Compact handle rotating shaft

Abstract

The utility model discloses a compact type handle rotating shaft which comprises a rotating shaft body, a handle is fixed to one end of the rotating shaft body in a welded mode, ventilation fan blades are fixed to the outer wall of the rotating shaft body through bolts, a gear is fixed to the outer wall of the rotating shaft body in a welded mode, and a rack is arranged on the top of the gear. The gear is meshed with the rack, a gas collecting hood is arranged at one end of the rotating shaft body, one side of the gas collecting hood protrudes outwards, one end of the gas collecting hood extends outwards to be provided with a mounting flange, and the outer diameter of the gear is smaller than the inner diameter of the gas collecting hood. The outer diameter of the ventilation fan blades is larger than the inner diameter of the gas collecting hood, one end of the rack is connected with a bolt, the bolt is of a pinnacle arc-shaped structure, and gas blocking blades are evenly and rotationally installed on the side, protruding outwards, of the gas collecting hood through hinges.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical components, in particular to a compact handle shaft. Background Art

[0002] Underground storage rooms are usually confined spaces. If the air is not pumped out before opening the door, the following hidden dangers may occur: Suffocation: Due to the lack of air circulation, the oxygen content in the storage room will gradually decrease, causing suffocation of personnel. Explosion or fire: If there are flammable gases or substances in the storage room, it may cause an explosion or fire when the door is opened. Toxic gas poisoning: If there are toxic gases or substances in the storage room, it may cause poisoning when the door is opened.

[0003] However, the existing door handle design does not take this into consideration, and the staff may habitually ignore the hidden dangers and directly open the door to enter, and the high concentration of harmful gases will have an adverse effect on people. Therefore, it is necessary to design a compact handle shaft for ventilation when opening the door. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a compact handle shaft, comprising a shaft body, one end of which is fixed with a handle by welding, and an outer wall of which is fixed with ventilation blades by bolts.

[0005] According to the above technical solution, a gear is fixed to the outer wall of the rotating shaft body by welding, a rack is arranged on the top of the gear, and the gear and the rack are meshed with each other.

[0006] According to the above technical solution, an air collecting hood is provided at one end of the rotating shaft body, one side of the air collecting hood is shaped to protrude outward, and a mounting flange is extended outward at one end of the air collecting hood. The outer diameter of the gear is smaller than the inner diameter of the air collecting hood, and the outer diameter of the ventilation blade is larger than the inner diameter of the air collecting hood.

[0007] According to the above technical solution, one end of the rack is connected to a bolt, and the bolt is a pointed arc structure.

[0008] According to the above technical solution, the side of the air collecting hood protruding outward is evenly installed with air blocking blades through hinge rotation, and the side of the air collecting hood protruding outward is evenly opened with air vents, and the air blocking blades cover the air vents, and the air blocking blades open and close toward the inner wall of the air collecting hood.

[0009] According to the above technical solution, torsion springs are connected between the two ends of the air-blocking blade and the inner wall of the air collecting hood.

[0010] Compared with the prior art, the beneficial effect achieved by the utility model is that when the handle is turned, the ventilation fan blades will rotate and draw air, drawing air from the space on the other side of the door to this side of the door, making it convenient for the staff to define the composition of the air, and at the same time reminding the staff whether the air composition inside is harmful, preventing the door from being opened directly to inhale a large amount of harmful gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0014] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0015] In the figure: 1, shaft body; 2, handle; 3, ventilation fan blade; 4, gear; 5, air collecting cover; 6, rack; 61, door bolt; 51, air blocking blade; 52, torsion spring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3 The utility model provides a technical solution: a compact handle shaft, including a shaft body 1, a handle 2 is fixed to one end of the shaft body 1 by welding, and a ventilation fan blade 3 is fixed to the outer wall of the shaft body 1 by bolts. When the door needs to be opened, the handle 2 is turned by hand, which will drive the shaft body 1 to rotate, and the ventilation fan blade 3 will pump gas with the synchronous rotation;

[0018] The outer wall of the shaft body 1 is fixed with a gear 4 by welding, and a rack 6 is arranged on the top of the gear 4. The gear 4 and the rack 6 are meshed with each other. When the shaft body 1 rotates, the gear 4 is driven to rotate, and at this time, the gear 4 is meshed with the rack 6 and moves, so that the rack 6 is driven to move while the shaft body 1 is driven to rotate;

[0019] An air collecting hood 5 is provided at one end of the rotating shaft body 1. One side of the air collecting hood 5 is shaped to protrude outward. A mounting flange is extended outward at one end of the air collecting hood 5. The outer diameter of the gear 4 is smaller than the inner diameter of the air collecting hood 5. The outer diameter of the ventilation blade 3 is larger than the inner diameter of the air collecting hood 5. When the ventilation blade 3 rotates, negative pressure is generated on the side adjacent to the air collecting hood 5. At this time, air is pumped from the air collecting hood 5 to the other side of the ventilation blade 3. The mounting flange is used to expand the contact area with the indoor space, so that gas can be inhaled more comprehensively.

[0020] One end of the rack 6 is connected to a bolt 61, which is a pointed arc structure. When the rack 6 moves, it drives the bolt 61 to slide. The bolt 61 is initially held against the door frame, and is retracted into the door after moving. At this time, the door can be opened.

[0021] The side of the air collecting cover 5 protruding outward is evenly equipped with air blocking blades 51 through hinge rotation. The side of the air collecting cover 5 protruding outward is evenly provided with air vents, and the air blocking blades 51 cover the air vents. The air blocking blades 51 open and close toward the inner wall of the air collecting cover 5. When in use, the air blocking blades 51 are in an open state for easy ventilation. When not in use, the air blocking blades 51 are closed to prevent indoor and outdoor air circulation.

[0022] A torsion spring 52 is connected between the two ends of the air-blocking blade 51 and the inner wall of the air collecting hood 5. Since the air-blocking blade 51 is in a closed state at first and then opens due to negative pressure, the torsion spring 52 twists and stores torque. When released, the torsion spring 52 twists in the opposite direction and makes the air-blocking blade 51 closed again.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A compact handle shaft, comprising a shaft body (1), characterized in that: A handle (2) is fixed to one end of the rotating shaft body (1) by welding, and a ventilation blade (3) is fixed to the outer wall of the rotating shaft body (1) by bolts.

2. A compact handle shaft according to claim 1, characterized in that: A gear (4) is fixed to the outer wall of the rotating shaft body (1) by welding, a rack (6) is arranged on the top of the gear (4), and the gear (4) and the rack (6) are meshed with each other.

3. A compact handle shaft according to claim 2, characterized in that: An air collecting hood (5) is provided at one end of the rotating shaft body (1); one side of the air collecting hood (5) is shaped to protrude outward; one end of the air collecting hood (5) is provided with a mounting flange extending outward; the outer diameter of the gear (4) is smaller than the inner diameter of the air collecting hood (5); and the outer diameter of the ventilation blade (3) is larger than the inner diameter of the air collecting hood (5).

4. A compact handle shaft according to claim 3, characterized in that: One end of the rack (6) is connected to a bolt (61), and the bolt (61) is a pointed arc-shaped structure.

5. A compact handle shaft according to claim 4, characterized in that: An air-blocking blade (51) is evenly mounted on the outwardly protruding side of the air collecting hood (5) through a hinged rotation, and air holes are evenly opened on the outwardly protruding side of the air collecting hood (5), and the air-blocking blade (51) covers the air holes, and the air-blocking blade (51) opens and closes toward the inner wall of the air collecting hood (5).

6. A compact handle shaft according to claim 5, characterized in that: Torsion springs (52) are connected between the two ends of the air-blocking blade (51) and the inner wall of the air collecting hood (5).

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