Foldable wind-guiding rainproof device

Abstract

The utility model discloses a foldable wind-guiding rainproof device, which comprises a transverse support frame connected with an air outlet of a load cabinet and a square bottom frame fixedly arranged on the support frame, a door-shaped middle frame and a shutter are sequentially sleeved outside the bottom frame, and after the middle frame and the shutter are unfolded in a fan shape, the door-shaped middle frame and the shutter are folded into a whole. The bottom frame, the middle frame and the blind window internally form a bent air channel larger than or equal to 90 degrees, and the blind window is opened and is transversely or downwards inclined. And after the middle frame and the blind window are folded, the blind window is closed. When the load cabinet works, the middle frame and the shutters are unfolded in a fan shape, and after the shutters are opened, normal ventilation and heat dissipation of the load cabinet can be guaranteed. When the load cabinet stops running, the middle frame and the shutter are folded, and the shutter is closed. Rainwater and other sundries are prevented from entering the load cabinet. After being folded, the load cabinet is small in occupied space and not prone to being collided, the overall size of the load cabinet can be reduced, occupied space is reduced, and transportation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation duct systems, in particular to a foldable wind-guiding and rain-proof device. Background Art

[0002] The load cabinet is a widely used electrical testing equipment, mainly used to detect and inspect the performance and reliability of various generators. The load cabinet can simulate the load status of various power systems, so that power equipment can be tested and inspected in a real working environment. Since most load boxes need to simulate high-power loads, the heat generated is also very large. Usually, there are one or more fans and one or more air outlets inside the load cabinet to dissipate heat. Usually, the working environment of the load cabinet is complex. Some load cabinets are operated outdoors for a long time, and their air outlets are not rainproof, or although a rain cover is provided, the rain cover is too large. Since it cannot be folded, the overall height or volume of the load cabinet is too large, which makes it inconvenient to transport. It also takes up a lot of space when stored, which makes transportation inconvenient and easy to be bumped.

[0003] In addition, if the load cabinet stops running, the corresponding fan used for heat dissipation will also stop running, and rainwater and other debris (such as dust, leaves, insects and small animals) from the outside will enter the load cabinet through the air outlet, which can easily cause the load cabinet to malfunction.

[0004] Patent application publication number CN221428268U discloses an improved high-voltage control cabinet, comprising a cabinet body and a rain cover slidably mounted on the cabinet body. The rain cover can be installed during use to provide rain protection. The rain cover can be removed for transport. However, since the rain cover separates from the cabinet body when removed, it can easily be lost. Furthermore, the cabinet's air outlet remains open when the cabinet is not in operation, allowing debris to easily enter.

[0005] Patent application CN114421335A discloses a mechatronic power distribution cabinet protection device featuring a folding canopy on top that is raised and lowered by a pneumatic cylinder. During operation, the cylinder raises the canopy to prevent rainwater from entering the cabinet and affecting its operation. Because the canopy is powered by a pneumatic cylinder, it requires a compressed air source and will not function properly without it. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a foldable wind guide and rain protection device, which is used to solve the problem that the overall size of the load cabinet is too large due to the installation of a rain cover, resulting in inconvenience in transportation and large space occupied during storage.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A foldable wind-guiding and rain-proof device comprises a horizontal support frame and a U-shaped bottom frame fixedly arranged on the support frame, a door-shaped middle frame and shutters are sequentially sleeved on the outside of the bottom frame, the side surfaces of the bottom frame, the middle frame and the shutters gradually increase in size from the inside to the outside, the bottom frame, the middle frame and the shutters are nested in sequence to form a fan shape, and the inner ends of the bottom frame, the middle frame and the shutters are all rotatably connected to the bottom frame; after the middle frame and the shutters are unfolded in a fan shape, a curved air duct greater than or equal to 90 degrees is formed inside the bottom frame, the middle frame and the shutters, the shutters are opened and the shutters are oriented horizontally or tilted downward; after the middle frame and the shutters are folded, the shutters are closed.

[0009] Furthermore, the shutters include a door-shaped window frame that is sleeved outside the corresponding middle frame and a number of transverse rectangular blades arranged between two side panels of the window frame. The size of the side panels gradually increases from the inside to the outside. The inner ends of the side panels are hinged to the bottom frame. The blades are parallel to each other. The inner corners of the blades are rotatably connected to the side panels of the window frame. A pull strip is provided between the blades and the side panels. The outer corners of the blades are rotatably connected to the pull strip. A connecting rod is provided at one end of the pull strip close to the rotation center of the shutter. One end of the connecting rod is rotatably connected to the pull strip, and the other end is rotatably connected to the bottom frame. The rotational connection position of the connecting rod and the bottom frame is located on the side of the rotation axis of the shutter away from the air duct. After the middle frame and the shutter are folded, the blades overlap each other.

[0010] Furthermore, the side of the top plate of the window frame close to the middle frame is a second inner turn-down edge turned inward, the side of the frame plate at the top of the middle frame close to the window frame is a first outer turn-down edge turned outward, and the side of the frame plate at the top of the middle frame away from the window frame is a first inner turn-down edge turned inward; after the middle frame and the blinds are fan-shaped, the second inner turn-down edge overlaps with the corresponding first outer turn-down edge, and the first inner turn-down edges and the first outer turn-down edges on the two adjacent middle frames overlap.

[0011] Furthermore, the side of the top plate of the bottom frame close to the middle frame is a third outer flange turned outward; after the middle frame and the shutter are fan-shaped, the third outer flange overlaps with the first inner flange on the corresponding middle frame.

[0012] Furthermore, the side of the blade close to the side plate is an end plate, and the end plate is hinged to the pull rod.

[0013] Furthermore, the edges of the blades away from the middle frame are turned downward, and the edges of the blades close to the middle frame are turned upward. After the bottom frame, the middle frame and the shutter are folded, the downward-turned edges of the blades overlap the upward-turned edges of the adjacent blades.

[0014] Furthermore, a reduction motor is fixedly connected to the outer side of the support frame, a rotating shaft is rotatably connected to the support frame, the shutter is fixedly connected to the rotating shaft, and the reduction motor is transmission-connected to the rotating shaft.

[0015] Furthermore, a travel switch is fixedly connected to the outside of the support frame, and after the middle frame and the shutter are folded, the shutter rests on the travel switch.

[0016] The positive effects of this utility model are:

[0017] The utility model comprises a support frame, which is sequentially provided with a bottom frame, an intermediate frame, and louvers. The bottom frame is mounted at the air outlet of the load cabinet. When the load cabinet is in operation, the intermediate frame and louvers unfold in a fan-shaped pattern. When the louvers are opened, they ensure proper ventilation and heat dissipation of the load cabinet. Hot air from the load cabinet is blown out through the louvers through an air duct within the intermediate frame. The air outlet of the louvers is slightly tilted downward, preventing rainwater and other debris from entering the load cabinet through the duct, thereby ensuring normal operation of the load cabinet. When the load cabinet stops operating, the intermediate frame and louvers fold and close. The top surface of the closed louvers is tilted, allowing rainwater that falls on the louvers to flow out and preventing other debris from entering the load cabinet through the louvers, thereby preventing malfunctions when the load cabinet resumes operation. Furthermore, the utility model occupies very little space when folded, making it less susceptible to bumps and collisions. This reduces the overall size of the load cabinet, minimizing space requirements and making transportation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model after it is unfolded;

[0019] Figure 2 This is a schematic structural diagram of the shutter of the utility model after unfolding;

[0020] Figure 3 It is a cross-sectional view of the utility model after expansion;

[0021] Figure 4 Figure 3 A partial enlarged view of the middle part I;

[0022] Figure 5 yes Figure 3 A partial enlarged view of part II;

[0023] Figure 6 Stereoscopic image of the middle frame;

[0024] Figure 7 It is viewed from left to right Figure 2 A perspective view of the middle shutter;

[0025] Figure 8 It is a schematic diagram of the interior of the shutter after the utility model is unfolded and the window frame is removed;

[0026] Figure 9 It is a cross-sectional view of the shutter of the utility model after unfolding;

[0027] Figure 10 It is a schematic diagram of the utility model after folding;

[0028] Figure 11 It is a cross-sectional view of the utility model after folding;

[0029] In the picture:

[0030] 1. Support frame; 2. Bottom frame; 3. Middle frame; 4. Venetian blinds; 5. Gear motor; 6. Mounting plate; 7. Travel switch; 8. Window frame; 9. Blades; 10. Pull rod; 11. Rotating shaft; 12. Mounting seat; 13. First outer flange; 14. First inner flange; 15. Frame plate; 16. Second inner flange; 17. End plate; 18. Third outer flange; 19. Connecting rod; 20. Side plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. The described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0032] Example 1

[0033] like Figures 1 to 6 As shown, a foldable wind-guiding and rain-proof device includes a horizontal support frame 1 and a bottom frame 2 with a U-shaped cross-section riveted on the support frame 1. The bottom frame 2 is covered with a door-shaped middle frame 3 and shutters 4 in sequence. The side of the bottom frame 2 is a right-angled trapezoid with the large end facing outward, and the side of the middle frame 3 is an isosceles triangle with the bottom edge facing outward. The middle frames 3 are seven nested in a fan shape. The inner ends of the bottom frame 2, middle frame 3 and shutters 4 (i.e., the end close to the center of the fan) are all hinged to the support frame 1. The support frame 1 is welded by a square tube 1 to form a rectangular frame structure. The bottom frame 2 and middle frame 3 are both cut and bent from sheet materials. When the middle frame 3 and shutters 4 are unfolded in a fan shape, the interior is an air duct with a fan-shaped bend greater than 90 degrees. At this time, the shutters 4 are open and the right side of the shutters 4 is slightly tilted downward. When the middle frame 3 and shutters 4 are folded as shown in the figure, the inner ends of the bottom frame 2, middle frame 3 and shutters 4 are hinged to the support frame 1. Figure 10 After the state shown, the shutter 4 is closed.

[0034] During installation, the bottom of the base frame 2 is screwed to the load cabinet's air outlet. When the load cabinet is operating, the seven intermediate frames 3 and louvers 4 unfold in a fan-shaped pattern, opening the louvers 4 to ensure proper heat dissipation. Since hot air from the load cabinet is blown out through the louvers 4 via the air duct, and the air outlet of the louvers 4 is slightly tilted downward, rainwater and other debris are prevented from entering the load cabinet through the air duct, ensuring normal operation of the load cabinet.

[0035] When the load cabinet stops running, the seven middle frames 3 and the shutters 4 are folded into the shape of Figure 10 In the illustrated state, the shutters 4 are closed. When closed, the top surface of the shutters 4 is tilted, allowing rainwater that falls on the shutters 4 to flow out and preventing debris from entering the load cabinet through the shutters 4. This prevents malfunctions when the load cabinet is operated again. Furthermore, the present invention occupies very little space when folded, making it less susceptible to knocks and bumps. This reduces the overall size of the load cabinet, minimizing space usage and making transportation more convenient without risk of loss or omission.

[0036] Example 2

[0037] Combine Figures 7 to 9 As shown, this embodiment is improved on the basis of embodiment 1. The difference between this embodiment and embodiment 1 is that:

[0038] The shutter 4 comprises a window frame 8 having a door-shaped cross-section and twelve transverse rectangular blades 9 disposed between two side panels 20 of the window frame 8. The side panels 20 are in the shape of a right-angled trapezoid with the long sides facing upward, and their upper left corners are right angles. The left side of the bottom of the side panel 20 is hinged to the bottom frame 2, and the left side of the window frame 8 is connected to the corresponding middle frame 3. The blades 9 are parallel to each other and perpendicular to the side panels 20. The right ends of the blades 20 are slightly tilted downward. The inner corners of the blades 9 (i.e., closer to the air duct) are rotatably connected to the corresponding side panels 20. Brackets 10 are provided between the blades 9 and the side panels 20, and the outer corners of the blades 9 (i.e., away from the air duct) are hinged to the corresponding brackets 10. The pull strips 10 are each provided with a connecting rod 19 at one end close to the rotation center of the shutter 4. One end of the connecting rod 19 is hinged to the lower end of the corresponding pull strip 10, and the other end is hinged to the side of the bottom frame 2 corresponding to the bottom frame 2. The hinge position of the connecting rod 19 and the bottom frame 2 is located on the right side of the rotation axis of the shutter 4.

[0039] When the utility model is Figure 1 The status shown is Figure 10 When folded in the shown state, the window frame 4 rotates around its lower end, and at the same time, the connecting rod 19 pulls the tie rod 10, and the tie rod 10 pulls the outer corners of the blades 9, so that the blades 9 overlap each other. The blades 9 form an inclined stepped shape after overlapping, which facilitates the drainage of rainwater on the blades and prevents rainwater from accumulating on the blades 9.

[0040] Example 3

[0041] like Figures 3 to 5 As shown, this embodiment is further improved on the basis of Example 2. Specifically, the difference between this embodiment and Example 2 is that:

[0042] The frame plate 15 at the top of the window frame 8 has a second inner flange 18 that is turned inward (i.e., toward the air duct) on the side close to the middle frame 2. The top plate of the middle frame 3 has a first outer flange 13 that is turned outward (i.e., away from the air duct) on the side close to the window frame 8. The top plate of the middle frame 3 has a first inner flange 14 that is turned inward on the side away from the window frame 8.

[0043] After the middle frame 3 and the shutter 4 are fan-shaped, the second inner flange 16 overlaps with the corresponding first outer flange 13, the first inner flange 14 and the first outer flange 13 on the two adjacent middle frames 3 overlap, and the top plate of the bottom frame 2 is close to the side of the middle frame 3 as a third outer flange 18 turned outward.

[0044] When the utility model is Figure 10 The status shown is Figure 1 During the unfolding process of the state shown, the window frame 8 rotates, and under the action of the second inner flange 16 and the first outer flange 13, the first outer flange 13 and the first inner flange 14, each intermediate frame 3 is unfolded in sequence. Figure 1 In the state shown, the second inner flange 16 overlaps the first outer flange 13, the adjacent first outer flange 13 overlaps the first inner flange 14, and the third outer flange 18 overlaps the corresponding first inner flange 14, thereby forming a closed air duct within the bottom frame 2, the middle frame 3 and the window frame 8, preventing falling rainwater from entering the air duct from the connection between the bottom frame 2, the middle frame 3 and the window frame 8, and then entering the load cabinet, causing a load cabinet failure.

[0045] Combine Figure 7 、 Figure 8 、 Figure 9 and Figure 11 As shown, the side of the blade 9 near the side panel 20 is an upwardly turned end panel 17, and the upper left corner of the end panel 17 is hinged to the tie bar 10. The provision of the end panel 17 prevents the hinged connection between the blade 9 and the side panel 20 from interfering with the tie bar 10 after the present invention is folded, thereby preventing the formation of gaps between adjacent blades 9, resulting in a poor seal and allowing rainwater or other debris to enter the load cabinet through these gaps.

[0046] like Figure 9As shown, the left edge of the blade 9 (i.e., the edge away from the middle frame 3) is turned downward, and the right edge of the blade 9 (i.e., the edge close to the middle frame 3) is turned upward, and the bottom edge of the left edge of the blade 9 is rotatably connected to the corresponding side plate 20. Therefore, when the bottom frame 2, the middle frame 3 and the shutter 4 are folded to the position shown in FIG. Figure 10 and Figure 11 After the state shown, the downward-turned edge of the blade 9 overlaps the upward-turned edge of the adjacent blade 9 and forms a slope, thereby further improving the sealing between the two adjacent blades 9 and preventing rainwater from entering.

[0047] Example 4

[0048] like Figure 1 and Figure 2 As shown, this embodiment is further improved on the basis of embodiment 3. The difference between this embodiment and embodiment 3 is that:

[0049] The outer side of the bottom frame 2 is fixedly connected to a mounting seat 12 at a position corresponding to the bottom of the window frame 8. The lower end of the connecting rod 19 is hinged to the mounting seat 12. One side of the bottom frame 2 is fixedly connected to a mounting plate 6. A rotating shaft 11 is transmitted through the two mounting seats 12. The middle frame 3 is rotatably connected to the rotating shaft 11. The window frame 8 is fixedly connected to the rotating shaft 11. A reduction motor 5 is fixedly provided on the mounting plate 6. The reduction motor 5 is connected to the rotating shaft 11 through a coupling.

[0050] Driven by the reduction motor 5, the window frame 8 can be rotated, thereby realizing the unfolding and folding of the utility model, which is more convenient to control, more rapid in action, and saves time and effort. Since the reduction motor 5 is used for driving, no additional compressed air equipment is required.

[0051] A travel switch 7 is fixedly connected to the outside of the support frame 1. When the middle frame 3 and the shutter 4 are folded, the shutter 4 abuts against the travel switch 7, triggering the travel switch 7 to stop the reduction motor 5 from rotating, thereby achieving automatic stopping of the reduction motor 5.

[0052] The utility model can be used not only for load cabinets, but also for ventilation and heat dissipation of other electrical control cabinets.

[0053] The above-mentioned embodiments are described in a relatively detailed and specific manner, expressing preferred embodiments of the present invention. They are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, they are not limited to the present invention alone, and the patent scope of the present invention cannot be limited solely by these embodiments. That is, any equivalent changes or modifications made to the spirit disclosed by the present invention, for researchers or technicians in this field, without departing from the structure of the present invention, local improvements within the system and changes and conversions between subsystems, etc., are still within the patent scope of the present invention.

Claims

1. A foldable wind and rain protection device, characterized in that: It includes a horizontal support frame (1) and a rectangular bottom frame (2) fixedly arranged on the support frame (1). An inverted U-shaped middle frame (3) and a louver (4) are successively sleeved outside the bottom frame (2). The side dimensions of the bottom frame (2), the middle frame (3) and the louver (4) gradually increase from inside to outside. The bottom frame (2), the middle frame (3) and the louver (4) are nested in sequence to form a sector. The inner ends of the bottom frame (2), the middle frame (3) and the louver (4) are all rotatably connected to the bottom frame (2). After the middle frame (3) and the louver (4) are unfolded in a sector shape, a bent air duct with an angle of 90 degrees or more is formed inside the bottom frame (2), the middle frame (3) and the louver (4). The louver (4) is opened and the orientation of the louver (4) is horizontal or inclined downward. After the middle frame (3) and the louver (4) are folded, the louver (4) is closed.

2. A foldable wind and rain protection device according to claim 1, characterized in that: The louver (4) includes a door-shaped window frame (8) sleeved outside the corresponding middle frame (3) and several horizontal rectangular blades (9) arranged between two side plates (20) of the window frame (8). The size of the side plates (20) gradually increases from inside to outside. The inner end of the side plate (20) is hinged to the bottom frame (2). The blades (9) are parallel to each other. The inner corners of the blades (9) are all rotatably connected to the side plates (20) of the window frame (8). A stay bar (10) is arranged between the blades (9) and the side plates (20). The outer corners of the blades (9) are all rotatably connected to the stay bar (10). A connecting rod (19) is arranged at one end of the stay bar (10) close to the rotation center of the louver (4). One end of the connecting rod (19) is rotatably connected to the stay bar (10), and the other end is rotatably connected to the bottom frame (2). The position where the connecting rod (19) is rotatably connected to the bottom frame (2) is located on the side of the rotation axis of the louver (4) away from the air duct. After the middle frame (3) and the louver (4) are folded, the blades (9) overlap each other.

3. A foldable wind and rain protection device according to claim 2, characterized in that: One side of the top plate of the window frame (8) close to the middle frame (3) is a second inward turned edge (16) turned inward. One side of the frame plate (15) at the top of the middle frame (3) close to the window frame (8) is a first outward turned edge (13) turned outward. One side of the frame plate (15) at the top of the middle frame (3) away from the window frame (8) is a first inward turned edge (14) turned inward. After the middle frame (3) and the louver (4) are unfolded in a sector shape, the second inward turned edge (16) overlaps with the corresponding first outward turned edge (13). The first inward turned edge (14) and the first outward turned edge (13) on adjacent middle frames (3) overlap.

4. A foldable wind and rain protection device according to claim 3, characterized in that: One side of the top plate of the bottom frame (2) close to the middle frame (3) is a third outward turned edge (18) turned outward. After the middle frame (3) and the louver (4) are unfolded in a sector shape, the third outward turned edge (18) overlaps with the first inward turned edge (14) on the corresponding middle frame (3).

5. The foldable wind and rain protection device according to claim 2, characterized in that: One side of the blade (9) close to the side plate (20) is an end plate (17), and the end plate (17) is hinged to the stay bar (10).

6. The foldable wind and rain protection device according to claim 2, characterized in that: The edges of the blades (9) away from the middle frame (3) are turned downwards, and the edges of the blades (9) close to the middle frame (3) are turned upwards. After the bottom frame (2), the middle frame (3) and the shutter (4) are folded, the edges of the blades (9) turned downwards overlap the edges of the adjacent blades (9) turned upwards.

7. The foldable wind and rain protection device according to claim 1, characterized in that: A reduction motor (5) is fixedly connected to the outside of the support frame (1), a rotating shaft (11) is rotatably connected to the support frame (1), the shutter (4) is fixedly connected to the rotating shaft (11), and the reduction motor (5) is transmission-connected to the rotating shaft (11).

8. The foldable wind deflector and rainproof device according to claim 1, characterized in that: A travel switch (7) is fixedly connected to the outside of the support frame (1); after the middle frame (3) and the shutter (4) are folded, the shutter (4) abuts against the travel switch (7).

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