A non-powered ventilation device for building structures

Abstract

This utility model discloses a non-powered ventilation device for building structures, including a base plate and a waist belt. The waist belt is fixedly mounted on the base plate by mounting feet. The inner wall of the waist belt has several intersecting reinforcing brackets, with a central shaft in the middle of each bracket. A frustum-shaped bearing is mounted on the central shaft, and a limiting protrusion is mounted on the frustum-shaped bearing. A waist body is located above the waist belt, and blades are fixedly mounted on the outer wall of the waist body. A mounting bracket is located in the middle of the waist belt, with one end fixedly mounted on the inner wall of the waist belt and the other end having a limiting groove. The limiting protrusion and the limiting groove engage with each other. In this utility model, the top of the blades has a cap with a bearing hole, allowing the blades and waist body to be mounted above the waist belt by passing the central shaft through the bearing hole from top to bottom.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology, and in particular to a non-powered ventilation device for building structures. Background Technology

[0002] Building structures often utilize non-powered ventilation devices when ventilation is required. These devices, also known as natural ventilators, leverage natural winds to drive the turbine rotation of a fan and utilize the principle of indoor and outdoor air convection to accelerate and transform any parallel airflow into a vertical upward airflow. This centrifugal force and negative pressure effect then expel indoor air. However, existing non-powered ventilation devices typically consist of a base plate, a belt, a body, and blades. The body and blades are an integrated structure, with the belt and body fixed together by a central shaft. The belt is riveted to the base. When the blades of a non-powered ventilation device are damaged and need replacement, the rivets must be removed before replacing the blades. Replacing blades with the blades in this integrated device is not easy. Therefore, there is a need for a non-powered ventilation device for building structures. Utility Model Content

[0003] The purpose of this invention is to solve the problems of difficult blade replacement in the prior art, and to propose a non-powered ventilation device for building structures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a non-powered ventilation device for building structures, comprising a base plate and a waist belt. The waist belt is fixedly mounted on the base plate by mounting feet. The inner wall of the waist belt is provided with several intersecting reinforcing brackets. A central shaft is provided in the middle of the reinforcing brackets. A frustum-shaped bearing is provided on the central shaft. A limiting protrusion is provided on the frustum-shaped bearing. A waist body is provided above the waist belt. Blades are fixedly mounted on the outer wall of the waist body. A mounting bracket is provided in the middle of the waist belt. One end of the mounting bracket is fixedly mounted on the inner wall of the waist belt. The other end of the mounting bracket is provided with a limiting groove. The limiting protrusion and the limiting groove are engaged with each other.

[0005] More preferably, the frustum-shaped bearing includes an inner bearing, an outer bearing, a roller, and a limiting ring. The roller is movably mounted on the outer surface of the inner bearing, the outer bearing is sleeved on the inner bearing, the roller is located between the inner bearing and the thread, and the limiting ring is located on the outer wall of the outer bearing.

[0006] In a further preferred embodiment, a fixed disk is fixedly mounted through the central shaft, the fixed disk has a circular hole, a rotating ball is provided in the circular hole, the fixed disk is located below the frustum-shaped bearing, and the top of the rotating ball abuts against the bottom surface of the limiting ring.

[0007] More preferably, the top of the central shaft is provided with a cylindrical bearing, the top of the blade is provided with a cap, the cap has a bearing hole in the middle, and the cylindrical bearing is disposed in the bearing hole.

[0008] More preferably, the outer surface of the top cap is provided with external threads, and a cap is threadedly connected to the top of the top cap.

[0009] The beneficial effects of this utility model are as follows: The top of the blade of the device is provided with a cap, and a bearing hole is opened in the cap. The blade and waist body can be installed above the belt by passing through the central shaft from top to bottom through the bearing hole. The central shaft is provided with a frustum-shaped bearing, and the frustum-shaped bearing is provided with a limiting protrusion. During installation, because the mounting bracket on the waist body is provided with a limiting slot, when the mounting bracket is lowered, the limiting slot will engage with the limiting protrusion, and the blade and waist body will be mounted and locked on the frustum-shaped bearing, which facilitates the rotation of the blade. During disassembly, only the blade needs to be pulled out, and the limiting slot will separate from the limiting protrusion, so that the blade can be replaced. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the structure of the belt after installation.

[0012] Figure 3 This is a schematic diagram of the structure of the frustum-shaped bearing of this utility model;

[0013] Figure 4 This is a schematic diagram of the structure of the fixing disc of this utility model;

[0014] Figure 5 This is a schematic diagram of the structure of the belt of this utility model after it is inserted into the central shaft;

[0015] Figure 6 This is an exploded view of the frustum-shaped bearing in this utility model;

[0016] Figure 7 This is a schematic diagram of the waist and blades of this utility model.

[0017] In the diagram: 1. Base plate; 2. Waist belt; 3. Mounting foot; 4. Reinforcing bracket; 5. Waist body; 6. Mounting bracket; 601. Limiting slot; 7. Frustum-shaped bearing; 701. Inner bearing; 702. Outer bearing; 703. Roller; 704. Limiting ring; 705. Limiting protrusion; 8. Fixing disc; 801. Rotating ball; 9. Blade; 10. Top cap; 11. Bearing hole; 12. Cylindrical bearing. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1 to 7 A non-powered ventilation device for building structures includes a base plate 1 and a waist belt 2. The waist belt 2 is fixedly mounted on the base plate 1 by mounting feet 3. The inner wall of the waist belt 2 is provided with several intersecting reinforcing brackets 4. A central shaft is provided in the middle of each reinforcing bracket 4, and a frustum-shaped bearing 7 is provided on the central shaft. A limiting protrusion 705 is provided on the frustum-shaped bearing 7. A waist body 5 is provided above the waist belt 2, and blades 9 are fixedly mounted on the outer wall of the waist body 5. A mounting bracket 6 is provided in the middle of the waist belt 2, and one end of the mounting bracket 6 is fixedly mounted on the inner wall of the waist belt 2. The other end is provided with a limiting slot 601. The limiting protrusion 705 and the limiting slot 601 are engaged with each other. When the blade 9 and waist body 5 are installed downwards, the limiting slot 601 of the mounting bracket 6 inside the waist body 5 will be engaged with the limiting protrusion 705 of the frustum-shaped bearing 7. First, it serves to install the blade 9 and waist body 5. Second, it allows the blade 9 and waist body 5 to be blown and rotated by the wind at any time to expel indoor air. At the same time, the blade 9 is easy to disassemble and replace. Just pull the blade 9 upwards and move the blade 9 upwards from the central shaft to replace the blade 9.

[0020] Furthermore, the frustum-shaped bearing 7 includes an inner bearing 701, an outer bearing 702, a roller 703, and a limiting ring 704. The roller 703 is movably mounted on the outer surface of the inner bearing 701, the outer bearing 702 is sleeved on the inner bearing 701, the roller 703 is located between the inner bearing 701 and the thread, and the limiting ring 704 is located on the outer wall of the outer bearing 702. The frustum-shaped bearing can better bear force and is used to support the mounting bracket 6, the blade 9, and the waist 5. While providing support, the blade 9 and the waist 5 can also rotate.

[0021] Furthermore, a fixed disk 8 is fixed through the central shaft, and a circular hole is opened on the fixed disk 8. A rotating ball 801 is placed in the circular hole. The fixed disk 8 is located below the frustum-shaped bearing 7. The top of the rotating ball 801 abuts against the bottom surface of the limiting ring 704. When the rotating ball 801 rotates, the limiting ring 704 of the frustum-shaped bearing 7 reduces the resistance encountered by the blade 9 when it rotates, thereby improving the ventilation efficiency.

[0022] Furthermore, a cylindrical bearing 12 is provided at the top of the central shaft, and a top cap 10 is provided at the top of the blade 9. A bearing hole 11 is provided in the middle of the top cap 10, and the cylindrical bearing 12 is provided in the bearing hole 11. The cylindrical bearing 12 is used to reduce the resistance encountered by the top cap 10 when it rotates.

[0023] Furthermore, the outer surface of the top cap 10 is provided with external threads, and a cap is threadedly connected to the top of the top cap 10. The cap is threaded onto the top cap 10 and provides simple limiting after the blade 9 and waist 5 are installed, preventing the blade 9 and waist 5 from being pulled out of the central shaft.

[0024] In this invention, the blade 9 and the waist body 5 are fixedly connected. The top cap 10 above the blade 9 has a bearing hole 11. The blade 9 and the waist body 5 are mounted on the frustum-shaped bearing 7 of the central shaft from top to bottom. The central shaft passes through the bearing hole 11. When the blade 9 and the waist body 5 are installed downwards, the limiting slot 601 of the mounting bracket 6 inside the waist body 5 will be precisely engaged with the limiting protrusion 705 of the frustum-shaped bearing 7. When the wind blows, the blade 9 will be moved by the opening of the frustum-shaped bearing 7. The device begins to rotate, expelling indoor air and providing ventilation. Below the frustum-shaped bearing 7, there is a fixed plate 8 with a rotating ball 801. The limiting ring 704 of the frustum-shaped bearing 7 rotates with the rotating ball 801, reducing the resistance encountered by the blade 9 when it rotates. The cap is then threaded onto the top cap 10 to complete the installation. The device is easy to install, and the blade 9 is also easy to disassemble and replace. Simply unscrew the cap, pull the blade 9 upwards, and the blade 9 can be moved upwards from the central shaft to replace the blade 9.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A non-powered ventilation device for building structures, comprising a base plate (1) and a waist belt (2), wherein the waist belt (2) is fixedly mounted on the base plate (1) by mounting feet (3), characterized in that: The inner wall of the waist belt (2) is provided with several intersecting reinforcing brackets (4). The reinforcing brackets (4) are provided with a central shaft in the middle. The central shaft is provided with a frustum-shaped bearing (7). The frustum-shaped bearing (7) is provided with a limiting protrusion (705). The waist belt (2) is provided with a waist body (5) above it. The outer wall of the waist body (5) is fixedly installed with blades (9). The waist belt (2) is provided with a mounting bracket (6) in the middle. One end of the mounting bracket (6) is fixedly installed on the inner wall of the waist belt (2). The other end of the mounting bracket (6) is provided with a limiting slot (601). The limiting protrusion (705) and the limiting slot (601) are interlocked.

2. The non-powered ventilation device for building structures according to claim 1, characterized in that, The frustum-shaped bearing (7) includes an inner bearing (701), an outer bearing (702), a roller (703), and a limiting ring (704). The roller (703) is movably mounted on the outer surface of the inner bearing (701), the outer bearing (702) is sleeved on the inner bearing (701), the roller (703) is located between the inner bearing (701) and the thread, and the limiting ring (704) is located on the outer wall of the outer bearing (702).

3. The non-powered ventilation device for building structures according to claim 2, characterized in that, A fixed plate (8) is fixed through the central shaft. A circular hole is provided on the fixed plate (8). A rotating ball (801) is provided in the circular hole. The fixed plate (8) is located below the frustum-shaped bearing (7). The top of the rotating ball (801) abuts against the bottom surface of the limiting ring (704).

4. The non-powered ventilation device for building structures according to claim 3, characterized in that, The top of the central shaft is provided with a cylindrical bearing (12), the top of the blade (9) is provided with a cap (10), the top cap (10) has a bearing hole (11) in the middle, and the cylindrical bearing (12) is located in the bearing hole (11).

5. The non-powered ventilation device for building structures according to claim 4, characterized in that, The outer surface of the top cap (10) is provided with external threads, and a cap is threadedly connected to the top of the top cap (10).

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