Door panel opening and closing mechanism and ventilation device

Abstract

The utility model discloses a door plate switch mechanism and ventilation device, wherein the door plate switch mechanism includes frame and door plate, the push rod for push -and -pull door plate is hinged on the frame, and the extension end of push rod is connected with guide screw, and the shaft pin is relatively rotatable and is arranged on the door plate, and the guide screw transversely passes through the shaft pin to drive the door plate to open and close through the shaft pin, and the outer end of guide screw is equipped with elastic part, and the shaft pin is located between elastic part and the extension end of push rod, and the elastic part is used for exerting elastic force to the door plate when the push rod pulls the door plate and closes the frame, and the door plate is protected from being damaged. The utility model discloses a ventilation device, including the door plate switch mechanism of the utility model. The technical scheme of the utility model has the advantages of reducing the size error influence, ensuring that the door plate can be opened and closed smoothly, ensuring that the door plate can be completely closed, effectively preventing water and dust, avoiding excessive closure and deformation, and prolonging the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of mechanical structures, and in particular to a door panel opening and closing mechanism and a ventilation device. Background Technology

[0002] Currently, ventilation systems in engineering projects typically use sheet metal frames with corresponding door panels. To enable the door panels to open and close, a switching mechanism needs to be designed to connect the frame and the door panels.

[0003] Traditional door opening and closing mechanisms typically rely on electric push rods to control the opening and closing of door panels. When there is no ventilation requirement, the electric push rod closes the door panel by pulling. At this point, the door panel should naturally reach the closed position, ensuring a seal. However, due to certain limitations in the control of electric push rods, the rod continues to exert force on the door panel even after it has fully closed, causing the pulling force applied by the rod to exceed the actual requirement. This phenomenon often occurs in the final stage of door closing, when the push rod's travel has not completely stopped, but it continues to pull the door panel. This excessive pulling force not only poses a risk of door panel deformation but may also damage the electric push rod. Prolonged excessive use of pulling force can lead to wear or overloading of the push rod's internal components, thus shortening its lifespan. In the most serious cases, damage to the push rod or door panel may occur, affecting the normal operation of the ventilation system and increasing maintenance and repair costs. To prevent the push rod from applying excessive pulling force to the door panel, causing deformation, the closing point of the door panel is usually advanced. While this avoids the risk of excessive stretching, it also makes it prone to not closing completely, resulting in poor sealing and failing to meet the IP66 protection requirements. The IP66 protection rating requires the door panel to be completely waterproof and dustproof when closed, which is crucial for the proper functioning of the ventilation system. Desiring a completely closed door to ensure IP66 sealing might lead to over-tightening or even over-closing. This can not only cause door panel deformation, affecting appearance and structural stability, but also put excessive pressure on the push rod and other core components, shortening the equipment's lifespan or even causing damage. Utility Model Content

[0004] The purpose of this invention is to provide a door panel opening and closing mechanism and ventilation device that can ensure the door panel maintains its IP66 protection rating when fully closed, while avoiding damage caused by over-closing.

[0005] The door panel opening and closing mechanism of this utility model includes a frame and a door panel hinged to the frame. A push rod for pushing and pulling the door panel is hinged to the frame. A guide screw is connected to the extended end of the push rod. A pivot pin is rotatably provided on the door panel. The guide screw passes laterally through the pivot pin. An elastic component is installed at the outer end of the guide screw. The pivot pin is located between the elastic component and the extended end of the push rod. The push rod is used to drive the door panel to open and close through the guide screw and the pivot pin. The elastic component is used to apply a spring force to the door panel when the push rod pulls the door panel to close with the frame, so as to protect the door panel from damage.

[0006] The door panel opening and closing mechanism of this utility model includes a bracket fixedly installed on the door panel, a mounting hole provided on the bracket, a pin passing through the mounting hole, and a limiting cotter pin provided at one end of the pin for limiting the pin, thereby allowing the pin to be rotatably mounted on the door panel.

[0007] In the door panel opening and closing mechanism of this utility model, the extended end of the push rod is provided with a threaded hole, and the guide screw extends into the threaded hole to connect to the push rod.

[0008] In the door panel opening and closing mechanism of this utility model, a support washer is fitted on the guide screw, and the support washer is located between the elastic component and the outer side of the shaft pin.

[0009] The door panel opening and closing mechanism of this utility model includes a nut and an elastic washer fitted on the guide screw. The nut is located between the extended end of the push rod and the outer side of the shaft pin, and the elastic washer is located between the nut and the extended end of the push rod.

[0010] The ventilation device of this utility model includes the door panel opening and closing mechanism of this utility model.

[0011] The advantages of this utility model's technical solution are: reducing the impact of dimensional errors and ensuring that the door panel can be opened and closed smoothly; ensuring that the door panel can be fully closed, thereby meeting the sealing requirements of IP66 protection level and effectively preventing water and dust; avoiding excessive closing and deformation, extending the service life of the equipment, and making the opening and closing of the door panel more precise and stable, thereby improving the overall reliability and stability of the equipment. Attached Figure Description

[0012] Figure 1 This is a perspective view of the structural schematic diagram of the door panel opening and closing mechanism of this utility model;

[0013] Figure 2 It is a three-dimensional view of the structural schematic diagram of the door panel opening and closing mechanism after the door panel is removed;

[0014] Figure 3This is an exploded view of the structural schematic diagram of the door panel opening and closing mechanism of this utility model;

[0015] Figure 4 This is a top-view perspective view of the structural schematic diagram of the door panel opening and closing mechanism of this utility model. Detailed Implementation

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the door panel opening and closing mechanism 100 of this utility model includes a frame 1 and a door panel 2 hinged to the frame 1. A push rod 3 for pushing and pulling the door panel is hinged to the frame 1. A guide screw 4 is connected to the extended end of the push rod. A pivot pin 5 is rotatably provided on the door panel. The guide screw passes laterally through the pivot pin 5. An elastic component is installed at the outer end of the guide screw. The pivot pin is located between the elastic component and the extended end of the push rod. The push rod is used to drive the door panel to open and close through the guide screw and the pivot pin. The elastic component is used to apply elastic force to the door panel when the push rod pulls the door panel to close with the frame, so as to protect the door panel from damage.

[0017] The elastic component can be a spring, and in this embodiment, it is a disc spring assembly 6. The disc spring assembly 6 is fitted onto the outer end of the guide screw.

[0018] The door panel opening and closing mechanism of this utility model includes a bracket 7 fixedly mounted on the door panel, and mounting holes 8 provided on the bracket. The bracket has multiple pairs of opposing mounting holes 8. A pin 5 passes through one pair of the mounting holes, and one end of the pin has a limiting cotter pin 10 for limiting the pin's position, thereby allowing the pin to be rotatably mounted on the door panel.

[0019] The design of multiple pairs of oppositely arranged mounting holes 8 allows the opening and closing angle of the door panel to be adjusted to meet the diverse ventilation needs of the ventilation device.

[0020] In the door panel opening and closing mechanism of this utility model, the extended end of the push rod is provided with a threaded hole 11, and the guide screw extends into the threaded hole to connect to the push rod.

[0021] In the door panel opening and closing mechanism of this utility model, a support washer 12 is sleeved on the guide screw, and the support washer is located between the elastic component and the outer side of the shaft pin.

[0022] In the door panel opening and closing mechanism of this utility model, a nut 13 and an elastic washer 14 are fitted on the guide screw. The nut 13 is located between the extended end of the push rod and the outer side of the shaft pin, and the elastic washer is located between the nut and the extended end of the push rod.

[0023] The ventilation device of this utility model includes the door panel opening and closing mechanism of this utility model.

[0024] This utility model's door panel opening and closing mechanism solves the aforementioned technical problems by employing a flexible connection structure. By using a flexible connection structure, the connection between the push rod and the door panel is no longer a rigid, fixed mechanical connection, but rather a flexible connection that can be adjusted according to actual conditions. This design effectively avoids the impact of dimensional errors on the door panel's opening and closing accuracy, allowing for more precise adjustment of the force on the panel, thus ensuring the tightness of the door panel's closure while preventing over-closing and door panel deformation. In short, traditional rigid mechanical connections often fail to achieve ideal door panel opening and closing control. By introducing flexible connection technology, the door panel opening and closing problem of ventilation devices can be effectively solved. This not only meets increasingly stringent protection requirements but also significantly improves the reliability and stability of the equipment, promoting the development and innovation of industry technology.

[0025] The opening and closing of the door panel corresponds to the opening and closing of the ventilation device. The push rod bracket is used for the fixed connection between the push rod and the door panel. The push rod is an electric push rod.

[0026] The guide screw is used to guide the disc spring assembly. The guide screw moves relative to the pin when the door panel is opened and closed.

[0027] Disc springs are used to provide support when the guide screw and the pin are close to each other.

[0028] Support shims are used to support elastic components, changing the point contact between the disc spring assembly and the pin to a surface contact.

[0029] Nuts and elastic washers are used to help guide screws to be fixed on push rods.

[0030] The push rod is electrically driven, with its bottom hinged to the frame 1 and its other end able to extend and retract, thereby pushing the door panel open and close.

[0031] The door panel opening and closing mechanism of this utility model is part of a ventilation device. The bottom of the push rod is hinged to the frame, and the door panel is connected to the frame via hinges. The push rod's function is to automatically open and close the door panel. When the push rod extends, its extended end pushes the door panel outward, completing the opening action. The door panel is pushed by the push rod, forming a ventilation opening, allowing airflow and ensuring the normal operation of the ventilation device. Conversely, when the push rod retracts, the pulling force of the push rod causes the door panel to rotate inward, tightly closing the door panel and frame, preventing airflow, and closing the door panel.

[0032] When the door panel is closed, the disc spring is compressed, providing a buffer for the door panel seal and ensuring a reliable seal between the door panel and the ventilation device. When the push rod opens the door panel, the compressed disc spring is released, and the nut ultimately pushes the pin, thus moving the door panel and opening it. When the push rod closes the door panel, it pulls the guide screw, which in turn moves the elastic component. The elastic component pushes the support washer, which in turn pushes the pin, ultimately causing the door panel to close.

[0033] When the door panel and frame are in place, the push rod continues to move. Because the elastic component can undergo elastic deformation, the door panel will not be forcibly stretched and deformed as the push rod continues to move. The tension generated by the continued movement of the push rod is absorbed by the deformation of the elastic component, and the elastic force generated by the deformation of the elastic component acts on the door panel to make the door panel close reliably.

[0034] What would happen if the door panel opening and closing mechanism of this utility model were not available?

[0035] When the push rod pulls the door panel to close, and the door panel is fully closed to the main body, the push rod needs to continue pulling the door panel to ensure sealing performance. However, because the device uses a rigid mechanical connection, the deformation of the push rod during continued retraction cannot be effectively compensated. At this time, the continued retraction of the push rod will put excessive pressure on the door panel, causing the door panel to deform or the push rod to stall.

[0036] Because the rigid connection between the push rod and the door panel cannot adapt to this deformation, it may eventually lead to damage to the entire ventilation system. The rigid mechanical connection between the push rod and the door panel lacks flexible adjustment and cannot automatically adapt to subtle changes during movement, thus affecting the stability of the door panel opening and closing mechanism and the reliability of long-term operation.

[0037] The ventilation device of this utility model adopts a flexible connection scheme, which effectively compensates for the errors caused by sheet metal bending, welding and other processes.

[0038] This utility model's ventilation device employs a flexible connection scheme to ensure the door panel closes precisely, guaranteeing both airtightness and preventing door panel deformation and damage to transmission components caused by over-closing. The flexible connection significantly improves the reliability and stability of the equipment, while reducing the risk of malfunctions due to errors. Furthermore, the flexible connection scheme effectively extends the equipment's service life and reduces maintenance costs.

[0039] This utility model's ventilation device not only ensures effective ventilation but also provides the industry with a more reliable and stable solution.

[0040] The door opening and closing mechanism of this utility model effectively eliminates the risk of damage to the entire ventilation device caused by the door panel deforming or the push rod becoming stuck due to the continued movement of the push rod during the closing process.

[0041] The advantages of the door panel opening and closing mechanism of this utility model are mainly reflected in the following aspects:

[0042] 1) Reduce the impact of dimensional errors: The connection between the push rod and the door panel is no longer a fixed rigid connection, but can be adjusted according to the actual situation. This effectively alleviates the impact of dimensional errors caused by sheet metal processing and welding processes on the opening and closing accuracy of the door panel, ensuring that the door panel can open and close smoothly.

[0043] 2) Improved sealing performance: The flexible connection can automatically adjust the pull of the push rod to ensure that the door panel can be completely closed, thereby meeting the sealing requirements of IP66 protection level, and effectively preventing water and dust, which is very important for the normal use of ventilation devices;

[0044] 3) Avoid over-closing and deformation: The flexible connection design can prevent the door panel from closing too tightly. The fit between the door panel and the ventilation device frame is within a reasonable force range, avoiding door panel deformation and reducing the impact on appearance and structural stability. At the same time, the push rod and other core components will not be subjected to excessive pressure, extending the service life of the equipment.

[0045] 4) Enhanced equipment reliability: Because flexible connections can adapt to the actual conditions of the door panel, the opening and closing of the door panel is more precise and stable, thereby improving the overall reliability and stability of the equipment.

[0046] 5) Reduce costs: Although new technologies and designs are required, in the long run, it can reduce the repair and replacement costs caused by door panel deformation and push rod damage, and reduce the overall equipment maintenance costs.

[0047] 6) Driving technological innovation: This innovative design not only solves the problems in existing technologies, but also promotes the technological development and innovation of the ventilation equipment industry, which may lead to more similar solutions and further optimize the design of other products.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A door panel opening and closing mechanism, characterized in that, The device includes a frame and a door panel hinged to the frame. A push rod for pushing and pulling the door panel is hinged to the frame. A guide screw is connected to the extended end of the push rod. A pivot pin is rotatably provided on the door panel. The guide screw passes laterally through the pivot pin. An elastic member is installed at the outer end of the guide screw. The pivot pin is located between the elastic member and the extended end of the push rod. The push rod is used to drive the door panel to open and close via the guide screw and the pivot pin. The elastic member is used to apply a spring force to the door panel when the push rod pulls the door panel to close with the frame, so as to protect the door panel from damage.

2. The door panel opening and closing mechanism as described in claim 1, characterized in that, A bracket is fixedly installed on the door panel. The bracket has mounting holes, and the pin passes through the mounting holes. One end of the pin has a limiting cotter pin for limiting the pin, so that the pin can be rotatably installed on the door panel.

3. The door panel opening and closing mechanism as described in claim 2, characterized in that, The extended end of the push rod is provided with a threaded hole, and the guide screw extends into the threaded hole to connect to the push rod.

4. The door panel opening and closing mechanism as described in claim 3, characterized in that, A support washer is fitted onto the guide screw, and the support washer is located between the elastic component and the outer side of the shaft pin.

5. The door panel opening and closing mechanism as described in claim 4, characterized in that, A nut and an elastic washer are fitted onto the guide screw. The nut is located between the extended end of the push rod and the outer side of the shaft pin, and the elastic washer is located between the nut and the extended end of the push rod.

6. A ventilation device, characterized in that, Includes the door panel opening and closing mechanism as described in any one of claims 1-5.

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