Triangular plate folding mechanism

Abstract

The invention discloses a triangular plate folding mechanism which comprises a rectangular bottom box and a control mechanism arranged in the bottom box, and the control mechanism is used for controlling the folding mechanism to be unfolded or folded in the bottom box; the folding mechanism comprises a plurality of triangular plates which are sequentially hinged together in an end-to-end mode through hinge pieces, one sides of the first triangular plate and the second triangular plate are hinged to the wall face of the bottom box, and the control mechanism is connected with one hinge piece and controls the hinge piece to move. A plurality of triangular plates are hinged through the forward and reverse hinges, the symmetrically-arranged Z-shaped connecting rods are used for driving and controlling through the single driving motor, the triangular plates are unfolded into an integral plate and can be folded in the bottom box, and the folding proportion is increased while the control efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical folding, and in particular to a triangular plate folding mechanism. Background Art

[0002] As the urban population increases, living space becomes increasingly tight, and how to improve the utilization efficiency of urban space has become an urgent issue to consider. For flat-shaped objects such as solar panels, the use of efficient and simple folding mechanisms can significantly solve the problem of large usage area and complex installation and disassembly.

[0003] In the prior art, the folding mechanism, also known as a foldable mechanism or a deployable structure, has a core feature of its foldability. This mechanism can be quickly unfolded to provide the required function or space when needed, and can be conveniently folded up when not needed to save space, facilitate transportation and storage. Folding mechanisms are widely used in many fields, such as temporary structures such as foldable buildings, construction sheds, market sheds, temporary warehouses, etc. This structure is not only easy to build and dismantle, but also effectively saves space and costs. In the field of aerospace, the folding mechanism has an irreplaceable position. It has been used as components such as solar sails and deployable antennas, which greatly facilitates the design and manufacture of spacecraft. Or, in the field of solar photovoltaics, the expansion and contraction of solar photovoltaic panels will also use folding mechanisms.

[0004] This type of folding mechanism is usually composed of multiple layers of thin plates, which are connected by hinges or other connectors. Folding plates are portable, easy to store, and convenient to transport. They are widely used in home furnishing, construction, logistics, exhibitions, advertising and other fields. Their development direction is mainly to further improve the folding ratio of the product, compress the space occupied, or further improve the control performance of the product. However, in some existing folding mechanisms, the control mechanism is complex and requires multiple sets of control components to achieve unfolding. For example, the Chinese patent with application number "CN201811233599.8" specifically discloses "a fan-shaped plate folding mechanism", which realizes a fan-shaped plate folding mechanism with a folding ratio of one to six, which can make full use of the space to a great extent, but on the other hand, it also needs to manually fold or unfold part of the fan-shaped plate during the folding or unfolding process, and the control method is complicated. Summary of the invention

[0005] The purpose of the present invention is to provide a triangular plate folding mechanism, which aims to hinge multiple triangular plates at the head and tail through front and back hinges, and to control the Z-shaped connecting rod to unfold the multiple triangular plates into an integral plate or fold them into a bottom box through a single motor control drive, so as to improve the control efficiency and the folding ratio.

[0006] To achieve the above object, the present invention provides the following technical solutions: A triangular plate folding mechanism comprises a rectangular bottom box and a control mechanism arranged in the bottom box, wherein the control mechanism is used to control the folding mechanism to be opened or folded in the bottom box; The folding mechanism comprises a plurality of triangular plates hinged together end to end in sequence through hinges, wherein one side of the first and last triangular plates is hinged to the wall of the bottom box, and the control mechanism is connected to one of the hinges and controls its movement.

[0007] In a specific embodiment, the control mechanism includes a drive motor, a worm gear arranged on the output shaft of the drive motor, a worm wheel matching the worm gear is arranged in the base box, a Z-shaped connecting rod is arranged on the worm wheel, and the other end of the Z-shaped connecting rod is connected to a hinge, so that the folding of the triangular plate is achieved by controlling the movement of the hinge.

[0008] In a specific embodiment, the worm wheel is an incomplete worm wheel, and the length of the outer arc of the worm wheel is equal to three quarters of the outer circumference of the worm wheel.

[0009] In a specific embodiment, the Z-shaped connecting rod includes a straight rod and an L-shaped short rod, one end of the L-shaped short rod is fixedly connected to the end face of the worm gear, and the other end is fixedly connected to one end of the straight rod, and the other end of the straight rod away from the worm gear is connected to a hinge, so only one straight rod is needed to realize the folding of all triangular plates.

[0010] In a specific embodiment, the hinge is a hinge, and the hinge includes a positive hinge and a reverse hinge, and the positive hinge and the reverse hinge are alternately installed on the triangular plate.

[0011] In a specific embodiment, the folding angles of the forward-mounted hinge and the reverse-mounted hinge are both 180°, and the forward-mounted hinge and the reverse-mounted hinge are alternately used between the triangular plates to form a fold between the triangular plates.

[0012] In a specific embodiment, the shape of the triangular plate is an isosceles right triangle, and through the coordination of the long side and the right-angled side of the isosceles right triangle, all the triangular plates form a square plane after being unfolded.

[0013] In a specific embodiment, one end of the first and last triangular plates are hinged to the bottom box through a first fixed hinge and a second fixed hinge respectively; the folding angles of the first and second fixed hinges are both 90°, so that the first and last triangular plates can be folded vertically and horizontally on the bottom box.

[0014] In a specific embodiment, the first and last triangular plates are symmetrically distributed about the Z-shaped connecting rod, so the folding of all the triangular plates can be achieved by controlling only one of the hinges through the Z-shaped connecting rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention has a compact structure, high space utilization efficiency, and convenient installation and disassembly. It adopts a symmetrical design, and 8 isosceles right-angled triangle plates can be unfolded into a square plate at the same time, and the unfolded plate area is 8 times that of the folded plate.

[0016] 2. The present invention adopts a single motor drive and combines a Z-shaped connecting rod to drive the hinge to move. Its driving method is simple and the folding ratio is high. Only one driving motor is needed to realize the folding and unfolding of the present invention, and the driving and control methods are greatly simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the top view of the folding mechanism of the present invention in the unfolded state; Figure 2 It is a cross-sectional structural schematic diagram of the unfolded state of the folding mechanism of the present invention; Figure 3 It is a structural schematic diagram of the folding mechanism and the control mechanism of the present invention (without the bottom box); Figure 4 This is a structural diagram of the folding mechanism of the present invention in a folded state (with a bottom box) Figure 5 It is a structural schematic diagram of the folding mechanism of the present invention during the unfolding process; Figure 6 is a schematic diagram of the control mechanism of the present invention; Figure 7 It is a structural schematic diagram of a forward-mounted hinge or a reverse-mounted hinge of the present invention.

[0018] As shown in the figure: 1. Bottom box; 2. First folding triangle plate; 3. First normal hinge; 4. Second folding triangle plate; 5. First reverse hinge; 6. Z-shaped connecting rod; 7. Driving motor; 8. Motor bracket; 9. Worm; 10. Worm wheel; 11. First hinge piece; 12. Second hinge piece; 13. Third folding triangle plate; 14. First fixed hinge; 15. Eighth folding triangle plate; 16. Fourth folding triangle plate; 17. Fifth folding triangle plate; 18. Linked reverse hinge; 19. Fixed shaft; 20. Second fixed hinge; 21. Sixth folding triangle plate; 22. Seventh folding triangle plate; 23. Second normal hinge; 24. Third normal hinge; 25. Third reverse hinge; 26. Fourth normal hinge; 61. Straight rod; 62. L-shaped short rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 7 A triangular plate folding mechanism comprises a rectangular bottom box 1 and a control mechanism arranged in the bottom box 1, wherein the control mechanism is used to control the folding mechanism to be opened or folded in the bottom box 1.

[0021] The folding mechanism comprises a plurality of triangular plates hinged together end to end in sequence through hinges, wherein one side of the first and last triangular plates is hinged to the wall of the bottom box 1, and the control mechanism is connected to one of the hinges and controls its movement.

[0022] Specifically, like Figure 6 As shown, the control mechanism includes a driving motor 7, and the driving motor 7 is fixed to the bottom surface of the bottom box 1 through an L-shaped motor bracket 8. A worm 9 is installed on the output shaft of the driving motor 7. A worm wheel 10 matching the worm 9 is provided in the bottom box 1, and a bearing is provided in the center of the worm wheel 10, and a fixed shaft 19 is rotatably connected to the bearing. The two ends of the fixed shaft 19 are fixed to the wall surfaces on both sides of the bottom box 1, and the worm wheel 10 can rotate on the fixed shaft 19. The worm wheel 10 is meshed with the worm 9, and the worm 9 drives the worm wheel 10 to rotate. A Z-shaped connecting rod 6 is provided on the worm wheel 10 in the bottom box 1, and the other end of the Z-shaped connecting rod 6 is connected to the hinge, and the movement of other triangular plates is driven by controlling the movement of the hinge.

[0023] The Z-shaped connecting rod 6 includes a straight rod 61 and an L-shaped short rod 62, one end of the L-shaped short rod 62 is connected to the worm gear 10, and the other end is fixedly connected to one end of the straight rod 61, and the other end of the straight rod 61 is connected to the linkage reverse hinge 18. The straight rod 61 and the L-shaped short rod 62 are an integrated structure. When the control driving motor 7 rotates, the worm 9 drives the worm gear 10 to rotate, and the end of the straight rod 61 away from the worm gear 10 is tilted with the rotation of the worm gear and rotates with the worm gear 10 as the center, so that the straight rod 61 drives the linkage reverse hinge 18 to move up and down along an arc trajectory to realize the folding of the triangular plate. After the triangular plate is fully unfolded or folded, the straight rod 61 is in a horizontal posture.

[0024] like Figure 6As shown, the worm wheel 10 is an incomplete worm wheel, and the length of the outer arc of the worm wheel 10 is equal to three quarters of its outer circumference. One end of the L-shaped short rod 62 is fixed at the center of the side end surface of the turbine 10. When the worm wheel 10 rotates, the end of the straight rod 61 away from the worm wheel 10 rotates with the worm wheel 10 as the center in a semicircular trajectory.

[0025] like Figure 1-Figure 2 As shown, the triangular plate is in the shape of an isosceles right triangle, including a first folding triangle plate 2, a second folding triangle plate 4, a third folding triangle plate 13, a fourth folding triangle plate 16, a fifth folding triangle plate 17, a sixth folding triangle plate 21, a seventh folding triangle plate 22, and an eighth folding triangle plate 15 connected in sequence by hinges. The other sides of the first folding triangle plate 2 and the eighth folding triangle plate 15 are hinged on the inner wall of the bottom box 1.

[0026] The first folding triangle 2 and the eighth folding triangle 15 are rotatably connected to the inner walls of the two sides of the bottom box 1 through the first fixed hinge 14 and the second fixed hinge 20 respectively. The folding angles of the first fixed hinge 14 and the second fixed hinge 20 are both 90°. The long side of the first folding triangle 2 is hinged to the long side of the second folding triangle 4, and the long side of the eighth folding triangle 15 is hinged to the long side of the seventh folding triangle 7. The first folding triangle 2 and the eighth folding triangle 15 can be placed horizontally or vertically in the bottom box 1 by folding, such as Figure 3-Figure 4 After unfolding, a whole plate is formed, and all the unfolded folded triangular plates remain parallel to the upper end surface of the bottom box 1, achieving maximum space utilization. After the shrinkage and folding are completed, all the triangular plates are placed side by side for extreme shrinkage, which can save space to a great extent.

[0027] like Figure 5 As shown, the hinge includes a normal hinge and a reverse hinge. The folding angles of the normal hinge and the reverse hinge are both 180°, so that the folding triangle plate can be folded 0-180°.

[0028] Specifically, the first folding triangle 2 and the second folding triangle 4 are rotatably connected by the first positive hinge 3; the second folding triangle 4 and the third folding triangle 13 are rotatably connected by the first reverse hinge 5; the third folding triangle 13 and the fourth folding triangle 16 are rotatably connected by the second positive hinge 23; the fourth folding triangle 16 and the fifth folding triangle 17 are rotatably connected by the linkage reverse hinge 18; the fifth folding triangle 17 and the sixth folding triangle 21 are rotatably connected by the third positive hinge 24; the sixth folding triangle 21 and the seventh folding triangle 22 are rotatably connected by the third reverse hinge 25; the seventh folding triangle 22 and the eighth folding triangle 15 are movably connected by the fourth positive hinge 26. Since all the folding triangles are isosceles right triangles, the eight folding triangles are finally connected to form a square panel after unfolding, and the unfolded area is eight times the folded area.

[0029] The first folding triangle plate 2, the second folding triangle plate 4, the third folding triangle plate 13, the fourth folding triangle plate are symmetrically distributed with the fifth folding triangle plate 17, the sixth folding triangle plate 21, the seventh folding triangle plate 22, and the eighth folding triangle plate 15 about the Z-shaped connecting rod 6. Therefore, the movement of the Z-shaped connecting rod 6 can drive the folding of all the folding triangle plates.

[0030] The hinges are all installed on the edges of the corresponding folding triangles, and the first fixed hinge 14 and the second fixed hinge 20 are installed on the right angles of the corresponding folding triangles. Figure 7 As shown, the normal hinge and the reverse hinge both include a first hinge piece 11 and a second hinge piece 12 hinged together by a pin. On the linked reverse hinge 18, a straight rod 61 is used instead of a pin for hinge connection. When the worm gear 10 rotates, the straight rod 61 is lifted or lowered, and the first hinge piece 11 and the second hinge piece 12 rotate accordingly along the straight rod 61, thereby driving the corresponding folding triangle plate to fold or unfold. Since the hinge adopts the normal hinge and the reverse hinge alternately arranged, all the folding triangle plates are linked to realize the folding and unfolding of the folding mechanism.

[0031] The present invention also includes a controller for controlling the drive motor 7 and a power supply.

[0032] When in use, first fix the bottom box 1 at the designated installation position, drive the motor 7 to drive the worm 9 to rotate, thereby driving the worm wheel 10 and the Z-shaped connecting rod 6 to rotate, driving the linkage reverse hinge 18 between the fourth folding triangle plate 16 and the fifth folding triangle plate 17 to move upward, driving the folding triangle plates to fold outward along the right angles, and driving the other triangle plate plates to fold in turn, and finally completely stored in the bottom box 1, completing the folding and contraction of the overall structure, greatly saving space. If you want to unfold it, you only need to control the drive motor 7 to rotate in the opposite direction of the folding direction.

[0033] The present invention can directly control the contraction of multiple folding plates through a single controller, simplifying the control operation process. In addition, the plates in the contracted state can be folded to a great extent, which can save space and can be used for the expansion and folding of plates in the photovoltaic field.

Claims

1. A triangular plate folding mechanism, characterized in that: It comprises a bottom box (1) and a control mechanism arranged in the bottom box (1), wherein the control mechanism is used to control the folding mechanism to be opened or folded in the bottom box (1); The folding mechanism comprises a plurality of triangular plates which are hinged together end to end in sequence through hinges, wherein one side of the first and last triangular plates is hinged to the wall surface of the bottom box (1), and the control mechanism is connected to one of the hinges and controls its movement.

2. A triangular plate folding mechanism according to claim 1, characterized in that: The control mechanism comprises a drive motor (7), a worm (9) arranged on an output shaft of the drive motor (7), a worm wheel (10) matching the worm (9) being arranged in the base box (1), a Z-shaped connecting rod (6) being arranged on the worm wheel (10), and the other end of the Z-shaped connecting rod (6) being connected to one of the hinged parts.

3. A triangular plate folding mechanism according to claim 2, characterized in that: The worm wheel (10) is an incomplete worm wheel, and the length of the outer arc of the worm wheel (10) is equal to three quarters of the circumference of its outer circle.

4. A triangular plate folding mechanism according to claim 2, characterized in that: The Z-shaped connecting rod (6) comprises a straight rod (61) and an L-shaped short rod (62), one end of the L-shaped short rod (62) is connected to the worm gear (10), and the other end is fixedly connected to one end of the straight rod (61), and the other end of the straight rod (61) is connected to a hinge.

5. The triangular plate folding mechanism according to claim 1, characterized in that: The hinge is a hinge, and the hinge includes a positive hinge and a reverse hinge. The positive hinge and the reverse hinge are alternately installed on the triangular plate.

6. A triangular plate folding mechanism according to claim 5, characterized in that: The folding angles of the forward-mounted hinge and the reverse-mounted hinge are both 180°.

7. The triangular plate folding mechanism according to claim 1, characterized in that: The shape of the triangular plate is an isosceles right triangle.

8. The triangular plate folding mechanism according to claim 1, characterized in that: One end of the first and last triangular plates are hinged to the bottom box (1) via a first fixed hinge (14) and a second fixed hinge (20), respectively; the folding angles of the first fixed hinge (14) and the second fixed hinge (20) are both 90°.

9. The triangular plate folding mechanism according to claim 2, characterized in that: The first and last triangular plates are symmetrically distributed about the Z-shaped connecting rod (6).

Images