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Jan 18, 2022
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Latch on the door with a rotary handle made of waste materials and motorcycle parts

To close the door from the inside, valves of various designs are used. Most of them are not original. If you have some free time, you can make an unusual, but at the same time simple, fail-safe latch that will last longer than the door itself.

Latch on the door with a rotary handle made of waste materials and motorcycle parts

Materials:

  • Profile pipe 50×25 mm;
  • steel strip 20×8 mm;
  • sheet steel 2 mm;
  • roller chain;
  • star;
  • bar 6 mm;
  • pipe 25 mm.

Valve manufacturing process

For the manufacture of the valve body, a piece of a profile pipe 100 mm long is required.

Latch on the door with a rotary handle made of waste materials and motorcycle parts

For the valve itself, a piece of strip 150 mm long is prepared.

Latch on the door with a rotary handle made of waste materials and motorcycle parts

2 plugs for the body are cut out of sheet steel. They need to mark and cut out the windows under the valve.

Latch on the door with a rotary handle made of waste materials and motorcycle parts
Latch on the door with a rotary handle made of waste materials and motorcycle parts

The latch is applied to the body, and moves relative to it to the closed position, as it will be on the door. A mark is placed on it, along which 3 links of the roller chain are welded.

Latch on the door with a rotary handle made of waste materials and motorcycle parts
Latch on the door with a rotary handle made of waste materials and motorcycle parts

A groove for an asterisk is cut out on the side of the case. Then a valve with a chain is placed in it, and the plugs are welded.

Latch on the door with a rotary handle made of waste materials and motorcycle parts
Latch on the door with a rotary handle made of waste materials and motorcycle parts

Next, using a bolt, you need to assemble 2 eyes with an asterisk. The connection is made by welding. In order for the sprocket to rotate freely, a gap should be created using cardboard before welding.

Latch on the door with a rotary handle made of waste materials and motorcycle parts

The asterisk is applied to the body so as to dock with the chain hidden inside. After that, the eyes are welded.

Latch on the door with a rotary handle made of waste materials and motorcycle parts
Latch on the door with a rotary handle made of waste materials and motorcycle parts

Next, you need to do the original five-beam handle. Its base is made from a piece of pipe. You need to measure its circumference, and divide by 5. The resulting value will be the step for placing the rays. The tube is drilled according to the marks made according to the calculated pitch. Then 5 rays are cut out of the bar, and one of their edges is sharpened to a cone.

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Latch on the door with a rotary handle made of waste materials and motorcycle parts

The beams are placed in a tube and welded in the center. Then the handle is welded onto the sprocket.

Latch on the door with a rotary handle made of waste materials and motorcycle parts
Latch on the door with a rotary handle made of waste materials and motorcycle parts

A bracket is bent from the strip, which will include the valve. It must be welded onto an even section of the strip. Also, 2 more ambassadors are welded onto the body of the valve to light it to the door.

Latch on the door with a rotary handle made of waste materials and motorcycle parts
Latch on the door with a rotary handle made of waste materials and motorcycle parts
Latch on the door with a rotary handle made of waste materials and motorcycle parts

Now it remains only to drill the mounting holes, and put the valve on the door. This is a very simple and reliable system. It will never close on its own, so it can be used in a house, an apartment, a garage, etc.

Latch on the door with a rotary handle made of waste materials and motorcycle parts
Latch on the door with a rotary handle made of waste materials and motorcycle parts

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