CN208190623U

CN208190623U - A kind of capacitance type touch key Macintosh

Info

Publication number: CN208190623U
Application number: CN201721700643.2U
Authority: CN
Inventors: 谢燕; 张伟伟
Original assignee: Chipsea Technologies Shenzhen Co Ltd
Current assignee: Chipsea Technologies Shenzhen Co Ltd
Priority date: 2017-12-08
Filing date: 2017-12-08
Publication date: 2018-12-04
Anticipated expiration: 2027-12-08

Abstract

The utility model discloses a kind of capacitance type touch key Macintosh, which includes to touch chip and several singly-bounds, wherein touching chip is connected to several singly-bounds, and is provided with Macintosh between several described singly-bounds.The completely compatible traditional touch key-press of the utility model, and identical touch chip pin is made to pick out more touch key-press, touch key-press is maximized using number under the premise of not changing original resources of chip, to make the resource utilization of user increase, manufacturing cost can be reduced on the basis of function-stable.

Description

A kind of capacitance type touch key Macintosh

Technical field

The utility model belongs to the technical field of touch key-press, the in particular to capacitance type touch key of touch panel device.

Background technique

The development of capacitance type touch key is highly developed, and chip design level is higher and higher, internal algorithm increasingly at Ripe so that touch key-press is more and more stable, anti-interference ability is more and more stronger, and therefore, capacitance type touch key is answered on the market at present It is very wide with covering surface.

However, mature product, price war are fierce.The comparable fierceness that the price war of chip is beaten is touched, all Rack one's brains keep in mind how reduced cost again assurance function.

A kind of capacitance type touch key system, including a touch control are disclosed if patent application 201520859448.9 System, touch control system are equipped with a touch induction circuit, and touch induction circuit connects a SCM system, touch induction circuit It is also connected at least two electrodes；At least two electrodes include the first induction electrode, the second induction electrode, the first induction electrode and the There are gaps between two induction electrodes, and gap is between 1mm~5mm.The utility model passes through the first induction electrode, the second induction The signal of electrode carries out the detection of self-capacitance electric charge transfer by SCM system and mutual capacitance electric charge transfer detects two kinds of detection shapes The detection of state, when effectively reducing single detection pattern, since interference causes the case where accidentally touching.However, the touch of the patent application Sensor circuit is made of two the first induction electrode, the second induction electrode electrodes, for the then structure letter of single touch key-press It is single, but actually touch key-press is often multiple competence exertion effects that are set together, so the touch key-press thus constituted Structure just seem that complicated, manufacturing cost is still very high, is unable to satisfy the demand of user.

Summary of the invention

Based on this, therefore the primary mesh of the utility model be to provide a kind of capacitance type touch key Macintosh, the combination The completely compatible traditional touch key-press of key, and make identical touch chip pin touch key IO pick out it is more touch by Key, touch key-press is maximized using number under the premise of not changing original resources of chip, to make the resource utilization of user Increase, manufacturing cost can be reduced on the basis of function-stable.

Another mesh of the utility model it is to provide a kind of capacitance type touch key Macintosh, combination key structure letter It is single, it is easy to accomplish, it can be widely applied in existing touch control circuit.

To achieve the above object, the technical solution of the utility model are as follows:

A kind of capacitance type touch key Macintosh, it is characterised in that the Macintosh includes to touch chip and several lists Key wherein touching chip is connected to several singly-bounds, and is provided with Macintosh between several described singly-bounds.

Further, in several described singly-bounds, Macintosh is provided between connected singly-bound, and Macintosh is connected to Connected singly-bound.

Further, there are four singly-bound, (four keys are wherein one to the connection of four touch key I/O pins of the touch chip A concrete implementation mode can be five, six or other multiple), connection is there are three Macintosh between the singly-bound that is connected, thus It is combined into 7 keys, that is to say, that the connected touch key IO of every two can draw three capacitance type touch keys, and two The key on side is singly-bound, that intermediate key is then Macintosh, which is two touch key IO's Triggering mode is combined, this structure realizes a small amount of touch key I/O resource and realizes more applications keys.

Further, the Macintosh is made of two spring leafs, and two of them spring plate group is combined and does not connect Touching, thus constitutes Macintosh.

Further, the centre of described two spring leafs is provided with cut-off rule, with two, interval spring leaf.

The capacitance type touch key Macintosh that the utility model is realized, completely compatible traditional touch key-press, and make phase Same touch chip pin touch key IO picks out more touch key-press, touches under the premise of not changing original resources of chip It touches key to maximize using number, so that the resource utilization of user be made to increase, system can be reduced on the basis of function-stable Cause this.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the implemented Macintosh of the utility model.

Fig. 2 is the spring leaf top view of the implemented Macintosh of the utility model.

Fig. 3 is the implemented capacitance type touch key complete machine panel enclosure figure of the utility model.

Fig. 4 is the implemented Macintosh touch key IO AD value trend chart of the utility model.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

As shown in Figure 1, the Macintosh realized by the utility model, as shown in the figure, the Macintosh include touch chip With several singly-bounds, wherein touch four touch key IO (A8) of chip and be combined into 7 keys (A1~A7), wherein three A is Macintosh, and the connected touch key IO of every two can draw three capacitance type touch keys, that intermediate key is then For Macintosh (A2, A4, A6), (note: two are pressed the combination triggering mode which is two touch key IO There is no be overlapped for key semicircle).This structure realizes a small amount of touch key I/O resource and realizes more applications keys.

Four singly-bounds are a concrete implementation modes in the utility model, in other implementations, the number of singly-bound Amount can be five, six or other multiple.

Be illustrated in figure 2 the spring leaf top view of Macintosh, spring leaf the Macintosh need to be designed as two it is different by Key individual (2-1,2-1) is then combined into the form (i.e. close to place but do not touch mutually) of a capacitance type touch key. Finger need to touch the cut-off rule of intermediate black portions when structure shown in Fig. 2 touches every time, otherwise will be regarded as interfering inside program It masks.Structure shown in Fig. 2 is only a kind of reference configuration, it is not limited to this structure；Meet and deenergizes simultaneously in finger touch The structure of two different key combination individuals is covered, and key individual does not touch mutually again.

It is illustrated in figure 3 capacitance type touch key complete machine panel enclosure, 3-1,3-2, when 3-3 is in shelling machine, Arrow meaning position has separator bar, and purpose is to separate two spring leafs of Macintosh, and two spring leaf contacts is avoided to cause Entire touch key-press Macintosh button malfunction, when design, need to guarantee that key spring leaf can be placed into panel corresponding position.

Fig. 4 shows touch key IO AD value variation tendency, it is assumed that our touch chip is become by key pressing AD value It is small, key unclamp AD value become larger, then Fig. 4 show one from the process pressed to release.This process and traditional capacitive touch Touch key and indistinction.The gradually smaller trend of AD value is expressed as reversely herein in Fig. 4, and the trend that AD value becomes larger is herein In be expressed as forward direction.Be by key pressing it is reversed, it is positive that key, which unclamps,.

According to Fig.4,4-1 key first does not trigger, and then touch key IO AD value trend and meets door in becoming smaller Threshold value 4-2 (meet threshold value i.e.: | this sampled value of last time sampled value-| > x, x need sets itself), and then need to judge 4-3 by Key meets reversed trigger value (meet reversed trigger value i.e.: this sampled value > y of last time sampled value-, y need sets itself), it is assumed that this When it is noiseless, then this process thinks that key is pressed (key is effective)；Then when detect key meet threshold value and by When key meets positive trigger value (meet positive trigger value: this sampled value-last time sampled value > k, k need sets itself), this is pressed If key has been pressed, it is assumed that noiseless at this time, then so this process thinks that key is lifted (key release).

In use, setting singly-bound and the forward and reverse trigger value of Macintosh are opened after the completion of the sampling of touch key IO AD value Begin detection key.When the variation of any touch key IO AD value meets threshold value, all keys enter deterministic process, epicycle Processing terminate for AD value, waits the processing of lower whorl AD value.If new round AD value has been deterministic process state when handling, start to judge by Whether key meets forward and reverse triggering, herein singly-bound and Macintosh separate detection, reason be the structure of single-button and combination button not It is same to lead to capacitor charge and discharge Time Inconsistency.When finally carrying out key screening, also due to singly-bound and group the reason of press-key structure Screening need to be separated by closing key, determine specific that key triggering.

4 touch key IO of this programme realize the function (newly-increased Macintosh) of 7 touch key-press, compare traditional capacitance Formula touch key-press, key favorable expandability do not increase cost additionally on the basis of function amplification.

And the utility model has the advantages of simple structure and easy realization, and can be widely applied in existing touch control circuit, meanwhile, Combinations of the above key is also extended to three or four touch key IO groups are combined into the structure type of a Macintosh.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims

1. a kind of capacitance type touch key Macintosh, it is characterised in that the Macintosh includes to touch chip and several singly-bounds, It wherein touches chip and is connected to several singly-bounds, and be provided with Macintosh between several described singly-bounds；Several described singly-bounds In, Macintosh is provided between connected singly-bound, and Macintosh is connected to connected singly-bound.

2. capacitance type touch key Macintosh as described in claim 1, it is characterised in that described four touch of touch chip The connection of key I/O pin is there are four singly-bound, and there are three Macintosh, the connected touch key of every two for connection between the singly-bound that is connected IO can draw three capacitance type touch keys, and the key on both sides is singly-bound, that intermediate key is then Macintosh.

3. capacitance type touch key Macintosh as claimed in claim 2, it is characterised in that the Macintosh is by two springs Piece constitute, two of them spring plate group be combined and not in contact with.

4. capacitance type touch key Macintosh as claimed in claim 3, it is characterised in that the centre of described two spring leafs is set It is equipped with cut-off rule.