Bearing structure of rotary-operated electronic components
A technology of electronic components and rotary operation, which is applied in the direction of electrical components, circuits, electric switches, etc., and can solve problems such as axial looseness that cannot be suppressed
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no. 1 example ］
[0034] figure 1 An exploded perspective view showing an embodiment of a rotary switch to which the bearing structure of the present invention is applied, figure 2 Indicates its axial section view.
[0035] The rotary switch includes: a cylindrical rotary operation shaft 10 , a bearing 20 passing through the rotary operation shaft 10 , a rotor 7 installed and fixed on the rotary operation shaft 10 for rotation, and a holder 6 .
[0036] The rotation operation shaft 10 is formed of resin or metal, and coaxially includes: a cylindrical operation part 11 having an outer peripheral surface forming a surface parallel to the axial direction; a cylindrical holding part 12 extending from the operation part 11 One end of which is reduced in diameter and extended in the axial direction; the cylindrical driving part 13 is further reduced in diameter from one end of the holding part 12 and extended in the axial direction. The end surface of the operation part 11 on the side of the holdi...
no. 2 example ］
[0045] figure 1 , 2 , 3 represents the first embodiment in which the bearing structure of the present invention is applied to a rotary switch, Figure 4 shows an exploded perspective view of an embodiment suitable for a variable resistor, Figure 5 Indicates its axial section. The variable resistor comprises: a rotating operation shaft 10, a bearing 20, a rotor 7', a holder 6', an elastic ring 3, a fixed ring 4, a fixed pin 8, and figure 1 , 2 , 3, the difference is only in the rotor 7' and the holder 6'. Therefore, the following description will focus on the different parts, and the description of the common parts will be omitted as much as possible.
[0046] rotor 7' with figure 1 The rotor 7 similarly includes a rotating shaft 7A and a disk portion 7B, but instead of figure 1 The sliding contact piece 7C, the sliding contact piece 7'C is mounted on the plate surface of the disc portion 7B. The sliding contact piece 7'C is formed by pressing an elastic metal plate, a...
Deformed example 1
[0052] In the second embodiment, as Figure 6A As shown, a resistor body 6R and a common conductor ring 6C are provided on the bottom surface 6B of the housing recess 6A of the holder 6', and a sliding contact piece 7 with contact pieces 7'C1 and 7'C2 is provided on the disk portion 7B of the rotor 7'. 'C. As a variant, conversely as Figure 7 As shown, an arc-shaped resistor body 7R is set on the plate surface of the disc portion 7B of the rotor 7', and a common conductor ring 7Cc is set inside the resistor body 7R, which is used as a holder figure 2 The holder 6 makes the resistor body 7R and the common conductor ring 7Cc in sliding contact with the elastic contact pieces 6C1 and 6C3, respectively. However, the elastic contact 6C2 and the terminal 6T2 are not provided. In this case, in the rotor 7', one end of the resistor body 7R is connected to the common conductor ring 7Cc.
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