CN111114754A - Locking mechanism and folding airfoil with same - Google Patents
Locking mechanism and folding airfoil with same Download PDFInfo
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- CN111114754A CN111114754A CN201911402036.1A CN201911402036A CN111114754A CN 111114754 A CN111114754 A CN 111114754A CN 201911402036 A CN201911402036 A CN 201911402036A CN 111114754 A CN111114754 A CN 111114754A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/38—Adjustment of complete wings or parts thereof
- B64C3/56—Folding or collapsing to reduce overall dimensions of aircraft
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- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention discloses a locking mechanism and a folding wing surface with the same, belongs to the technical field of aircraft design, and aims to solve the problem that the existing locking mechanism occupies a layout space in the unfolding direction. The locking mechanism comprises a first component, a second component and a locking device, the locking device comprises a telescopic locking pin, a locking hole, a releasing mechanism and a triggering mechanism, and when the second component is in an unfolding position, the releasing mechanism is triggered and drives the locking pin to extend out of and enter the locking hole; the central axes of the locking pin and the locking hole are arranged in parallel with the central axis of the pivot. Compared with the prior art, the locking device occupies flexible space design and can meet the requirement of arranging the locking device in a small expansion space.
Description
Technical Field
The invention belongs to the technical field of aircraft design, particularly relates to a foldable airfoil surface structure design, and particularly relates to a foldable airfoil surface and an in-place locking mechanism thereof.
Background
The folding wing can reduce the radial size of the aircraft, reduce the volume of a storage or launching device and facilitate transportation or launching, thereby increasing the carrying capacity of a transportation vehicle or a naval vessel. The folding wing unfolding and locking mechanism has the function that the wing surface is folded before the aircraft is used, and automatically unfolded and reliably locked under the action of driving force after being launched or in the flying process according to the requirement.
The shape maintenance of the existing folding wing surface is mainly realized by pushing a lock pin into a hole by a spring after the folding wing surface is unfolded in place. In the unset state, the locking pin needs to be restrained within the folding interface, and the smooth unfolding of the wing surface is ensured. The conventional folding wing surface mostly adopts a span-wise locking mode that a lock pin movement axis is vertical to a folding rotating shaft, and the lock pin is restrained by utilizing a folding interface. The mode lockpin stroke occupies a larger layout space in the unfolding direction, so that the space occupied by the locking mechanism is larger, and the requirement of arranging the locking mechanism in a small unfolding space cannot be met.
Disclosure of Invention
The invention aims to provide a locking mechanism and a folding wing surface with the same, so that the volume of the locking mechanism and the occupied spanwise layout space are reduced.
According to a first aspect of the present invention, a locking mechanism comprises a first member, a second member and a locking device, wherein the first member is connected with the second member through a pivot, so that the second member can rotate around the pivot and further rotate relative to the first member to different positions, wherein the different positions at least comprise a unfolding position and a folding position, and the locking device is at least used for locking the second member at the unfolding position; the locking device includes:
a retractable locking pin disposed in the first component;
a locking hole provided in the second member;
a release mechanism provided in the first member, the release mechanism being triggered when the second member is in the deployed position and driving the locking pin to extend out and into the locking hole to lock the second member relative to the first member in the pivoting direction; and
a trigger mechanism disposed on the second member for triggering the release mechanism when the second member is in the deployed position;
the central axes of the locking pin and the locking hole are collinear, and the central axes of the locking pin and the locking hole are arranged in parallel with the central axis of the pivot.
Therefore, the central axes of the locking pin and the locking hole are parallel to the central axis of the folding pivot, so that the locking stroke of the locking pin does not occupy the layout space in the unfolding direction, the freedom degree of the setting of the locking pin stroke is higher, compared with the prior art, the locking device occupies flexible space design, and can meet the requirement of arranging the locking device in a small unfolding space.
According to a further embodiment of the first aspect of the present invention, the second part is fixedly connected to a connecting piece, which is pivotally connected to the first part, and the locking hole is provided in the connecting piece.
Therefore, the locking device is formed by the connecting piece fixedly connected with the second part and the locking pin, so that direct abrasion of the second part is reduced, the connecting piece is replaced or repaired instead of the second part, and the use and maintenance cost of the product is reduced.
According to a further embodiment of the first aspect of the invention, the release mechanism comprises:
a first elastic member for applying an elastic force to the locking pin, the elastic force driving the locking pin into the locking hole when the locking pin is in a free state;
a safety pin disengageably coupled with the locking pin, the locking pin being in a restrained state when it is coupled with the locking pin; when it is decoupled from the locking pin, the locking pin is in a free state; the arming pin is decoupled from the locking pin when the release mechanism is triggered.
Further, the release mechanism further comprises: and the middle part of the lever is arranged on the first component through a rotating shaft, the first end of the lever is connected with the safety pin, the second end of the lever is an trigger end, and when the second component is in the unfolding position, the trigger mechanism applies acting force to the trigger end so as to decouple the safety pin from the locking pin.
Further, the release mechanism further comprises: and a second elastic member for applying a force to the lever to generate a torque in a direction consistent with a moving direction of the safety pin when the safety pin is coupled to the locking pin.
Therefore, the invention adopts the lever principle, utilizes the elastic force, such as the elastic force provided by a torsion spring, as the continuous restraining force, and realizes the restraint that the locking pin does not protrude out of the interface of the two parts by the way that the safety pin extends into the groove or the hole of the locking pin. When the lever is pushed by the trigger mechanism driven by the unfolding force, the constraint force provided by the elastic piece is overcome, so that the lever rotates around the lever rotating shaft, the constraint of the safety pin on the locking pin is relieved, the locking pin extends out to enter the interface of the two components and further enters the locking hole, and the components are unfolded and locked in place.
Furthermore, a transverse strip-shaped hole is formed in the first end of the lever, a transversely extending rotating shaft is arranged at the connecting end of the safety pin, and the rotating shaft is movably matched in the strip-shaped hole.
Therefore, the strip-shaped hole with the movement allowance is matched with the pin rotating shaft, and the mechanism is prevented from being locked. Meanwhile, the requirements on the machining and matching precision of the lever, the safety pin and the locking pin are reduced.
Further, the interface side of the first component is provided with a mounting groove, the release mechanism is arranged in the mounting groove and is covered by a cover plate, and the cover plate is provided with a through hole for the trigger mechanism to pass through.
Therefore, compared with most locking mechanisms exposed outside the aircraft in a folded state, the release mechanism occupying most of the volume of the locking device is sealed in the component body, so that the overall aerodynamic performance of the aircraft is reduced, and the flight stability of the aircraft is prevented from being influenced.
Meanwhile, the release mechanism is sealed in the component body, so that the influence on the external shape of the aircraft is avoided, the structural design difficulty of the aircraft storage or launching device is reduced, and the space occupation of the aircraft in the storage or transportation process is reduced.
According to another embodiment of the first aspect of the present invention, the lock mechanism further comprises an unlocking means which is operated to drive the lock pin to retract and exit the lock hole in a state where the second member is locked in the deployed position.
According to a further embodiment of the first aspect of the present invention, the trigger mechanism comprises a stud formed on the second part or a pin or screw removably attached to the second part.
According to a second aspect of the invention, a folded aerofoil comprises the locking mechanism according to the above aspect, wherein the first part is an inner wing of the folded aerofoil and the second part is an outer wing of the folded aerofoil, the locking mechanism locking the outer wing relative to the inner wing when the outer wing is deployed into position.
By adopting the technical scheme, the locking mechanism and the folding wing surface applied by the locking mechanism can realize the reliable restraint of the locking pin before the wing surface is unfolded in place and trigger the reliable locking function of the locking pin after the wing surface is unfolded in place, and the locking device occupies small space in the wing surface unfolding direction, can save the unfolding layout space to the greater extent, and has simple structure and good universality.
Drawings
FIG. 1 is a schematic illustration of a folded airfoil according to an embodiment of the invention in an unfolded position; wherein, (a) is a side view and (b) is a front view;
FIG. 2 is a schematic illustration of a folded airfoil according to an embodiment of the invention;
FIG. 3 is a schematic view, partly in section, of the front view shown in FIG. 1(b), partly in section for schematically showing the structure of the locking device;
FIG. 4 is a schematic structural diagram of a locking device according to an embodiment of the present invention; wherein (a) schematically represents a state in which the release mechanism is not triggered and the locking device is not locked, (b) schematically represents a state in which the release mechanism is triggered and the locking device is in a locked state;
FIG. 5 is a schematic view of the overall structure of an inner wing according to an embodiment of the present invention; wherein, (a) is a perspective view of the inner wing, and (b) is a partial sectional view of the inner wing, wherein the partial sectional view is used for schematically representing the structure of the mounting groove in the inner wing;
FIG. 6 is a schematic structural view of a lever torsion spring according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a connector according to an embodiment of the present invention.
Detailed Description
The structure of the locking mechanism and the folding airfoil for carrying out the invention is described schematically below together with the accompanying drawings. The following illustrative embodiments are to make it easier for those skilled in the art to understand the present invention, and are not to be construed as limiting the present invention. The present invention may be subject to alterations and/or modifications to the following embodiments without departing from the general concept thereof.
Fig. 1 shows a structural schematic diagram of the first component 3 and the second component 1 which are locked in the unfolded state by the locking device. According to an embodiment of the invention, the first part 3 is pivotally connected to the second part 1 such that the second part 1 can be pivoted, thereby enabling the second part 1 to be in different positions relative to the first part 3.
The "axial direction" in the following description of the present invention refers to a direction coinciding with the direction of the pivot axis.
For example, the first part 3 may be configured as an inner wing 3 of a folded airfoil, the second part 1 correspondingly being configured as an outer wing 1 of the folded airfoil. The folding airfoil can be used for aircrafts with the folding airfoil, such as carrier-based aircrafts, unmanned planes, missiles, rockets and the like. Furthermore, it will be understood by those skilled in the art that the first and second parts may be connected by a rotating shaft, so that any means, especially plates, for folding and unfolding may be implemented.
For convenience, the locking mechanism will be described in detail by taking the first member 3 as the inner wing 3 of the folding wing and the second member 1 as the outer wing 1 of the folding wing. It will be understood by those skilled in the art that although the following is expressed in terms of "inner wing" and "outer wing", the meaning is not limited to inner and outer wings of a folded airfoil surface, but it should be understood as the aforementioned first part, second part, i.e. any device, in particular a plate, connected by a rotation axis, enabling folding and unfolding.
The outer wing 1 is able to pivot with respect to the inner wing 3 to form an unfolded state (as shown in fig. 1) and a folded state (as shown in fig. 3) of the folded airfoil. As will be appreciated by those skilled in the art, the folded condition shown in FIG. 3 may be the final folded condition of the folded airfoil, or may be an intermediate condition during movement toward the final folded condition.
The locking means are at least used to lock the outer wing 1 in the unfolded state shown in fig. 1, in which the rotation of the outer wing 1 about the pivot axis relative to the inner wing 3 is locked by the locking means, and the outer wing 1 is connected to the inner wing 3 as one integral wing.
It will be appreciated that the inner wing 3 and the outer wing 1 may be locked in the unfolded state of the outer wing 1 by one or more of the above-described locking means, depending on the specific structure, size, etc. of the folded airfoil.
Fig. 3 shows a partially cut-away structural view of the folded airfoil, which is partially used to schematically show the structure of the locking device. As shown in fig. 3, the locking device comprises a retractable locking pin 6, the locking pin 6 being provided in the inner wing 3; a locking hole 21 provided in the outer wing 1. The above-mentioned "retractable" means that the locking pin linearly advances and retreats in a certain predetermined direction.
According to an embodiment of the present invention, the outer wing 1 is fixedly connected with a connecting member 2, the connecting member 2 is pivotally connected with the inner wing 3, for example, the connecting member 2 and the inner wing 3 are respectively provided with a shaft hole, and a rotating shaft penetrates through the shaft holes to realize the pivotal connection between the connecting member 2 and the inner wing 3. In this embodiment, the locking hole 21 is provided on the connecting member 2.
Referring to fig. 7, an example of the connector 2 is illustrated. As shown in the figure, in this example, one end of the connecting member 2 is provided with a pair of parallel connecting plates 23 for clamping the plate surface of the outer wing 1, and the connecting plates 23 are provided with mounting holes 24 for fixedly connecting with the outer wing 1 through bolts and the like. The other end 20 of the connecting piece 2 is provided with an axial hole 22 extending axially. The other end is provided with the lock hole 21, and the axial direction of the lock hole 21 is substantially parallel to the axial direction of the shaft hole 22.
Therefore, the locking device is formed by the connecting piece 2 fixedly connected with the outer wing 1 and the locking pin, so that the direct abrasion of the outer wing 1 caused by frequent folding and unfolding operations is reduced, and the connecting piece 2 is only required to be replaced or maintained instead of the outer wing 1 is integrally replaced during later maintenance and outer wing maintenance, so that the use and maintenance cost of the product is reduced.
Further, in this embodiment, one or both of the axial direction of the locking pin 6 and the axial direction of the locking hole 21 are disposed substantially parallel to the axial direction of the pivot between the link 2 and the inner wing 3, for example, the axial direction of the shaft hole or the axis of the rotation shaft, that is, the extending and contracting direction of the locking pin 6 is disposed substantially parallel to the axial direction of the pivot between the link 2 and the inner wing 3.
Therefore, the central axes of the locking pin and the locking hole are parallel to the central axis of the folding pivot, so that the locking stroke of the locking pin does not occupy the layout space in the unfolding direction, the freedom degree of the setting of the locking pin stroke is higher, compared with the prior art, the locking device occupies flexible space design, and can meet the requirement of arranging the locking device in a small unfolding space.
Preferably, the central axes of the locking pin and the locking hole are collinear, and the central axes of the locking pin and the locking hole are arranged in parallel with the central axis of the pivot.
The locking device further comprises a release mechanism which can be triggered by other means and which, when triggered, is adapted to drive the locking pin out to enter at least partially the locking hole 21 to lock the outer wing 1 in the pivoting direction relative to the inner wing 3.
According to an embodiment of the invention, the release mechanism is provided in the inner wing 3, which is triggered when the outer wing 1 is deployed in place, i.e. in the fully deployed position. To this end, the locking device according to the invention further comprises a triggering mechanism provided on the outer wing 1 for triggering the release mechanism when the outer wing 1 is in the deployed position.
According to an embodiment of the present invention, referring to fig. 3, 4(a), (b), the release mechanism comprises:
a first elastic member 8 for applying an elastic force to the locking pin 6, which drives the locking pin at least partially into the locking hole 21 when the locking pin 6 is in a free state. The free state here means that the locking pin is only subjected to the elastic force of the elastic member 8 in addition to the frictional force that is necessarily present between the locking pin and the surrounding contact members, or although the locking pin 6 is subjected to the restraining force of other members, the restraining force is insufficient to prevent the locking pin 6 from performing the extending action by the elastic force of the elastic member 8.
A safety pin 10 which is detachably coupled with the locking pin 6, and when it is coupled with the locking pin 6, the locking pin is in a restrained state. The restrained state means that the locking pin 6 is still in a stationary state even if the elastic member 8 exerts an elastic force on the locking pin. When the safety pin 10 is decoupled from the locking pin 6, the locking pin 6 is in a free state, i.e. the locking pin 6 at least partially enters the locking hole 21 under the driving of the elastic force of the elastic element 8, and the connecting element 2 (the outer wing 1) is locked with the inner wing 3. When the release mechanism is triggered by the trigger mechanism, the safety pin 10 is decoupled from the locking pin 6.
As shown in the drawings, the first elastic member 8 is coaxially disposed at a rear end of the locking pin 6, where the rear end is an end of the locking pin 6 that extends in an opposite direction. When the safety pin 10 and the locking pin 6 are in a coupled state, the first elastic member 8 presses against the rear end of the locking pin 6 and is compressed to store a predetermined amount of elastic potential energy. This elastic potential energy is released when the safety pin 10 is decoupled from the locking pin 6 to drive the locking pin 6 into an extending action.
According to a further embodiment of the invention, the release mechanism further comprises: a lever 12, the middle of the lever 12 is installed in the inner wing 3 through a rotation shaft 14. A first end of the lever 12 is connected to the safety pin 10 for moving the safety pin 10 to and fro to couple or decouple the safety pin 10 to the locking pin 6. The second end of the lever 12 is the trigger end, and when the outer wing 1 is in the extended position, the trigger mechanism thereon applies an acting force to the trigger end, and the first end of the lever 12 moves in the direction opposite to the acting force, thereby driving the safety pin 10 to be decoupled from the locking pin 6.
According to a further embodiment of the invention, the release mechanism further comprises: a second elastic member 13 for applying a force to the lever 12 to generate a torque in the lever 12 in a direction corresponding to a moving direction of the safety pin 10 when the safety pin 6 is coupled. The invention can keep the safety pin 10 and the locking pin 6 coupled when the release mechanism is not triggered through the second elastic piece 13. At the same time, the safety pin 10 is decoupled from the locking pin 6 when the release mechanism is triggered, since the lever torque generated by the elastic element 13 is smaller than the lever torque generated by the trigger mechanism acting on the trigger end of the lever.
Alternatively, the second elastic member 13 is a torsion spring, as shown in fig. 6, which is sleeved on the rotating shaft 14, and a first arm of the torsion spring is connected to the lever 12, and a second arm of the torsion spring is fixed by a corresponding portion of the inner wing 3.
Therefore, the invention adopts the lever principle, utilizes the elastic force, such as the elastic force provided by a torsion spring, as the continuous restraining force, and realizes the restraint that the locking pin does not protrude out of the interface of the two parts by the way that the safety pin extends into the groove or the hole of the locking pin. When the lever is pushed by the trigger mechanism driven by the unfolding force, the constraint force provided by the elastic piece is overcome, so that the lever rotates around the lever rotating shaft, the constraint of the safety pin on the locking pin is relieved, the locking pin extends out to enter the interface of the two components and further enters the locking hole, and the components are unfolded and locked in place.
According to a further embodiment of the invention, the first end of the lever 12 is provided with a transverse strip-shaped hole, and the connecting end of the safety pin 10 is provided with a transversely extending swivel axis 11, which swivel axis 11 is movably fitted in said strip-shaped hole.
Therefore, the invention prevents the mechanism from being locked by adopting the strip-shaped hole with the movement allowance to be matched with the pin rotating shaft. Meanwhile, the matching mode reduces the requirements on the machining and matching precision of the lever, the safety pin and the locking pin.
Referring to fig. 5 in conjunction with fig. 4, the inner wing 3 has a concave structure as a whole, and includes a first block 31, a second block 32, and a connecting portion 33 for connecting lower portions of the two blocks, and a receiving space is formed above the connecting portion 33 between the two blocks.
The first block 31 and the second block 32 are respectively provided with a shaft hole 34 extending along the axial direction on the same side. The rotating shaft 17 is arranged in the shaft hole 22 of the connecting piece 2 and the shaft holes 34 of the first block 31 and the second block 32 in a penetrating way, so that the connecting piece 2 (the outer wing 1) and the inner wing 3 can be rotatably connected. Alternatively, the end of the rotating shaft 17 is provided with a stopper, such as a nut or a catch pin, for preventing the rotating shaft from being disengaged from the shaft hole.
The first block 31 is provided with a mounting slot 35 for mounting the release mechanism. Specifically, the surface of the inner wing 3 remote from the connection 33 forms an interface with the outer wing 1, and when the folded wing surface is unfolded into position, the interface of the inner wing 3 is in close connection with the corresponding interface of the outer wing 1. The material of the interface of the inner wing 3 is removed to form a first mounting groove 351 extending along the axial direction, and the mounting groove 351 is used for accommodating the lever 12 and the second elastic piece 13. The first mounting groove 351 is provided at a side wall thereof with a positioning hole for mounting the rotary shaft 14.
The first mounting groove 351 is covered by a cover plate 15, and a through hole for the trigger mechanism to pass through is formed in the cover plate 15. Further, the inner surface of the cover plate is partially removed, so that the first end of the lever and the abdicating space of the safety pin are formed, and the outer surface of the cover plate is basically flush with the outer surface of the inner wing.
Optionally, the second arm of the torsion spring is pressed against the inner surface of the cover plate 15.
Therefore, compared with most locking mechanisms exposed outside the aircraft in a folded state, the release mechanism occupying most of the volume of the locking device is sealed in the component body, so that the influence on the overall aerodynamic performance of the aircraft is reduced, and the flight stability of the aircraft is prevented from being influenced.
Meanwhile, the release mechanism is sealed in the component body, so that the influence on the external shape of the aircraft is avoided, the structural design difficulty of the aircraft storage or launching device is reduced, and the space occupation of the aircraft in the storage or transportation process is reduced.
An axially extending mounting hole for accommodating the locking pin 6 and the first elastic member 8 is formed below the first mounting groove 351, both ends of the mounting hole axially penetrate through the first block 31, and an outer port thereof is blocked by a plug 9. The plug 9 can be, for example, a screw. The inner end opening of the mounting hole is used for the locking pin 6 to extend out to enter the accommodating space between the two blocks.
A partition is formed between the first installation groove 351 and the installation hole, and the partition is provided with a through hole corresponding to the position of the safety pin 10, at least one part of the safety pin is always arranged in the through hole, and the through hole is used for guiding and positioning the safety pin 10 during the coupling and decoupling movement of the safety pin 10 and the locking pin 6, so that the moving path is accurate and faultless.
According to a further embodiment of the present invention, a stepped portion is formed at the rear end of the locking pin 6, and the outer port of the mounting hole is a stepped hole for stopping the locking pin from being separated from the mounting hole.
According to a further embodiment of the present invention, the locking pin 6 forms a coupling portion at a rear end thereof to be coupled with an end of the safety pin 10. The coupling may be a groove or a hole, for example. Preferably, the coupling portion is an annular groove formed on the stepped portion.
According to a further embodiment of the present invention, the locking hole is a tapered hole, and correspondingly, the front end of the locking pin is a flat cone structure matched with the tapered hole. The locking pin and the locking hole are in conical fit, so that the fit of the locking pin and the locking hole can be improved, and the requirements on the machining precision of the locking pin and the locking hole are reduced.
According to a further embodiment of the invention, the triggering mechanism comprises a stud formed on the outer wing 1 or a pin or screw removably attached to the outer wing 1.
According to another embodiment of the present invention, there is further provided an unlocking means which is operated to drive the locking pin 6 to be retracted and to exit the locking hole 21 in a state where the outer wing 1 is locked at the unfolded position. With reference to fig. 2, 4 and 5, a strip-shaped hole 36 is formed through the sidewall of the mounting hole, one end of the unlocking device is fixedly connected with the locking pin, and the other end of the unlocking device extends out of the strip-shaped hole 36, in the locking state of the unfolding position shown in fig. 4(b), because the safety pin 10 is decoupled from the locking pin 6, the unlocking device is operated along the retracting direction of the locking pin 6, the elastic force of the elastic member 8 is overcome, the locking pin exits from the locking hole 21, and contacts the locking state of the inner wing 3 and the outer wing 1, and at this time, the outer wing 1 can rotate relative to the inner wing 3 to realize the folding operation.
The embodiments and modifications of the present invention have been described above with reference to the drawings, but the present invention is not limited to the embodiments and modifications. Various equivalents and modifications may be made within the technical spirit of the present invention, and these equivalents and modifications are intended to fall within the scope of the present invention.
Claims (10)
1. A locking mechanism comprising a first part, a second part and a locking device, the first part being pivotally connected to the second part such that the second part can be rotated about the pivot and thereby relative to the first part into different positions including at least an extended position and a folded position, the locking device being at least operable to lock the second part in the extended position; characterized in that said locking means comprise:
a retractable locking pin disposed in the first component;
a locking hole provided in the second member;
a release mechanism provided in the first member, the release mechanism being triggered when the second member is in the deployed position and driving the locking pin to extend out and into the locking hole to lock the second member relative to the first member in the pivoting direction; and
a trigger mechanism disposed on the second member for triggering the release mechanism when the second member is in the deployed position;
the central axes of the locking pin and the locking hole are collinear, and the central axes of the locking pin and the locking hole are arranged in parallel with the central axis of the pivot.
2. The locking mechanism of claim 1, wherein a link member is fixedly connected to the second member, the link member being pivotally connected to the first member, the locking aperture being provided in the link member.
3. The locking mechanism of claim 1 or 2, wherein the release mechanism comprises:
a first elastic member for applying an elastic force to the locking pin, the elastic force driving the locking pin into the locking hole when the locking pin is in a free state;
a safety pin disengageably coupled with the locking pin, the locking pin being in a restrained state when it is coupled with the locking pin; when it is decoupled from the locking pin, the locking pin is in a free state; the arming pin is decoupled from the locking pin when the release mechanism is triggered.
4. The locking mechanism of claim 1 or 2, wherein the release mechanism further comprises: and the middle part of the lever is arranged on the first component through a rotating shaft, the first end of the lever is connected with the safety pin, the second end of the lever is an trigger end, and when the second component is in the unfolding position, the trigger mechanism applies acting force to the trigger end so as to decouple the safety pin from the locking pin.
5. The locking mechanism of claim 4, wherein the release mechanism further comprises: and a second elastic member for applying a force to the lever to generate a torque in a direction consistent with a moving direction of the safety pin when the safety pin is coupled to the locking pin.
6. A locking mechanism according to claim 4, 5 or 6 wherein the lever is provided at a first end thereof with a transverse strip-like aperture and the end of the arming pin connecting end is provided with a transversely extending swivel shaft which is movably engaged in the strip-like aperture.
7. The lock mechanism according to any one of claims 1 to 6, further comprising an unlocking means which is operated to drive the lock pin to retract and exit the lock hole in the state where the second member is locked in the deployed position.
8. The locking mechanism of any one of claims 1 to 7, wherein the trigger mechanism comprises a stud formed on the second component or a pin or screw removably connected to the second component.
9. The locking mechanism of any of claims 1 to 8, wherein the first component is an inner wing of a folded airfoil and the second component is an outer wing of the folded airfoil.
10. A folded airfoil comprising a locking mechanism according to any of claims 1 to 8, wherein the first part is an inner wing of the folded airfoil and the second part is an outer wing of the folded airfoil, the locking mechanism locking the outer wing relative to the inner wing when the outer wing is deployed into position.
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| CN201911402036.1A CN111114754B (en) | 2019-12-31 | 2019-12-31 | Locking mechanism and folding airfoil with same |
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| CN201911402036.1A CN111114754B (en) | 2019-12-31 | 2019-12-31 | Locking mechanism and folding airfoil with same |
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| CN111114754A true CN111114754A (en) | 2020-05-08 |
| CN111114754B CN111114754B (en) | 2021-06-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112977800A (en) * | 2021-03-24 | 2021-06-18 | 中国科学院力学研究所 | Folding wing for hypersonic aircraft |
| CN113665789A (en) * | 2021-08-11 | 2021-11-19 | 广东空天科技研究院 | Thin folding wing and locking mechanism thereof |
| CN114261515A (en) * | 2022-01-18 | 2022-04-01 | 山西汾西重工有限责任公司 | Duck wing locking device and glider |
| CN115180125A (en) * | 2022-09-09 | 2022-10-14 | 致导创新(天津)科技有限公司 | Unmanned aerial vehicle foot rest connection structure |
| CN115367099A (en) * | 2022-07-29 | 2022-11-22 | 成都飞机工业（集团）有限责任公司 | Lockpin linear driving device for aircraft wing folding system |
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| CN112977800A (en) * | 2021-03-24 | 2021-06-18 | 中国科学院力学研究所 | Folding wing for hypersonic aircraft |
| CN113665789A (en) * | 2021-08-11 | 2021-11-19 | 广东空天科技研究院 | Thin folding wing and locking mechanism thereof |
| CN114261515A (en) * | 2022-01-18 | 2022-04-01 | 山西汾西重工有限责任公司 | Duck wing locking device and glider |
| CN115367099A (en) * | 2022-07-29 | 2022-11-22 | 成都飞机工业（集团）有限责任公司 | Lockpin linear driving device for aircraft wing folding system |
| CN115180125A (en) * | 2022-09-09 | 2022-10-14 | 致导创新(天津)科技有限公司 | Unmanned aerial vehicle foot rest connection structure |
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