CN107526452B - Method for determining pressing position of soft silica gel key - Google Patents
Method for determining pressing position of soft silica gel key Download PDFInfo
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- CN107526452B CN107526452B CN201710631263.6A CN201710631263A CN107526452B CN 107526452 B CN107526452 B CN 107526452B CN 201710631263 A CN201710631263 A CN 201710631263A CN 107526452 B CN107526452 B CN 107526452B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0334—Foot operated pointing devices
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Abstract
The invention relates to the field of keys and discloses a method for determining the pressing position of a soft silica gel key.
Description
Technical Field
The invention relates to the technical field of key design, in particular to a method for determining the pressing position of a soft silica gel key.
Background
The key generally mainly comprises a plastic button, a single-particle or sheet soft silica gel key and a PCB, when the surface of the plastic button is pressed, the plastic button vertically moves downwards by a guide mechanism, and the plastic button treads a foot to compress the soft silica gel key, so that conductive carbon particles of the soft silica gel key are contacted with a metal finger contact of the PCB, and the circuit is switched on. The plastic button is stepped on the foot and is the plastic button and soft silica gel button top terminal surface contact part, and when pressing the button, this contact part directly exerts the effort to soft silica gel button, makes soft silica gel button sink to make inside conductive carbon particle contact the golden finger contact of PCB board and switch on the circuit.
For the conventional cross-shaped and H-shaped button stepping, the optimal position of the soft silica gel key pressed by the button stepping is easy to determine, so that the soft silica gel key can be stably pressed down to contact with a PCB contact after the button is pressed, the soft silica gel key cannot be inclined in the pressing process, and good contact and hand feeling are guaranteed. However, for irregular button steps such as convex shapes, it is difficult to find an optimal position where the soft silicone key does not tilt during pressing because there is no center of symmetry. The optimal position determination method for pressing the soft silica gel key by stepping on the button with irregular shape usually determines an approximate position by experience, and then repeatedly adjusts according to the actual effect. The adjustment of the key position relates to the structural modification of the key plastic part, so that the design period is prolonged, and the competitiveness of the product is reduced.
Disclosure of Invention
The embodiment of the invention aims to provide a method for determining the pressing position of a soft silica gel key, which can determine the optimal position of the soft silica gel key pressed by stepping on a foot by a button with an irregular shape, saves the cost, and improves the efficiency and the product competitiveness.
The method for determining the pressing position of the soft silica gel key provided by the embodiment of the invention comprises the following steps:
if the maximum span of the geometrical shape of the button stepping is larger than that of the soft silica gel key end face, establishing a surface area of a contact surface of the button stepping and the soft silica gel key end face, obtaining the centroid position of the surface area, coinciding the centroid position of the surface area with the centroid position, moving the centroid position of the geometrical figure to the central position of the soft silica gel key, namely determining the position of the button stepping and the soft silica gel key pressing once,
moving the button to step on the foot, changing the contact surface between the button to step on the foot and the soft silica gel key end surface, establishing the area of the contact surface between the button to step on the foot and the soft silica gel key end surface, obtaining the centroid position of the area, coinciding the centroid position of the area with the centroid position, moving the centroid position of the geometric figure to the central position of the soft silica gel key, namely determining the secondary pressing position of the button to step on the foot and the soft silica gel key,
remove once more the button is stepped on the foot, changes the button is stepped on the contact surface of foot and soft silica gel key-press terminal surface, establishes the button is stepped on the face territory of foot and soft silica gel key-press terminal surface contact surface, acquires face territory barycenter position, the barycenter and the focus position coincidence of face territory will geometric figure barycenter position moves soft silica gel key-press central point puts, confirms promptly the button is stepped on the foot and is pressed the position with soft silica gel key-press cubic, so circulate until the button is stepped on the foot and is close to predetermineeing the ideal value with the pressing position error of soft silica gel key-press.
Optionally, the method further comprises the following steps: if the button steps on that the maximum span of geometry is less than soft silica gel key-press terminal surface, nevertheless face territory barycenter position removes the back the button steps on that geometry surpasss soft silica gel key-press terminal surface, then according to the button steps on that the maximum span of geometry is more than the condition that soft silica gel key-press terminal surface is big is handled.
Optionally, the method further comprises the following steps: if the button steps on that the biggest span of geometry is little than soft silica gel key-press terminal surface, just face territory barycenter position removes the back the button steps on that geometry does not surpass soft silica gel key-press terminal surface, then establishes the face territory of geometry seeks the barycenter position in face territory, the barycenter and the focus position coincidence in face territory will the barycenter position of geometry is moved to soft silica gel key central point puts, confirms promptly the button steps on the position of pressing of foot and soft silica gel key-press.
Specifically, if the button steps on that the biggest span of geometry is little than soft silica gel key-press terminal surface just the button steps on that the foot is the font, establishes the face territory of font obtains the barycenter position in face territory, the barycenter and the coincidence of barycenter position in face territory will the barycenter position of geometry moves to soft silica gel key central point puts, confirms promptly the button steps on the foot and presses down the position with soft silica gel key-press.
Specifically, if the button steps on that the biggest span of geometry is little than soft silica gel key-press terminal surface just the button steps on that the foot is the protruding font of indent, establishes the face region of the protruding font of indent seeks the barycenter position in face region, the barycenter and the coincidence of focus position in face region will the barycenter position of geometry moves to soft silica gel key central point puts, confirms promptly the button steps on the foot and presses down the position of soft silica gel key-press.
It is from top to bottom apparent, use this embodiment technical scheme, owing to confirm the focus that the irregularly shaped button trampled the foot through the face territory method, make the focus that the foot was trampled to the button is arranged in the center of soft silica gel button can guarantee to press the in-process of soft silica gel button the soft silica gel button does not incline, has practiced thrift design cost and verification cost, has improved the competitiveness of efficiency and product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the convex button of the present invention after one-time stepping movement;
FIG. 2 is a schematic diagram of the concave-convex button according to the present invention after stepping on the foot once;
FIG. 3 is a schematic diagram of the irregular button after one movement;
FIG. 4 is a schematic view of another irregular stepping button according to the present invention
FIG. 5 is a schematic view of the irregular button of FIG. 4 after being stepped on by one movement;
FIG. 6 is a schematic diagram of the irregular button of FIG. 5 after being stepped on for a second movement;
fig. 7 is a schematic diagram of the irregular button of fig. 6 after three movements.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
in this embodiment, the end surface of the soft silicone key is circular or may be a symmetrical pattern, but most of the soft silicone keys pressed by plastic buttons in the industry at present are circular. The guide bone can enable the force acting on the surface of the button to be uniformly and vertically distributed on the button stepping, the density of the surface of the button stepping is uniformly distributed, and therefore the centroid position and the gravity center position of the geometric figure of the button stepping are coincident. The situation in the actual design is that the button is fixed to step on the foot, the soft silica gel key moves, the situation that the soft silica gel key is fixed to the contrary, the button is fixed to step on the foot to move, the positions of the soft silica gel key and the soft silica gel key are relative, and after the movement is completed through the area centroid method, the relative positions of the soft silica gel key and the soft silica gel key are determined. In order to be intuitive, the center of the soft silica gel key is coincided with the origin of coordinates, and actually, the center of the soft silica gel key also can not be coincided with the origin of coordinates.
The irregularly shaped button treads typically include convex button treads, concave convex button treads, and other irregularly shaped button treads.
If the button tramples the biggest span of geometric shape and is little than soft silica gel key-press terminal surface just the button tramples the foot and is the type of protruding, as shown in figure 1, the type of protruding is bilateral symmetry figure, then establishes the face territory of the type of protruding, will the type of protruding base midpoint removal reaches the origin of coordinates, seeks the barycenter position coordinate (0, 0.64) of face territory, the barycenter and the focus position coincidence of face territory, will the barycenter position of geometric shape moves to soft silica gel key central point, specifically for will the barycenter position of geometric shape moves to the origin of coordinates, promptly will the geometric shape is whole to be translated down 0.64mm, has confirmed promptly the type of protruding button foot is pressed the origin of coordinates that the position of soft silica gel key-press just at this moment.
If the maximum span of the geometrical shape of the button stepping is smaller than the end face of the soft silica gel key, and the button stepping is in an inward concave convex shape, as shown in fig. 2, the inward concave convex shape is a bilateral symmetry figure, the surface area of the inward concave convex shape is established, the middle point of the top edge of the inward concave convex shape is moved to the origin of coordinates, and the coordinates (0, -1.56) of the center of mass of the surface area are obtained, the center of mass of the surface area coincides with the center of gravity, the center of mass of the geometrical shape is moved to the center of the soft silica gel key, specifically, the center of mass of the geometrical shape is moved to the origin of coordinates, namely, the geometrical figure is integrally translated upwards by 1.56mm, namely, the inward concave convex shape is determined, the button stepping is performed on the position of the soft silica gel key, and the origin.
If the maximum span of the button stepping geometric shape is smaller than that of the soft silica gel key end face and the button stepping geometric shape does not exceed the soft silica gel key end face after the movement of the centroid position of the area, firstly, the irregular geometric shape is roughly placed at a position, as shown in fig. 3, the area of the geometric shape is established, the centroid position coordinate (-041, 0.42) of the area is obtained, the centroid of the area coincides with the centroid position, the centroid position of the geometric shape is moved to the central position of the soft silica gel key, specifically, the centroid position of the geometric shape is moved to the origin of coordinates, namely, the geometric figure is integrally translated to the right by 0.41mm, and then translated downwards by 0.42mm, namely, the position of the button stepping pressing the soft silica gel key is determined to be at the origin of coordinates at the moment.
In the above situations, the maximum span of the geometric shape of the button treading is smaller than the end face of the soft silica gel key, and the gravity center positions of the button treading and the soft silica gel key are not changed relative to the whole geometric figure, so that the position of the button treading and pressing the soft silica gel key can be confirmed after the gravity center is inquired through one area. When the maximum span of the geometrical shape of the button treading is larger than the end face of the soft silica gel key, along with the movement of the position of the button treading, the contact surface of the button treading and the soft silica gel key can change accordingly, so that the position of the button treading and the soft silica gel key can change synchronously, the position of the button treading and the soft silica gel key can not be determined once, and the theoretical optimal point can be infinitely approached after the button treading and the soft silica gel key are moved by calculating the gravity center position of the area for many times. Generally, the centroid of the three-time area is moved three times to be very close to the theoretical optimal point, and finally, the centroid of the fourth-time area is determined. The method comprises the following specific steps:
if the maximum span of the geometrical shape of the button stepping is larger than that of the soft silica gel key end face, establishing a surface area of a contact surface of the button stepping and the soft silica gel key end face, obtaining the centroid position of the surface area, coinciding the centroid position of the surface area with the centroid position, moving the centroid position of the geometrical figure to the central position of the soft silica gel key, namely determining the position of the button stepping and the soft silica gel key pressing once,
moving the button to step on the foot, changing the contact surface between the button to step on the foot and the soft silica gel key end surface, establishing the area of the contact surface between the button to step on the foot and the soft silica gel key end surface, obtaining the centroid position of the area, coinciding the centroid position of the area with the centroid position, moving the centroid position of the geometric figure to the central position of the soft silica gel key, namely determining the secondary pressing position of the button to step on the foot and the soft silica gel key,
remove once more the button is stepped on the foot, changes the button is stepped on the contact surface of foot and soft silica gel key-press terminal surface, establishes the button is stepped on the face territory of foot and soft silica gel key-press terminal surface contact surface, acquires face territory barycenter position, the barycenter and the focus position coincidence of face territory will geometric figure barycenter position moves soft silica gel key-press central point puts, confirms promptly the button is stepped on the foot and is pressed the position with soft silica gel key-press cubic, so circulate until the button is stepped on the foot and is close to predetermineeing the ideal value with the pressing position error of soft silica gel key-press.
For example, as shown in fig. 4, a complex irregular button is stepped on, the dotted line part is also a part of the button, the maximum span exceeds the range of the soft silicone key end surface, the contact surface between the button and the soft silicone key end surface is the solid line part in the figure, the surface area of the contact surface between the button and the soft silicone key end surface is established, and the position coordinates (0.63, -0.19) of the centroid of the surface area of the solid line part in the figure are obtained, because the part directly applies pressure to the soft silicone key. And then moving the centroid position of the geometric figure to the origin of coordinates, namely translating the geometric figure integrally to the left by 0.63mm and then translating the geometric figure upwards by 0.19mm, so that the coordinate origin of the position of the soft silica gel key pressed by the stepping of the button is determined at the moment.
As shown in fig. 5, the dotted line part of the edge of the original geometric figure enters the end face of the soft silicone key due to the movement, so that the geometric figure of the next surface area query is changed into the solid line part in fig. 5, a new surface area is established, coordinates of the centroid position of the surface area are queried to be (0.17, -0.10), and the centroid position of the geometric figure is moved to the origin of coordinates, that is, the geometric figure is integrally translated by 0.17mm to the left and then by 0.10mm to the top. Thus, the secondary position of the soft silica gel key pressed by the stepping of the button is determined at the coordinate origin at the moment.
As shown in fig. 6, in the geometry that moves again, the dotted line part of the edge enters the soft silicone key end face due to the reason of moving, and part of the dotted line part exceeds the soft silicone key end face, so that the geometry that is inquired in the next area changes again to the solid line part in fig. 6, a new area is established and coordinates of the centroid position of the area are inquired to be (0.06, -0.06), the centroid position of the geometry is moved to the origin of coordinates, that is, the geometry is translated to the left by 0.06mm first and then translated to the upper by 0.06 mm. Thus, the coordinate origin of the position of the soft silica gel key pressed by the button treading three times is determined.
As shown in fig. 7, in the geometry of the next movement, the edge dotted line part partially enters the soft silicone key end surface due to the movement, and partially exceeds the soft silicone key end surface, so that the geometry of the next surface area query is changed to the solid line part in the figure. And continuously establishing a new face area and inquiring the coordinates of the centroid position of the face area to be (0.02, -0.03). The inquiry is confirmation, namely the center position of the soft silica gel key is very close to the origin of coordinates, and the soft silica gel key does not need to move any more. Namely, the position of the soft silica gel key pressed by the stepping of the button is determined to be at the coordinate (0.02, -0.03).
From the three movements, the centroid coordinate of the geometric figure of the contact end face of the button stepping and the soft silicone rubber key can be seen, after each movement, the centroid coordinate of a new area is closer to the origin of coordinates, namely the center position of the soft silicone rubber key, such as from (0.63, -0.19) to (0.17, -0.10), then to (0.06, -0.06), and finally to (0.02, -0.03), and after multiple cycles, the centroid coordinate is closer to the origin of coordinates, namely the center position of the soft silicone rubber key, so that the ideal value is gradually approached, and errors are reduced.
If the button steps on that the biggest span of geometry is less than soft silica gel key-press terminal surface, nevertheless face territory barycenter position removes the back the button steps on that geometry surpasss soft silica gel key-press terminal surface, then according to the button steps on that geometry is the biggest span than the condition that soft silica gel key-press terminal surface is big is handled, through seeking face territory barycenter position many times and moving back infinite approximation theoretical optimum promptly.
Confirm the focus that the irregularly shaped button stepped on the foot through the face territory method, make the focus that the button stepped on the foot is arranged in the center of soft silica gel button can guarantee to press the in-process of soft silica gel button the soft silica gel button does not incline, has practiced thrift design cost and verification cost, has improved the competitiveness of efficiency and product.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (5)
1. A method for determining the pressing position of a soft silica gel key is characterized by comprising the following steps:
if the maximum span of the geometrical shape of the button stepping is larger than that of the soft silica gel key end face, establishing a surface area of a contact surface of the button stepping and the soft silica gel key end face, obtaining the centroid position of the surface area, coinciding the centroid position of the surface area with the centroid position, moving the centroid position of the geometrical figure to the central position of the soft silica gel key, namely determining the position of the button stepping and the soft silica gel key pressing once,
moving the button to step on the foot, changing the contact surface between the button to step on the foot and the soft silica gel key end surface, establishing the area of the contact surface between the button to step on the foot and the soft silica gel key end surface, obtaining the centroid position of the area, coinciding the centroid position of the area with the centroid position, moving the centroid position of the geometric figure to the central position of the soft silica gel key, namely determining the secondary pressing position of the button to step on the foot and the soft silica gel key,
remove once more the button is stepped on the foot, changes the button is stepped on the contact surface of foot and soft silica gel button terminal surface, establishes the button is stepped on the face territory of foot and soft silica gel button terminal surface contact surface, acquires face territory barycenter position, the barycenter and the focus position coincidence of face territory will geometric figure barycenter position moves soft silica gel button central point puts, confirms promptly the button is stepped on the foot and is pressed the position with soft silica gel button cubic, so the circulation is up to the button is stepped on the foot and is reached to predetermineeing the ideal value with the pressing position error of soft silica gel button.
2. The method for determining the pressing position of a soft silicone rubber key according to claim 1, further comprising the steps of:
if the button steps on that the maximum span of geometry is less than soft silica gel key-press terminal surface, nevertheless face territory barycenter position removes the back the button steps on that geometry surpasss soft silica gel key-press terminal surface, then according to the button steps on that the maximum span of geometry is more than the condition that soft silica gel key-press terminal surface is big is handled.
3. The method for determining the pressing position of a soft silicone rubber key according to claim 1, further comprising the steps of:
if the button steps on that the biggest span of geometry is little than soft silica gel key-press terminal surface, just face territory barycenter position removes the back the button steps on that geometry does not surpass soft silica gel key-press terminal surface, then establishes the face territory of geometry seeks the barycenter position in face territory, the barycenter and the focus position coincidence in face territory will the barycenter position of geometry is moved to soft silica gel key central point puts, confirms promptly the button steps on the position of pressing of foot and soft silica gel key-press.
4. The method as claimed in claim 3, wherein if the maximum span of the geometric shape of the stepping button is smaller than the end surface of the soft silicone key and the stepping button is in a convex shape, establishing a surface area of the convex shape, determining the centroid position of the surface area, wherein the centroid of the surface area coincides with the centroid position, and moving the centroid position of the geometric shape to the center position of the soft silicone key, thereby determining the pressing positions of the stepping button and the soft silicone key.
5. The method according to claim 3, wherein if the maximum span of the geometric shape of the button step is smaller than the end face of the soft silicone key and the button step is in an inward concave-convex shape, establishing a surface area of the inward concave-convex shape, finding a centroid position of the surface area, wherein the centroid position of the surface area coincides with the centroid position, and moving the centroid position of the geometric shape to the center position of the soft silicone key, thereby determining the pressing positions of the button step and the soft silicone key.
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| CN201710631263.6A CN107526452B (en) | 2017-07-28 | 2017-07-28 | Method for determining pressing position of soft silica gel key |
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| CN201710631263.6A CN107526452B (en) | 2017-07-28 | 2017-07-28 | Method for determining pressing position of soft silica gel key |
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| CN107526452B true CN107526452B (en) | 2020-07-31 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2548245Y (en) * | 2002-04-22 | 2003-04-30 | 神基科技股份有限公司 | Keyboard |
| CN201004389Y (en) * | 2007-02-05 | 2008-01-09 | 孙传军 | Single particle silicon rubber key easy to assemble and fix |
| CN205140819U (en) * | 2015-07-31 | 2016-04-06 | 宇龙计算机通信科技(深圳)有限公司 | Switching device , button and terminal |
| CN206236582U (en) * | 2016-11-17 | 2017-06-09 | 同光科技有限公司 | Button and the input unit comprising the button |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100816713B1 (en) * | 2006-09-20 | 2008-03-27 | 삼성전기주식회사 | Inputting apparatus |
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2017
- 2017-07-28 CN CN201710631263.6A patent/CN107526452B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2548245Y (en) * | 2002-04-22 | 2003-04-30 | 神基科技股份有限公司 | Keyboard |
| CN201004389Y (en) * | 2007-02-05 | 2008-01-09 | 孙传军 | Single particle silicon rubber key easy to assemble and fix |
| CN205140819U (en) * | 2015-07-31 | 2016-04-06 | 宇龙计算机通信科技(深圳)有限公司 | Switching device , button and terminal |
| CN206236582U (en) * | 2016-11-17 | 2017-06-09 | 同光科技有限公司 | Button and the input unit comprising the button |
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