CN201887742U - Coupler - Google Patents
Coupler Download PDFInfo
- Publication number
- CN201887742U CN201887742U CN2010206192619U CN201020619261U CN201887742U CN 201887742 U CN201887742 U CN 201887742U CN 2010206192619 U CN2010206192619 U CN 2010206192619U CN 201020619261 U CN201020619261 U CN 201020619261U CN 201887742 U CN201887742 U CN 201887742U
- Authority
- CN
- China
- Prior art keywords
- metal shell
- coupler
- cable
- circuit board
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a coupler which comprises a metal shell, a metal cover plate covered above the metal shell, a circuit block contained in the metal shell and a cable component connected with the circuit block, wherein the metal shell is provided with a sealing terminal made of insulation material, and a sealing containing cavity for containing the circuit block is formed by the metal shell and the metal cover plate and internally filled with inert gas. The coupler has the beneficial effects that as the coupler is sealed by the metal shell, the reliability is higher, the storage period is longer and the high frequency waveform parameter is more excellent.
Description
[technical field]
The utility model relates to a kind of coupler, and it relates to a kind of coupler with metal shell.
[background technology]
The MIL_STD_1553B bus standard is one of basis of the integrated and standardized management of U.S. Department of Defense's armament systems, be widely used in airplane synthetic avionics system, plug-in property management reason and integrated system, and progressively expand to fields such as flight system such as control and tank, naval vessel, space flight, it is used for airplane avionics system by USAF at first, be widely used in the US and European sea, land and sky army at present, and become a kind of international standard.The manufacturing process of 1553B bus device has satisfied variations in temperature and army's target requirement on a large scale.And be widely used in the middle of the project of severe rugged environment.This bus system is made up of bus, isolating transformer, terminal (receiver or reflector), isolation resistance, coupler (according to usable condition).Coupler is a key component.Wherein, as long as use the MIL-STD-1553B bus that supporting with it coupler of using as signal transmission, isolation, impedance matching that meets its standard will be arranged.And common 1553B bus is the form of metal shell, epoxy glue perfusion sealing with the packing forms of coupler, though this packing forms can satisfy the Military Standards requirement, but because employing all is organic material, its storage cycle is shorter, can not satisfy 30 years storage cycles of present military project and the aerospace requirement, and owing to the epoxy glue and the bakelite shell of perfusion can produce the drift that mechanical stress causes electrical quantity to inner isolating transformer and isolation resistance when the variations in temperature, and the form of described metal shell, epoxy glue perfusion sealing also can influence the high frequency waveforms parameter.
In view of the above problems, be necessary to provide a kind of coupler to solve above-mentioned deficiency.
[utility model content]
The technical problem that the utility model solved be to provide a kind of reliability is higher, storage cycle is longer, the better novel coupler of waveform parameter.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of coupler, comprise metal shell, be placed on described metal shell top metal cover board, be contained in the circuit chunk in the described metal shell and connect the cable-assembly of described circuit chunk, described metal shell is provided with the hermetic terminal of being made by the insulation material, described metal shell and described metal cover board formation one are used to accommodate the sealing host cavity of described circuit bank piece, are filled with inert gas in the sealing host cavity.
As the further improvement of the technical program, described cable-assembly comprises cable and is coated on screen on the described cable that described screen is provided with a tight loop.
As the further improvement of the technical program, an end of described cable electrically conducts by the circuit board that draws in pin and the described sealing host cavity, and described hermetic terminal adopts the described pin that draws of glass elevated-temperature seal.
As the further improvement of the technical program, described circuit chunk comprises a circuit board, is positioned at isolating transformer, isolation resistance on the described circuit board, and described circuit board is provided with the plurality of fixed hole and draws the electrical pickoff that pin is connected with described.
Compared to prior art, coupler described in the utility model carries out air-tight packaging by metal shell and inserts the mode of inert gas within it, makes coupler have higher reliability and better waveform performance.
[description of drawings]
Fig. 1 is the internal structure schematic diagram of coupler described in the utility model.
Fig. 2 is the structural representation of the interior oneway circuit chunk of coupler described in the utility model.
[embodiment]
See also Fig. 1 to shown in Figure 2, the utility model provides a kind of coupler 100, it has novel packing forms, higher reliability, has more premium properties, and meet military project three anti-requirements, this coupler 100 not only satisfies the standard of MIL-STD-1553B bus, also utilizing air-tightness metal shell 6 to seal, is the key component in the MIL-STD-1553 bus system.
See also shown in Figure 1, described coupler 100 plays Fault Isolation and impedance matching in bus system, it comprises cable 1, be coated on the screen 2 on described cable 1 surface, be sheathed on the circular metal tight loop 3 on the described screen 2, draw pin 4 by what draw in the cable 1, by the hermetic terminal 5 made of insulation material, the metal shell 6 that roughly is square, be placed on the metal cover board 7 of described metal shell 6 tops, be positioned at the circuit board 8 of described metal shell 6, be located at the isolating transformer 9 on the described circuit board 8, isolation resistance 10, inert gas 11, the securing member 13 of shell stiff end 12 and fixing described circuit board 8.Described metal shell 6 and the described metal cover board 7 common host cavities that form a sealing are used to accommodate described circuit board 8.
Described metal shell 6 is to accommodate by described circuit board plate 8 by the air-tight packaging mode; isolating transformer 9; the circuit chunk that isolation resistance 10 is formed; in order to make the internal and external pressure balance of metal shell 6; simultaneously also for described circuit chunk being insulated and three anti-protections; also be added with inert gas 11 in the described metal shell 6; because having adopted inert gas 11 in the described coupler 100 fills; make coupler 100 have better high frequency characteristics, all are not more than the rise time of the waveform under requiring according to the MIL-STD-1553B bus standard and fall time 85ns.
See also shown in Figure 2, circuit board 8 in the described circuit chunk is provided with plurality of fixed hole 14 and electrical pickoff 15, described fixing hole 14 is used for fixing described securing member 13, wherein, this circuit chunk can have the N road, and isolating transformer 9 of each route and the isolation resistance 10 that equates with two resistances of isolating transformer 9 elementary serial connections are formed.Described electrical pickoff 15 is connected to described drawing on the pin 4 through conductor cable, and the described pin 4 that draws is fixed by described hermetic terminal 5 elevated-temperature seals, and extends shell and be welded to connect with cable 1, and this cable 1 is the twisted-pair feeder of 1MHz 75 Ω.The screen 2 of described cable 1 clamps welding by metal tight loop 3 and metal shell 6, after then metal shell 6 inside being evacuated, injects a certain amount of described inert gas 11; Adopt parallel seam welding to connect then a metal cover board 7 that is positioned at described metal shell 6 tops is carried out airtight sealing by fusing with described metal shell 6.Wherein, described hermetic terminal 5 adopts the glass elevated-temperature seal, and is arranged at the side of described metal shell 6, with the fixing described pin 4 that draws.
1. coupler 100 is because adopt seldom organic material, therefore compares with coupler of the prior art to have the higher storage time.
2. coupler 100 is owing to adopt air-tightness metal shell 6 packing forms, make and have higher environment property on probation, compare with coupler of the prior art and to have higher anti-mechanical stress, the ability of temperature stress, simultaneously, also reduced influence the high frequency waveforms parameter.
3. coupler 100 inner casings are compared existing coupler of filling epoxy glue or silica gel owing to fill inert gas 11, and its weight reduces greatly.
The above only is a most preferred embodiment of the present utility model, is not the utility model is done any pro forma restriction.Any those of ordinary skill in the art are not breaking away under the technical solutions of the utility model scope situation, utilize the method content of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, all belong to the scope of claims protection.
Claims (4)
1. coupler, comprise metal shell, be placed on described metal shell top metal cover board, be contained in the circuit chunk in the described metal shell and connect the cable-assembly of described circuit chunk, it is characterized in that: described metal shell is provided with the hermetic terminal of being made by the insulation material, described metal shell and described metal cover board formation one are used to accommodate the sealing host cavity of described circuit bank piece, are filled with inert gas in the sealing host cavity.
2. coupler according to claim 1 is characterized in that: described cable-assembly comprises cable and is coated on screen on the described cable that described screen is provided with a tight loop.
3. coupler according to claim 2 is characterized in that: an end of described cable electrically conducts by the circuit board that draws in pin and the described sealing host cavity, and described hermetic terminal adopts the described pin that draws of glass elevated-temperature seal.
4. coupler according to claim 3 is characterized in that: described circuit chunk comprises a circuit board, is positioned at isolating transformer, isolation resistance on the described circuit board, and described circuit board is provided with the plurality of fixed hole and draws the electrical pickoff that pin is connected with described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206192619U CN201887742U (en) | 2010-11-23 | 2010-11-23 | Coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206192619U CN201887742U (en) | 2010-11-23 | 2010-11-23 | Coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201887742U true CN201887742U (en) | 2011-06-29 |
Family
ID=44185284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206192619U Expired - Lifetime CN201887742U (en) | 2010-11-23 | 2010-11-23 | Coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201887742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769585A (en) * | 2012-08-02 | 2012-11-07 | 贵州航天电器股份有限公司 | Direct-insertion bus coupler |
-
2010
- 2010-11-23 CN CN2010206192619U patent/CN201887742U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769585A (en) * | 2012-08-02 | 2012-11-07 | 贵州航天电器股份有限公司 | Direct-insertion bus coupler |
| CN102769585B (en) * | 2012-08-02 | 2014-12-10 | 贵州航天电器股份有限公司 | Direct-insertion bus coupler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
|
| CX01 | Expiry of patent term |