Folding wing locking mechanism

Abstract

The invention provides a folding wing locking mechanism which comprises a folding part hinged to a fixing part and a locking part hinged to the fixing part. In the locking state, the locking assembly limits the folding part, and the folding part is located at the first position or the second position; in the unlocking state, the locking assembly relieves limiting of the folding part. And when the locking assembly is in the unlocking state, the reset assembly drives the folding part to move from the first position to the second position along the hinge part. The mechanism has the beneficial effects that the structure is simple, the reliability is high, the impact load in the folding wing unfolding process can be eliminated, so that the flight path can be better controlled, and the mechanism has the functions of automatic unfolding, unfolding state keeping and automatic folding at the same time.

Description

Technical Field

[0001] The invention belongs to the field of flight equipment, and in particular relates to a folding wing locking mechanism. Background Art

[0002] When aircraft, rockets, missiles and other aircraft fly in the atmosphere, they often use air rudders as the actuators of their attitude control. In order to increase the control force, the size of the air rudder needs to be increased. In order to reduce the storage space, the size of the air rudder needs to be reduced, which creates a contradiction.

[0003] At present, most foldable wing-rudder structures rely on manual folding, and rely on the inner wall of the outer box tube to keep them folded. After leaving the box, they rely on the torsion spring force to unfold. During the unfolding process, impact force will be generated on the projectile, affecting the flight trajectory. Some mechanisms driven by hydraulic cylinders can be automatically and repeatedly used, but they are large in size and cannot be placed in small wing-rudder structures, destroying the aerodynamic shape. Summary of the invention

[0004] In view of this, the present invention aims to provide a folding wing locking mechanism to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows: A folding wing locking mechanism, comprising: A folding portion, the folding portion being hinged to the fixing portion; A locking assembly, in a locked state, the locking assembly limits the folding portion, and the folding portion is in a first position or a second position; in an unlocked state, the locking assembly releases the limit on the folding portion; The reset assembly drives the folding portion to move from the first position to the second position along the hinged portion when the locking assembly is in the unlocked state.

[0006] Furthermore, the locking assembly includes a guide member and a latch, a guide groove is formed on the side wall of the guide member, a guide block is provided on the latch, the guide block is located inside the guide groove, and the latch moves along the opening direction of the guide groove following the guide block; When both ends of the latch are respectively connected to the folding part and the fixing part, it is in a locked state, and when the latch is only connected to the folding part or the fixing part, it is in an unlocked state.

[0007] Furthermore, a driving assembly is provided at one end of the guide member, a power output end of the driving assembly is connected to the guide member, and the guide member drives the latch to move.

[0008] Furthermore, a limiting block is arranged on the outer side of the guide member, and a limiting groove corresponding to the latch is opened in the limiting block. The latch is located in the limiting groove and moves along the opening direction of the limiting groove.

[0009] Furthermore, a positioning block corresponding to the limiting block is arranged in the folding part or the fixing part, a positioning hole is opened on the positioning block, and a through hole is opened on the bottom surface of the limiting groove. When in the locked state, the pin passes through the through hole and is inserted into the inner side of the positioning hole.

[0010] Furthermore, the positioning block is a semicircular structural member with two positioning holes. A fan-shaped block is fixedly arranged at one end of the limit block adjacent to the positioning block. In the locked state, the fan-shaped block fits the positioning block, and the latch is inserted into one of the two positioning holes.

[0011] Furthermore, the fan-shaped block is a fan-shaped structural member with an angular arc of 90°.

[0012] Furthermore, the reset assembly includes an elastic member and a receiving block. There are two receiving blocks, which are respectively fixedly connected to the folding part and the fixed part. A receiving groove is provided on the two receiving blocks. The elastic member is located on the inner side of the receiving groove. The two receiving blocks are driven to rotate relative to each other through the elastic deformation of the elastic member.

[0013] Furthermore, the elastic member is a structural member formed by stacking a plurality of spring steel sheets.

[0014] Furthermore, the guide member and the limit block are both structural members made of carbon fiber composite materials.

[0015] Compared with the prior art, the folding wing locking mechanism described in the present invention has the following beneficial effects: simple structure, high reliability, and can eliminate the impact load during the folding wing deployment process to better control the flight trajectory. The mechanism also has the functions of automatically deploying and maintaining the deployed state and automatically folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the folding wing locking mechanism according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the folding portion structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the fixing part according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the guide member according to an embodiment of the present invention; Figure 5 It is a partial structural schematic diagram of the limit block according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a reset component according to an embodiment of the present invention; Figure 7 It is a schematic diagram of the explosion structure of the locking assembly and the folding part according to an embodiment of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the limit block according to an embodiment of the present invention.

[0017] Explanation of the accompanying drawings: 1. folding part; 101. positioning block; 102. positioning hole; 2. fixing part; 3. locking assembly; 301. guide member; 302. latch; 303. guide groove; 304. guide block; 305. limit block; 306. limit groove; 307. fan-shaped block; 4. reset assembly; 401. elastic member; 402. receiving block; 5. driving assembly. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0022] like Figure 1-Figure 6 Shown: A folding wing locking mechanism, comprising: A folding portion 1, wherein the folding portion 1 is hinged to the fixing portion 2; The locking assembly 3, in the locked state, limits the folding portion 1, and the folding portion 1 is in the first position or the second position; in the unlocked state, the locking assembly 3 releases the limit on the folding portion 1; The reset assembly 4 drives the folding portion 1 to move from the first position to the second position along the hinged portion when the locking assembly 3 is in the unlocked state.

[0023] The folding wings of the flying device are divided into a foldable folding portion 1 and a fixed portion 2 fixedly connected to the fuselage. When the flying device is being transported or waiting to be launched, the folding portion 1 is in a folded state. When the flying device is launched, the folding portion 1 is in an unfolded state for flying. The above-mentioned first position is the position of the folding portion 1 in the folded state, and the second position is the position of the folding portion 1 in the unfolded state. In this embodiment: the second position is the relative position of the folding portion 1 and the fixed portion 2 when the folding portion 1 is parallel to the fixed portion 2, and the first position is the relative position of the folding portion 1 and the fixed portion 2 in other cases. Specifically, in the first position, the folding portion 1 is in a folded posture and the angle between it and the fixed portion 2 is 90°, and in the second position, the folding portion 1 is in an unfolded posture and the angle between it and the fixed portion 2 is 180°.

[0024] The folding wings enable convenient transportation of the flying device and make its launch window more adaptable. After launch, the staff can adjust the state of the folding wings through the locking component 3 and automatically unfold the folding wings through the resetting component 4.

[0025] The locking assembly 3 includes a guide member 301 and a latch 302. A guide groove 303 is formed on the side wall of the guide member 301. A guide block 304 is provided on the latch 302. The guide block 304 is located inside the guide groove 303. The latch 302 moves along the opening direction of the guide groove 303 following the guide block 304. When both ends of the latch 302 are respectively connected to the folding portion 1 and the fixing portion 2, it is in a locked state. When the latch 302 is only connected to the folding portion 1 or the fixing portion 2, it is in an unlocked state.

[0026] In this embodiment, the guide member 301 is a columnar structural member, the guide groove 303 is an elliptical track surrounding the outer wall of the guide member 301, and the guide groove 303 is a continuous structure. The guide member 301 rotates along its axis. At this time, the pin 302 makes a reciprocating motion every time the guide member 301 rotates half a circle. The continuous reciprocating motion of the pin 302 is achieved through the unidirectional rotation of the guide member 301, thereby realizing the function of the locking assembly 3 changing from a locked state to an unlocked state and then to a locked state; in other embodiments, the guide member 301 can be replaced by other structures that can drive the pin 302 to achieve reciprocating motion.

[0027] A driving component 5 is provided at one end of the guide member 301, and the power output end of the driving component 5 is connected to the guide member 301, and drives the pin 302 to move through the guide member 301; in the present embodiment, the driving component 5 is a small motor; in other embodiments, the driving component 5 can be replaced with a magnetic switch, a servo motor, a cylinder, or the like that can realize a device that drives the pin 302 to move. It should be noted that when the driving component 5 is a cylinder, the guide member 301 can be removed, and the power output end of the cylinder can be fixedly connected to the pin 302, thereby realizing the reciprocating motion of the pin 302.

[0028] A limit block 305 is arranged on the outside of the guide member 301, and a limit slot 306 corresponding to the latch 302 is opened in the limit block 305. The latch 302 is located in the limit slot 306 and moves along the opening direction of the limit slot 306. Under the action of the limit slot 306, the guide member 301 and the latch 302 can only move or rotate in the opening direction thereof, thereby avoiding the deviation of the guide member 301 and the latch 302 caused by the influence of external force.

[0029] A positioning block 101 corresponding to the limiting block 305 is provided in the folding portion 1 or the fixing portion 2, a positioning hole 102 is opened on the positioning block 101, and a through hole is opened on the bottom surface of the limiting groove 306. When in the locked state, the latch 302 passes through the through hole and is inserted into the inner side of the positioning hole 102; in the present embodiment, the positioning block 101 is provided in the folding portion 1, and the locking assembly 3 is provided in the fixing portion 2. Through the cooperation between the locking assembly 3 and the positioning block 101, the connection relationship between the folding portion 1 and the fixing portion 2 is adjusted; the diameter of the latch 302 at one end adjacent to the positioning block 101 is smaller than the diameter of the other end, so as to facilitate better insertion into the positioning hole 102; further, in the present embodiment, two latches 302 are provided, and the two latches 302 are respectively on both sides of the limiting block 305. When in the unlocked state, the two latches 302 are both located on the outer side of the positioning hole 102. In the locked state, any one of the two latches 302 is inserted into the inner side of the positioning hole 102.

[0030] The positioning block 101 is a semicircular structural member, and two positioning holes 102 are formed on the positioning block 101. A fan-shaped block 307 is fixedly provided at one end of the limit block 305 adjacent to the positioning block 101. In the locked state, the fan-shaped block 307 fits the positioning block 101, and the latch 302 is plugged into one of the two positioning holes 102. In this embodiment, the fan-shaped block 307 is a fan-shaped structural member with an angular arc of 90°. In other embodiments, the fan-shaped block 307 can be replaced with a fan-shaped block 307 with other angular arcs according to the unfolding requirements of the folding portion 1. Furthermore, in the present embodiment, the state of the locking assembly 3 changes in the order of locked state-unlocked state-locked state under the control of the driving assembly 5. In this order, the relationship between the two latches 302 and the two positioning holes 102 is as follows: one latch 302 is inserted into one positioning hole 102, both latches 302 are located outside the positioning hole 102, and the other latch 302 is inserted into the other positioning hole 102; for the convenience of control, when the state of the locking assembly 3 changes, the driving assembly 5 drives the guide block 304 to rotate 90°, that is, the state of the locking assembly 3 changes once every 90° rotation.

[0031] Specifically, the movement process of the locking assembly 3 is as follows: in the locked state, one side of the sector block 307 is fitted with the positioning block 101, and in the unlocked state, a pin 302 is pulled out from a positioning hole 102, and the folding part 1 rotates under the action of the reset assembly 4, thereby driving the positioning block 101 to rotate until the other side of the sector block 307 is pressed against the positioning block 101. At this time, the positioning block 101 cannot further rotate the folding part 1 to unfold, and the driving assembly 5 drives the guide block 304 to rotate, and the other pin 302 is inserted into the other positioning hole 102 driven by the guide block 304, and the locking assembly 3 becomes a locked state.

[0032] The movement process of the locking assembly 3 proposed in the above embodiment realizes the unfolding and stabilizing functions of the folding portion 1. When the folding portion 1 is unfolded, the fixing function of the folding portion 1 is realized by continuing to rotate the guide block 304. In the above embodiment, the driving assembly 5 can only rotate in one direction. Therefore, the driving assembly 5 can use a smaller and more durable unidirectional motor or other equipment that can achieve unidirectional rotation, which improves the stability of the device and reduces the influence of the wing size on the locking assembly 3.

[0033] The reset assembly 4 includes an elastic member 401 and a receiving block 402. There are two receiving blocks 402. The two receiving blocks 402 are fixedly connected to the folding part 1 and the fixed part 2 respectively. A receiving groove is opened on the two receiving blocks 402. The elastic member 401 is located on the inner side of the receiving groove. The two receiving blocks 402 are driven to rotate relative to each other through the elastic deformation of the elastic member 401; when the elastic member 401 is in a force storage state, the locking assembly 3 is in a locked state. By adjusting the locking assembly 3 to an unlocked state, the movement restriction on the folding part 1 is released. At this time, the rotation between the folding part 1 and the fixed part 2 is not affected. The elastic member 401 releases elastic potential energy and converts it into kinetic energy to drive the relative rotation between the folding part 1 and the fixed part 2 until the folding part 1 reaches the second position.

[0034] In this embodiment, the elastic member 401 is a structural member formed by stacking multiple spring steel sheets. In other embodiments, the elastic member 401 can be an ordinary torsion spring, or other structures or devices that can provide torsional force. The present device realizes the automatic unfolding of the folding portion 1 through the elastic member 401. When the folding portion 1 needs to be refolded, the staff adjusts the locking assembly 3 to the unlocked state, pre-tightens the elastic member 401, adjusts the folding wings to the folded posture, and then adjusts the locking assembly 3 to the locked state.

[0035] In this embodiment, the guide member 301 and the limit block 305 are both structural members made of carbon fiber composite materials, and the remaining structural members in the device are all high-strength aluminum alloys; in other embodiments, the materials can be changed according to specific business needs.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A folding wing locking mechanism, characterized in that: include: A folding portion (1), wherein the folding portion (1) is hingedly connected to the fixing portion (2); A locking assembly (3), in a locked state, the locking assembly (3) limits the folding portion (1), and the folding portion (1) is in a first position or a second position; in an unlocked state, the locking assembly (3) releases the limit on the folding portion (1); A reset assembly (4), which drives the folding portion (1) to move from a first position to a second position along the hinged portion when the locking assembly (3) is in an unlocked state; The locking assembly (3) comprises a guide member (301) and a latch (302); a guide groove (303) is formed on a side wall of the guide member (301); a guide block (304) is provided on the latch (302); the guide block (304) is located inside the guide groove (303); and the latch (302) moves along the direction in which the guide groove (303) is formed, following the guide block (304); When the two ends of the latch (302) are respectively connected to the folding part (1) and the fixing part (2), it is in a locked state; when the latch (302) is only connected to the folding part (1) or the fixing part (2), it is in an unlocked state.

2. A folding wing locking mechanism according to claim 1, characterized in that: A driving assembly (5) is provided at one end of the guide member (301); a power output end of the driving assembly (5) is connected to the guide member (301), and drives the latch (302) to move via the guide member (301).

3. A folding wing locking mechanism according to claim 1, characterized in that: A limiting block (305) is arranged outside the guide member (301), a limiting groove (306) corresponding to the latch (302) is opened in the limiting block (305), and the latch (302) is located in the limiting groove (306) and moves along the opening direction of the limiting groove (306).

4. A folding wing locking mechanism according to claim 3, characterized in that: A positioning block (101) corresponding to the limiting block (305) is arranged in the folding portion (1) or the fixing portion (2); a positioning hole (102) is provided on the positioning block (101); a through hole is provided on the bottom surface of the limiting groove (306); when in a locked state, the latch (302) passes through the through hole and is inserted into the inner side of the positioning hole (102).

5. A folding wing locking mechanism according to claim 4, characterized in that: The positioning block (101) is a semicircular structural member, and two positioning holes (102) are formed on the positioning block (101). A fan-shaped block (307) is fixedly provided at one end of the limit block (305) adjacent to the positioning block (101). In a locked state, the fan-shaped block (307) fits the positioning block (101), and the latch (302) is inserted into one of the two positioning holes (102).

6. A folding wing locking mechanism according to claim 5, characterized in that: The fan-shaped block (307) is a fan-shaped structural member with an angular arc of 90°.

7. The folding wing locking mechanism according to claim 1, characterized in that: The reset assembly (4) comprises an elastic member (401) and a receiving block (402), wherein two receiving blocks (402) are provided, and the two receiving blocks (402) are respectively fixedly connected to the folding portion (1) and the fixing portion (2), and receiving grooves are provided on the two receiving blocks (402). The elastic member (401) is located inside the receiving groove, and the two receiving blocks (402) are driven to rotate relative to each other through the elastic deformation of the elastic member (401).

8. A folding wing locking mechanism according to claim 7, characterized in that: The elastic member (401) is a structural member formed by stacking a plurality of spring steel sheets.

9. A folding wing locking mechanism according to claim 3, characterized in that: The guide member (301) and the limit block (305) are both structural members made of carbon fiber composite materials.

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