiting cylinder 14 is also provided between the inner casing 2 and the outer casing 1, and the limiting cylinder 14 is sleeved on the The lower part of the inner housing 2 is fixedly connected with the inner housing 2, and the limit cylinder 14 realizes the radial floating of the lower part of the inner housing 2 through the cooperation of the guide inclined surface 18 at its upper end and the lower end surface of the inner boss 16 in the outer housing 1. The guide and axial forward floating limit. The mating surface of the inner boss 16 and the guide inclined surface 18 is also an inclined surface, and the two realize the guidance through the mutually fitted inclined surfaces. The setting of the limiting cylinder 14 in the present invention can also prevent the lower part of the inner housing 2 and the upper printed board 3 from being damaged due to excessive radial tilting.

The inner casing 2 of the present invention also realizes the axially backward floating limit through the cooperation of the upper outer boss 17 and the upper end surface of the inner boss 16 on the outer casing, and the outer boss 17 can be opposite to the outer casing When the axial backward floating distance of 1 reaches the maximum, it will stop and cooperate with the upper end surface of the inner boss 16 on the outer shell 1 to prevent it from continuing to float axially backward relative to the outer shell 1 .

In the embodiment of the present invention, the input connector 101 is a hanger socket and the output connector 7 is an angled connector.

In other embodiments of the present invention, the setting of the output connector 7 and the radio frequency lightning protection module 21 can be cancelled, and the output of the signal is realized by directly leading outwards from the lower printed board 4 and the radio frequency contact piece. At this time, the radio frequency signal No lightning protection measures.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes. Technical Essence of the Invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

Claims (11)

1. The utility model provides a suspended object floating lightning protection filter assembly which characterized in that: the input connector comprises an inner shell, an insulator and a contact piece, wherein the front end of the outer shell is opened, and the input connector is in floating fit with the inner shell; still be equipped with upper printing board and lower floor's printing board through the unsteady connection of gentle board in this shell body, wherein upper printing board welds with at least partial contact afterbody stitch of input connector, can float along with the relative shell body of input connector, and lower floor's printing board is fixed in the shell body and on it distributes and has a plurality of lightning protection filtering device.

2. The suspended object floating lightning protection filter assembly according to claim 1, wherein: the contact comprises a signal contact, a power supply contact and a radio frequency contact, wherein a tail stitch of the signal contact is welded on the upper printed board, the tail of the power supply contact is connected with the lower printed board through a wire, and the length of the wire meets the floating requirement of the power supply contact in the outer shell.

3. The suspended object floating lightning protection filter assembly according to claim 2, wherein: the upper printed board and the lower printed board are distributed at intervals along the axial direction of the outer shell, and the flexible board can provide elastic force far away from the lower printed board for the upper printed board.

4. The suspended object floating lightning protection filter assembly according to claim 2, wherein: the radio frequency lightning protection module is fixed on the outer side of the outer shell, the radio frequency contact is connected with the radio frequency lightning protection module through a radio frequency cable, and the radio frequency cable does not influence the floating of the radio frequency contact; and an output connector which is used for being connected with the lower-layer printed board to realize signal output is also fixed on the outer shell.

5. The suspended object floating lightning protection filter assembly according to claim 1 or 4, characterized in that: a compression elastic piece which provides axial forward movement power for the inner shell relative to the outer shell is arranged between the inner shell and the outer shell; a limiting cylinder for preventing the inner shell from being separated from the front end of the outer shell is arranged between the inner shell and the outer shell.

6. The suspended object floating lightning protection filter assembly according to claim 5, wherein: the limiting cylinder is fixed on the inner shell and realizes the guiding during radial floating and the limiting during axial forward floating through the matching of a guiding inclined plane at the upper end of the limiting cylinder and an inclined plane at the lower end of an inner boss on the outer shell.

7. The suspended object floating lightning protection filter assembly according to claim 5, wherein: the inner shell also realizes the axial backward floating through the matching of the outer lug boss on the inner shell and the upper end surface of the inner lug boss on the outer shell.

8. The suspended object floating lightning protection filter assembly according to claim 5, wherein: still be equipped with the seal cover between interior casing and the shell body, this seal cover hugs closely in interior casing periphery and realizes through the floating seal between the shell body with the at least one sealed convex closure of its circumference jack-up.

9. The suspended object floating lightning protection filter assembly according to claim 8, wherein: the upper edge of the sealing sleeve is folded outwards to form an outward turning edge which can at least partially cover the upper end surface of the outer shell, and the outward turning edge is always sealed with the upper end surface of the outer shell in the floating stroke of the inner shell; the lower end of the seal sleeve is fixed in a seal groove at the periphery of the inner shell through a fastener.

10. The suspended object floating lightning protection filter assembly according to claim 9, wherein: the lower end of the outward turning edge is provided with an annular convex rib which is fixed in an annular groove on the upper end surface of the outer shell.

11. The suspended object floating lightning protection filter assembly according to claim 9 or 10, characterized in that: the eversion edge lower surface and the outer shell upper end surface are inclined surfaces which gradually descend from inside to outside.

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