CN105719858A - Error-prevention limitation method for three-position switch of aircraft - Google Patents
Error-prevention limitation method for three-position switch of aircraft Download PDFInfo
- Publication number
- CN105719858A CN105719858A CN201610203708.6A CN201610203708A CN105719858A CN 105719858 A CN105719858 A CN 105719858A CN 201610203708 A CN201610203708 A CN 201610203708A CN 105719858 A CN105719858 A CN 105719858A
- Authority
- CN
- China
- Prior art keywords
- position switch
- pedestal
- switch
- spacing knob
- knob
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
Abstract
The invention relates to an error-prevention limitation method for a three-position switch of an aircraft. A switch limitation structure comprises a limitation knob and a base, wherein a constraint hole is formed at the middle of the limitation knob and is biased towards one side, constraint on a state switching path of the three-position switch is formed due to the position and the shape of the constraint hole, a positioning steel ball of the limitation knob is matched with a round guide rail groove and a ball-socket shaped stop point of the base, the positioning steel ball moves along the guide rail groove on the surface of the base to be stopped at a required stop point by rotating the limitation knob, a state handle only can act in the constraint hole along a constraint direction, and thus, the function of error-prevention limitation is achieved.
Description
Technical field
The invention belongs to Aircraft Electrical System design field, be a kind of mistake proofing limit method preventing from flying hands-operation switch misoperation and cause the three-position switch of system irregular working.
Background technology
Switch refers to that one can make open circuit, makes current interruptions or make its electronic component flowing other circuit.Under diversified demand, derive the switchtype of Various Complex, particularly at Aircraft Electrical System design field.The selection of switch not only to consider the function that switch is achieved, it is also contemplated that the safety of switch, reliability, more should stop the maloperation of switch from the aspect of design.
" work-check " switch that aircraft fire suppression system uses is a kind of three selection switches with neutral position, system requirements this switch under specific circumstances must be switched to " neutrality " state from " state 1--work or inspection " state, it is switched to " state 2---checks or work " state again, and switch and must stop in neutral position a recovery time, the electric energy that the perceptual components and parts of internal system store all is discharged, makes system recovery arrive original state.As directly used this three-position switch, due to maloperation, system can cannot be resetted, thus causing system work disorder, it is impossible to correctly monitor burning things which may cause a fire disaster and implement fire extinguishing, causing economic loss and casualties.
Summary of the invention
It is contemplated that avoid owing to personnel's maloperation causes aircraft fire suppression system work disorder, it is considered to set about from switch itself, design the time delay of a collection and be limited in the mistake proofing limit method of three-position switch integrally.
A kind of mistake proofing limit method of aircraft three-position switch, it is characterised in that: 1) there is a switch position limiting structure, containing limited location knob and pedestal, described spacing knob is a tubular structural member, and one side surface is provided with two symmetrical swing handles；An amesiality constrained port is had in the middle of spacing knob, the state toggle path of three-position switch is defined the constraint in structure by the position of this constrained port and shape, in the front position of constrained port, spacing knob surface has icon to point to the duty of current three-position switch；The opposite side of spacing knob is provided with a cylindrical grooves placing spring and positioning ball；Described pedestal is a rectangular slab, centre is a round hole and the round guide groove coaxial with round hole, orientation, four, the upper and lower, left and right of guide-track groove has a ball-and-socket shape stop point respectively, spacing knob is embedded in the round hole in the middle of pedestal, the round guide groove of the positioning ball of spacing knob and pedestal and ball-and-socket shape stop Point matching；2) switch position limiting structure is fixed by the panel connecting through hole and three-position switch on pedestal, make the state handle of three-position switch constrain in the constrained port of spacing knob；3) rotary spacing knob, makes positioning ball move to the stop point stop of needs under spring force along the guide-track groove of base-plates surface, and the state handle of three-position switch can only action in constrained port, it is achieved mistake proofing limit function.
The beneficial effects of the present invention is, 1) four kinds of duties of stop dot sequency correspondence three-position switch in four orientation, upper and lower, left and right on switch position limiting structure pedestal: state 1, neutrality, state 2, neutrality.The state handle of three-position switch is by the constraint of spacing knob, and when system does not work, three-position switch and spacing knob must all in " neutrality " positions, and three-position switch can not be pulled, it is prevented that incorrect switching；During system electrification work, rotary spacing knob is placed in duty " state 1 " or " state 2 " position, the state handle of three-position switch can only be taken advantage of a situation along the constrained port of spacing knob and be pulled, it is prevented that the more condition selecting caused because of maloperation, improves the reliability of system.2) when three-position switch switches between " state 1 " or " state 2 ", can only first by three-position switch plate to " neutrality " position, then to spacing knob is forwarded " state 2 " or " state 1 " position, realizes the state switching of three-position switch by this flow process.No matter spacing knob rotates clockwise or counterclockwise, and " state 1 " arrives the conversion of " state 2 " must pass through " neutrality " position, meets design requirement.3) interval of three-position switch state switching is much larger than the recovery time of system internal inductance components and parts, and therefore, this switch position limiting structure also meets the three-position switch requirement to time delay.
Below in conjunction with embodiment accompanying drawing, the application is described in further detail:
Accompanying drawing explanation
Fig. 1 is a kind of aircraft three-position switch signal
Fig. 2, Fig. 3 are switch position limiting structure signals
Fig. 4 is the pedestal signal of switch position limiting structure
Fig. 5 is the mistake proofing limit method signal of aircraft three-position switch
Fig. 6 is the spacing state signal of order of switch position limiting structure
Number description: 1 three-position switch, 2 state handles, 3 pedestals, 4 spacing knobs, 5 swing handles, 6 constrained ports, 7 icons, 8 blind holes, 9 springs, 10 steel balls, 11 round holes, 12 guide-track grooves, 13 stop points, 14 light guide plates, 15 connectors
Detailed description of the invention
Referring to accompanying drawing, Fig. 1 is that signal opened by a kind of aircraft three-position switch, the state handle 2 of this three-position switch 1 can have three kinds of states, upwards pulling is the first duty, pulling downwards is the second duty, centre position is the third duty, in order to ensure the safety of aircraft, prevent operator's maloperation to three-position switch, the present invention provides the mistake proofing limit method of a kind of aircraft three-position switch, first there is a switch position limiting structure, containing limited location knob 4 and pedestal 3, described spacing knob 4 is a tubular structural member, one side surface is provided with two symmetrical swing handles 5；An amesiality constrained port 6 is had in the middle of spacing knob, the toggle path of three-position switch state handle 2 is defined the constraint in structure by the position of this constrained port 6 and shape, in the front position of constrained port 6, there is the duty that triangle icon 7 points to current three-position switch on spacing knob surface；The opposite side of spacing knob 4 is provided with a cylindric blind hole 8 placing spring 9 and positioning ball 10；Described pedestal 3 is a rectangular slab, centre is a round hole 11 and the annulus guide-track groove 12 coaxial with round hole 11, a ball-and-socket shape stop point 13 is had respectively in orientation, four, the upper and lower, left and right of annulus guide-track groove 12, spacing knob 4 is embedded in the round hole 11 in the middle of pedestal, and the positioning ball 10 of spacing knob 4 mates with the round guide groove of pedestal and ball-and-socket shape stop point 13.The pedestal 3 of switch position limiting structure is fixed by connector 15 and three-position switch 1, makes the state handle 2 of three-position switch 1 constrain in the constrained port 6 of spacing knob 4.During use, rotary spacing knob 4, make positioning ball 10 move to the stop point stop of needs under the effect of spring 9 along the guide-track groove of base-plates surface, the state handle 2 of three-position switch 1 can only along constraint direction action in constrained port 6, it is achieved mistake proofing limit function.
Four kinds of duties of the stop dot sequency correspondence three-position switch in four orientation, upper and lower, left and right on above-mentioned switch position limiting structure pedestal: the first duty, neutrality, the second duty, neutrality.During " neutrality " of the constrained port correspondence three-position switch of spacing knob, the state handle of three-position switch can not be pulled, during " first duty " or " the second duty " of the constrained port correspondence three-position switch of spacing knob, the state handle of three-position switch can only unidirectional be pulled.
As shown in Figure 6, rotate counterclockwise spacing knob 3, when making the triangle icon before constrained port 6 point up, the state handle of three-position switch can only move to upper plate, makes three-position switch be in the first duty, when the triangle icon before constrained port 6 points to left or right, the state handle of three-position switch can only be " neutrality ", can not be pulled, when the triangle icon before constrained port 6 is downwardly directed, the state handle of three-position switch can only move to lower plate, makes three-position switch be in the second duty.Meanwhile, the interval of three-position switch state switching is much larger than the recovery time of system internal inductance components and parts, and therefore, this switch position limiting structure also meets the designing requirement of time delay.
In addition to convenient operation, enforcement is provided with on the surface of pedestal the light guide plate 14 that can carve characters, as man-machine interaction panel, can different azimuth on light guide plate, carve corresponding duty mark.
The present invention method by increasing switch position limiting structure on three-position switch so that the State Transferring of switch carries out in sequence, it is prevented that the more condition selecting caused because of maloperation, improves the reliability of system.
Claims (5)
1. the mistake proofing limit method of an aircraft three-position switch, it is characterised in that: 1) there is a switch position limiting structure, containing limited location knob and pedestal, described spacing knob is a tubular structural member, and one side surface is provided with two symmetrical swing handles；An amesiality constrained port is had in the middle of spacing knob, the state toggle path of three-position switch is defined the constraint in structure by the position of this constrained port and shape, in the front position of constrained port, spacing knob surface has icon to point to the duty of current three-position switch；The opposite side of spacing knob is provided with a cylindric blind hole placing spring and positioning ball；Described pedestal is a rectangular slab, centre is a round hole and the annulus guide-track groove coaxial with round hole, orientation, four, the upper and lower, left and right of guide-track groove has a ball-and-socket shape stop point respectively, pedestal is additionally provided with connection through hole, spacing knob is embedded in the round hole in the middle of pedestal, the round guide groove of the positioning ball of spacing knob and pedestal and ball-and-socket shape stop Point matching；2) pedestal of switch position limiting structure is fixed by connector and three-position switch, make the state handle of three-position switch constrain in the constrained port of spacing knob；3) rotary spacing knob, makes positioning ball move to the stop point stop of needs under spring force along the guide-track groove of base-plates surface, and the state handle of three-position switch can only along constraint direction action in constrained port, it is achieved mistake proofing limit function.
2. the mistake proofing limit method of three-position switch as claimed in claim 1, it is characterized in that, four kinds of duties of the stop dot sequency correspondence three-position switch in four orientation, upper and lower, left and right on described switch position limiting structure pedestal: the first duty, neutrality, the second duty, neutrality.
3. the mistake proofing limit method of the three-position switch as described in claims 1 or 2, it is characterized in that, during " neutrality " of the constrained port correspondence three-position switch of spacing knob, the state handle of three-position switch can not be pulled, during " first duty " or " the second duty " of the constrained port correspondence three-position switch of spacing knob, the state handle of three-position switch can only unidirectional be pulled.
4. the mistake proofing limit method of three-position switch as claimed in claim 3, it is characterised in that be provided with the light guide plate being to carve characters on the surface of pedestal, as man-machine interaction panel.
5. a mistake proofing position limiting structure for three-position switch, containing limited location knob and pedestal, it is characterised in that described spacing knob is a tubular structural member, and one side surface is provided with two symmetrical swing handles；An amesiality constrained port is had in the middle of spacing knob, the state toggle path of three-position switch is defined the constraint in structure by the position of this constrained port and shape, in the front position of constrained port, spacing knob surface has icon to point to the duty of current three-position switch；The opposite side of spacing knob is provided with a cylindrical grooves placing spring and positioning ball；Described pedestal is a rectangular slab, centre is a round hole and the round guide groove coaxial with round hole, orientation, four, the upper and lower, left and right of guide-track groove has a ball-and-socket shape stop point respectively, pedestal is additionally provided with connection through hole, spacing knob is embedded in the round hole in the middle of pedestal, the round guide groove of the positioning ball of spacing knob and pedestal and ball-and-socket shape stop Point matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610203708.6A CN105719858B (en) | 2016-04-01 | 2016-04-01 | A kind of mistake proofing limit method of aircraft three-position switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610203708.6A CN105719858B (en) | 2016-04-01 | 2016-04-01 | A kind of mistake proofing limit method of aircraft three-position switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105719858A true CN105719858A (en) | 2016-06-29 |
| CN105719858B CN105719858B (en) | 2017-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610203708.6A Active CN105719858B (en) | 2016-04-01 | 2016-04-01 | A kind of mistake proofing limit method of aircraft three-position switch |
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| Country | Link |
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| CN (1) | CN105719858B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539452A (en) * | 1983-12-27 | 1985-09-03 | Brunswick Corporation | Safety stop switch assembly |
| CN204792533U (en) * | 2015-06-25 | 2015-11-18 | 贵州森阳科技有限公司 | Mistake operating means is prevented to three -workers' bit switch |
| CN205508658U (en) * | 2016-04-01 | 2016-08-24 | 中航飞机股份有限公司西安飞机分公司 | Mistake proofing limit structure of three -position switch |
-
2016
- 2016-04-01 CN CN201610203708.6A patent/CN105719858B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539452A (en) * | 1983-12-27 | 1985-09-03 | Brunswick Corporation | Safety stop switch assembly |
| CN204792533U (en) * | 2015-06-25 | 2015-11-18 | 贵州森阳科技有限公司 | Mistake operating means is prevented to three -workers' bit switch |
| CN205508658U (en) * | 2016-04-01 | 2016-08-24 | 中航飞机股份有限公司西安飞机分公司 | Mistake proofing limit structure of three -position switch |
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| Publication number | Publication date |
|---|---|
| CN105719858B (en) | 2017-10-31 |
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Address after: No. 710089 in Shaanxi province Xi'an city Yanliang District West Avenue Patentee after: AVIC Xi'an Aircraft Industry Group Co.,Ltd. Address before: 1 No. 710089 Shaanxi province Xi'an city Yanliang District West Avenue Patentee before: AVIC AIRCRAFT Corp. |
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Effective date of registration: 20210610 Address after: 1 No. 710089 Shaanxi province Xi'an city Yanliang District West Avenue Patentee after: AVIC AIRCRAFT Corp. Address before: 1 No. 710089 Shaanxi province Xi'an city Yanliang District West Avenue Patentee before: XI'AN AIRCRAFT BRANCH OF XI'AN AIRCRAFT INTERNATIONAL Corp. |