TWM604916U - Key structure of engineering control machine - Google Patents

Abstract

The model discloses a button structure for an industrial computer, which includes a panel, a pressing mechanism arranged on the panel, a circuit board arranged at the lower part of the panel, and an electronic button corresponding to the pressing mechanism on the circuit board; wherein, the The pressing mechanism includes an elastic film fixed on the panel, a support surface is provided on the upper end of the elastic film, and a through hole is provided in the middle of the support surface. The support surface and the lower inner wall of the elastic film form a cavity, and the cavity is A base is fixed, a return spring is arranged between the base and a supporting surface, a movable part is arranged on the supporting surface, an impact column is arranged at the bottom of the movable part, and a name plate is arranged on the movable part. The button of the new type can prevent the button from being stuck when pressed, and the button cannot bounce back, causing the problem of misoperation; the waterproof and dustproof can reach IP67 level. In addition, by providing a return spring between the base and the supporting surface, and resetting the return spring, the service life of the elastic film can be increased, thereby increasing the service life of the button.

Description

A key structure for industrial computer

The model relates to the field of keys, in particular to a key structure for industrial computers.

At present, the buttons of industrial computers all use ordinary mechanical buttons. Due to the gap between the buttons and the panel, the buttons are easy to get stuck in the panel and cannot rebound after being pressed, resulting in misoperation, defective products, and inconvenience to users In addition, due to the gap, in a harsh industrial environment, dust, water, oil, etc. are likely to enter the button from the gap, causing the internal circuit board to short-circuit and cause the industrial computer to malfunction.

The purpose of the present invention is to provide a key structure for an industrial computer in view of the shortcomings of the prior art, so as to solve the problems that the keys of the existing industrial computer are easy to jam and cause misoperation, as well as poor waterproof and dustproof and short service life.

The technical solution adopted by the present invention to achieve the above purpose is: a key structure for an industrial computer, which includes a panel, a pressing mechanism arranged on the panel, and a circuit arranged on the lower part of the panel The board is on the circuit board and is provided with an electronic button corresponding to the pressing mechanism; wherein the pressing mechanism includes an elastic film fixed on the panel, a support surface is provided on the upper end of the elastic film, and a through hole is provided in the middle of the support surface , The supporting surface and the inner wall of the lower part of the elastic film form a cavity, a base is fixed in the cavity, a return spring is arranged between the base and the supporting surface, a movable part is arranged on the supporting surface, and the bottom of the movable part There is an impact column and a nameplate on the movable part.

An LED light is arranged at the rear of the electronic button.

The movable part, the impact column and the base are transparent parts, and the movable part and the impact column are an integral structure.

The supporting surface has a wave shape in cross section.

The lower inner wall of the elastic film is provided with a base fixing slot, and the edge of the base is provided with a convex edge corresponding to the base fixing slot; the outer periphery of the elastic film is provided with an elastic film fixing slot through which the elastic film passes Fixed card slot, fixed on the panel.

A support frame is also provided on the inner wall of the elastic film, and the bottom of the support frame is connected with the base.

The beneficial effects of the new model are: the new button is provided with an elastic film, so that the movable part and the nameplate will not contact the inner side wall of the panel, which can prevent the button from being stuck when pressed, causing the button to fail to rebound and causing the problem of misoperation; , Waterproof and dustproof can reach IP67 level, which can effectively avoid the influence of dust and liquid in the industrial environment on the industrial computer, causing the industrial computer to work abnormally.

In addition, by setting a reset between the base and the supporting surface The spring is reset by the return spring during the pressing process, which can increase the service life of the elastic film, thereby increasing the service life of the button.

1: Panel

2: circuit board

3: Electronic button

4: Elastic film

5: Support surface

6: Base

7: Return spring

8: movable parts

9: Impact column

10: Nameplate

11: Guide column

12: Guide groove

13: Base fixing slot

14: convex edge

15: Elastic film fixing slot

16: Nameplate fixing column

17: Nameplate fixing column slot

18: card block

19: Through hole

20: Via

21: limit piece

22: LED lights

23: limit fence

24: Support frame

Figure 1 is a schematic diagram of the overall structure of the new type; Figure 2 is a schematic diagram of the exploded structure of Figure 1; Figure 3 is a cross-sectional view of Figure 1; Figure 4 is a schematic diagram of the structure of the new elastic film; Figure 5 is a schematic diagram of the bottom structure of Figure 4; Figure 6 is a schematic diagram of the bottom structure of Figure 4 Fig. 7 is a schematic diagram of the bottom structure of Fig. 6; Fig. 8 is a schematic diagram of the structure of the new base; Fig. 9 is an exploded view of Embodiment 2; Fig. 10 is a cross-sectional view of Embodiment 2.

Embodiment 1: Referring to Figures 1 to 8, this embodiment provides a key structure for an industrial computer, which includes a panel 1, a pressing mechanism provided on the panel 1, a circuit board 2 provided on the lower part of the panel 1, and a circuit board 2 On the top, corresponding to the pressing mechanism is provided with an electronic button 3; wherein, the pressing mechanism includes an elastic film 4 fixed on the panel 1, a support surface 5 is provided at the upper end of the elastic film 4, and a through Hole 19, the supporting surface 5 and the inner wall of the lower part of the elastic film 4 form a cavity, a base 6 is fixed in the cavity, and a return spring 7 is provided between the base 6 and the supporting surface 5, on the supporting surface 5 A movable part 8 is provided. The bottom of the movable part 8 is provided with an impact column 9, and a button name plate 10 is provided on the movable part 8.

A through hole 20 is provided at the bottom of the base corresponding to the through hole 19, a guide post 11 is provided on both sides of the through hole 20, and a guide groove is provided on both sides of the impact post 9 corresponding to the guide post 11 12.

The through hole 19 is fixedly sleeved on the upper end of the impact column 9 to form a sealing sleeve, thereby sealing the impact column 9 and the elastic film 4 to achieve IP67 waterproof and dustproof.

An LED lamp 22 is provided at the rear of the electronic button 3.

The movable part 8, the impact column 9 and the base 6 are transparent parts, and the movable part 8 and the impact column 9 are integrally formed.

The LED lamp 22 irradiates the button nameplate 10 through the impact column 9, the movable part 8 and the base 6, and is pasted on the upper surface of the button nameplate 10, and laser engraves or prints functional characters.

The supporting surface 5 has a wave shape in cross section.

The supporting surface 5 is lower than the upper end of the elastic film 4, and the supporting surface 5 and the upper end edge of the elastic film 4 form a movable part containing groove.

The wave crest of the wave-shaped supporting surface 5 fits the bottom of the movable part 8, which can effectively waterproof and dust-proof, and the wave-shaped supporting surface 5 has good ductility, and can improve the stroke of the supporting surface 5 during the pressing process , And can prevent the support surface 5 from being excessively stretched, resulting in a reduction in the service life of the support surface 5.

The lower inner wall of the elastic film 4 is provided with a base fixing slot 13, and the edge of the base 6 corresponds to the base fixing slot 13 13 is provided with a protruding edge 14; an elastic film fixing groove 15 is provided on the outer periphery of the elastic film 4, and the elastic film 4 is fixed on the panel 1 through the elastic film fixing groove 15.

A nameplate fixing column 16 is provided in the middle of the bottom of the button nameplate 10, and a nameplate fixing column slot 17 is provided on the movable member 8 corresponding to the nameplate fixing column 16 and the nameplate fixing column slot 17 extends to the impact column 9 internal. The four corner edges of the bottom of the key name plate 10 are provided with clamping blocks 18 which are buckled with the periphery of the upper surface of the movable part to hook the key name plate 10 to fix the key name plate 10.

On the upper edge of the base 6, a limit enclosure 23 is provided. The limit element enclosure 23 serves as a limit element for the downward stroke of the elastic film 4 to prevent the elastic film 4 from deforming and denting due to excessive travel.

A return spring limiter 21 is provided on the lower end of the impact column 9. The return spring limiting member 21 cooperates with the bottom of the movable member 8. When the movable member 8 is pressed down, under the action of the return spring 7, it plays a role of limiting.

Embodiment 2: With reference to Figures 9 to 10, this embodiment provides a key structure for an industrial computer. The structure is basically the same as that of Embodiment 1, except that a support frame 24 is provided on the inner wall of the elastic film 4 , The bottom of the support frame 24 is connected with the base 6, and the outer wall of the support frame 24 is close to the inner wall of the elastic film 4.

The bottom of the support frame 24 is located on the convex edge 14 of the base 6.

By providing the support frame 24, the elastic film 4 with a soft material can be used to prevent the elastic film 4 from being pressed due to the soft material. It collapses when pressed.

The above are only the preferred and feasible embodiments of the present model, and are not intended to limit the scope of the patent of the present model. Therefore, all equivalent structural changes made by using the content of the present model description are included in the scope of protection of the present model.

1: Panel

2: circuit board

3: Electronic button

4: Elastic film

10: Button nameplate

Claims (6)

A key structure for an industrial computer, characterized in that it comprises a panel, a pressing mechanism arranged on the panel, a circuit board arranged at the lower part of the panel, and an electronic button corresponding to the pressing mechanism on the circuit board; wherein, the The pressing mechanism includes an elastic film fixed on the panel, a support surface is provided at the upper end of the elastic film, and a through hole is provided in the middle of the support surface. The support surface and the inner wall of the lower part of the elastic film form a cavity, and a cavity is formed in the cavity. A base is fixed, a return spring is arranged between the base and a supporting surface, a movable part is arranged on the supporting surface, an impact column is arranged at the bottom of the movable part, and a name plate is arranged on the movable part. The button structure for an industrial computer according to claim 1, wherein an LED light is provided at the rear of the electronic button. The button structure for an industrial computer according to claim 1, characterized in that the movable part, the impact column and the base are transparent parts, and the movable part and the impact column are an integral structure. The key structure for an industrial computer according to claim 1, wherein the supporting surface has a wavy cross section. The button structure for an industrial computer according to claim 1, wherein the inner wall of the lower part of the elastic film is provided with a base fixing slot, and the edge of the base is provided with a convex edge corresponding to the base fixing slot; outside the elastic film An elastic film fixing slot is provided on the periphery, and the elastic film passes through the elastic The film fixing slot is fixed on the panel. The button structure for an industrial computer according to claim 1, wherein a support frame is further provided on the inner wall of the elastic film, and the bottom of the support frame is connected with the base.

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