Rotating mechanism and keyboard device
A technology of rotating mechanism and rotating center, applied in the direction of rotating bearings, mechanical equipment, sliding contact bearings, etc., can solve the problem of damage to the rotating shaft, and achieve the effect of high mechanical strength
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no. 1 approach ＞
[0112] [Structure of keyboard device]
[0113] figure 1 It is a figure which shows the structure of the keyboard apparatus in 1st Embodiment. In this example, the keyboard device 1 is an electronic keyboard musical instrument, such as an electronic piano, that emits sound in response to keys pressed by a user (player). In addition, the keyboard device 1 may also be a keyboard-type controller that outputs control data (such as MIDI) for controlling an external sound source device according to keys. In this case, the keyboard device 1 may not have a sound source device.
[0114] The keyboard device 1 has a keyboard assembly 10 . The keyboard assembly 10 includes white keys 100w and black keys 100b. A plurality of white keys 100w and black keys 100b are arranged side by side. The number of keys 100 is N, which is 88 in this example. The direction of this arrangement is called the scale direction. When the description can be made without particularly distinguishing the whit...
no. 2 approach ＞
[0159] In the second embodiment, a rotating mechanism 900A having a structure different from that of the rotating mechanism 900 in the first embodiment will be described. Figure 14 It is a side view showing the shaft portion and the protruding portion of the rotation mechanism in one embodiment of the present invention. In the rotation mechanism 900A of the second embodiment, the shape of the protruding portion 530A is different from the shape of the protruding portion 530 of the first embodiment. Figure 14 The protrusion 530A shown is similar to Figure 4 with Figure 5 The protruding portion 530 in the structure, but the shape of the stopper abutting portion 531A is different from that of the stopper abutting portion 531. In the following description, the Figure 4 with Figure 5 Description of the same features as the protruding portion 530 in , and mainly explain points different from the protruding portion 530 .
[0160] Such as Figure 14 As shown, the stopper ab...
no. 3 approach ＞
[0168] In the third embodiment, a rotating mechanism 900C having a structure different from that of the rotating mechanism 900 in the first embodiment will be described. Figure 21 It is a partial enlarged view of the rotation mechanism in one embodiment of the present invention. In the rotation mechanism 900C of the third embodiment, the shape of the bearing portion 220C is different from that of the bearing portion 220 of the first embodiment (refer to Figure 4 as well as Figure 5 ). In the description below, omit the pair and Figure 4 with Figure 5 In the description of the same features as the bearing unit 220, the differences from the bearing unit 220 will be mainly described.
[0169] Such as Figure 21 As shown, protrusions 640C, 650C, and 660C are provided on the inner surface of opening 229C. The protrusions 640C, 650C, and 660C protrude toward the shaft 520C from the inner surface of the opening 229C, and come into contact with the shaft 520C. The protrusi...
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