A folding wing locking mechanism

Abstract

The present invention provides a folding wing locking mechanism, comprising: a folding part, the folding part is hinged to a fixed part; a locking assembly, in a locked state, the locking assembly limits the folding part, and the folding part is in a first position or a second position; in an unlocked state, the locking assembly releases the limit on the folding part; a reset assembly, when the locking assembly is in the unlocked state, the reset assembly drives the folding part to move from the first position to the second position along the hinge part. Advantageous effects of the present invention: The structure of the present invention is simple and highly reliable, and can eliminate the impact load during the unfolding process of the folding wing, so as to better control the flight trajectory. This mechanism also has the functions of automatic unfolding and maintaining the unfolded state and automatic folding.

Description

Technical Field

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

[0002] When aircraft, rockets, missiles and other aircraft fly in the atmosphere, air rudders are mostly used as the actuating components for attitude control. In order to increase the control force, it is necessary to increase the size of the air rudders. In order to reduce the storage space, it is necessary to reduce the size of the air rudders, which leads to a contradiction.

[0003] At present, most folding wing rudder structures rely on manual folding and are kept folded by being pressed against the inner wall of their outer packing cylinders. After being taken out of the box, they are unfolded by the force of torsion springs, and an impact force will be generated on the projectile during the unfolding process, affecting the flight trajectory. Some mechanisms driven by hydraulic cylinders can be used automatically and repeatedly, but they are large in size and cannot be placed in small wing rudder structures, which will damage the aerodynamic shape. Summary of the Invention

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

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] A folding wing locking mechanism, comprising:

[0007] A folding part, which is hinged to a fixed part;

[0008] A locking assembly, in the locked state, the locking assembly limits the folding part, and the folding part is in the first position or the second position; in the unlocked state, the locking assembly releases the limit on the folding part;

[0009] A reset assembly, when the locking assembly is in the unlocked state, the reset assembly drives the folding part to move from the first position to the second position along the hinge part.

[0010] Further, the locking assembly includes a guide member and a pin. A guide groove is formed on the side wall of the guide member, and a guide block is provided on the pin. The guide block is located inside the guide groove, and the pin moves along the opening direction of the guide groove following the guide block;

[0011] When both ends of the pin are respectively connected to the folding part and the fixed part, it is in the locked state. When the pin is only connected to the folding part or the fixed part, it is in the unlocked state.

[0012] Further, one end of the guide member is provided with a driving assembly, and the power output end of the driving assembly is connected to the guide member and drives the pin to move through the guide member.

[0013] Furthermore, a limiting block is arranged outside the guiding member. A limiting groove corresponding to the bolt is formed in the limiting block. The bolt is located in the limiting groove and moves along the opening direction of the limiting groove.

[0014] Furthermore, a positioning block corresponding to the limiting block is arranged in the folding part or the fixing part. A positioning hole is formed in the positioning block, and a through hole is formed in the bottom surface of the limiting groove. When in the locked state, the bolt penetrates through the through hole and is inserted into the inner side of the positioning hole.

[0015] Furthermore, the positioning block is a semi-circular structural member. Two positioning holes are formed in the positioning block. A sector block is fixedly arranged at one end of the limiting block close to the positioning block. In the locked state, the sector block is attached to the positioning block, and the bolt is inserted into one of the two positioning holes.

[0016] Furthermore, the sector block is a sector structural member with a central angle of 90°.

[0017] 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 fixing part. Receiving grooves are formed in both receiving blocks. The elastic member is located inside the receiving groove, and the elastic deformation of the elastic member drives the two receiving blocks to rotate relative to each other.

[0018] Furthermore, the elastic member is a structural member formed by stacking a plurality of spring steel sheets.

[0019] Furthermore, both the guiding member and the limiting block are structural members made of carbon fiber composite materials.

[0020] Compared with the prior art, the folding wing locking mechanism of the present invention has the following beneficial effects: simple structure, high reliability, can eliminate the impact load during the unfolding process of the folding wing, so as to better control the flight trajectory, and the mechanism also has the functions of automatic unfolding and maintaining the unfolded state and automatic folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of the folding wing locking mechanism according to an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of the structure of the folding part according to an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of the structure of the fixing part according to an embodiment of the present invention;

[0025] Figure 4 Schematic partial structure diagram of the guide member according to an embodiment of the present invention;

[0026] Figure 5 Schematic partial structure diagram of the limit block according to an embodiment of the present invention;

[0027] Figure 6 Schematic structure diagram of the reset assembly according to an embodiment of the present invention;

[0028] Figure 7 Schematic exploded structure diagram of the locking assembly and the folding part according to an embodiment of the present invention;

[0029] Figure 8 Schematic cross-sectional structure diagram of the limit block according to an embodiment of the present invention.

[0030] Explanation of reference numerals: 1. Folding part; 101. Positioning block; 102. Positioning hole; 2. Fixed part; 3. Locking assembly; 301. Guide member; 302. Plug; 303. Guide groove; 304. Guide block; 305. Limit block; 306. Limit groove; 307. Sector block; 4. Reset assembly; 401. Elastic member; 402. Bearing block; 5. Driving assembly. Detailed implementation manners

[0031] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0035] As Figures 1 - 6 shown: A folding wing locking mechanism includes:

[0036] A folding part 1, and the folding part 1 is hinged to a fixed part 2;

[0037] A locking assembly 3, in the locked state, the locking assembly 3 limits the folding part 1, and the folding part 1 is in the first position or the second position; in the unlocked state, the locking assembly 3 releases the limit on the folding part 1;

[0038] A reset assembly 4, when the locking assembly 3 is in the unlocked state, the reset assembly 4 drives the folding part 1 to move from the first position to the second position along the hinge part.

[0039] The folding wing of the flying device is divided into a foldable folding part 1 and a fixed part 2 fixedly connected to the fuselage. When the flying device is in the state of being transported or waiting to be launched, the folding part 1 is in the folded state. When the flying device is launched, the folding part 1 is in the unfolded state for flight; the above-mentioned first position is the position where the folding part 1 is located in the folded state, and the second position is the position of the folding part 1 in the unfolded state; in this embodiment: the second position is the relative position between the folding part 1 and the fixed part 2 when the folding part 1 is parallel to the fixed part 2, and the first position is the relative position between the folding part 1 and the fixed part 2 in other cases. Specifically, in the first position, the folding part 1 is in a folded posture and forms an angle of 90° with the fixed part 2, and in the second position, the folding part 1 is in an unfolded posture and forms an angle of 180° with the fixed part 2.

[0040] By folding the wing, the convenient transportation of the flying device is realized, and the adaptability of its launch window is wider. After launch, the staff can adjust the state of the folding wing through the locking assembly 3 and make the folding wing automatically unfold through the reset assembly 4.

[0041] The locking assembly 3 includes a guide member 301 and a bolt 302. A guide groove 303 is formed on the side wall of the guide member 301. A guide block 304 is provided on the bolt 302. The guide block 304 is located inside the guide groove 303, and the bolt 302 moves along the opening direction of the guide groove 303 following the guide block 304;

[0042] When the two ends of the bolt 302 are respectively connected to the folding part 1 and the fixing part 2, it is in the locked state. When the bolt 302 is only connected to the folding part 1 or the fixing part 2, it is in the unlocked state.

[0043] In this embodiment, the guide member 301 is a columnar structural member, the guide groove 303 is an elliptical track surrounding the outer side 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 bolt 302 makes a reciprocating motion every half turn of the guide member 301. Through the single-direction rotation of the guide member 301, the continuous reciprocating motion of the bolt 302 is realized, so as to realize the function of the locking assembly 3 changing from the locked state to the unlocked state and then back to the locked state; in some other embodiments, the guide member 301 can be replaced by other structures that can drive the bolt 302 to realize reciprocating motion.

[0044] One end of the guide member 301 is provided with a driving assembly 5. The power output end of the driving assembly 5 is connected to the guide member 301 and drives the bolt 302 to move through the guide member 301; in this embodiment, the driving assembly 5 is a small motor; in some other embodiments, the driving assembly 5 can be replaced with a magnetic switch, a servo motor, a cylinder, etc. that can realize driving the bolt 302 to move. It should be noted that when the driving assembly 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 bolt 302 to realize the reciprocating motion of the bolt 302.

[0045] A limiting block 305 is arranged outside the guide member 301, and a limiting groove 306 corresponding to the bolt 302 is opened in the limiting block 305. The bolt 302 is located in the limiting groove 306 and moves along the opening direction of the limiting groove 306; under the action of the limiting groove 306, the guide member 301 and the bolt 302 can only move or rotate in its opening direction, avoiding the deviation of the guide member 301 and the bolt 302 caused by external force.

[0046] A positioning block 101 corresponding to the limiting block 305 is arranged in the folding part 1 or the fixing part 2. A positioning hole 102 is formed in the positioning block 101, and a through hole is formed in the bottom surface of the limiting groove 306. When in the locked state, the insertion pin 302 passes through the through hole and is inserted into the inner side of the positioning hole 102. In this embodiment, the positioning block 101 is arranged in the folding part 1, and the locking assembly 3 is arranged in the fixing part 2. The connection relationship between the folding part 1 and the fixing part 2 is adjusted through the cooperation between the locking assembly 3 and the positioning block 101. The diameter of the end of the insertion pin 302 close to the positioning block 101 is smaller than that of the other end, which is convenient for better insertion into the positioning hole 102. Further, in this embodiment, two insertion pins 302 are provided, and the two insertion pins 302 are respectively located on both sides of the limiting block 305. When in the unlocked state, both insertion pins 302 are located outside the positioning hole 102. When in the locked state, any one of the two insertion pins 302 is inserted into the inner side of the positioning hole 102.

[0047] The positioning block 101 is a semi-circular structural member. Two positioning holes 102 are formed in the positioning block 101. A sector block 307 is fixedly arranged at one end of the limiting block 305 close to the positioning block 101. When in the locked state, the sector block 307 is attached to the positioning block 101, and the insertion pin 302 is inserted into one of the two positioning holes 102. In this embodiment, the sector block 307 is a sector structural member with an angular radian of 90°. In other embodiments, the sector block 307 can be replaced with sector blocks with other angular radians according to the unfolding requirements of the folding part 1.

[0048] Further, in this 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 insertion pins 302 and the two positioning holes 102 is as follows: one insertion pin 302 is inserted into one positioning hole 102, both insertion pins 302 are located outside the positioning hole 102, and the other insertion pin 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 guiding block 304 to rotate 90°, that is, the state of the locking assembly 3 changes once every 90° rotation.

[0049] Specifically, the movement process of the locking assembly 3 is as follows: One side of the sector block 307 is attached to the positioning block 101 in the locked state. One insertion pin 302 is pulled out from one positioning hole 102 in the unlocked state. 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 abuts against the positioning block 101. At this time, the positioning block 101 cannot further rotate to unfold the folding part 1. The driving assembly 5 drives the guiding block 304 to rotate, and the other insertion pin 302 is driven by the guiding block 304 to be inserted into the other positioning hole 102, and the locking assembly 3 becomes the locked state.

[0050] The movement process of the locking assembly 3 proposed in the above embodiments realizes the unfolding and stabilizing functions of the folding part 1. When the folding part 1 is unfolded, by continuously rotating the guiding block 304, the fixing function of the folding part 1 is realized. In the above embodiments, the driving assembly 5 can only rotate in one direction. Therefore, the driving assembly 5 can select a smaller and more durable one-way motor or other devices that can realize one-way rotation, improving the stability of the device and reducing the influence of the wing size on the locking assembly 3.

[0051] The reset assembly 4 includes an elastic member 401 and a receiving block 402. There are two receiving blocks 402, and the two receiving blocks 402 are respectively fixedly connected to the folding part 1 and the fixing part 2. Receiving grooves are formed on both of the two receiving blocks 402. The elastic member 401 is located inside the receiving groove, and the elastic deformation of the elastic member 401 drives the two receiving blocks 402 to rotate relative to each other; when the elastic member 401 is in a state of storing energy, 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 fixing part 2 is not affected. The elastic member 401 releases its elastic potential energy and converts it into kinetic energy to drive the relative rotation between the folding part 1 and the fixing part 2 until the folding part 1 reaches the second position.

[0052] In this embodiment, the elastic member 401 is a structural member formed by stacking multiple spring steel sheets. In some other embodiments, the elastic member 401 can be an ordinary torsion spring, or other structures or devices that can provide torsional force; the device realizes the automatic unfolding of the folding part 1 through the elastic member 401. When it is necessary to refold the folding part 1, the staff adjusts the locking assembly 3 to the unlocked state, pre-tightens the elastic member 401, adjusts the folding wing to the folding posture, and then adjusts the locking assembly 3 to the locked state.

[0053] In this embodiment, both the guiding member 301 and the limiting block 305 are structural members made of carbon fiber composite materials, and the remaining structural members in the device are all made of high-strength aluminum alloy; in some other embodiments, their materials can be changed according to specific business needs.

[0054] 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 foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present practical embodiments, and they should all be covered within the scope of the claims and the description of the present invention.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A folding wing locking mechanism, characterized in that, It comprises a folding portion (1), a fixing portion (2), a locking component (3) and a resetting component (4), The folding part (1) and the fixing part (2) are hinged. A reset component (4), which drives the folding portion to move from a first position to a second position along the intersection portion when the locking component is in an unlocked state; The locking assembly (3) comprises a guide member (301), a limit block (305) and a latch (302); the limit block (305) is sleeved on the outside of the guide member (301); a guide groove (303) is formed on the side wall of the guide member (301); a guide block (304) is formed 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); A positioning block (101) corresponding to the limiting block (305) is arranged in the folding portion (1) or the fixing portion (2); two positioning holes (102) are formed on the positioning block (101); a through hole is formed on the bottom surface of the limiting block; 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); the positioning block (101) is a semicircular structural member; a fan-shaped block (307) is fixedly arranged on the bottom surface of the limiting block (305) near one end of the positioning block (101); and in the locked state, one side of the fan-shaped block (307) is in contact with the positioning block (101). The two folding members (307) are fitted together, and in the unlocked state, one latch (302) is pulled out of one positioning hole (102), and the folding portion (1) rotates under the action of the resetting assembly (4), thereby driving the positioning block (101) to rotate until the other side of the fan-shaped block (307) presses against the positioning block (101), at which time the positioning block (101) cannot be further rotated to unfold the folding portion (1), and the driving assembly (5) drives the guide block (304) to rotate, and the other latch (302) is inserted into the other positioning hole (102) driven by the guide block (304), and the locking assembly (3) changes to a locked 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: The limiting block (305) is provided with a limiting groove (306) corresponding to the latch (302); the latch (302) is located in the limiting groove (306) and moves along the direction in which the limiting groove (306) is opened.

4. A folding wing locking mechanism according to claim 1, wherein The fan-shaped block (307) is a fan-shaped structural member with an angular arc of 90°.

5. The folding wing locking mechanism according to claim 1, characterized in that: The reset assembly (4) includes an elastic member (401) and a receiving block (402). There are two receiving blocks (402), which are respectively fixedly connected to the folding part (1) and the fixed part (2). Receiving grooves are formed on both of the two receiving blocks (402). The elastic member (401) is located inside the receiving groove, and the elastic deformation of the elastic member (401) drives the two receiving blocks (402) to rotate relative to each other.

6. The folding wing locking mechanism according to claim 5, characterized in that, The elastic member (401) is a structural member formed by stacking a plurality of spring steel sheets.

7. A folding wing locking mechanism according to claim 1, characterized in that, Both the guiding member (301) and the limiting block (305) are structural members made of carbon fiber composite materials.

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