CN209617521U - A kind of soft detent cam mechanism of mechanical position limitation - Google Patents
A kind of soft detent cam mechanism of mechanical position limitation Download PDFInfo
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- CN209617521U CN209617521U CN201822224312.7U CN201822224312U CN209617521U CN 209617521 U CN209617521 U CN 209617521U CN 201822224312 U CN201822224312 U CN 201822224312U CN 209617521 U CN209617521 U CN 209617521U
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- detent
- soft
- control bar
- friction control
- cam mechanism
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Abstract
The utility model discloses a kind of soft detent cam mechanism of mechanical position limitation, including detent disk (1) and roller follower, detent disk (1) is equipped with the soft detent of groove type (6), roller follower includes friction control bar (3), latch (5), bearing (7) and spring (8), friction control bar (3) is placed in the mounting hole of throttle lever, spring (8) is placed in friction control bar (3) and the internal mounting hole of latch (5), always it is in compressive state, bearing (7) is installed on friction control bar (3) lower end, it can be rolled along the curved profile on detent disk (1), in each section of curved profile being divided on detent disk (1) by soft detent (6), the radius in curved profile to the basic circle center of circle is gradually increased.In the cam mechanism of the utility model, detent point prompts to operator as exemplary position point, avoids the generation of maloperation.The united application of cam mechanism and spring, make operator can perception variation.
Description
Technical field
The utility model belongs to aircraft fax throttle platform technical field, and in particular, to one kind has the soft detent of groove type
Cam mechanism, for throttle lever the feedback of exemplary position point and keep function.
Background technique
Throttle platform is the interface of aircraft engine, pushes the adjustable engine of throttle lever on throttle platform
Thrust.Throttle lever has exemplary position point.On classical location point, engine will be in specific working condition.
Home and abroad mostly uses the mode of limited block and positioning groove cooperating to realize the feedback of classical location point at present
Function.This structure is complex, and spanner need to be lifted at exemplary position, and then drives limited block mobile, to unlock next line
Journey.And this structure does not have stablizing for classical location point and keeps function.The energy of pilot is occupied, increases pilot's
Burden, does not meet the design of man-machine efficacy.For the requirement for adapting to China's airplane throttle steerable system, needs one kind and meet man-machine function
Imitate the soft clamping mechanism of design.
When it moves to exemplary position point, need to provide a feedback to pilot.And in the feelings of no human intervention
Under condition, what throttle lever can be stable is maintained at exemplary position point.
Utility model content
In view of the above situation of the prior art, the purpose of the utility model is to provide a kind of soft detent cam machines of mechanical position limitation
Structure, the mechanism structure is simple and compact, and limit is accurate, and high reliablity is easily installed, dismantles, and for ease of maintenaince, can meet throttle lever and exist
The feedback and holding function of exemplary position point.
The above-mentioned purpose of the utility model is realized using following technical scheme:
A kind of soft detent cam mechanism of mechanical position limitation, it is characterised in that: including detent disk and roller follower, on detent disk
It is provided with the soft detent of groove type, roller follower includes friction control bar, latch, bearing and spring, wherein friction control
Bar is placed in the mounting hole of throttle lever, and spring is placed in inside friction control bar and latch in mounting hole, and always in pressure
Contracting state, bearing are installed on friction control bar lower end, and bearing can be rolled along the curved profile on detent disk, by soft card on detent disk
In each section of curved profile that position is divided into, the radius in curved profile to the basic circle center of circle is gradually increased.
Further, the roller follower may also include bushing, the mounting hole transition fit of liner outer wall and throttle lever,
Friction control bar outer wall and bushing inner wall clearance fit, in this way, the mounting hole direct friction of friction control bar and throttle lever is changed
Become friction control bar and bushing friction, lubrication can be increased, reduces friction.
Further, the quantity of soft detent is identical as the exemplary position of throttle lever point quantity.
The soft detent cam mechanism of the mechanical position limitation of the utility model, from man-machine efficacy design angle, detent point conduct
One exemplary position point avoids the generation of maloperation to operator one prompt.The united application of cam mechanism and spring, makes
Operator can perception variation.In addition, when pulling anti-push rod in the range of 0 °~40 °, it is convex if decontroling anti-push rod
Wheel mechanism can realize automatic resilience function, so that being not necessarily to external force, can spring back to initial motion position.
Detailed description of the invention
Fig. 1 is the schematic diagram of the soft detent cam mechanism of mechanical position limitation of the utility model；
Fig. 2 is the cross-sectional view of the soft detent cam mechanism of mechanical position limitation of the utility model.
Specific embodiment
In order to be more clearly understood that the purpose of this utility model, technical solution and advantage, with reference to the accompanying drawings and embodiments,
The present invention will be further described in detail.
Fig. 1 is the schematic diagram of the soft detent cam mechanism of mechanical position limitation of the utility model.Fig. 2 is the machinery of the utility model
The cross-sectional view of soft detent cam mechanism is limited, the part being connected with four-bar mechanism is omitted in Fig. 2.As shown, this reality
Include detent disk 1 and roller follower with the novel soft detent cam mechanism of mechanical position limitation, is provided with groove type on detent disk 1
Soft detent 6, roller follower include friction control bar 3, bushing 4, latch 5, bearing 7 and spring 8.Detent disk 1 uses straight pin
10 are rigidly connected in shaft 9, and shaft 9 is installed on inside throttle lever, are connected using bearing.Roller follower is placed in throttle lever
Mounting hole in, the wherein mounting hole transition fit of 4 outer wall of bushing and throttle lever is opposing stationary both when work.Friction control
3 outer wall of bar and 4 inner wall clearance fit of bushing, opposite sliding both when work.Spring 8 is placed in friction control bar 3 and latch 5
In internal mounting hole, and it is in compressive state always.Bearing 7 is installed on 3 lower end of friction control bar by pin shaft 2, can be along detent
Curved profile on disk rolls, in each section of curved profile being divided on detent disk by soft detent 6, curved profile to the basic circle center of circle
Radius be gradually increased.Although friction control bar 3 and 4 inner wall clearance fit of bushing is described above, it is placed in the peace of throttle lever
The situation in hole is filled, in this case, lubrication can be increased, reduce friction.It is but without being limited thereto, bushing 4 also may not be present, it is this
In the case of, friction control bar 3 can be placed directly in the mounting hole of throttle lever.
The soft detent cam mechanism working principle of the mechanical position limitation of the utility model is: when pilot pulls anti-push rod, leading to
Crossing four-bar mechanism rotates counterclockwise detent disk 1.Roller follower relative space position is constant, but the bearing 7 of its underpart exists
Curved profile under the rotation of detent disk 1 on detent disk rolls.Since the radius in curved profile to the basic circle center of circle is gradually increased,
So that friction control bar 3 moves upwards in bushing 4, then gradually reduce spring 8.In classical location point, the curve of detent disk
The soft detent 6 of groove type is provided on profile.When bearing 7 falls into soft detent 6, spring quick-release detail decrement, when want after
It is continuous when pulling anti-push rod, to provide one it is instantaneous energetically, make spring Fast Compression, so that bearing be allowed to leave from soft detent.It is soft
Detent can be in classical location point to pilot one apparent feedback, and in the case where pilot's nonintervention, and anti-push rod is steady
Surely it is maintained on the corresponding classical location point of soft detent.
Further, since in each section of curved profile being divided on detent disk by soft detent 6, curved profile to the basic circle center of circle
Radius is gradually increased, that is, from initial position (referring to Fig. 1) to the curved profile first soft detent point to base on detent disk
The radius of the round heart is gradually increased, in this way, when pilot pulls anti-push rod in the range of 0 °~40 °, so that friction control
Bar 3 processed gradually moves upwards, and then gradually reduce 8 springs, stores elastic energy, decontrols anti-push rod, spring release elasticity at this time
Can, it drives anti-push rod that can move initial position, automatic resilience function can be realized.
The case where 2 soft detents are illustrated in figure, but, the quantity of soft detent can be more or less than 2, depend on
The quantity of the exemplary position point of throttle lever.
Claims (3)
1. a kind of soft detent cam mechanism of mechanical position limitation, it is characterised in that including detent disk (1) and roller follower, detent disk
(1) the soft detent of groove type (6) is provided on, roller follower includes friction control bar (3), latch (5), bearing (7) and bullet
Spring (8), wherein friction control bar (3) is placed in the mounting hole of throttle lever, and spring (8) is placed in friction control bar (3) and stop
It sells in (5) internal mounting hole, and is in compressive state always, bearing (7) is installed on friction control bar (3) lower end, can be along detent
Curved profile on disk (1) rolls, and in each section of curved profile being divided on detent disk (1) by soft detent (6), curved profile is arrived
The radius in the basic circle center of circle is gradually increased.
2. the soft detent cam mechanism of mechanical position limitation described in accordance with the claim 1, wherein the roller follower further includes bushing
(4), the mounting hole transition fit of bushing (4) outer wall and throttle lever, friction control bar (3) outer wall are matched with bushing (4) inner wall gap
It closes.
3. the soft detent cam mechanism of mechanical position limitation described in accordance with the claim 1, wherein the quantity and throttle of the soft detent (6)
The exemplary position point quantity of bar is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822224312.7U CN209617521U (en) | 2018-12-27 | 2018-12-27 | A kind of soft detent cam mechanism of mechanical position limitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822224312.7U CN209617521U (en) | 2018-12-27 | 2018-12-27 | A kind of soft detent cam mechanism of mechanical position limitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209617521U true CN209617521U (en) | 2019-11-12 |
Family
ID=68447601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822224312.7U Active CN209617521U (en) | 2018-12-27 | 2018-12-27 | A kind of soft detent cam mechanism of mechanical position limitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209617521U (en) |
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2018
- 2018-12-27 CN CN201822224312.7U patent/CN209617521U/en active Active
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