Keyboard device

Abstract

The present invention provides a keyboard device, capable of fixing matrix part and plate part hard and reducing abnormity noise generated by key-press. The matrix part (21) is burned together with the plate part through supersonic welding, so as to fix each other hard compared to the condition of connecting through adhesive. Thus, it is able to restrain the matrix part (21) peeling off from the plate part (22) even though executants press key with high power or during a long time. Moreover, as to noses (31a to 31f) of the plate part (22), the occupied ratio of the noses relative to key-press part (2a) is more than that of the noses (31a, 31b) relative to a slightness part (2b), thus the welding connection of the key-press part (2a) is tighter. There is no clearance between the matrix part (21) and the plate part (22), so the key-press part (2a) can restrain the abnormity noise due to key-press.

Description

technical field [0001] The present invention relates to a keyboard device, and in particular, to a keyboard device capable of firmly fixing a base member and a plate member and reducing the generation of abnormal noise when keys are pressed. Background technique [0002] As disclosed in JP-A-49-35209, there is known a keyboard device including a plurality of keys integrally formed of a resin material. Since the integrally formed key is formed by a kind of resin material, there are problems such as the following: for example, when a hard material is used in order to improve the strength, the key portion of the key pressed by the player lacks hygroscopicity. If rough material is used due to its hygroscopicity, the strength of the key portion will be weak. [0003] Therefore, as disclosed in Japanese Patent Laying-Open No. 7-44156, such a key is also known in which a surface member (plate member) made of a sweat-absorbing material is bonded to the key (base member) by an adhes...

AI Technical Summary

Problems solved by technology

Since the integrally formed key is formed by a kind of resin material, there are problems such as the following: for example, when a hard material is used in order to improve the strength, the key portion of the key pressed by the player lacks hygroscopicity. Hygroscopicity and rough material, the strength of the button part is weak

[0006] However, as a key that uses an adhesive material to bond the two parts of the base member and the plate member, there is such a problem that when the player presses the key strongly, or when a long time passes after bonding, the bonding of the adhesive material Capacities will be reduced causing board parts to peel off

[0007] In addition, since the adhesive is applied between the surface of the base member and the surface of the plate member, there is a problem that when the adhesive is applied unevenly, part of it will be peeled off, resulting in a gap between the base member and the plate member. space between

If a space is formed between the base member and the plate member, abnormal noise will be generated when the player's fingertips touch the keys, giving the player an unpleasant feeling.

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