Large-angle folding turnover mechanism with double push-pull rods

Abstract

The invention relates to the technical field of mechanical structures, and particularly discloses a large-angle folding turnover mechanism with double push-pull rods, which comprises a connecting part I and a connecting part II, and further comprises a V-shaped lug and two folding assemblies, the connecting part I and the connecting part II are in pivot connection with the corner end of the V-shaped lug, and the folding assemblies are arranged in the V-shaped lug. Wherein one folding assembly is arranged on the first connecting part and hinged to one free end of the V-shaped lug piece, and the other folding assembly is arranged on the second connecting part and hinged to the other free end of the V-shaped lug piece. The driving motor drives the worm to rotate through the driving gear and the driven gear, and the rack is driven to reciprocate through meshing of the worm and the rack, so that the push-pull rod is driven to push the V-shaped lug to rotate around the connecting shaft at the corner end of the V-shaped lug, the second connecting part is driven to turn over relative to the first connecting part, and the turning angle is large.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical structures, and in particular to a large-angle folding and turning mechanism with double push-pull rods. Background Art

[0002] In the fields of aircraft, ships, vehicles, machinery, etc., in order to facilitate driving, transportation, storage, or to arrange more objects in a limited space, a folding and flipping mechanism is needed to reduce the overall floor space or space volume of the object to meet various usage requirements in daily production and life; The flipping mechanism of the prior art mostly realizes the flipping action through a linear drive element, that is, a hydraulic cylinder or a pneumatic cylinder is used as a driving force. According to the structural characteristics of the linear drive element, according to its force application point and the needs of pros and cons, the main body of the linear drive unit is generally installed externally. Although the external installation can achieve a certain angle of flipping, it still affects the space requirement due to the large number of exposed parts. When used on an aircraft, the exposed parts will increase the resistance and generate loud noise, affecting the use effect. In addition, when a hydraulic cylinder or a pneumatic cylinder is used as the driving force, leakage of liquid or gas media is prone to occur during use, causing the flipping mechanism to fail, affecting the reliability and stability of the flipping mechanism.

[0003] Therefore, it is necessary to propose a large-angle folding and flipping mechanism with double push-pull rods to overcome the defects of the prior art. Summary of the invention

[0004] The purpose of the present invention is to solve the problems encountered in the prior art and to provide a large-angle folding and turning mechanism with double push-pull rods.

[0005] The technical solution of the present invention is: A large-angle folding and flipping mechanism with double push-pull rods includes a connecting component one and a connecting component two, and also includes a V-shaped ear piece and a folding assembly. The connecting component one and the connecting component two are pivotally connected to the corner ends of the V-shaped ear piece. Two folding assemblies are provided, one of which is provided on the connecting component one and is hinged to one free end of the V-shaped ear piece, and the other folding assembly is provided on the connecting component two and is hinged to the other free end of the V-shaped ear piece.

[0006] Furthermore, the folding assembly includes a drive motor, a worm gear and a push-pull rod. The drive motor and the worm gear are connected in driving manner. A plurality of racks are evenly distributed axially on the circumference of one end of the push-pull rod. The racks are meshed with the worm gear for transmission. A connecting fork is provided at the other end of the push-pull rod. The connecting fork is hinged to the free end of the V-shaped ear.

[0007] Furthermore, a driving gear is fixedly arranged on the output shaft of the driving motor, a driven gear is coaxially fixedly arranged on one end of the worm, and the driving gear is meshed with the driven gear for transmission.

[0008] Furthermore, the folding assembly also includes a shell, in which a partition is arranged, the partition divides the interior of the shell into a first cavity and a second cavity, the drive motor is arranged in the first cavity, the worm and the driven gear are rotatably arranged in the second cavity, and the output shaft of the drive motor passes through the partition and is connected to the driving gear.

[0009] Furthermore, a first hinge seat is arranged in the middle of the outer wall of one side of the shell, and a second hinge seat matched with the first hinge seat is arranged on both the connecting component 1 and the connecting component 2.

[0010] Furthermore, connecting shafts are provided on both sides of the corner ends of the V-shaped ear piece, a third hinge seat is provided at one end of the connecting component, and a fourth hinge seat is provided at the second end of the connecting component. The third hinge seat is hinged to the fourth hinge seat through the connecting shaft.

[0011] Furthermore, a first through hole and a third through hole are respectively arranged on two side walls of the shell, a fourth through hole is arranged on the partition plate, and the first through hole, the third through hole and the fourth through hole are coaxially arranged.

[0012] Furthermore, the driving motor adopts a waterproof motor.

[0013] Furthermore, a second through hole is provided on the partition, a fifth through hole is provided on the right side wall of the first cavity, the second through hole and the fifth through hole are coaxial, a sixth through hole is provided on the left side wall of the second cavity, and a seventh through hole coaxial with the sixth through hole is provided on the partition.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The driving motor drives the driving gear to rotate, and the driving gear coaxial with the driving motor drives the driven gear coaxial with the worm to rotate, and then the worm and the rack are meshed to drive the rack to reciprocate, thereby driving the push-pull rod to push the V-shaped ear to rotate around the connecting shaft, driving the second connecting part to flip relative to the first connecting part; 2. The two sets of folding components are mutually redundant. When one of the folding components fails or gets stuck, the other folding component can still ensure the basic normal flipping and folding work, with high overall reliability and good redundancy; 3. The two folding components are installed inside the connecting part 1 and the connecting part 2 respectively, without any exposed or protruding parts. When used in aircraft, vehicles or ships, the fluid resistance, noise and vibration are small; 4. The drive motor is used as the power instead of hydraulic or pneumatic power, which eliminates the problems of component wear and liquid or gas leakage. It has high overall reliability, low cost of use, simple and convenient maintenance. The drive motor uses a waterproof motor, has no other electronic components, and has good waterproof performance; 5. The meshing of the worm and rack can form a self-locking mechanism to prevent rapid or uncontrolled rotation due to malfunction or gravity during flipping, which may damage parts or injure or pinch people. The worm and rack mechanism has a large transmission ratio and output force, ensuring overall reliable operation. 6. The special "V" shape of the V-shaped ear piece and the hinged connection structure of the hinged seat make the axis of the push-pull rod farther away from the inner surfaces of the connecting part 1 and the connecting part 2, so that the flipping angle is large, and there will be no interference or dead point during the movement of the flipping mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ; Figure 2 It is a schematic diagram of the structure of the V-shaped ear piece and the folding assembly of the present invention; Figure 3 It is a schematic cross-sectional structural diagram of the folding assembly of the present invention; Figure 4 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ; Figure 5 For the present invention Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0016] Among them, 1. connecting component one; 2. connecting component two; 3. V-shaped ear; 4. driving motor; 5. worm; 6. push-pull rod; 7. rack; 8. connecting fork; 9. driving gear; 10. driven gear; 11. shell; 12. partition; 13. first cavity; 14. second cavity; 15. first through hole; 16. first hinge seat; 17. second hinge seat; 18. connecting shaft; 19. third hinge seat; 20. fourth hinge seat; 21. second through hole; 22. fifth hinge seat; 23. third through hole; 24. fourth through hole; 25. fifth through hole; 26. sixth through hole; 27. seventh through hole. DETAILED DESCRIPTION

[0017] In order to make the technical means, technical features, invention objectives and technical effects achieved by the present invention easy to understand and appreciate, the present invention is further described below with reference to specific illustrations.

[0018] like Figure 1-Figure 5As shown, a large-angle folding and flipping mechanism with double push-pull rods is connected between a connecting component 1 and a connecting component 2, and is used to realize the folding and flipping between the connecting component 1 and the connecting component 2 which are hingedly connected. The mechanism includes a V-shaped ear piece 3 and a folding assembly. The V-shaped ear piece 3 is installed at the position where the connecting component 1 and the connecting component 2 are hinged to each other. Specifically, a third hinge seat 19 is processed at the end of the connecting component 1, and a fourth hinge seat 20 is processed at the end of the connecting component 2. The third hinge seat 19 and the fourth hinge seat 20 are correspondingly plugged. A connecting shaft 18 is installed at the corner end of the V-shaped ear piece 3 in an interference fit manner. The third hinge seat 19 and the fourth hinge seat 20 are connected by a connection. The connecting shafts 18 are hinged to each other to realize the flipping and folding of the connecting component 2 relative to the connecting component 1. The flipping and folding between the connecting component 1 and the connecting component 2 is automatically realized by the folding assembly. There are two folding assemblies, one of which is connected to the connecting component 1, and the other is connected to the connecting component 2. The two folding assemblies are hinged to the two free ends of the V-shaped ear piece 3 respectively. When working normally, the two folding assemblies work at the same time to drive the connecting component 2 to flip and fold relative to the connecting component 1. When one of the folding assemblies fails, the other folding assembly can still work independently to ensure the normal flipping movement and improve the reliability of the folding mechanism.

[0019] like Figure 1-Figure 4As shown, the folding assembly includes a driving motor 4, a worm 5, a push-pull rod 6 and a shell 11. The shell 11 is a box assembly, which becomes a hollow structure after assembly. A partition 12 is processed inside the shell 11, and the partition 12 divides the hollow shell 11 into a first cavity 13 and a second cavity 14. The driving motor 4 is installed in the first cavity 13. The driving motor 4 can be a waterproof motor with good overall waterproof performance. The driving motor 4 is used as the driving force instead of hydraulic or air pressure as the power, which avoids the problems of component wear and fluid leakage. The overall reliability is high, the cost is low, and the maintenance is simple and convenient. The worm 5 is installed in the second cavity 14. Specifically, a sixth cavity 14 is processed on the left side wall of the second cavity 14. The through hole 26 is provided on the partition plate 12, and a seventh through hole 27 is processed on the partition plate 12. The sixth through hole 26 and the seventh through hole 27 are coaxial. Both ends of the worm 5 are rotatably connected in the sixth through hole 26 and the seventh through hole 27, so that the worm 5 can rotate relative to the housing 11. The driving motor 4 is connected to the worm 5 in a transmission manner. In this embodiment, the transmission mode between the driving motor 4 and the worm 5 is a gear transmission mode, that is, a driving gear 9 is fixedly installed on the output shaft of the driving motor 4, and one end of the worm 5 is coaxially fixedly connected to a driven gear 10, and the driving gear 9 and the driven gear 10 are meshed. The driving gear 9 and the driven gear 10 are both located in the second cavity 14, and the diameter of the driving gear 9 is smaller than the diameter of the driven gear 10. In order to realize the reduction transmission and increase the torque on the driven gear 10, a second through hole 21 for the output shaft of the driving motor 4 to pass through is processed on the partition 12, and the output shaft of the driving motor 4 passes through the second through hole 21 and is connected to the driving gear 9 located in the second cavity 14. A fifth through hole 25 is processed on the right side wall of the first cavity 13, and the fifth through hole 25 is coaxial with the second through hole 21. The output shaft of the driving motor 4 away from the driving gear 9 can be rotatably connected in the fifth through hole 25. The first through hole 15 and the third through hole 23 are also processed on the two side walls of the shell 11, respectively. A fourth through hole 24 is processed on the partition 12, and the first through hole 15, the third through hole 23 and the fourth through hole 24 are coaxial. One end of the push-pull rod 6 penetrates and is connected in the first through hole 15, the third through hole 23 and the fourth through hole 24, and can reciprocate in the first through hole 15, the third through hole 23 and the fourth through hole 24 relative to the housing 11. The end of the push-pull rod 6 inserted into and connected in the housing 11 is connected to the rack 7, and the rack 7 is meshed with the worm 5 for transmission. The driving motor 4 drives the worm 5 to rotate through the meshing of the driving gear 9 and the driven gear 10, and the reciprocating movement of the push-pull rod 6 relative to the housing 11 is achieved through the meshing of the worm 5 and the rack 7. The end of the push-pull rod 6 away from the housing 11 is connected to a connecting fork 8, and the connecting fork 8 is hinged to the free end of the V-shaped ear piece 3. The connecting fork 8 and the push-pull rod 6 are connected by threads or radial pins. The rack 7 can be made of high-strength and high-rigidity materials and lubricated with lubricating materials to significantly reduce friction. It can also be made of self-lubricating materials such as polytetrafluoroethylene or graphite cast iron, which does not require additional lubricating materials and can significantly reduce friction. It is also clean and tidy without odor. During use, the worm 5 and the rack 7 can achieve self-locking to prevent rapid or uncontrolled movement due to malfunction or gravity during the flipping process, which may cause accidents such as damage to parts or injuries to people, thereby improving safety and reliability in daily use. The transmission method of the meshing of the worm 5 and the rack 7 has a large transmission ratio and a large output force. When the folding component moves to a position with greater force such as near the dead point, the normal movement of the folding mechanism can still be guaranteed.

[0020] like Figure 1-Figure 3 and Figure 5 As shown, a first hinge seat 16 is processed in the middle of the outer wall on one side of the shell 11, which is used to connect with the connecting part 1 and the connecting part 2 respectively. Correspondingly, a second hinge seat 17 is processed inside the connecting part 1, and a fifth hinge seat 22 is processed inside the connecting part 2. The two folding components are pivotally connected to the connecting parts 1 and 2 through the first hinge seat 16, the second hinge seat 17 and the fifth hinge seat 22 on their respective shells 11, and are respectively connected to the inside of the connecting part 1 and the connecting part 2. After installation, there are no parts exposed or protruding to the outside, the noise and vibration during operation are small, and the fluid resistance is small. Through the hinge connection of the first hinge seat 16 with the second hinge seat 17 and the fifth hinge seat 22, and the hinge connection of the push-pull rod 6 with the V-shaped ear piece 3, the push-pull rod 6 can avoid the dead point during the movement, thereby ensuring the normal movement of the mechanism.

[0021] The working principle of the present invention is: When in use, the two groups of folding components are respectively installed in the connecting component 1 and the connecting component 2 2, and the connecting component 1 1 and the connecting component 2 2 are pivotally connected through the third hinge seat 19 and the fourth hinge seat 20 and the connecting shaft 18 of the V-shaped ear piece 3. During normal operation, the driving motor 4 of one of the folding components drives the worm 5 to rotate through the meshing transmission of the active gear 9 and the driven gear 10, and drives the rack 7 through the meshing of the worm 5 and the rack 7, and drives the push-pull rod 6 to extend in the direction of the V-shaped ear piece 3, thereby pushing the V-shaped ear piece 3; at the same time, the driving motor 4 of the other folding component drives the push-pull rod 6 of the folding component to extend and push the V-shaped ear piece 3, so that the connecting component 2 2 can rotate relative to each other. The flipping action of connecting component 1 realizes the opening of connecting component 2 2 relative to connecting component 1; correspondingly, when the two groups of folding components simultaneously perform actions opposite to the aforementioned movement direction, the contraction and closure of the mechanism can be realized, that is, the lower end surfaces of connecting component 1 and connecting component 2 are tightly attached together to realize the closed connection of the two components; due to the joint action of the two groups of folding components, the flipping angle between connecting component 1 and connecting component 2 is very large, reaching 160 degrees. When a single-point failure occurs in the folding mechanism, that is, when one of the folding components fails or gets stuck and cannot operate normally, the other folding component can still maintain normal operation, thereby ensuring the normal flipping movement of the entire mechanism.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention should belong to the technical scope of the present invention.

Claims

1. A large-angle folding and flipping mechanism with double push-pull rods, characterized in that: The invention comprises a connecting component 1 (1) and a connecting component 2 (2), and also comprises a V-shaped ear piece (3) and a folding assembly, wherein the connecting component 1 (1) and the connecting component 2 (2) are pivotally connected to the corner end of the V-shaped ear piece (3), and the folding assembly is provided in two, wherein one of the folding assemblies is provided on the connecting component 1 (1) and is hinged to one free end of the V-shaped ear piece (3), and the other folding assembly is provided on the connecting component 2 (2) and is hinged to the other free end of the V-shaped ear piece (3).

2. The large-angle folding and turning mechanism with double push-pull rods according to claim 1 is characterized in that: The folding assembly comprises a driving motor (4), a worm (5) and a push-pull rod (6); the driving motor (4) and the worm (5) are drivingly connected; one end of the push-pull rod (6) is provided with a rack (7), the rack (7) meshing with the worm (5) for transmission; the other end of the push-pull rod (6) is provided with a connecting fork (8), and the connecting fork (8) is hinged to the free end of the V-shaped ear piece (3).

3. The large-angle folding and turning mechanism with double push-pull rods according to claim 2 is characterized in that: A driving gear (9) is fixedly arranged on the output shaft of the driving motor (4), and a driven gear (10) is coaxially fixedly arranged on one end of the worm (5), and the driving gear (9) and the driven gear (10) are meshed for transmission.

4. The large-angle folding and turning mechanism with double push-pull rods according to claim 3 is characterized in that: The folding assembly further comprises a housing (11), wherein a partition (12) is arranged in the housing (11), wherein the partition (12) divides the interior of the housing (11) into a first cavity (13) and a second cavity (14), wherein the drive motor (4) is arranged in the first cavity (13), and the worm (5) and the driving gear (9) and the driven gear (10) are rotatably arranged in the second cavity (14), and the output shaft of the drive motor (4) passes through the partition (12) and is connected to the driving gear (9).

5. The large-angle folding and turning mechanism with double push-pull rods according to claim 4 is characterized in that: A first hinge seat (16) is provided in the middle of the outer wall of one side of the shell (11), a second hinge seat (17) is provided on the connecting component one (1), and a fifth hinge seat (22) is provided on the connecting component two (2).

6. The large-angle folding and turning mechanism with double push-pull rods according to claim 1 is characterized in that: A connecting shaft (18) is provided on both sides of the corner end of the V-shaped ear piece (3); a third hinge seat (19) is provided at the end of the first connecting part (1); a fourth hinge seat (20) is provided at the end of the second connecting part (2); and the third hinge seat (19) is hingedly connected to the fourth hinge seat (20) via the connecting shaft (18).

7. The large-angle folding and turning mechanism with double push-pull rods according to claim 4 is characterized in that: A first through hole (15) and a third through hole (23) are respectively provided on the two side walls of the shell (11), a fourth through hole (24) is provided on the partition plate (12), and the first through hole (15), the third through hole (23) and the fourth through hole (24) are coaxially arranged.

8. The large-angle folding and turning mechanism with double push-pull rods according to claim 2 is characterized in that: The driving motor (4) is a waterproof motor.

9. The large-angle folding and turning mechanism with double push-pull rods according to claim 4, characterized in that: The partition plate (12) is provided with a second through hole (21), the right side wall of the first cavity (13) is provided with a fifth through hole (25), the second through hole (21) and the fifth through hole (25) are coaxial, the left side wall of the second cavity (14) is provided with a sixth through hole (26), and the partition plate (12) is provided with a seventh through hole (27) coaxial with the sixth through hole (26).

Images