A turnover mechanism and a foldable house

Abstract

The application provides a turnover mechanism, comprising a linear driving element (1), a swing element (2), a connecting rod (3), an executing element (4) and a rack (5), the linear driving element (1) comprises a main body (11) and a driving part (12), the swing element (2) comprises a first swing rod (21), a second swing rod (22) and a connecting shaft (23), the driving part (12) and the first swing rod (21) are movably connected and can drive the first swing rod (21) to swing relative to the rack (5), and the second swing rod (22), the connecting rod (3), the executing element (4) and the rack (5) constitute a parallelogram mechanism. By adopting the technical scheme, the executing element can be turned over from one side of a reference plane to the other side which is at least partially located in the reference plane, the force is reasonable, the structure is simple and compact, a large-angle turnover can be realized, automatic control can be easily realized, and the turnover mechanism has a good market application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to a turnover mechanism, more particularly, to a turnover mechanism using a combination of a linear driving element and a parallelogram mechanism and a foldable house using the same. BACKGROUND

[0002] To meet the industrial application, the turnover mechanism is widely used in various mechanical structures to realize the turnover, folding or opening and closing functions of the target piece.

[0003] It is a common way to realize the turnover of the target piece by a linear driving element, which can be a hydraulic cylinder, a pneumatic cylinder or an electric push rod. Due to the need of the force point and the force arm, the main body of the linear driving element is often swingably arranged relative to the rack in the prior art, such as the hydraulic cylinder 7 in patent CN 212562903 U and the hydraulic cylinder 3 in patent CN 217436973 U. However, for some devices, due to the limitation of space and design requirements, the main body of the linear driving element cannot be swingably arranged relative to the rack, so the above-mentioned turnover mode cannot be applied.

[0004] CN 207932994 U discloses a turnover mechanism driven by a horizontal hydraulic cylinder. The main body of the linear driving element (i.e. the hydraulic cylinder 5) is fixed relative to the rack. Through the linear motion of the hydraulic cylinder, the turnover of the target piece (L-shaped workbench 2) can be realized. At this time, a plane parallel to the rotation axis of the target piece is made through the axis of the linear driving element, and the plane is defined as a reference plane. In the mechanism of this patent, the reference plane is a horizontal plane passing through the axis of the hydraulic cylinder 5 and parallel to the ground. It can be seen that the target piece and its rotation axis are always located on one side (the upper side in this mechanism) of the reference plane during the entire turnover process. In the prior art, the mechanism for realizing the turnover by the linear driving element with a fixed main body basically has this feature. However, for some occasions, it is necessary to turn over the target piece from one side of the reference plane to the other side of the reference plane by the linear driving element, that is, to turn over at least a part of the target piece to the other side of the reference plane, for example, a certain foldable house structure. The horizontal wallboard (i.e. the target piece) and its rotation axis are both located on the lower side of the reference plane in the initial state. It is necessary to turn over the horizontal wallboard by 90 degrees by the linear driving element to make it vertical and ensure that most of the horizontal wallboard is turned over to the upper side of the reference plane. However, the prior art solutions including patent CN 207932994 U cannot realize this requirement. Therefore, a new turnover mechanism needs to be designed to solve the above technical problems. SUMMARY

[0005] Therefore, the present application provides a turnover mechanism which can turn over the target piece from one side of the reference plane to at least a part of the other side of the reference plane to solve the problems existing in the prior art. In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is that:

[0006] A turnover mechanism, characterized in that it comprises a linear driving element, a swing element, a connecting rod, an executing element and a frame;

[0007] The linear driving element comprises a main body and a driving part, the main body is fixed relative to the frame;

[0008] The swing element comprises a first swing rod, a second swing rod and a connecting shaft, one end of the first swing rod is fixedly connected with one end of the connecting shaft, the other end of the connecting shaft is fixedly connected with one end of the second swing rod, and the connecting shaft is rotationally connected with the frame;

[0009] The driving part is movably connected with the first swing rod and can drive the first swing rod to swing relative to the frame;

[0010] The other end of the second swing rod is rotationally connected with one end of the connecting rod, the other end of the connecting rod is rotationally connected with the executing element, one end of the executing element is rotationally connected with the frame, and the second swing rod, the connecting rod, the executing element and the frame constitute a parallelogram mechanism.

[0011] Further, a plane parallel to the rotating axis of the executing element is defined as a reference plane, in the initial state, the executing element and the rotating axis thereof are located on the same side of the reference plane, when the driving part drives the first swing rod to swing relative to the frame, the parallelogram mechanism is driven to move, so that the executing element is turned over and partially penetrates the reference plane, and finally a part of the executing element is located on the other side of the reference plane.

[0012] Further, a slider is further included, the slider and the first swing rod constitute a moving pair, and the driving part is rotationally connected with the slider to realize the movable connection with the first swing rod.

[0013] Further, the slider comprises a sliding part and a fixed shaft integrally arranged, a bearing is arranged at the end of the driving part, the sliding part and the first swing rod constitute a moving pair, and the fixed shaft and the bearing cooperate to constitute a rotating pair.

[0014] As a preferred, a supporting wheel is further arranged on the fixed shaft, and the supporting wheel is supported on the frame in a rolling manner.

[0015] As an alternative to the slider, a transmission shaft is further included, a long slot is formed in the first swing rod, the transmission shaft passes through the long slot and is fixed at the end of the driving part, so as to realize the movable connection between the driving part and the first swing rod.

[0016] As a further preferred, a bearing is arranged at the end of the driving part, and the transmission shaft passes through the long slot and cooperates with the bearing.

[0017] As a further optimization, a support wheel is also mounted on the transmission shaft, which rolls and supports on the frame.

[0018] Further, the linear driving element is a hydraulic cylinder or a pneumatic cylinder or an electric push rod.

[0019] Further, the linear driving element is horizontally mounted, the execution element is a flat plate, which is horizontally placed in the initial state and its rotation axis is located on the lower side of the reference plane, one end of the execution element is rotationally connected to the frame through a hinge, the linear driving element can overturn the execution element by 90 degrees to become a vertical state, and most of the execution element is located on the upper side of the reference plane.

[0020] Further, a pin shaft is also included, the connecting shaft is a hollow stepped shaft and includes a first connecting part, a second connecting part, an intermediate part and a center hole, the pin shaft passes through the center hole and is supported on the frame, the diameter of the intermediate part is larger than that of the first connecting part and the second connecting part, one end of the first swing rod is fixedly connected to the first connecting part, and one end of the second swing rod is fixedly connected to the second connecting part.

[0021] Further, the frame includes a support part and a side plate, the support part is located below the execution element and supports it, the side plate is located on one side of the execution element and has a cavity, the linear driving element is located in the cavity, and the pin shaft is respectively mounted on the support part and the side plate, so as to accommodate the swing element and the connecting rod in the space between the support part and the side plate.

[0022] Further, the outer peripheral surface of the support wheel is a concave arc-shaped curved surface, the frame has an arc-shaped protruding part, and the outer peripheral surface and the arc-shaped protruding part are in contact and fit.

[0023] The application further discloses a folding house which adopts the overturning mechanism.

[0024] Compared with the prior art, the application has the following obvious advantages:

[0025] 1. Through the ingenious combination of the swing element and the parallelogram mechanism, the target piece (i.e. the execution element) can be overturned from one side of the reference plane to at least part of the other side of the reference plane.

[0026] 2. The stress position is transferred from the driving part to the connecting shaft of the swing element, and then to the crank (i.e. the second swing rod) of the parallelogram mechanism, the stress is reasonable, the structure is simple and compact, a large-angle overturning can be realized, and automatic control can be easily realized. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1Structure schematic diagram of the first embodiment of the present application when the execution element 4 is in the initial position;

[0028] Figure 2 Structure schematic diagram of the first embodiment of the present application when the execution element 4 is in the initial position;

[0029] Figure 3 Structure schematic diagram of the first embodiment of the present application when the execution element 4 is in the intermediate position (omitting the side plate);

[0030] Figure 4 Structure schematic diagram of the first embodiment of the present application when the execution element 4 is in the final position (omitting the side plate);

[0031] Figure 5 Structure schematic diagram of the first embodiment of the present application when the execution element 4 is in the final position (omitting the side plate);

[0032] Figure 6 Structure schematic diagram of the first embodiment of the present application when the execution element 4 is in the final position (omitting the side plate);

[0033] Figure 7 Structure schematic diagram of the first embodiment of the present application when the execution element 4 is in the final position (omitting the side plate);

[0034] Figure 8 Structure schematic diagram of the first embodiment of the present application when the execution element 4 is in the final position (omitting the side plate);

[0035] Figure 9 Structure schematic diagram of the first embodiment of the present application when the execution element 4 is in the final position (omitting the side plate);

[0036] Reference signs:

[0037] 1, straight driving element, 11, main body, 12, driving part, 121, bearing; 2, oscillating element, 21, first oscillating rod, 211, long slot, 22, second oscillating rod, 23, connecting shaft, 231, first connecting part, 232, second connecting part, 233, intermediate part, 234, center hole; 3, connecting rod; 4, execution element; 5, frame, 51, supporting part, 52, side plate, 521, cavity, 522, arc-shaped protruding part; 6, sliding block, 61, sliding part, 62, fixed shaft; 7, supporting wheel, 71, outer peripheral surface; 8, transmission shaft; 9, pin shaft. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will describe the embodiments of the present application in detail with reference to the drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0039] As Figures 1-7As shown, a turnover mechanism comprises a linear driving element 1, a swing element 2, a connecting rod 3, an execution element 4 and a frame 5, the linear driving element 1 is preferably a hydraulic cylinder, of course, it can also be a pneumatic cylinder or an electric push rod and other common mechanisms;

[0040] The linear driving element 1 comprises a main body 11 and a driving part 12, the main body 11 is fixed relative to the frame 5;

[0041] The swing element 2 comprises a first swing rod 21, a second swing rod 22 and a connecting shaft 23, one end of the first swing rod 21 is fixedly connected with one end of the connecting shaft 23, the other end of the connecting shaft 23 is fixedly connected with one end of the second swing rod 22, and the connecting shaft 23 is rotationally connected with the frame 5;

[0042] The driving part 12 is movably connected with the first swing rod 21 and can drive the first swing rod 21 to swing relative to the frame 5;

[0043] The other end of the second swing rod 22 is rotationally connected with one end of the connecting rod 3, the other end of the connecting rod 3 is rotationally connected with the execution element 4, one end of the execution element 4 is rotationally connected with the frame 5, and the second swing rod 22, the connecting rod 3, the execution element 4 and the frame 5 constitute a parallelogram mechanism.

[0044] A plane parallel to the rotation axis of the execution element 4 is made through the axis of the linear driving element 1, and the plane is defined as a reference plane A, it can be seen that in the initial state, the execution element 4 and its rotation axis are located on the same side of the reference plane A, when the driving part 12 drives the first swing rod 21 to swing relative to the frame 5, it drives the parallelogram mechanism to move, so that the execution element 4 is overturned and partially penetrates the reference plane A, and finally a part of the execution element 4 is located on the other side of the reference plane A.

[0045] Further, a sliding block 6 is further included, the sliding block 6 comprises a sliding part 61 and a fixed shaft 62 integrally arranged, the sliding part 61 and the first swing rod 21 constitute a moving pair, the driving part 12 is provided with a bearing 121 at the end, and the fixed shaft 62 and the bearing 121 cooperate to constitute a rotating pair, through the arrangement, the linear motion of the driving part 12 is converted into the swing of the first swing rod 21.

[0046] Further, a support wheel 7 is further assembled on the fixed shaft 62, the support wheel 7 is rolling supported on the frame 5, through the arrangement of the support wheel 7, on the one hand, the driving part 12 is provided with auxiliary support, and on the other hand, the friction in the movement process is reduced.

[0047] Further, the executing element 4 is a flat plate, and in the initial state, the executing element 4 is horizontally placed and located below the reference plane A with the rotating axis thereof, one end of the executing element 4 is rotationally connected with the frame 5 through a hinge, and the linear driving element 1 can turn the executing element 4 by 90 degrees to be in the vertical state and make most of the executing element 4 be located above the reference plane A, and the hinge rotation can make the force on the executing element 4 more reasonable and facilitate the limiting of the rotating limit.

[0048] Further, the frame 5 further comprises a pin shaft 9, the connecting shaft 23 is a hollow stepped shaft and comprises a first connecting part 231, a second connecting part 232, an intermediate part 233 and a central hole 234, the pin shaft 9 passes through the central hole 234 and is supported on the frame 5, the diameter of the intermediate part 233 is larger than that of the first connecting part 231 and the second connecting part 232, one end of the first swing rod 21 is fixedly connected with the first connecting part 231, one end of the second swing rod 22 is fixedly connected with the second connecting part 232, and the first swing rod 21 and the second swing rod 22 are fixedly arranged at an acute angle, and the fixing mode is preferably welding, so that the swing element 2 can rotate relative to the frame 5 through the pin shaft 9, and the intermediate part 233 is used to separate the first swing rod 21 and the second swing rod 22 and make them be located in different working planes respectively, so as to avoid interference.

[0049] Further, the frame 5 comprises a supporting part 51 and a side plate 52, the supporting part 51 is located below the executing element 4 and supports the same, and the side plate 52 is located on one side of the executing element 4 and has a cavity 521, the linear driving element 1 is located in the cavity 521, and the two ends of the pin shaft 9 are respectively installed on the supporting part 51 and the side plate 52, so that the swing element 2 and the connecting rod 3 are accommodated in the space between the supporting part 51 and the side plate 52, the linear driving element 1 is installed in the cavity 521, and the swing element 2 and the connecting rod 3 are arranged between the supporting part 51 and the side plate 52, so that the overall structure is more compact.

[0050] Preferably, the outer circumferential surface 71 of the supporting wheel 7 is a concave arc-shaped curved surface, the frame 5 has an arc-shaped protruding part 522, and the outer circumferential surface 71 and the arc-shaped protruding part 522 are in contact and fit, and the adoption of this arrangement can axially limit the supporting wheel 7 through the frame 5.

[0051] The working principle of the overturning mechanism is as follows:

[0052] When the driving part 12 of the linear driving element 1 is extended, the first swing rod 21 is swung through the sliding block 6, so as to drive the second swing rod 22 to rotate through the integrally arranged connecting shaft 23, the executing element 4 is overturned through the parallelogram mechanism, and the executing element 4 is turned from the horizontal state to the vertical state by 90 degrees due to the limiting effect of the hinge; when the driving part 12 is retracted, the whole action process is reversed, which will not be described herein.

[0053] Figure 8 andFigure 9 The local structure diagram of the second embodiment of the present application is shown in the figure, and the main difference from the first embodiment is that the slider 6 is omitted, and a long slot 211 is opened on the first swing rod 21, and the transmission shaft 8 passes through the long slot 211 and is fixed at the end of the driving part 12, so as to realize the movable connection of the driving part 12 and the first swing rod 21.

[0054] As a preferred, the end of the driving part 12 is equipped with a bearing 121, and the transmission shaft 8 passes through the long slot 211 and cooperates with the bearing 121, so as to make the transmission shaft 8 make rolling motion relative to the long slot 211, and further reduce the friction.

[0055] As a preferred, the transmission shaft 8 is equipped with the supporting wheel 7, and the supporting wheel 7 rolls and supports on the frame 5.

[0056] The present application further discloses a folding house, which adopts the turnover mechanism of the first embodiment or the second embodiment.

[0057] The turnover mechanism of the present application can also be used in other occasions except the folding house, such as used for the automatic turnover of the upper cover of the container of dangerous liquid (high temperature, toxic, pollution, etc.).

[0058] Although the embodiments of the present application are disclosed above, the content is only for the convenience of understanding the present application, and is not used to limit the present application. Any person skilled in the art of the present application can make any modification and change in the form and details without departing from the spirit and scope of the present application, but the patent protection scope of the present application should be subject to the scope defined by the appended claims.

Claims

1. A turnover mechanism characterised in that: The linear driving element (1), the swing element (2), the connecting rod (3), the execution element (4) and the frame (5) are included. The linear driving element (1) includes a main body (11) and a driving part (12), and the main body (11) is fixed relative to the frame (5). The swing element (2) includes a first swing rod (21), a second swing rod (22) and a connecting shaft (23), one end of the first swing rod (21) is fixedly connected with one end of the connecting shaft (23), the other end of the connecting shaft (23) is fixedly connected with one end of the second swing rod (22), and the connecting shaft (23) is rotationally connected with the frame (5). The driving part (12) is movably connected with the first swing rod (21) and can drive the first swing rod (21) to swing relative to the frame (5). The other end of the second swing rod (22) is rotationally connected with one end of the connecting rod (3), the other end of the connecting rod (3) is rotationally connected with the execution element (4), one end of the execution element (4) is rotationally connected with the frame (5), and the second swing rod (22), the connecting rod (3), the execution element (4) and the frame (5) form a parallelogram mechanism. A plane parallel to the rotation axis of the execution element (4) is defined as a reference plane (A) through the axis of the linear driving element (1), in the initial state, the execution element (4) and its rotation axis are located on the same side of the reference plane (A), when the driving part (12) drives the first swing rod (21) to swing relative to the frame (5), the parallelogram mechanism is driven to move, so that the execution element (4) is flipped and partially penetrates the reference plane (A), and finally a part of the execution element (4) is located on the other side of the reference plane (A). The linear driving element (1) is horizontally installed, the execution element (4) is a flat plate, in the initial state, the execution element (4) is horizontally placed and its rotation axis is located on the lower side of the reference plane (A), one end of the execution element (4) is rotationally connected with the frame (5) through a hinge, the linear driving element (1) can flip the execution element (4) by 90 degrees to become a vertical state, and most of the execution element (4) is located on the upper side of the reference plane (A).

2. A turnover mechanism as claimed in claim 1, characterised in that: The slider (6) is movably connected with the first swing rod (21), and the driving part (12) is rotationally connected with the slider (6) to realize the movable connection with the first swing rod (21).

3. A turnover mechanism as claimed in claim 2, characterised in that: The slider (6) includes a sliding part (61) and a fixed shaft (62) integrally arranged, the driving part (12) is provided with a bearing (121) at the end, the sliding part (61) is movably connected with the first swing rod (21), and the fixed shaft (62) is rotationally connected with the bearing (121).

4. A turnover mechanism as claimed in claim 3, characterised in that: The fixed shaft (62) is further provided with a supporting wheel (7), and the supporting wheel (7) is rollingly supported on the frame (5).

5. A turnover mechanism as claimed in claim 1, characterized in that: Further comprising a transmission shaft (8), a long slot (211) is opened on the first swing lever (21), the transmission shaft (8) passes through the long slot (211) and is fixed to the end of the driving part (12), so as to realize the movable connection of the driving part (12) and the first swing lever (21).

6. A turnover mechanism as claimed in claim 5, characterised in that: The end of the driving part (12) is provided with a bearing (121), and the transmission shaft (8) passes through the long slot (211) and cooperates with the bearing (121).

7. A turnover mechanism as claimed in claim 6, characterised in that: The transmission shaft (8) is further provided with a supporting wheel (7), and the supporting wheel (7) is supported on the rack (5) in a rolling manner.

8. The turnover mechanism of claim 1 wherein: The straight line driving element (1) is a hydraulic cylinder or a pneumatic cylinder or an electric push rod.

9. A turnover mechanism as claimed in claim 1, characterised in that: Further comprising a pin shaft (9), the connecting shaft (23) is a hollow stepped shaft and comprises a first connecting part (231), a second connecting part (232), an intermediate part (233) and a center hole (234), the pin shaft (9) passes through the center hole (234) and is supported on the rack (5), the diameter of the intermediate part (233) is larger than that of the first connecting part (231) and the second connecting part (232), one end of the first swing lever (21) is fixedly connected with the first connecting part (231), and one end of the second swing lever (22) is fixedly connected with the second connecting part (232).

10. A turnover mechanism as claimed in claim 9, characterised in that: The rack (5) comprises a supporting part (51) and a side plate (52), the supporting part (51) is located below the executing element (4) and supports the executing element (4), the side plate (52) is located on one side of the executing element (4) and has a cavity (521), the straight line driving element (1) is located in the cavity (521), and the pin shaft (9) is respectively installed at two ends of the supporting part (51) and the side plate (52), so as to accommodate the swing element (2) and the connecting rod (3) in the space between the supporting part (51) and the side plate (52).

11. A turnover mechanism as claimed in claim 4 or 7, characterised in that: The outer peripheral surface (71) of the supporting wheel (7) is a concave arc-shaped curved surface, the rack (5) is provided with an arc-shaped protruding part (522), and the outer peripheral surface (71) and the arc-shaped protruding part (522) are in contact and cooperation.

12. A foldable house characterized by, The overturning mechanism comprises the straight line driving element (1) according to any one of claims 1 to 10. The overturning mechanism comprises the straight line driving element (1) according to any one of claims 1 to 10.

Images