CN2140098Y - Waterproof key switch - Google Patents

Abstract

A waterproof key switch comprises a key, a protection pad, a key switch and a circuit board. The key is internally provided with a loop bar with a cross-shaped notch, a cross-shaped telescopic rod at the upper end of the key switch is inserted into the cross-shaped notch of the loop bar, an elastic protection pad is composed of a curved surface part, an inclined plane part and a bottom part, and the protection pad is coated on the outer side of the loop bar of the key and the whole key switch to achieve the effects of complete water and dust prevention.

Description

The utility model relates to a computer key, in particular to a waterproof key switch.

At present, the internal structure of the key switch used by the computer can be roughly divided into four types: mechanical type, capacitive type, film type and conductive rubber type. These four key switches have their own advantages and disadvantages, but they have a common defect that they cannot be 100% waterproof. Although there are waterproof keyboards on the market, there are still two major deficiencies: one is that it can only achieve short-term and partial waterproofing; the other is that the keyboard is covered with thick rubber, which not only affects the appearance but also causes inconvenience in operation.

The purpose of the utility model is to provide a waterproof key switch, which can ensure that the key is waterproof and dustproof for a long time.

The purpose of this utility model is achieved in this way: a sleeve rod with a cross groove is arranged in the button, the cross-shaped telescopic rod at the upper end of the key switch is inserted into the cross groove of the sleeve rod, and an elastic protective pad is formed by a curved surface. The surface part, the inclined part and the bottom are composed of the round hole on the curved part of the pad, which is tightly set on the outside of the sleeve rod, and the inclined part covers the base part of the key switch. There is a flange on the upper and lower edges of the bottom, and the two flanges Engage with the grooves of the upper cover and the lower cover respectively, so that the key switch is completely waterproof and dustproof.

The utility model has a simple structure, and uses a protective pad to cover the outer side of the sleeve rod of the button and the whole button switch, and has a good waterproof and dustproof effect.

Concrete structure of the present utility model is illustrated by following accompanying drawing.

Fig. 1 is a perspective view of a computer keyboard.

Fig. 2 is an exploded view of the utility model.

Fig. 3 is a sectional view of the utility model when it is not pressed.

Fig. 4 is a sectional view of the state when the utility model is pressed.

Fig. 5 is a schematic diagram of the movement of inserting the protective pad of the present invention through the mould.

As shown in Figure 2 and Figure 3, the lower end of the button 1 is provided with a sleeve rod 11, and the sleeve rod 11 is provided with a cross slot for inserting the cross-shaped telescopic rod 21 of the button switch 2, and the button switch 2 is directly fixed on the On the circuit board 3, in order to make the key firmly, the key switch 2 is provided with a card slot 22, which can be embedded in the fixed iron plate 4, and the fixed iron plate 4 can be installed according to actual needs. The pad 5 is composed of a curved surface 51, a rod slope 52 and a bottom 53, wherein the upper end of the curved surface 51 is provided with a garden hole 50 according to the outer diameter of the sleeve rod 11, so that the sleeve rod 11 is inserted into the curved surface 51 of the pad 5. It can be closely connected, and water or dust cannot penetrate therefrom, and the inclined portion 52 of the upper protective pad 5 covers the base of the key switch 2 . After the sleeve rod 11 of the button 1 cooperates with the cross-shaped telescopic rod 21 of the button switch 2, it is just located on the curved surface 51 of the pad 5. When the button 1 is pressed, the curved surface 51 will shrink inward, as shown in Figure 4, without hindering the The pressing action has the effect of increasing the elasticity of pressing the key. The upper and lower edges of the bottom 53 of the protective pad 5 are respectively provided with a flange 531, 532, and the two flanges 531, 532 are respectively engaged with the groove 61 of the upper cover 6 and the groove 71 of the lower cover 7, so as to firmly fix the protective pad. Pad 5 prevents penetration of water or dust. The protective pad 5 is made of soft waterproof and elastic material. The protective pad 5 must be tightly covered on the sleeve rod 11 of the button 1. Since there is no support and the curved surface 51 of the protective pad 5 is extremely soft, it is not easy to insert , so design a kind of garden tubular mold 9 made of metal or hard material, as shown in Figure 5, its height is approximately equal to the height of the protective pad 5, and the top of the garden tubular mold 9 just withstands the curved surface of the protective pad 5 The garden hole 50 on the upper end of the part 51, the sleeve rod 11 of the button 1 is pressed into the garden tubular mold 9, then the sleeve rod 11 can easily penetrate into the garden hole 50 on the curved surface 51 upper end, and the completed sleeve rod will be inserted 11 Pull it out and put it on the cross-shaped telescopic rod 21 of the key switch 2 to get final product.

No matter the structure of the present utility model is mechanical, capacitive, film or conductive rubber key switch, as long as the protective pad 5 of the present utility model can cooperate with the size of the cover bar of the key 1 and the shape of the key switch 2, it can be applied.

Claims (1)

1. A waterproof key switch, which is composed of a key, a protective pad, a key switch and a circuit board; the key is provided with a sleeve rod with a cross groove, and the cross-shaped telescopic rod at the upper end of the key switch is plugged into the sleeve rod. In the cross groove, the elastic pad is composed of a curved surface, a sloped portion and a bottom; the characteristic is that: the round hole of the curved surface of the pad is tightly set on the outside of the sleeve rod, and the sloped portion covers the base of the key switch part, the upper and lower edges of the bottom are respectively provided with a flange, and the two flanges are engaged with the grooves of the upper cover and the lower cover respectively.

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