Push-button switch and switch device
A switching device and switching operation technology, applied in the direction of electrical switches, emergency protection devices, layers, etc., can solve the problems of short circuit of the switch part, intrusion into the motor, peeling of the printed layer or coating, etc., to achieve the effect of thinning and preventing peeling
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Embodiment 1
[0049] figure 1 It is a schematic plan view showing the push button switch structure of Embodiment 1 of the present invention, figure 2 is along figure 1 Schematic cross-sectional view of line II-II.
[0050] see figure 1 , 2 , The push button switch of this embodiment mainly has a resin molded part 1, a film 2 and a rubber backing plate 3. The resin molded portion 1 is a key (button) body, and is formed by resin injection molding. On the surface of the resin molded part 1, a thin film 2 having permeability (transparency) through the base is formed.
[0051] The film 2 is made of a moldable material such as resin, for example, a polymer compound such as PET (polyethylene terephthalate), PC (polyester), urethane, or a composite thereof. The film 2 has a flange portion 2a extending from the side surface of the resin molded portion 1 toward the outer peripheral side. The flange portion 2a is formed due to restrictions on the processing of the film 2 . The resin molded...
Embodiment 2
[0059] In Embodiment 1, the flange portion 2a is figure 2 The P1 part of the rubber pad 3 is pasted. Therefore, when the key is pressed and the switch is operated, the flange portion 2 a prevents the pressing deformation of the rubber pad 3 at the bonding portion. As a result, the operating load increases and the rate of rattling sounds decreases, making it difficult to obtain a good operational feeling.
[0060] The purpose of this embodiment is to obtain a better operating feeling than that of Embodiment 1.
[0061] image 3 It is a schematic plan view showing the push button switch structure of Embodiment 2 of the present invention, Figure 4 is along image 3 Schematic cross-sectional view of line IV-IV.
[0062] see image 3 , 4 , Compared with the structure of Embodiment 1, the difference of the button switch of this embodiment is that a concave portion 3d is provided on the rubber pad 3 . This recess 3 d creates a gap between the rubber pad 3 and the flange por...
Embodiment 3
[0066] In Example 2, such as image 3 As shown, the membrane 2 has a structure with slits 2c added thereto. Therefore, the flange portion 2a of the film 2 is as Figure 4 , 5 As shown, it extends to the region directly above the substrate supports 3 a , 3 b of the rubber pad 3 .
[0067] Figure 5 Thick portions such as the substrate support portions 3a, 3b and the operation portion 3c of the rubber backing plate 3 are indicated by hatching, and the film 2 is indicated by dotted lines.
[0068] Therefore, in Example 2, in Figure 4 Among them, when the distance L between the rubber backing plate 3 and the flange portion 2a is smaller than the action stroke S of the metal sheet 4, when the button is pressed down, as in Image 6 As shown in part P2 of , the flange portion 2a interferes with the upper ends of the substrate support portions 3a, 3b. As a result, the operating load increases and the rate of click noise decreases, making it difficult to obtain a better operating...
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