Features and device of ball and roller latches
A reliable lock is needed by no means to all doors. This is especially true for interior doors. They are enough so that they do not open from gusts of wind. To do this, mount the doorless latch-latches, the simplest type of which is a ball (roller) latch.
Purpose and types of fixers
By appointment, the devices are divided into products:
- retaining doors open;
- locking doors in the closed position;
- Limiting the opening angle of the door.
Also distinguish stationary and mobile types.Stationary models are attached to the door leaf, and mobile ones are used if necessary. By location, latches are floor, wall, door.
By design features distinguish:
- falevy (mechanical);
- ball (roller);
- sliding (bolts, heck);
- magnetic (divided into built-in, passive and electromagnetic).
This article discusses in detail the ball (roller) clamps. This latch latch refers to the stationary type of devices that lock the door in the closed position.
What are they made of?
The design of the ball latch is extremely simple:
- a hollow cylindrical body with a spring, on top of which is a ball;
- reciprocal plate with a recess on the diameter of the ball.
The body is mounted in the front side of the door, and the response is opposite it in the door frame. When the door is closed, the ball is immersed in the cylinder, then under the influence of a spring it rises to its original position and takes a recess in the bar. To open the door, a simple push or pulling movement of the handle is enough. The door handle is not connected to the latch, so their mutual arrangement can be any.
The door lock can be used in combination with another high-grade locking mechanism, as it in no way interferes with it. Both structural elements of the ball retainer are provided with holes for fasteners.
Screws for fasteners are included in the product package.
Field of use
The ball-type door latch-clamp is a universal locking device suitable for door structures made of various materials - wood, glass, plastic, metal-plastic and any type, even pendulum and sliding. For the glass door choose the model of the overhead latches. There are no restrictions on the purpose of the doors, because it is possible a double combination of such clamps with lock devices.
Such latches are used in furniture door designs.
Advantages and disadvantages
The advantages of this type of door latches include ease of use, simplicity of design and installation, resistance to wear and deformation, reliability, long service life and low cost.
And to the minuses - only a loud click sound when the door opens and closes.
How to choose?
It is not easy to come up with a simpler and more reliable design, the spring can be considered the only weak link, the quality of the material of which determines the durability of the device. Experts recommend choosing products from such well-known manufacturers:
- Russian firm Apecs;
- Finnish company Abloy;
- METTEM, another Russian manufacturer of door locks;
- Turkish firm Kale.
When purchasing clamps, it is desirable to respect color harmony with other door fittings. This is usually not a problem - the market provides a huge selection of different colors for these products. Also, before buying, compare the dimensions of the latch and the dimensions of your door.
Now for any model attach installation instructions, so install it yourself with the help of tools will be a simple matter.
Installation on a wooden door
First, at a comfortable height for you, attach the door handle. It can be any one - from simple metal bracket to figured wooden. Next, drill or screwdriver drill in the end of the door leaf landing nest under the cylindrical part of the mechanism. Its depth should be slightly greater than the length of the cylinder.
Insert the retainer into the recess, align it with the edges of the door, then draw a path. On these lines chisel make a landing recess for the outer rail.Now we will install the cylindrical part of the device and fix it on the end of the door with screws or wood screws. Installing the striker on the door frame is carried out similarly. As you can see, everything is very simple.
Neither specific tools nor great physical strength are needed.
Installation on plastic balcony doors
The installation process of the roller latch begins with the installation of the ball on the door leaf. By the way, note that the clips on the plastic doors are divided into 9-mm and 13-mm. The size depends on the profile installed. When purchasing the latch inform the seller about the manufacturer of your plastic doors, then he will select the right model for you.
Before installing the lock, unscrew the screw that is closest to the main handle. The plastic door can bend a little, so when you install the latch at the top or bottom of the door there is a chance that when you close it, you will have to make extra efforts so that it clicks.
Attach the roller to the place of the screwed out screw. The screw for the roller must be chosen a little longer than its predecessor, since the roller protrudes above the door leaf.For mounting the counterpart on the frame, an accurate marking of the ball location is required. To do this, attach a horizontal ruler to the middle of the roller and mark it with a pencil on the outside of the door leaf. Then close the door and transfer the mark to the frame.
The mark on the front side of the frame must coincide with the center of the inlet of the retainer. Attach the counterpart to the mark and attach it first with one upper screw (take the screw of a small length, 19 mm). Then follows the testing of the accuracy of the entry of the roller into the slot - 5-6 times open and close the door. If all is well, screw in the bottom screw.
How to install the latch on the plastic door with your own hands, see the video below.