Rivet The Vent Plug Screw

Product introduction

The pressure riveting vent plug screw is an innovative fastener that integrates pressure riveting installation and pressure balancing functions. The core of its design is that the lower part is a tapered thread, and the upper part is a plug body with built-in micro ventilation channels. During installation, the tapered thread segment is squeezed into the preset hole of the thin plate by pressure, and the plastic deformation of the material is used to form a high-strength internal thread connection with excellent torsion resistance. At the same time, the ventilation structure on the top allows the gas pressure generated by temperature changes inside the casing to balance with the external atmosphere, effectively preventing seal failure or lubricant leakage caused by internal pressure accumulation, while blocking the intrusion of external liquid and dust. This design cleverly combines solid mechanical connection with reliable pressure regulation function into one, and is widely used in sheet metal shell equipment such as gearboxes, motor casings, and hydraulic oil tanks that require both structural fastening and internal and external pressure balance.

Product Features

1. Dual-function integrated design: Integrating solid mechanical fastening and reliable pressure balancing functions into a single component. There is no need to install vent plugs and threaded fasteners separately, which simplifies the product structure and saves design and installation costs.

2. Efficient pressure riveting installation and excellent torsion resistance: The lower tapered thread is specially designed for pressure riveting. During installation, it is squeezed into the prefabricated hole through pressure, causing the surrounding material to flow plastically and embed in the thread. This not only enables quick installation, but also forms a connection with extremely high torsion resistance, effectively preventing loosening in a vibrating environment.

3. Reliable "breathing" and sealing protection: The precision micropores or labyrinth channels on the top can effectively balance the internal and external pressure differences caused by thermal expansion and contraction of the housing, preventing lubricating oil leakage and seal damage. At the same time, its structure can effectively block the intrusion of external water, oil and dust, and protect the internal cleanliness of the equipment.

4. Enhanced structural integrity: Compared with traditional welding screws, the pressure riveting process does not produce thermal deformation. The tapered threads engage closely with the base material, providing the thin plate structure with an internal thread connection point that is much stronger than the plate itself, enhancing the overall structural reliability.

Product application

1. Reducer and gearbox: Prevent internal pressure accumulation due to rising oil temperature during operation, causing lubricating oil leakage or sealing ring damage, while providing a solid threaded mounting point.

2. Engine and gearbox housing: balances internal pressure, ensures sealing integrity, and serves as a fixed base for the detection port or oil filling port.

3. Hydraulic oil tank and valve block: While ensuring that the tank is sealed and leak-proof, it can effectively release the hot air pressure generated during the operation of the hydraulic system, avoid the formation of vacuum or positive pressure, and ensure the smooth operation of the system.

4. Motor housing: Balances the pressure changes caused by motor start-stop and temperature rise to prevent moisture inhalation. Its riveting structure provides reliable installation on thin-walled motor housings.

5. Outdoor cabinets and control boxes: used for waterproof electrical boxes that require a "breathing" function to prevent condensation and block the intrusion of rainwater.

6. Automobile gearbox and drive axle: they are key components to ensure the pressure balance of the transmission system.

7. Construction machinery and agricultural equipment: It is widely used in gearboxes, hydraulic systems and other harsh working conditions that require simultaneous response to vibration, sealing and pressure balance.

Product advantages

1. Functional integration, simplifying design and installation

2. Excellent vibration resistance and structural strength

3. Reliable pressure balance and long-term sealing

4. Enhanced thin plate structure, convenient installation

FAQ

Q1: What is the main function of this product?

A1: It is a multi-functional integrated component that mainly fulfills two core functions:

1. Mechanical fastening: Through the tapered thread at the lower part, the thin plate is riveted to form a high-strength, high-torsion-resistant internal thread base.

2. Pressure balance, breathability and waterproofing: The upper vent plug structure balances the air pressure inside and outside the housing to prevent pressure accumulation or vacuum in the sealed cavity due to temperature changes, while effectively preventing external liquid and dust from entering.

Q2: What is its "breathing" principle? Can it be completely waterproof?

A2: Its "breathing" function is usually achieved through internal micro-maze channels, sintered metal filter elements or hydrophobic membranes. These structures allow gas molecules to pass slowly to achieve pressure equalization, but block liquid water molecules (because of their surface tension) and dust particles.

Q3: What key parameters need to be paid attention to during installation?

A3: The key to successful installation lies in three points:

1. Prefabricated aperture: It must be processed strictly in accordance with the product specifications. If the aperture is too large or too small, it will cause the riveting to be loose or the plate to burst.

2. Installation pressure: You need to use professional riveting equipment and set the appropriate pressure to ensure that the tapered thread is completely pressed in and formed in place.

3. Plate thickness and material: It is necessary to ensure that the plate thickness is within the recommended application range of the product, and the material (such as mild steel, aluminum, stainless steel) has sufficient ductility to complete the cold forming process.

Q4: Will the vent plug become clogged? How to clean or replace?

A4: In an environment with serious oil pollution and dust, the ventilation channel may be blocked after long-term use. Once clogged, the function of balancing air pressure will fail.

Cleaning: The surface of some models can be blown with a low-pressure air gun.

Replacement: Since the riveted part is permanently installed once and for all, if the vent plug fails to function, it is usually necessary to drill out the entire part and replace it with a new one. Maintainability should be considered when designing.

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