CN209675176U - A kind of false-touch prevention membrane keyboard - Google Patents

Abstract

The utility model discloses a kind of false-touch prevention membrane keyboards, are related to computer input device field.The utility model by upper layer panel (contain keycap), plastics lining board, rubber membrane, upper circuit layer, insulation film, lower circuit layer and lead-out wire and back lining board group at, one fulcrum is wherein set between the volcanic crater of adjacent keycap on plastics lining board and connects a bascule, lever both ends are in below two neighboring keycap, there are gap so that lever arm passes through on the side at volcanic crater.Lever end when a keycap is pressed below is depressed, and the lever end below corresponding adjacent keycap can rise, and prevents adjacent keycap from being pressed, achievees the purpose that prevent accidentally to touch.Under the premise of the utility model is the advantages of maintaining cheap membrane keyboard itself and water proof and dust proof, the function of accidentally touching surrounding key mapping is prevented when can be realized key；In addition, the utility model increases the rebound feedback of key to a certain extent, good sense of touch can be brought to user.

Description

A kind of false-touch prevention membrane keyboard

Technical field

The utility model relates to computer input device fields, and in particular to one kind can be prevented when user inputs The accidentally membrane keyboard of touching.

Background technique

Keyboard is one of most important input equipment of computer, and people are defeated by letter, number, punctuation mark etc. by keyboard Enter into computer, to issue order, input data etc. to computer.Computer especially PC has penetrated into The every aspects such as people's routine office work, study, amusement, the overwhelming majority all be unable to do without keyboard using the scene of computer.Current Keyboard is broadly divided into three classes: membrane keyboard, mechanical keyboard and direct capacitance keyboard.Wherein mechanical keyboard is due to very strong sense of touch Feedback, the increasingly welcome by programmer, paperwork person and the competing industry pursuer of electricity etc. to the demanding crowd of keyboard；It is quiet Capacitor keyboard is usually used in large medical equipment and high end games peripheral hardware since the rapid and comfort level that is quick on the draw is high；But both It is exactly to involve great expense that keyboard, which has a common drawback, on the contrary, membrane keyboard is due to low cost, moisture-proof dust-proof and light excellent Point, in occupation of absolute dominant position in art of keypads.The trigger switch of membrane keyboard is made of three-layer thin-film, upper layer and lower layer Film be the conductive layer with circuit, middle layer is insulating layer, and has an aperture under each key, when pressing keys most The film on upper layer is extruded, and through aperture and lowest level film contacts, thus is formed access, is sent the signal for pressing key pressing.One As in the case of, use rubber cap of the feel of membrane keyboard on rubber membrane rebound feed back.Since rubber screen resilience is small, Only need very little dynamics will trigger signal, and tactile feedback very little will cause be easy to accidentally touch around corresponding key in this way Other keys, cause no small puzzlement to user, this is also that keyboard severe abandons membrane keyboard using crowd and is keen to machinery One of the main reason for keyboard.

Summary of the invention

To solve the above problems, the utility model provides a kind of false-touch prevention membrane keyboard.The utility model is by simple machine Tool structure introduces membrane keyboard, under the premise of maintaining cheap membrane keyboard itself and water proof and dust proof advantage, Neng Goushi The function of accidentally touching surrounding key mapping is prevented when existing key；In addition, the increased mechanical structure of the utility model is reinforced to a certain extent The rebound feedback of key, can bring the good sense of touch of similar mechanical keyboard to user.

To reach said effect, the utility model is achieved by the following technical programs:

Under normal circumstances, the structure of membrane keyboard from top to bottom by upper layer panel (contain keycap), plastics lining board, rubber membrane, Upper circuit layer, insulation film, lower circuit layer and lead-out wire and back lining board group at.Wherein on plastics lining board under each keycap Fang Youyi opening, referred to as volcanic crater can make keycap be communicated to rubber film layer through plastics lining board, while the height on its side determines Stroke under keycap on time.A fulcrum is arranged in the utility model on plastics lining board between the volcanic crater of adjacent keycap, use In connecting a bascule structure, lever both ends are in the lower section of two neighboring keycap.The both ends of bascule in 90 degree to Upper bending forms a U-shaped structure, is spherical shape at endpoint, can directly contact with keycap lower part.On the side at volcanic crater there are Gap is so that lever arm passes through.Spring is fixed on rubber cap to enhance the rebound of keycap.When there is no keycap to be pressed, own The spring that keycap is disposed below bounces；If target key mapping needs are used, keycap is pressed, while below its keycap Lever end be depressed, it is corresponding around lever end below adjacent keycap can rise, prevent adjacent keycap from being pressed, reach To the purpose for preventing accidentally touching.

Particularly, it is contemplated that the use demand of most users (some key mappings almost do not have to or be usually used in Macintosh) And simplify the purpose of manufacture craft, for the keyboard of standard layout, above-mentioned lever construction exists only in following keypad: Master Keyboard All letter keys, number key and the punctuation mark key in area, edit all keys of keypad and all keys of numeric keypad.

Preferentially, lever arm is made of high-strength alloy steel, and edge changes into fillet to reduce abrasion.

The utility model has the beneficial effects that can prevent user from missing the key around striking mark key mapping when rapidly inputting Position；Simultaneously under the premise of retaining cheap, the moisture-proof dust-proof and light advantage that membrane keyboard just has originally, by simple Mechanical structure enhance key it is lower by with rebound feel, bring good input experience to user.

Detailed description of the invention

Fig. 1 is the general structure schematic diagram of the utility model.

Fig. 2 is the structural schematic diagram of plastics lining board in Fig. 1.

Fig. 3 is lever and fulcrum structure figure.

Fig. 4 is schematic view of the mounting position of the lever construction in plastics lining board.

Fig. 5 is A-A cross-sectional view of Fig. 4.

Fig. 6 is false-touch prevention schematic illustration.

In figure, the upper layer 1- panel, 2- plastics lining board, 3- rubber membrane, the upper circuit layer of 4-, 5- insulation film, circuit layer under 6-, 7- bottom liner plate, 8- keycap, 9- keyboard face, 10- rubber cap, 11- spring, the upper layer 12- circuit, 13- hole, 14- lower circuit, 15- lead-out wire, the volcanic crater 16-, 17- lever, 18- fulcrum, the volcanic crater 19- gap, 20- lever end ball, 21- lever side wall Cylindrical bump, the upper end inner male part in the volcanic crater 22- gap.

Specific embodiment

The specific embodiment of the utility model various aspects is described in further detail with reference to the accompanying drawing.

A kind of false-touch prevention membrane keyboard as shown in Figure 1, structure include upper layer panel (1), plastics lining board from top to bottom (2), rubber membrane (3), upper circuit layer (4), insulation film (5), lower circuit layer (6) and bottom liner plate (7).Wherein, upper layer panel (1) include keycap (8) and keyboard face (9)；Corresponding at the position of upper layer panel (1) each keycap on rubber membrane (3) has rubber Cap (10), rubber cap (10) secure light spring (11) above；Upper layer circuit (12) are printed on upper circuit layer (4)；It insulate thin Corresponding to hole (13) at the position of upper layer panel (1) each keycap on film (5)；Lower circuit is printed on lower circuit layer (6) (14), and lead-out wire (15) are connected to；Bottom liner plate (7) and upper layer panel (1), which are closed intermediate each layer, to be constituted completely Keyboard.For plastics lining board (2), correspond to the position volcanic crater Chu You (16) of upper layer panel (1) each keycap.It misses in order to prevent It touches, there are a bascule (17) and fulcrums (18) between adjacent volcanic crater.There are gap (19) to make thick stick on the side of volcanic crater Lever arm can pass through, while the also guide rail as lever arm when up and down.

Plastics lining board (2) as shown in Figure 2 corresponds to the position volcanic crater Chu You (16) of upper layer panel (1) each keycap. There are a bascule (17) and fulcrums (18) between the keypad for preventing accidentally touching, adjacent volcanic crater.Volcanic crater (16) side On there are gap (19) to pass through lever arm, while the also guide rail as lever arm when up and down.Pay attention to preventing non- Accidentally touching area does not have bascule (17), fulcrum (18) and volcanic crater gap (19) these three structures.In order to facilitate displaying, in figure A pair of of lever and fulcrum structure are only depicted, similarly hereinafter.

Lever and fulcrum structure as shown in Figure 3, fulcrum (18) are actually one section of protrusion on plastic front board (2), Top is curved surface, facilitates the activity of lever (17)；Two end tops of lever (17) fix two balls (20), lever arm side wall There are four cylindrical bump (21), limit lever activity in the horizontal direction.

Installation of the lever (17) on plastics lining board is as shown in figure 4, the both ends of lever pass through volcanic crater gap (19) in fire Mountain pass (16) is internal, and four cylindrical bumps and in-between lever arm part and fulcrum are in volcanic crater (16) outside.

Fig. 5 is A-A cross-sectional view of Fig. 4, and as shown in the drawing, there are inwardly projecting for the upper end on volcanic crater gap (19) both sides A part (22), make lever (17) it is upward activity when without departing from volcanic crater (16)；And the longitudinal section of lever (17) is one A round rectangle, height are greater than the width of gap (19), and width is slightly less than the width of gap (19), guarantees that it will not be overturned.

The working principle of the utility model by taking two neighboring key as an example as shown in fig. 6, be illustrated, when a key mapping is pressed When lower, the downward compressed spring (11) of keycap (8) and rubber cap (10) trigger key switch by rubber cap (10)；Lever at this time (17) one end below this keycap (8) is in full state, and the lever end under corresponding surrounding keycap is in raised configuration, these Keycap is bounced by spring (11), and the ball (20) for the lever end that can be raised when they are accidentally touched and are pressed contradicts, therefore cannot It is pressed and triggers key response.In this way, just having achieved the purpose that prevent from accidentally touching in input.

An above-mentioned guiding embodiment for the utility model, but the design concept of the utility model is not limited to This, all non-essential modifications to the present invention made by this concept are belonged to the utility model institute protection scope Abuse.

Claims (7)

1. a kind of false-touch prevention membrane keyboard, structure include from top to bottom upper layer panel, plastics lining board, rubber membrane, upper circuit layer, Insulation film, lower circuit layer and bottom liner plate；Wherein, upper layer panel includes keycap and keyboard face；Correspond on plastics lining board upper The position volcanic crater Chu You of each keycap of deck panels；Corresponding at the position of each keycap on rubber membrane has rubber cap；Upper circuit Upper layer circuit has been printed on layer；Corresponding to hole at the position of each keycap on insulation film；Under having been printed on lower circuit layer Layer circuit, and it is connected to lead-out wire；Bottom liner plate and the intermediate each layer of upper layer panel handle are closed composition complete keyboard；It is special Sign is, accidentally touches in order to prevent, and a fulcrum is arranged between the adjacent volcanic crater of plastics lining board, for connecting a bascule Structure, lever both ends are inside volcanic crater, the lower section in two neighboring keycap.

2. a kind of false-touch prevention membrane keyboard as described in claim 1, which is characterized in that there are gaps on the volcanic crater side It is passed into lever arm inside volcanic crater, while the also guide rail as lever arm when up and down, and gap is upper Inwardly projecting a part is held, makes lever in upward activity without departing from gap.

3. a kind of false-touch prevention membrane keyboard as described in claim 1, which is characterized in that each rubber cap of the rubber membrane Spring is secured above.

4. a kind of false-touch prevention membrane keyboard as described in claim 1, which is characterized in that the both ends of the lever in 90 degree to Upper one section of bending, be in U-shape structure, is spherical shape at endpoint to reduce with the contact area of keycap to reduce the mill to keycap Damage, there are four cylindrical bumps to limit lever activity in the horizontal direction for lever arm side wall.

5. a kind of false-touch prevention membrane keyboard as described in claim 1, which is characterized in that the longitudinal section of the lever is square Shape, height is greater than the width in volcanic crater gap, and width is slightly less than the width in volcanic crater gap, and lever edges change into fillet To reduce abrasion.

6. a kind of false-touch prevention membrane keyboard as described in claim 1, which is characterized in that the balance pivot is plastics lining board On one section of protrusion, upper part is curved surface.

7. a kind of false-touch prevention membrane keyboard as described in claim 1, which is characterized in that the volcanic crater gap and lever knot Structure and its fulcrum are present in particular keypad, comprising: all letter keys, number key and the punctuation mark key in major key panel, editing key All keys in area and all keys of numeric keypad；Other keypads do not introduce false-touch prevention lever construction, and volcanic crater leaves no gaps.