1. Snap-on locking mechanism
Snap-on is one of the common locking mechanisms of FPC Connector. This mechanism mainly relies on the snap-on structure to fix the FPC (flexible printed circuit board). The snap-on is usually an elastic structure extending from the plastic shell of the connector. When the FPC is inserted into the connector, the snap-on will be squeezed by the FPC and deformed elastically, allowing the FPC to smoothly enter the connection position inside the connector. Once the FPC is fully inserted, the snap-on will rely on its own elasticity to return to its original state and tightly clamp the edge or specific fixed part of the FPC. There may be some bumps or textures on the inner surface of the snap-on, which helps to increase the friction between the FPC and prevent the FPC from easily coming out when subjected to external force. This snap-on locking mechanism is simple, reliable, and easy to operate. It is widely used in many consumer electronic devices, such as mobile phones, tablets, etc., because the FPC in these devices may need to be plugged in and out to a certain extent for repair or replacement.
2. Press-on locking mechanism
The press-on locking mechanism is also common in FPC Connectors. The connector of this mechanism usually consists of two parts, upper and lower. When the FPC is to be connected to the connector, first place the FPC at the specified position of the lower half of the connector, and then lock it by closing the upper half. When the upper and lower halves are closed, a certain amount of pressure will be applied to the FPC, which will press the FPC tightly against the contact point of the connector. The size of this pressure is designed to ensure that there is a good electrical connection between the FPC and the contact point, but it should not be too large to damage the FPC. The advantage of the press-fit locking mechanism is that it can provide a relatively stable connection, which is particularly suitable for use in some environments with large vibrations or high requirements for connection stability, such as FPC connections in automotive electronic equipment or industrial control equipment.
3. Magnetic locking mechanism
Some FPC Connectors use a magnetic locking mechanism. In this mechanism, magnetic elements are installed on the connector and FPC or its accessories. When the FPC is close to the connector, due to the effect of magnetic force, the FPC will be attracted and accurately aligned with the contact point of the connector, and then the connection is achieved. The advantage of the magnetic locking mechanism is that it is easy and quick to operate, and the connection can be achieved without precise plugging and unplugging operations. At the same time, the force of magnetic attraction can also ensure that the FPC is fixed to a certain extent. However, this mechanism may need to consider the impact of magnetic fields on surrounding electronic components, and may be interfered with in some strong magnetic field environments.
4. Lock-slot combination locking mechanism
Some FPC Connectors use a lock-slot combination locking mechanism. Under this mechanism, a specific slot is provided on the connector, and the edge of the FPC or a specially designed connection part has a lock structure. When the FPC is inserted into the slot, the lock will cooperate with the structure inside the slot. For example, the lock may be stuck in a protrusion or depression in the slot, thereby locking the FPC. This combined locking mechanism can provide a more precise connection and has a better effect in preventing the FPC from being accidentally pulled out. It is usually used in electronic equipment with high requirements for connection reliability and safety.
