Button structure and its balance bar

Abstract

The invention relates to a press key structure and a balance rod thereof. The press key structure comprises a bottom plate, a keycap, a lifting mechanism and the balance rod. The lifting mechanism is connected between the keycap and the bottom plate so that the keycap can move up and down relative to the bottom plate. The balance rod is generally a U-shaped outline, and the middle portion of the balance rod is arranged on the bottom plate in a rotating mode. The tail ends of both sides of the balance rod are L-shaped wheel portions and inserted in groove structures in a rotary mode, wherein the groove structures are oppositely arranged in the keycap and the lifting mechanism or simultaneously arranged in the keycap and the lifting mechanism. Compared an existing balance rod which utilizes an n-shaped connecting keycap and the bottom plate, the press key structure provides various connections of the balance rod, and is beneficial to structural miniaturization. In addition, a support of the lifting mechanism comprises a projection portion which can be blocked by a limit structure which is arranged on the bottom plate to limit a rotating angle of the support.

Description

technical field [0001] The invention relates to a key structure, in particular to a key structure with a balance bar and a balance bar used in the key structure. Background technique [0002] The main structure of the current mechanical key structure is to connect the lifting mechanism between the key cap and the bottom plate, so that the key cap can move up and down relative to the bottom plate. The actuation stability of the keycap, including the actuation stroke and smoothness, usually depends on the lifting mechanism. When the movement stability of the lifting mechanism itself is not good, it is also difficult for the keycap to move smoothly. In addition, when the length of the keycap is long, such as a blank key, a single independent lifting mechanism cannot effectively provide the balanced elastic force of the keycap, so that the keycap is often skewed when pressed, so in practical applications, the length is longer Most of the keycaps are equipped with multiple lift...

AI Technical Summary

Problems solved by technology

Due to this structural feature, the middle part of the keycap is provided with a lifting mechanism and other components, such as elastic round protrusions (for providing resilience and triggering the switch), and the middle part of the balance bar cannot be set through, so the middle part of the balance bar can only It is installed on the side of the keycap, so that the structural restraint of the single balance bar on the keycap is only one side, and it is difficult to effectively restrain the movement of the entire keycap

In addition, the conventional balance bar is made of flexible materials, and after multiple bendings, it is difficult to accurately control the dimensional tolerances

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