A ventilation fan structure for an elevator car

Abstract

This utility model relates to a ventilation fan structure for an elevator car, belonging to the technical field of ventilation fan structures. It includes a mounting frame, a cover plate, and a ventilation fan. Both the mounting frame and the cover plate have ventilation mesh panels. A motor is mounted on the upper end of the ventilation mesh panel of the mounting frame. The motor output shaft passes through the ventilation mesh panel and is fixedly connected to a plug-in block. The upper end of the ventilation mesh panel of the cover plate is rotatably connected to the ventilation fan via a rotating shaft. The ventilation fan has a plug-in groove at its center that corresponds to the plug-in block. Two limiting mechanisms are slidably connected to both sides of the cover plate. Each limiting mechanism includes a limiting rod. The edge of the mounting frame has a horizontally arranged limiting groove corresponding to the limiting rod, and the limiting rod is inserted into the limiting groove. This patent, by mounting the ventilation fan on the cover plate and fixing it to the mounting frame through the limiting mechanisms on the side of the cover plate, facilitates easy removal of the cover plate for cleaning of the ventilation fan.

Description

Technical Field

[0001] This utility model relates to a ventilation fan structure for an elevator car, belonging to the technical field of ventilation fan structure. Background Technology

[0002] An elevator car is a relatively enclosed space. During operation, the air cannot be refreshed in time, which can easily lead to problems such as oxygen deficiency and odor accumulation. Therefore, ventilation fans are often installed in elevators to effectively improve the air environment inside the car and enhance passenger comfort and satisfaction.

[0003] A search revealed CN220507109U, which discloses a ventilation structure for an elevator car, including an elevator car body and a ventilation mechanism. The ventilation mechanism includes an air inlet chamber, within which a ventilation fan is installed. A connecting shell is inserted and fixed to the bottom of the air inlet chamber, and mounting components are fixed to the four corners of the bottom of the connecting shell. This invention involves creating an opening at the top of the elevator car body that matches the specifications of the outer wall of a square tube. The square tube and its components are then inserted downwards from the top of the elevator car body through the opening. An air outlet shell is then spliced ​​and fixed upwards from inside the elevator car body to the square tube. By adjusting the distance between the connecting shell and the top of the elevator car body using the mounting components, this ventilation structure can be adapted to elevator cars of different specifications.

[0004] However, after prolonged use, dust accumulates on the ventilation fan blades inside the casing, making them difficult to clean. This can lead to reduced ventilation efficiency, unpleasant odors, and even harm to passengers' health. Utility Model Content

[0005] The technical problem this invention aims to solve is that, after prolonged use, dust accumulates on the ventilation fan blades inside the casing of existing elevator cars, making cleaning difficult.

[0006] To address the aforementioned problems, this utility model provides a ventilation fan structure for an elevator car, comprising a mounting frame, a cover plate, and a ventilation fan. Both the mounting frame and the cover plate contain ventilation mesh panels. A motor is mounted on the upper end of the ventilation mesh panel of the mounting frame. The motor output shaft passes through the ventilation mesh panel and is fixedly connected to a plug-in block. The upper end of the ventilation mesh panel of the cover plate is rotatably connected to the ventilation fan via a rotating shaft. The ventilation fan has a plug-in groove at its center that corresponds to the plug-in block. Two limiting mechanisms are slidably connected to both sides of the cover plate. Each limiting mechanism includes a limiting rod. The edge of the mounting frame has a horizontally arranged limiting groove corresponding to the limiting rod, and the limiting rod is inserted into the limiting groove.

[0007] Furthermore, the limiting mechanism also includes an adjusting rod, a spring, and a connecting plate. The adjusting rod is slidably connected to the side of the cover plate. The upper and lower ends of the side of the connecting plate are fixedly connected to the limiting rod and the adjusting rod, respectively. The spring is sleeved on the outside of the adjusting rod and its two ends are fixedly connected to the connecting plate and the cover plate, respectively.

[0008] Furthermore: the connecting plate is located inside the cover plate.

[0009] Furthermore, the ends of the two adjusting rods located on one side of the cover plate are fixedly connected by an adjusting plate, and a handle is fixedly connected to the outside of the adjusting plate.

[0010] Furthermore, the cross-section of the plug-in block is a regular polygon.

[0011] Furthermore, the mounting frame has a longitudinally arranged fixing groove on its edge.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] This patent allows the ventilation fan to be mounted on a cover plate and fixedly connected to the mounting frame by a limiting mechanism on the side of the cover plate. This makes it easy for personnel to remove the cover plate and clean the ventilation fan on the cover plate, thus preventing dust accumulation on the fan blades. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This utility model relates to a structure for an elevator car ventilation fan. Figure 1 .

[0016] Figure 2 This utility model relates to an explosion-proof structure for an elevator car's ventilation fan. Figure 1 .

[0017] Figure 3 This utility model relates to an explosion-proof structure for an elevator car's ventilation fan. Figure 2 .

[0018] Figure 4 This utility model relates to a structure for an elevator car ventilation fan. Figure 2 .

[0019] In the attached image:

[0020] 1. Mounting frame; 11. Ventilation mesh panel; 12. Motor; 13. Connecting block; 14. Limiting groove; 2. Cover plate; 3. Exhaust fan; 31. Connecting groove; 4. Limiting mechanism; 41. Limiting rod; 42. Adjusting rod; 43. Spring; 44. Connecting plate; 45. Adjusting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Combined with appendix Figure 1-4 This utility model provides a ventilation fan structure for an elevator car, including a mounting frame 1, a cover plate 2, and a ventilation fan 3. The mounting frame 1 has a longitudinally arranged fixing groove on its edge for fixing the mounting frame 1 with bolts. Both the mounting frame 1 and the cover plate 2 have ventilation mesh plates 11. A motor 12 is mounted on the upper end of the ventilation mesh plate 11 of the mounting frame 1. The output shaft of the motor 12 passes through the ventilation mesh plate 11 and is fixedly connected to a plug-in block 13. The plug-in block 13 has a regular polygonal cross-section. The upper end of the ventilation mesh plate 11 of the cover plate 2 is rotatably connected to the ventilation fan 3 via a rotating shaft. The ventilation fan 3 has a plug-in groove 31 at its center that corresponds to the plug-in block 13. The cover plate 2... Two limiting mechanisms 4 are slidably connected on both sides. Each limiting mechanism 4 includes a limiting rod 41. The edge of the mounting frame 1 is provided with a limiting groove 14 that is horizontally arranged and corresponds to the limiting rod 41. The limiting rod 41 is inserted into the limiting groove 14. During installation, a groove adapted to the mounting frame 1 is opened on the top of the elevator car. The mounting frame 1 is fixed with bolts. At this time, the plug-in block 13 is inserted into the plug-in groove 31. Then, the cover plate 2 is aligned with the mounting frame 1 and installed. The limiting rod 41 is inserted into the limiting groove 14 to complete the installation of the ventilation fan 3. After the motor 12 is started, it drives the ventilation fan 3 at the lower end of the plug-in block 13 to rotate and ventilate the elevator car.

[0023] Combined with appendix Figure 1-4The limiting mechanism 4 also includes an adjusting rod 42, a spring 43, and a connecting plate 44. The adjusting rod 42 is slidably connected to the side of the cover plate 2. The upper and lower ends of the side of the connecting plate 44 are fixedly connected to the limiting rod 41 and the adjusting rod 42, respectively. The connecting plate 44 is located inside the cover plate 2. The spring 43 is sleeved on the outside of the adjusting rod 42 and its two ends are fixedly connected to the connecting plate 44 and the cover plate 2, respectively. The ends of the two adjusting rods 42 located on one side of the cover plate 2 are fixedly connected by the adjusting plate 45. A handle is fixedly connected to the outside of the adjusting plate 45. After the cover plate 2 is installed, the connecting plate 44, under the action of the spring 43, holds the limiting rod 41 in the limiting groove 14 to keep the cover plate 2 fixed. When disassembling, by holding the handles on both sides of the cover plate 2 and pushing the adjusting rod 42, the limiting rod 41 is moved out of the limiting groove 14, and the cover plate 2 can be removed, thereby cleaning the ventilation fan 3 on the cover plate 2 and preventing dust accumulation on the fan blades of the ventilation fan 3.

[0024] The working principle of this application is as follows:

[0025] During installation, a slot corresponding to the mounting frame 1 is made on the top of the elevator car, and the mounting frame 1 is fixed with bolts. At this time, the plug block 13 is inserted into the plug slot 31. Then, the cover plate 2 is aligned with the mounting frame 1 and installed. The limiting rod 41 is inserted into the limiting groove 14 to complete the installation of the ventilation fan 3. After the motor 12 is started, it drives the ventilation fan 3 at the lower end of the plug block 13 to rotate and ventilate the elevator car. After the cover plate 2 is installed, the connecting plate 44 is held in the limiting groove 14 by the spring 43 to keep the cover plate 2 fixed. When disassembling, the adjusting rod 42 is pushed by holding the handles on both sides of the cover plate 2 to move the limiting rod 41 out of the limiting groove 14, so that the cover plate 2 can be removed, thereby cleaning the ventilation fan 3 on the cover plate 2 and preventing dust from accumulating on the fan blades of the ventilation fan 3.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A ventilation fan structure for an elevator car, characterized in that: The system includes a mounting frame (1), a cover plate (2), and a ventilation fan (3). Both the mounting frame (1) and the cover plate (2) are equipped with ventilation mesh plates (11). The upper end of the ventilation mesh plate (11) of the mounting frame (1) is equipped with a motor (12). The output shaft of the motor (12) passes through the ventilation mesh plate (11) and is fixedly connected to a plug-in block (13). The upper end of the ventilation mesh plate (11) of the cover plate (2) is rotatably connected to the ventilation fan (3) through a rotating shaft. The center of the ventilation fan (3) is provided with a plug-in groove (31) that is adapted to the plug-in block (13). Two limiting mechanisms (4) are slidably connected on both sides of the cover plate (2). The limiting mechanism (4) includes a limiting rod (41). The edge of the mounting frame (1) is provided with a limiting groove (14) that is horizontally arranged and corresponds to the limiting rod (41). The limiting rod (41) is inserted into the limiting groove (14).

2. The ventilation fan structure for an elevator car according to claim 1, characterized in that: The limiting mechanism (4) also includes an adjusting rod (42), a spring (43), and a connecting plate (44). The adjusting rod (42) is slidably connected to the side of the cover plate (2). The upper and lower ends of the side of the connecting plate (44) are fixedly connected to the limiting rod (41) and the adjusting rod (42), respectively. The spring (43) is sleeved on the outside of the adjusting rod (42) and its two ends are fixedly connected to the connecting plate (44) and the cover plate (2), respectively.

3. The ventilation fan structure for an elevator car according to claim 2, characterized in that: The connecting plate (44) is located inside the cover plate (2).

4. The ventilation fan structure for an elevator car according to claim 2, characterized in that: The ends of the two adjusting rods (42) located on one side of the cover plate (2) are fixedly connected by an adjusting plate (45), and a handle is fixedly connected to the outside of the adjusting plate (45).

5. The ventilation fan structure for an elevator car according to claim 1, characterized in that: The cross-section of the plug-in block (13) is a regular polygon.

6. The ventilation fan structure for an elevator car according to claim 1, characterized in that: The mounting frame (1) has a longitudinally arranged fixing groove on its edge.

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