A kind of four control switchs that can singlehanded simple operations
Technical field
The present invention relates to four control switchs in a kind of aircraft flap control system.
Background technology
Four control switchs in the aircraft flap control system are used for the folding and unfolding work of 0 °, 10 °, 20 °, 30 ° of instruction aircraft flaps.Control requires: during positive operation, allow directly to pull or 10 ° or 20 ° or 30 ° by 0 °, but when oppositely pulling must or 20 ° or 10 ° the pause of stopping is arranged, after an additional move is arranged, just can enter next service position.
Four control switchs of general middle-size and small-size aircraft adopt external position-limited more, must pull open spacing with hand in addition when oppositely pulling, and need during operation to work simultaneously with two hands.Its course of work is loaded down with trivial details.Therefore, need a kind of four control switchs that can singlehanded simple operations to address this problem.
Summary of the invention
The invention provides a kind of four control switchs that can singlehanded simple operations, solved the problem with four control switchs of two manual manipulations.
The invention provides following solution:
A kind of four control switchs that can singlehanded simple operations, comprise handle, stage clip, pull bar, grooved slide rail, limit assembly, be used for four contacts of four controls, the inboard of grooved slide rail is the arc-shaped slot that covers four contact stations, is formed with respectively four sagging notches corresponding to four contact stations in arc-shaped slot; Described handle to being connected, radially is fixedly installed guiding projection at the sidewall of pull bar by stage clip and pull rod shaft, and described guiding projection is limited in the arc-shaped slot mobile, and with described four sagging notch size couplings; If the operation forward is guiding projection mobile direction from left to right in arc-shaped slot, the right flank of two notches in the middle of then being positioned in four notches is provided with chamfering; Described limit assembly has two groups, is fixedly installed in respectively the top of two notches with chamfering; Every group of limit assembly consists of by return spring and locating part, wherein the right flank of locating part bottom stops guiding projection mobile generation the left in arc-shaped slot, the left surface of locating part bottom is provided with chamfering, and return spring can be opened locating part so that guiding projection supports when moving right smoothly; The upper end of described stage clip is fixedly installed compressing tablet, and when guiding projection sank into described notch, this compressing tablet can be subjected to stage clip reset response and the stable contact in corresponding contact.
During four control switchs of operation, as at 0 ° or 10 ° or 20 °, when the needs forward is pulled, at first mention handle from original position, just can directly pull required service position after the disengaging, can cross or 10 ° or 20 ° midway.
When oppositely pulling, can not directly pull 0 ° from 20 ° or 30 °, stop only at 10 ° or 20 ° an additional move of unclamping and recurring to handle is arranged to stop at 10 ° or 20 ° of limited location structures, just can enter 0 ° of station.
These four control switchs can singlehanded simple operations, the folding and unfolding of safety command aircraft flap.
Description of drawings
Fig. 1 is four control switch structural representations of the present invention.
Wherein, 11-contact; The 12-handle; The 13-compressing tablet; The 14-stage clip; The 15-pull bar; 16-slide rail, A are limit assembly and relevant installation site.
Fig. 2 is the enlarged drawing of A section among Fig. 1, i.e. the scheme of installation of limit assembly.
Wherein, 21-locating part; The 22-return spring; 23-guide (guiding projection).
Embodiment
Below in conjunction with principle schematic four control switchs are described in detail:
During positive operation, mention handle 12, by being fixed on guide 23 on the pull bar 15 along the orbiting motion of slide rail 16 constraint, location of instruction release handle at needs, pull bar 15 and guide 23 fall in the slide rail 16 corresponding notches in the effect of stage clip 14, compressing tablet 13 make contacts 11 provide the control command of wing flap service position.During positive operation, guide 23 slip from left to right, can support the locating part 21 open limit assembly it is lifted and on push back a spring 22, after guide 23 slipped over, locating part 21 is return under the effect of return spring 22.
During reverse operating, same, mention handle 12; by being fixed on guide 23 on the pull bar 15 along the orbiting motion of slide rail 16 constraint; when guide 23 slided into limit assembly along the C track, because the barrier effect of 21 pairs of guides 23 of locating part, handle 12 can not continue to pull.Only have handle 12 is unclamped, guide 23 glides and falls in the notch along the B track under the effect of stage clip 14, and mention handle 12 this moment again, and guide 23 just can make the locating part 21 of limit assembly lift, thereby finishes the reverse operating of additional move.