KR20140084634A - Digital processing unit that can prevent deflections and typing error with applying dual-magnet and stroll ball - Google Patents

Abstract

Disclosed is a method for effectively returning a slider unit to an original position in a slide input device. A key button unit according to the present invention, which is an input system to input a user′s operation command according to a moving direction, comprises: a slider including a circuit board, to which four or more vertical signals can be inputted, and at least one magnet; a frame to support the slider to enable the slider to always move parallel to a base; the base including a magnet for always returning the slider to an original position with respect to the base after operation according to the operation command; and a vertical steel ball positioned between the magnet of the slider and the magnet of the base to reduce friction generated during the parallel movement of the slider. According to the method of the present invention, typing errors during character input can be reduced, and deflection of the slider unit can be efficiently prevented by a small operating force.

Description

[0001] The present invention relates to a device for preventing micro-deflection and typo using a double magnet and a steel ball.

The present invention relates to a technique capable of preventing fine deflection of a slider portion capable of moving in a horizontal direction (X, Y) in a character input device capable of inputting in a slide (X, Y) direction, And a technique for preventing fine deflection of the slider while suppressing a phenomenon in which the operating force is increased during sliding operation to the utmost while using a steel ball located on the same level. Also, this technique can be used to prevent the vertical (z) axis deviation of the slider portion moving in the horizontal (xy) direction.

 The micro deflection is a phenomenon in which the slider which should normally return due to various reasons such as weakening of the returning force of the operation switch, excessive frictional force of the operating part, heavy weight of the operating part and the like can not return to the original position. Such fine deflection phenomenon causes a problem of visual inconsistency with the peripheral case and the like. In addition, due to the characteristics of the slide input system in which characters are inputted only by a small working distance, the gap between the switches arranged in the direction of each slider becomes uneven due to such fine deflection phenomenon, and unintentional characters are input .

 Therefore, in the products using the slide input system, there is no problem in appearance due to elimination of the micro deflection, and there is a tendency that the technique which can always come back to the original position after the input of many slides is rapidly increasing.

In particular, since the self-mounting parts of the slider portion, such as a touch screen or the like capable of various information processing, are provided, the weight of the slider portion itself is getting heavy.

In most cases where the present slide input system is applied, the micro-sagging phenomenon and the deviation phenomenon of the slider unit equipped with such a large number of parts can not be solved, and the gap around the fine sagging phenomenon is enlarged so that the user can easily recognize such micro- I can not. However, many of the products to which the actual slide input device is applied have problems such as apparent fine deflection due to dimensional defects, character input mislabeling, deviation of the slider itself, and the like even if the actual size of the product is slightly increased. It is true. However, the existing micro-sag prevention techniques have proposed a method of increasing the actuation force of the switch corresponding to the direction of slide action of fine deflection and a method of increasing the elasticity of soft material such as rubber. This method can achieve the primary goal of preventing micro-sagging, but violating the precondition that the final actuation force of the slide input direction itself must be low in order to allow convenient slide input.

In particular, electronic devices that require a lot of character input due to mail, search, etc., such as the most remote-control smart phone, are required to lower the operating force to the utmost, and to reduce the fatigue of the finger to the frequent character input. If the method of increasing the operating force of the switch itself or the method of increasing the elasticity of the soft material such as rubber as in the previously proposed method is applied, it is obvious that the fatigue of the finger easily increases. Even if the actual operating force is increased, it is a small range of inconsistency that the micro-sagging phenomenon is visually problematic. The returning force in such a range is not the force of the operating range, but the force of the operating range Therefore, the effect is insignificant. Particularly, the slide input device for inputting characters is used very frequently. However, the switch and the structure of the horizontal input side are vulnerable to durability due to their characteristics, and the sagging phenomenon easily occurs.

Therefore, there is a desperate need for a slider sorting technology capable of accurately returning to the original position while realizing a very low operating force of the slide input device, to be.

In order to enable convenient input, it is necessary to give a light and sensitive sensation to both the horizontal signal and the vertical signal when assuming that one or a plurality of consecutive characters are outputted, and when the horizontal signal and the vertical signal are inputted at almost the same time . However, in the case of the existing techniques, a tension structure such as a spring or an elastic body such as rubber is proposed as a means of returning force to prevent micro deflection. As a result, it is impossible to receive the feedback as when the user inputs the vertical button because the horizontal direction is heavy, and the user can not feel the inconvenience and sense of horizontal direction.

Here we present a solution. Therefore, according to the present invention, a double magnet and a steel ball, rather than an elastic body such as a spring, are applied to the home position return of the operated slider to weaken the home return force when moving the slider to the area where the switch is operated, , Thereby informing the user of the correct signal processing process through the finger, thereby reducing the possibility of occurrence of typographical errors on the character input. It is another object of the present invention to provide a method for increasing the merchantability of the device itself by completely preventing the button of the IT device or the remote control using the slide input device from being slightly inconsistent with the appearance case, will be.

A slide input device using a magnet and a steel ball according to an embodiment of the present invention includes:

An input system for inputting a user's operation command in accordance with a moving direction,

A slider including a circuit board on which four or more vertical direction signals can be input and one or more magnets;

A frame supporting the slider so that the slider always moves parallel to the base;

 A base including a magnet to allow the slider to return to its home position always relative to the base after operation on an operating command;

And a vertical steel ball positioned between the magnet of the slider and the magnet of the base to reduce frictional force generated when the slider is moved in parallel with the movement of the slider. In this case, the magnet of the slider portion can be replaced with a metal or a non-metal object such as a metal that can generate magnetic force.

Also, the base may be replaced with a metal or a non-metal object such as a metal, which may generate magnetic force when the slider portion is a magnet. Further, the circuit board may be replaced with a flexible circuit board (fpc).

In addition, the circuit board can be replaced with an LCD module capable of touch input.

According to the present invention, fine deflection of a slider part receiving a vertical input or a touch input signal in an advanced device such as an IT device is prevented without increasing the overall operating force, and a feed back information signal It is possible to prevent the phenomenon of fine deflection of the slider portion and to prevent the occurrence of a typo in inputting a character. Further, since the overall operating force can be kept very small without micro-droop, the operation force of the button in the slide direction is lowered. As a result, not only a few characters but also a large amount of characters such as a messenger or an e-mail can be inputted without fatigue.

In addition, in the case of a slider portion having an information processing function such as an LCD touch screen, the slider portion is increased in weight than a slider portion having only a few buttons, so that the slider input device or the like can be raised or laid In the case of inputting characters, it is possible to prevent the occurrence of a minute sagging phenomenon easily due to the weight of the slider provided with electronic parts and devices without increasing the overall operating force.

In addition, since the magnetic attraction is stronger as the distance gets closer, the existing slide input related products, which do not show the double magnet and the steel ball approach, Apart from that,

It has been found that the fine deflection phenomenon occurs easily in the outer appearance due to the accumulation of assembly tolerances and that the button assembly of the slider portion is aligned with the outer case and the like properly. However, when applying the method of double magnet and steel ball, Precise alignment is always possible, regardless of tolerances, errors, and poor injection, such as burrs.

Further, in the slide input device provided with the double magnet and the steel ball, a constant minimum frictional force can be maintained even when the external force such as the weight of the slider portion and the pressing force of the finger is changed, and the smooth operation force can be maintained. Because of this minimal frictional force,

Even if the returning force of the operating switch is small, it is possible to accurately return to the home position without deflection of a minute amount.

Also, by using a simple double magnet and a steel ball without using a complicated structure operation switching method to prevent fine deflection as in the previously proposed method, it is possible to achieve miniaturization of the system and reduction of manufacturing cost.

Further, due to the characteristics of the slider input device in which a character is inputted by inputting a vertical (z) to a slider performing a horizontal (xy) motion, the vertical z value of the slider itself due to a problem of durability after operation, Axial lifting can occur. Using double magnets and steel balls, it is possible to magnetically block such vertical (z) axis lifting.

1 is a view showing a four-ground combined slide input structure to which a double magnet and a steel ball are applied according to an embodiment of the present invention;
2 is a view showing a dome fpc as a vertical input method in a four-ground combined slide input structure according to an embodiment of the present invention;
3 is a view showing a PK (Plastic keypad) Type button and a PCB as a vertical input method in a 4-fold combination slide input structure according to an embodiment of the present invention
4 is a view showing a state in which a large deflection is prevented by the operating force of the operation switch when deflection due to the self weight of the slider occurs
5 is a view showing a state in which an apparent fine deflection appears after a long time operation by applying a switch with a small operating force so as not to give a load to a finger
6 is a diagram showing a state in which a sub structure is applied and an unused state in order to prevent a discrepancy between a case and a key button of an existing one (z)
FIG. 7 is a view showing an example in which etching is performed by adding a hole in order to obscure the phenomenon of fine deflection
Figure 8 shows the actual measured dimensions of both gap values when a fine deflection phenomenon occurs
drawing
Fig. 9 is a drawing introducing a 4-fold serial type slide input structure to examine a coup curve
10 is a view showing an operation switch, a base, a frame, and the like in a four-ground,
11 is a diagram showing an example of a circuit board on which a vertical input is possible in a slide input device and an example of a character input
12 is a view showing an operation switch in each direction and a horizontal input direction of the four-ground in-line type slide input device
13 is a sectional view showing a cut surface before and after the slider is moved in the horizontal direction in the four-fold in-line type slide input device
14 is a view showing application of an iron pin which does not generate a magnetic force in order to facilitate understanding of a tact switch operating force
15 is a graph showing the change of the operating force according to the horizontal directional operation of the slider and the force of the actual operating force and the returning force in the fine deflection section,
16 is a view showing an example of a dome switch operated by an external vertical load;
17 is a graph showing a difference between an expected deflection amount and an actual deflection amount of an operation switch for applying a tactile sensation applied to the slide input device
18 is a diagram illustrating a slide input device capable of receiving information by touching in a 4-fold combination character input device according to an embodiment of the present invention
19 is a view showing an example of a four-ground combination formula in which a spring is used instead of a double magnet and a steel ball to prevent micro-sagging
20 is a view showing an actual operating force curve of a slide input device to which a spring is applied to prevent fine deflection
21 is a view showing that the magnets of the slider portion and the magnets of the base portion are arbitrarily changed to ordinary steel balls having no magnetic force in order to understand a process in which a horizontal signal is not reliably transmitted by a spring,
Fig. 22 is a view showing a four-joint combination type in which a spring is applied instead of a double magnet and a steel ball for preventing micro sagging;
23 is a diagram showing that when the user intends to input a character, the processing apparatus arbitrarily arranges horizontal and vertical signals in arbitrary character processing and results in different results
FIG. 24 is a view showing a slide input device according to an embodiment of the present invention, in which a magnet, a steel ball, and a frame
FIG. 25 is a graph showing a change in the operating force in the diagonal direction operation of the four-ground combination input device according to an embodiment of the present invention and a change in the magnetic force therefrom
Fig. 26 is a graph showing a comparison of the final operating curves when a spring is applied to prevent fine deflection and when a double magnet and a steel ball are applied; Fig.
27 is a view showing a frame as a constituent factor of a four-ground combination type according to an embodiment of the present invention, a magnet of a slider portion, a magnet of a base portion, a steel ball, a tact switch to which a wire is connected,
28 is a diagram showing an example of inputting a specific character by the 4-fold combination character input device according to the embodiment of the present invention
29 is a diagram illustrating a method of preventing mis-typing in a horizontal direction in a four-folded combined letter input device according to an embodiment of the present invention
30 is a graph showing the relationship between the processing and the output value of the arithmetic processing unit when the double magnet and the steel ball are applied and when the double magnet and the steel ball are applied in the 4-ground combination type or 4-ground parallel type and 8- Drawings showing differences
31 is a view showing an example in which an 8-ground tandem type is introduced to examine the concept of a princess distance;
32 is a diagram showing the operation of the tact switches in each direction when there is no prime distance in the 8-ground tandem system.
Fig. 33 is a diagram showing the operation of the tact switches in each direction when the princess distance is secured in the 8-ground tandem system. Fig.
34 shows princess distance, working distance, and buffer distance in an 8-wire in-line system.
Fig. 35 is a view showing that the tact switches in each direction operate independently in eight directions when the prism distance is secured; Fig.
Fig. 36 is a diagram showing a phenomenon in which a possibility of occurrence of a misfit becomes higher when the slider is moved in the horizontal direction in the 8-ground in-line system. Fig.
37 is a drawing showing a trigger placed on the west princess distance limit line
38 is a view showing an example in which a double magnet and a steel ball structure are applied to an existing eight-
Fig. 39 is a graph comparing the tactile sensation of the final operating switch when a coil spring is applied and a double magnet and a steel ball are applied in order to prevent micro-sagging phenomenon in an 8-wire in-line system.
Fig. 40 shows a case where only double magnetism is applied without applying both double magnets and steel balls in a four-ground combination system; Fig.
41 is a view showing insertion of a bush for reducing frictional force between a slider part and a base part in a four-ground combination system;
Fig. 42 is a view showing a hinge for a cellular phone to which a bush is applied; Fig.
Fig. 43 shows that the bushing and the bushing and the corresponding surface are not smooth in the slide input device; Fig.
44 is a view showing a micro-slip phenomenon and a deformation state of a working force resulting from application of a smooth bushing.
45 is a view showing a friction force generation prevention method of a steel ball in a double magnet and steel ball structure according to an embodiment of the present invention;
46 is a graph showing a friction tolerance due to steel balls in a double magnet and steel ball structure according to an embodiment of the present invention;
FIG. 47 is a graph showing a friction tolerance when a single magnet, not a double magnet, is applied to a double magnet and a steel ball structure; FIG.
FIG. 48 is a view showing a double magnet and a steel ball applied to a four-ground combination slide input structure according to an embodiment of the present invention; FIG.
FIG. 49 is a graph showing that a steel ball is plated with a conductive material such as copper or gold to transmit a vertical input signal directly to a processing apparatus through a steel ball without a circuit such as an FPC in a double magnet and steel ball structure according to an embodiment of the present invention drawing.
50 is a view illustrating movement of a double magnet and a steel ball structure according to an embodiment of the present invention, without the use of any other fixture, due to the fact that the slider portion does not easily come off due to the double magnet.
FIG. 51 is a diagram showing a function when switching from a character input mode to a mouse input mode by an external mode change in a double magnet and steel ball structure according to an embodiment of the present invention
FIG. 52 is a diagram showing a state in which two signal input terminals are provided in the directions of north, south, south, east and south to implement a delicate operating force in a four-ground combination system according to an embodiment of the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted. In addition, the terms described below are defined in consideration of the functions of the present invention, and may be changed according to intentions or precedents of users, operators, and the like. Therefore, the definition should be based on the contents throughout this specification.

The three-dimensional input system in the present specification refers to a device in which the recognizable input direction (weight, axis) is extended from one direction to three directions. The conventional vertical input type keypad is a device in which the recognizable input is vertical One direction is called a one-dimensional keypad (One dimensional input).

In the present specification, the term "base" refers to a component including an alignment projection, a hole, and the like so that a terminal, a magnet, and the like can be seated and the slide input device can be accurately seated in a final input device such as a remote controller.

In the present specification, the base portion refers to a state in which parts such as a terminal and a magnet are all mounted on the base part.

In the present specification, the term "slide" refers to a component which is always orthogonal to the base by a frame, and is capable of placing a vertical input circuit component, a GND terminal, a magnet, and the like.

In this specification, the slide portion refers to a state in which all components such as a terminal, a magnet, a circuit PCB, and an FPC are mounted on a single part of a slide.

Throughout the specification, when a vertical input signal is referred to, the vertical input axis means the x, y, and z-axis.

Throughout the specification, the horizontal direction means the direction on the xy plane in the x, y, and z axes.

In the entire specification, the horizontal input information means a signal in the XY axis direction or a result signal, and the vertical input information means a signal in the Z axis direction.

Throughout the specification, parallel movement with respect to the base means that it always moves in parallel with the base in the xy plane without self-rotation.

Throughout the specification, three-dimensional input with simultaneous operations means outputting characters in a vertical direction input signal and a horizontal direction input signal in order to make one character, without regard to order.

In the specification, a three-dimensional keypad input system generally refers to a simultaneous input three-dimensional keypad.

Throughout the specification, a three-dimensional input with sequential sperations outputs a vertical direction input signal and a horizontal direction input signal by a user in order of a different character signal in order to make one character .

Throughout the specification, the trigger refers to the projection of the slider portion to actuate the actuating switch in the base.

Throughout the specification, the slider portion includes a circuit board, a fixing agent (a screw, an adhesive, a double-sided tape or the like) provided on a slider that is provided on a slider that always moves parallel to the base by a frame on an xy plane, ), And the like.

Throughout the specification, hacking refers to the operating force at which the finger is able to perceive the operation of the switch due to a sharp decrease in operating force at the point where the switch is actuated.

Throughout the specification, steel ball refers to a ball made of a relatively strong material rather than a steel ball.

In this specification, micro-slip means that irregular frictional force is generated due to friction between the slider and the frame, between the frame and the base, and between the base and the slider.

In the present specification, the hysteresis curve means a point in time from when the operation switch starts to be pressed to when the operating point of the operating switch and the operating point of the operating point start to end.

In the present specification, steel balls include not only general steel balls but also other materials having physical properties such as ceramics and plastics.

Here, the tandem type is referred to as a tandem type in which four basic directions of four basic directions of north, south, west, north, south, south, east and south are implemented by operating switches arranged in four basic directions. It is called combinational type that the tactile sense is realized by a separate operation switch instead of four basic directional operation switches.

In the present specification, the 8-wire in-line type slider, which always moves in the horizontal direction by the frame, can output independent signals different in eight directions, and has eight tactile switches.

In the present specification, the four-ground tandem type includes that the slider always moving in the horizontal direction by the frame can emit eight different direction signals as four independent ground signals and four tactile switches.

In the present specification, the four-ground combination formula consists of eight directions in which different signals can be output, and a switch capable of taking a tangential direction in these directions means a system composed of one or a plurality of switches.

The reason for dividing the slide character input device into three pieces of 8-fold serial type, 4-fold serial type, and 4-fold combination type throughout this specification is not to distinguish the three types themselves, but the double magnet and the steel It is clear that this is to show if differences occur.

In the present specification, the hysteresis curve is a graph showing a change in unique operation force versus time according to a force applied to a switch in an operation switch having a different operating force and a different returning force from a push switch and a hook switch in which the pressing force and the returning force are different from each other Quot; This graph also refers to both the operating force referencing the minimum force for the switch to contact and the return force referencing the maximum force to be shorted when the switch is in contact.

The relationship between the horizontal operating force and the vertical operating force in the slide input device will be described. A slide input device refers to a device for inputting characters based on vertical input and horizontal input information. In the case of the simultaneous input type three-dimensional keypad in which the vertical input and the horizontal input information are applied without distinction to the input order, the inputting of the vertical input signal and the horizontal input signal in the simultaneous input type three- Ideal. When the input is made at the same time, the occurrence of the typos due to the input delay is significantly reduced, and the input speed of the sentence becomes faster. In order for the vertical input signal and the horizontal input signal to be simultaneously input, the vertical input signal and the horizontal input signal must be parallel to each other when shifted by the finger.

 Such parallelism does not mean that the actuating force of the actuating switch which is vaguely in charge of the vertical input signal is equal to the actuating force of the actuating switch which is in charge of the horizontal input signal.

 The finger pressing the button is performed in the same direction as the operating direction of the button. The relatively large operating force can be input without difficulty, but the finger pushing the button is performed in the direction perpendicular to the operating direction of the button, The crowd comes. Therefore, when considering the equilibrium of the operating force in the vertical direction and the horizontal direction, firstly, the vertical and horizontal operation correction coefficients should be considered.

 Here, the case where the number of vertical inputs is one or not is referred to as a general slide input device, and the case where the number of vertices responsible for vertical input is two or more is defined as a three-dimensional keypad.

In the four-fold combination slide input structure in which the horizontal square working distance 101 is set to 1.0 mm as shown in FIG. 1, the balance between the horizontal inputs 108 and 109 and the vertical input 107 is considered to realize an ideal operation force. If the operating force 103 of the vertical dome switch corresponding to the vertical direction input button 102 is selected to be 120 g, then the corresponding horizontal input force 104

40 g, and the vertical and horizontal operation correction coefficient is 0.3. When the Z-axis 107 vertical input operating force 103 is changed to 100 g, the horizontal input force on the xy plane 108, 109 is about 30 g in consideration of the vertical and horizontal operation correction coefficients.

In this way, even if the operating force of either one is increased or decreased, a convenient character input is possible without a bias of input in either the vertical (107) or horizontal (108,109) due to the vertical and horizontal operation correction coefficients.

As shown in FIG. 2, the slide character input device may include a dome and an fpc as vertical input devices. For example, the dome 120, which is a vertical input device, and the FPC 121, which transmits a switch of a dome, are 120 g, 180 g, 210 g,

Four of 280g are mainly used. Depending on the hardness difference of the rubber keypad bonded thereto, the resistance is different, and even if a dome of 210 gf is used, the final operating force of the user varies from 280 gf to 360 gf. Even if it is a vertical input device of a conventional one-dimensional keypad, it is very difficult to calculate an ideal value because it is very different from country, age, and sex. Here, however, it is clear that the introduction of the unfamiliar concept of vertical and horizontal operation correction coefficients is intended to help understand the slide operating force described throughout the specification, rather than describing such a coefficient itself. An environment where fine deflection occurs in the slide input device differs from an input environment of an input device such as a PC keyboard.

Most of the PC keyboards are placed on a desk and input on a flat surface. However, when a slide input device is mainly used, most of the keyboards are vertically erected or used obliquely. You can even think of manipulating it upside down on the ground. In the case of a three-dimensional keypad system, when it is erected vertically to the ground, unlike the four-directional combination, for example, when it is vertical, the slider is deflected downward due to the weight of the slider itself .

3 shows a slide input device including a PK type button 125 as a vertical input device. 3 shows a process of removing the circuit board 126, the keypad injection object 125, the dome switch 127, and the like on the slider in FIG.

As shown in FIG. 4, since the slider itself can move in a plane (xy) direction, when it is vertically erected, it is deflected downward due to its own weight. FIG. 4 shows the shape before and after the slider 133 is lowered to the deflection amounts 132 and 135 of 1.0 mm by its own weight. In the case of the four-directional combination input device, large deflection of the operating force (136,137) of the external tact switch connected by a wire or the like is prevented by itself. In the case of a four-way combination input device, as well as a four-way tandem type and an eight-way tandem type, a relatively large deflection can be prevented by the operating force of the operating switch.

As shown in FIG. 5, the remote controller 140 includes a slide input device capable of inputting characters. There is no large deflection due to the resistance of the slide direction operation switch in the inside, but a slight deflection is shown even though the remote control is not erected. This is because the slider including the vertical input button is not in the correct position after operation with respect to the base. Even if the user is not a sensitive user, the difference between the vertical gap 141 and the horizontal gap 142 can be relatively easily found.

Figure 6 shows a cross section of a universal uniaxial input keypad. 6, the return 156 of the physical button 152 is not associated with the apparent gap problem in the input direction 151 of the input device 150 using the conventional uniaxial input keypad. If the ideal horizontal direction input stroke is 0.5 mm, then the vertical direction input stroke 153 is smaller than the horizontal direction input stroke by about 0.15 mm, and if the actuating button is in the outer design gap direction 154 and the input direction 151, It is judged that there is no problem even if the Z-axis direction pressing amount of the keypad is not easily corrected after completion of the operation in the same manner as the mounting seat 155, film.

Referring to FIG. 6, it can be seen that there is a difference between a non-mass-producible structure and a mass-producible structure due to presence or absence of the sus (149, 160) in the horizontal direction. There is little difference in the ability to press the button in both the structure that can not be mass-produced and the structure that is possible. Specifically, the actual test results show that the operating force of 5 gf tends to increase due to the increase in resistance due to the installation of the sus structure in the presence of the sus structure. When the dome switch (180 gf) with the same operating force is applied, the final CTR results of the chassis-free structure will have a value of 260 gf to 280 gf. On the other hand, the final CTR test result of the structure with the cusp has a value of 265gf ~ 285fg. Therefore, it can be judged that there is no defect in the function in view of the operating force variation according to general injection and production conditions.

However, at present, the PK type keypad can not be mass-produced in Korea, China, and North America. This is because, in the absence of a chassis structure, the keypad may be partially inconsistent after operation of the peripheral sample case and the button, and the button located midway of the keypad may naturally rise after operation. It is obvious that the inconsistency between the button and the case is not a factor affecting the function even after the problem occurs. Nevertheless, each manufacturer prohibits the mass production of the unilateral keypad because the alignment between the button part and the case is very closely linked to the merchantability.

7 shows an input device having a slide character input system. As shown in FIG. 7, in the case of a slide input device which is moved not only in the vertical direction but also in the horizontal direction, which is a design gap, for an input signal, this directly affects the merchantability of the product. Generally, in the case of the uniaxial keypad, when the tolerance for the gap between the button and the outer case is 0.05 mm or more, the appearance becomes defective. In other words, if the keypad button assy is pointing sideways 0.05mm, it can be a bad process. This is not a one-sided decision by the manufacturer, but rather a criterion by which the user receives the product and returns it to the general defects. FIG. 7 shows an example using the etching 171 to prevent the gap from being seen in the 8-way in-line type. And the holes 172 are provided in the etching to prevent the gap deviation due to the fine deflection as much as possible.

8 shows an input device having left and right gaps. As shown in Fig. 8, even if etching is used, the microscopic deflection itself which is apparent can not be prevented. Referring to FIG. 8, the gaps of the left 161 and right 162 are 0.7 mm and 0.2 mm, respectively, and these dimensions can be clearly distinguished from the appearance of the general public.

Fig. 9 shows a four-fold in-line type character input system. 9, there is shown a process for removing a plastic keypad button 201 for operating a dome and then removing a circuit board 203 including four dome 202 for receiving a vertical signal. Here, in order to prevent the phenomenon of increase in operating force due to frictional force,

And the steel balls 205 are disposed on the four corners 204, respectively.

10, four operation switches 211 for inputting signals of east, west, south and north according to the horizontal movement of the slider 210, a base 213 for fixing the operation switch, Gt; 212 < / RTI >

11, when the user presses the first button 220 and then pushes the button in the northwest direction 221 to display a character b (222), the user presses the first keypad button 220 (220) on the circuit board 223, The dome switch 224 corresponding to the dome switch 224 should be pressed in the vertical direction.

FIG. 12 shows an incision 320 of the user to see the process of moving in the horizontal direction to enter the letter b 222 in the northwest.

Here, when the slider 322 is moved in the direction of the diagonal line 321,

On the opposite side, the east operating switch 325 and the two south operating switches 326

. It is obvious that this position can be changed according to GND or other conditions.

FIG. 13 shows cut surfaces before and after the slider is moved in the diagonal direction 321, respectively.

14 shows that the steel ball 342 and the slider 343 are moved to a distance of distance 1 (344) and distance 2 (345), respectively, with reference to the base 341 as viewed from the cut surface after moving the slider. More specifically, after the slider moves in the diagonal direction 350, the slider 343 and the iron pins 346,

A steel ball 342 included in the base 341, and a frame 348 for moving the slider in the parallel direction.

Here, in order to help understand the effect of the double magnet described later, instead of the magnet pin, it is replaced with the iron pin (346, 347) which has no influence of the magnetic force.

Fig. 15 shows the actuation force and the return force curve of the operating switch located on the south side of the return force curve and the operating force on the south switch and the east switch, which is operated when the slider is moved in the diagonal direction in Fig. 14 .

15, the distance d1 at which the slider starts moving according to the operation of the slider, the distance d2 at which the tact switch is operated, and the distance d3 at which the tactile sensation is completed are divided into an operating force 380 and a returning force 381 ) Are shown in the graph. It can be seen that the return force 381 of the operation switch in the entire operation region has a value about half that of the operating force 380. [ In the section 382 in which the fine deflection takes place, both the operating force 380 and the returning force 381 are very small in the section 382 in which the fine deflection actually occurs over the entire portion of d1, d2, and d3 . If the total weight of the slider portion is 20 gf when the remote controller provided with the actual slide input device is erected, the operation switch can not defeat the self weight of the slider portion and is deflected.

16 shows the operation of the dome switch to which the urethane projections 392 are added to the general tact switch. In the figure, the dome switch exhibits a large resistance to external forces, but does not exhibit a large resistance when the dome is deformed after its own restoration. therefore

There is a difference between the operating force 390 and the restoring force 391. After entering a character, the slider follows the return force curve, not the operating force curve, because the switch used for operating force has a hysteresis. Depending on the characteristics of the shape that gives the operating force, the tactile force (393) stays according to the external force up to a certain extent, but when the moment passes, it quickly breaks down.

 However, in the case of returning, that is, in the case of restoring 391 from the collapsed shape to the circular shape, the force depending on the shape is usually weak.

17, the tactile sense can be influenced by the difference between the operating curve point 485 and the operating bottom point 484, and typically the greater the force difference between the operating curve point 485 and the operating bottom point 484, The sensitivity becomes excellent. In other words, the sense of turning the dome upside down at your fingertips means that the person can more clearly recognize that the switch is working. The restoring force is not due to the force of the shape itself, but usually due to the inherent elastic force of the material. This elasticity value is a major factor not only in restoring force but also in operating force. This is because, when the overall operating force is taken as a reference, when the restoring force is increased, the specific gravity of the force due to the elasticity of the material is increased at the maximum operating force. If we look back at the case of returning, the force of the finger is activated when the slider is pushed in diagonal direction, but the return force of the operation switch is used to return the weight of the slider to the correct position.

 The dome is designed to exert a great resistance to the force of its own shape. However, when the shape is returned after being pressed, a large force can not be exerted. In the example, the dome is taken as an example, but other examples in operation switches such as a leaf spring and a coil combined spring in a general operation switch are similar.

 The reason for making such a shape is that, in the case of the example shown above, the feeling of upside-down of the dome is increased in the entire operating force portion, and accurate feedback of the increase of the finger force on the fingertip is given, , To maximize contact stability for signal processing when activated. The dome shape is supposed to have a high resistance to react by external force, but a large force can not be exerted at the time when the shape of the dome is restored.

Referring to Fig. 17, the deflection amount 481 after the operation in Fig. 17 is larger than the expected deflection amount 480 in this case, not the deflection due to the weight of the slider but the deflection phenomenon after the operation switch operation. This is because, as mentioned above, the deflection of the slider portion follows the return force 483 curve rather than the operating force 482 curve.

 Therefore, it is obvious that micro-deflection occurs due to a small return force when various slide input techniques are used. Particularly, when adding circuits such as LCD modules, LEDs, and vibration motors to the slider part, this fine sagging phenomenon will cause more problems.

 FIG. 18 shows a state in which a PCB circuit capable of transmitting a vertical input signal is replaced with an LCD touch screen capable of inputting more information with flexibility.

In the figure, the LCD touch screen 500 is fixed to the slider portion 501. The touch input area 502 of the LCD screen is divided into four areas, and when the touch information is input to the divided area, the input signal is processed. The slider part is not only an LCD module,

(503). In such a case, since the weight of the circuit becomes heavy, in order to prevent sagging of such a weight, when a conventional presentation method is used, a considerable amount of restoring force is required, which eventually results in a heavy horizontal operating force . Although various slide input techniques have been proposed, there is no technique to prevent micro-sagging within 0.2 mm from the original position after inputting characters in the horizontal direction in a region having a maximum horizontal operating force of less than 100 g.

In this paper, we propose a technique to prevent micro-sagging within ± 0.005mm in the error range from the original input in the horizontal direction in the region with the maximum operating force of less than 100g.

Find out the character input error phenomenon that may occur due to fine deflection. The tactile curve of the tact switch is very important in character input. In the uni-directional keypad, the letter input is determined by a factor of one in the vertical direction, which is also possible with some feedback. The touch LCD module, which is one kind of unilateral keypad, can input characters relatively easily by means of displaying characters on the screen in a large size on the screen or arbitrarily outputting an operation sound when a character in the direction is pressed .

However, in the case of a three-dimensional keypad, both the vertical input and the horizontal input must be processed at the same time. In this case, the user must actively know the input process of the character at both the vertical input and the horizontal input at the fingertip. If you do not know this information properly, it is possible that typographical errors may occur even if only one horizontal and vertical input is made at the correct time.

As mentioned above, micro-sagging occurs in general letter input devices. This is because the actual fine deflection phenomenon is the area where the switch starts to operate, because the moving distance in this area is so short that the operating force to fix the slider to the center is also very weak.

19, in order to prevent occurrence of an initial character input omission due to external deflection and restoration of the origin of the slider due to frictional force after inputting characters in a state in which the 4-ground combination system is applied to a 4-ground combination system applied to a remote controller, And a spring 510 instead of a steel ball.

20 shows the operation curves of the horizontal input switch, the vertical input switch and the spring applied to the four-direction combination expression from the origin state to the arbitrary character 563 allocated in the north-west direction. Referring to FIG. 20, the tact switch has a typical operating force profile 540. However, when a micro-sag preventing spring is applied thereto, since the spring has a linear graph 546 according to the elastic modulus,

The graph changes to a curve 549 that is close to a straight line.

Referring to FIG. 20, when the spring is not applied, the user can easily recognize the operating point 561 by sensing the pressing of the dome 560 by the vertical input signal 562. However, when a spring is applied to prevent micro-sagging, in the case of a horizontal signal, the spring elastic force 547 weak at the operating point 544 at which the tactile sense occurs is increased at the operating bottom point 548,

 The final actuation force graph shows that the tact switch has changed slightly (566). Here, it can be seen that there is almost no difference in the operating force between the operating point 563 and the operating bottom point 564 in the actual operating graph 549 that combines the operating force of the western tact switch and the load variation due to the change in the distance of the spring. In this state, it is difficult for the user to clearly understand the operation process of the tact signal. Also, it can be seen from the graph that the spring 565 is small in the required fine area 567 and thus fails to provide a resistance to return the slider to the center position. In the resultant graph, the total operating force is further weighted, and the graph of the operating force, the difference between the operating section and the section after the shape collapse becomes smaller, the feedback becomes smaller and the recognition and prediction of the input information through the fingertip becomes more difficult.

FIG. 21 assumes that there is no magnetic force in the double magnet in order to help understand the operation principle of the double magnet and the steel ball system in the information processing. In order to explain the problem that the horizontal signal among the horizontal signal and the vertical signal during the information processing process are not generated by the spring, it is a case of the four-ground combination formula. In the module, the steel ball 582 is mounted to eliminate the possibility of additional problems due to the dynamic friction of the slider, and the magnet 580 of the slider portion and the magnet 581 of the base portion are here assumed to be aluminum pins having no magnetic force at all. Also, the tact switch 583 connected by a wire assumes that no signal is transmitted. The tact switch operates according to the amount of displacement, and does not operate when the slider moves in the direction of north, south, east, and south with small displacement, while the tact switch is operated in diagonal direction with a large amount of displacement, .

22, the output of the diagonal direction character is operated when two different terminal signals 600 and 601 and a vertical input signal are input, and in the case of processing by character output in the north, south, south, and north directions, (600) and when one vertical input signal is input. As mentioned above, the three-dimensional keypad has a simultaneous input method and a sequential input. In this case, only the simultaneous input is dealt with because of convenience and speed of the input. In the simultaneous input system, the order of the horizontal signal and the vertical signal input for generating one character is not considered. If the user outputs only one character, no typos in this order will occur. Horizontal and vertical signals are used to make only one character.

However, if you use horizontal and vertical inputs to create multiple characters, you must determine what horizontal and vertical signals are assigned by each successive output character.

 If such a determination is not made, the arithmetic processing unit will arbitrarily judge which horizontal and vertical signals the horizontal and vertical signals are for.

Referring to FIG. 23, when the operating force information is unclear and the user does not know the operation process in the horizontal direction, the process of misinterpreting due to other operation processing will be described.

FIG. 23 shows the number of cases in which the user can input a BC in a 4-ground combination input device when the input is intended. The rectangle 610 on the image is the result of the program arbitrarily determining that the user has used the horizontal input and the vertical input for this intention. In the first case (611) of typos, the user presses the 1 key to enter B, slides in the northwest direction 612, again presses the 1 key, and slides in the north direction 613. However, in reality, the inputted horizontal and vertical signals are only a signal in which the first button is pressed twice, the north direction is pressed twice, and the west direction is pressed once. Therefore, in the first case, the user presses the button 1 and slides in the forward direction. However, before pressing the button 1, the user first presses C in the north direction, outputs C in the north direction, The north direction was considered to have been pressed in the first press of the first button, and the opposite letter appeared. If you try to hit BC here, you can see at what stage the user presses the dome due to the hitting of the dome in case of a vertical input signal. However, in the case of a horizontal signal, the information on the operating force profile is not recognized in a quick character input. Therefore, if there are four buttons on the slider section and one of them is used to hit BC, the result is only 25% accurate.

Fig. 24 shows conditions for explaining Coulomb's law applied to a double magnet and a steel ball. In order to comply with Coulomb's law, one of the two pin-type magnets is mounted on the base 621 and the other is mounted on the slider portion 620 in order to fulfill the Coulomb's law. As the slider portion 622 moves, the pin-shaped magnet 620 of the slider portion is away from the magnet 621 of the base portion in a direction parallel to the magnet 621, and thus the distance 625 between the magnets is distant.

FIG. 25 is a graph showing the change in operating force of the tact switch and the change in magnetic force between the double magnet and the steel ball according to the operating distance applied to the character input system when the slider moves to the northwest. Referring to FIG. 25, the profile of the tact switch connected to the wires shows that as the working distance increases, the operating force gradually increases, and then the operating force decreases sharply. However, as seen from the profile 706 of the mounted double magnet, as the working distance increases, the attraction is reduced rather rapidly near the operating point 705 of the tact switch. This indicates that as the slider progresses, the magnets in the slider portion become larger in magnitude than the magnets in the base portion on the same horizontal line

It can also be confirmed that the size of the arrow shape 710 becomes smaller.

The general switch structure is tension (coil spring, leaf spring, dome, wire tension, rubber elasticity, etc.) structure. This increases the operating force in proportion to the increase in the working distance. However, the magnetic force of the magnet is governed by Coulomb's law, and it decreases sharply as the working distance increases. Graph 706 shows that the magnetic force is inversely proportional to the square of the distance between the two magnets.

Referring to FIG. 25, it can be seen from the two resultant graphs 711 that the operating force profile 708 has little influence even though the double magnet and the bearing structure are introduced to prevent the fine deflection phenomenon. In the double magnet and steel ball structure using the Coulomb's law, magnetic force is set in the center of the slider positively as the magnetic force increases in the region where the fine deflection phenomenon occurs. When the magnetic force deviates from the fine deflection region, Do not make information dull.

Fig. 26 shows a graph when a spring is applied and a double magnet and a steel ball are applied to prevent micro-sagging of the slider portion. Referring to FIG. 26, when the spring is applied to prevent micro sagging, the curved line has a small initial operating force 724 and a large initial deflection, while the lower curved line 725 has an excellent initial operating force 726, And the operation select feel 723 is maintained in a very large state.

27 shows a four-ground combination slide input device having a double magnet and a steel ball.

Referring to FIG. 27, how the dual magnets and steel balls affect the processing of horizontal and vertical input signals will be described.

27, a circular magnet 731 included in the slider portion 730 that always moves in the horizontal direction by the frame 732, a steel ball 733 for reducing the friction between the slider portion and the base portion,

. The tact switch 734 informs the user of a diagonal direction signal only when moving in the diagonal direction according to the amount of horizontal movement displacement of the slider portion. Here, it is confirmed that the tact switch 734 is connected to the wire to find the amount of displacement. It is also used to reduce the friction between the wire and the slider.

Horizontal bearing 735 is also shown.

In FIG. 28, a step 804 of feeling a tangible feeling in a horizontal direction and a pre-feeling step 800 are shown by dotted lines when a user inputs a certain character. In Fig. 28, the user wants to output BC. Depending on the user, there may be four conditions when you hit B during BC. Here, the user commonly feels the vertical direction tactile sense 801, and the horizontal direction stays in the front stage 800 until the tactile sense is reached. Therefore, since the user B is in the diagonal direction, the user pushes the button until the tactile sense 804 in the diagonal direction is felt on the fingertip.

FIG. 29 shows a method in which a user can input a character without a mistake through a step 810 of sensing a horizontal direction tactile sense. Referring to Figure 29,

It senses the tangency that comes out only in the diagonal direction as determined by the outgoing dotted line portion (810), releases the hand as rain, and outputs the remaining letter C correctly. In the dotted line portion 810, since there are one vertical input signal and two horizontal input signals, B (811) is output without an error due to the calculation, and the character already determined as an output is

The calculation processing is not performed.

Then the user tries to hit C immediately. The horizontal direction can be typed before the vertical direction, and the vertical direction can be entered before the horizontal direction. Therefore, the number of cases doubles. However, you can feel horizontal, vertical, two-way tactile sensation on your fingers,

Since B is correctly output, the following characters are not affected. If you do not feel horizontal tack in the 4-way combination formula, you can output the desired letter C regardless of the horizontal or vertical direction, because the letters in the direction of the north, south, east and west are displayed.

When we examine this problem with respect to the relationship between the finger and the information processing apparatus, it can not be known whether the finger of the human being has pressed the button in the vertical direction, the finger is pressed to the ground, For example, in the case of a dome switch, the working distance is only about 0.15 mm. The tact switch is very small, around 0.5mm. In such a small range, the factor that the finger perceives accurately the pressing of the button is tactful. If you do not know how to do it, you will be aware that it will work, and if you do not get it right in the vertical direction, The possibility of typos is also very high if you can not persuade them. The equation of the four-ground combination formula described above is shown in a diagram.

In this example, the state in which an unstable person's finger is processed by the input processing apparatus is divided into a state in which the double magnet and the steel ball are not applied, and a state in which the finger is applied. Referring to FIG. 30, when there is no double magnet and steel ball, the finger in the fine operation area shows that the incomplete finger of the user can not recognize the horizontal direction tactile sense, and the processing device arbitrarily processes it. That is, the arithmetic processing unit itself determines whether the input horizontal-direction signal and the vertical-direction signal are input signals for any of the characters formed consecutively. However, when the double magnet and the steel ball are applied, since the magnetic force provided for preventing the sagging hardly affects near the maximum operating force, the user receives a clear horizontal direction tactile sense. When the tactile sensation is transmitted, the user is informed in advance of the output before outputting whether the diagonal direction is in the direction of east-west, north-south, or the like, and proceeds to input the next character. If a hunch is delivered, you know that it is being input in a diagonal direction, so you can tell your idea of the progress of the process before it is signaled. In this example, a four-way tandem system is used. However, other systems can have similar effects by introducing a double magnet system and a steel ball system, which hardly affect the operating force when tumbling occurs.

 For example, in the case of the 8-way combination type, the diagonal line is distinguished from the diagonal line by separating the diagonal line from the diagonal lines. In the case of applying the diagonal lines and the double magnet type, the unique tactile sense can be obtained. You can get it with your finger. 8 Before studying the effects of double magnets and steel balls in a tandem system, consider the princess distance concept.

31 shows an eight-wire in-line device. In the four-ground combination type device, unlike the case where one tact switch provided slide restoring force in eight directions, in this example, one tact switch 840 corresponding to eight directions corresponds to the restoring force, . In one example, it can be seen that the trigger 844 for actuating the tact switches in each direction is included in the slider 845.

Referring to FIG. 31, a base 846 including eight tact switches and a trigger 844 for operating the tact switch 840 in the direction of the frame 844 and the base 844, And a slider including a slider.

Fig. 32 shows an operating mode of an eight-wire in-line system without a princess distance.

Referring to FIG. 32, when the base and the slider are exactly aligned on the frame, the minimum assembly tolerance required for each direction of a1 (870) when aligned with the base after being combined with the base in FIG. Assuming here that the value of a1 is 0.1mm, when the slider is moved to the east in this state, the tact switch in the northeast will have a value of b1 (874). Not only the tact switch 872 in the east direction but also the surrounding tact switches 871 and 873 are operated by the value of b1. Therefore, when the space between the tact switch and the trigger is small in the case of the 8-way tandem type, it is understood that not only the tact switch in the desired direction, but also the tact switch in the surrounding direction are depressed. This situation can be signaled correctly. When the tact switch adjacent to the east is pushed down, it is possible to process only the middle signal among the three operation signals at all times. However, as mentioned above, since three tact switches are pressed at the same time rather than a signal problem, the operation force is very high, and the operation profiles of the three tact switches are superimposed so that the user can judge the progress of the signal in the slide direction with a finger It is impossible to do.

Fig. 33 shows an operation mode of an 8-ground in-line system with a princess distance.

Referring to FIG. 33, it can be seen that the dimension of d1 (880) is changed to a smaller size. Reducing the size of the trigger creates a free space (885) in the trigger and surrounding tact switches. If you slide the slider to the right in this state, you can see that only one tact switch (887) in the forward direction of the eight tact switches is activated. Referring to FIG. 34, in a general 8-way tandem system, if the total working distance 890 in an 8-way system is divided into free stroke, buffer stroke and operating stroke, the free stroke means that the product basically moves around other tact switches Without seeing it, you can see it as a princess distance to operate only tact in the desired direction, and if you include this princess distance, you can get the total distance in one direction in 8-wire tandem system.

 If you do not have a princess distance as in the previous example, the tact switch will move the tact in the other direction simultaneously. Therefore, in the case of an eight-way system, such a princess distance is inevitably applied. Here princess distance is the area where no force is applied. This is because, in the case of the slide input device, after the operating force for operating the switch is generated, the slider structure or the trigger is operated by the return force, which is a section for sorting to operate the desired one. Can not be performed.

Referring to FIG. 34, since the actuating force of the tact is insufficient in the prime region, a fine sagging phenomenon occurs. In this case, the fine sagging phenomenon is not only when the remote control is erected, but also when the slider is not correctly returned due to frictional force or the like after finishing the final character input even when the remote controller is operated, . Therefore, simply increasing the operating force of the tact switch along the direction can not exert any effect on the fine sagging phenomenon. Fig. 35 shows an operation method in an 8-ground serial system in which a princess distance is secured.

Referring to FIG. 35, after a gap of 0.3 mm is secured, only one button in each direction is depressed when moving in eight directions, east, west, south, north, northwest (901), northeast, southwest, . The gap of 0.3 shown in FIG. 35 is calculated as a gap for preventing the tact switch in the moving direction when the trigger is moved in the input direction, and the tact switch in the adjacent direction from being operated. Here, the trigger can be repositioned in the prime region generated by such eight-directional gaps.

FIG. 36 shows the occurrence of a misfit in a character input due to a fine deflection phenomenon due to a princess area in an 8-directional system. The user tries to enter the letter B in the northwest. However, if the trigger is currently off center, tilted west and touching the actuator 910 of the western tact switch, when the user does not know this information and starts to slide in the diagonal direction 912, And the north-west switch operate simultaneously. In this case, the operation will not know whether the user intended the letter A or the letter B intended. Therefore, the possibility of occurrence of typos increases.

In this example, the 8-way tandem system can not recognize the operation force of the dome instantaneously as the user pushes the slider with the finger like a vertical input signal at a small input distance due to the free stroke interval . These princess distances are relatively small when the total working distance of the princess distance and the working distance is increased, but the total working distance is very small due to the horizontal limit operating distance. For example, if the horizontal limit operating distance is set to 1.0 mm, the free stroke reaches about 0.45 mm, resulting in a princessing distance equal to half of the total working distance. First, when the double magnet and the steel ball structure are not applied, the dome which is responsible for the vertical input at the fingertip is not refreshed as the slide input is progressing in the head of the person. Therefore, it is determined that the force should be increased a little more. However, in the case of the horizontal input, the slider determined to be located at the center is located at the west limit line 930 of the princess street area. As soon as the north-west input starts, the tact switch at the west is immediately pressed to write the letter A The possibility becomes high.

38 shows an example in which a double magnet and a steel ball structure are applied to an existing eight-way system. 38, the slider portion includes four magnets 920. [ Further, the base 921 fixed to the outer case includes four magnets respectively corresponding to the four magnets of the slider portion. Four steel balls are inserted therebetween. When a double magnet and a steel ball are applied, the slider is always positioned at the center of the base when there is no external force. Therefore,

So that the error does not occur. In addition, when a double magnet and a steel ball structure are applied, a process of receiving a feed back of the dome is displayed in the head of a person while actively increasing the force of the fingertip as the slide input proceeds. At the same time, in the case of the horizontal direction, the slider starts from the center and outputs B, which is the user's intended letter, as it thinks.

8 Grounding One of the main causes of error in inputting characters in a tandem system is due to the fact that the user does not know the feedback of the character input process through the finger.

 Fig. 39 shows the operating force variation in the vertical direction and the horizontal direction in accordance with the character input operation of the 8-ground tandem type system. The most ideal graph of the horizontal direction operating force is a case in which the operating force gradually increases as the working distance becomes longer as the vertical operating force change graph 941, and then the operating force is lowered after the operation. In this case, the user is able to distinguish between an increasing period 941 and a decreasing interval 942 of whether to give more force to the fingertip or to give the desired signal result no more force. However, when the elastic spring is applied to prevent micro-sagging, the increase period 951 and the decrease period 952 of the operating force can not be clarified. This problem can also be improved with the introduction of double magnets and steel balls as seen in the previous example. Due to the double magnets and steel balls at the princessing distance, the trigger can always be positioned in the center, thereby leaving the same distance in the actuation switch in each direction. Further, when the elastic spring is applied, the user can not know the position of the slider when entering the operating region in the prime region due to the change of the fine spring operating force 943. However, in the structure of the double magnet and the steel ball, (944), it is possible to know the process of entering the operation area with the fingertip. Therefore, the user can improve the character input misalignment phenomenon by the force of the magnetic force in the range of the princess distance and the change of the switch operating force in the range other than the tool distance without considering the change of the entire working distance according to the change of the princess distance . 8 Final actuation force when double magnet and steel ball are applied in a grounded tandem system

Referring to the graph 957, it can be seen that the increasing period 955 and the decreasing period 956 of the operating force remain the same as when the double magnet and the steel ball are not applied.

In the case of a vertical input direction, such a keypad resistance force may be added to the operating force in the vertical input direction. For example, if a vertical input switch of 210gf is added to the resistive force of 80g of the keypad of a rubber keypad and a force of 290gf is generated when a total of one button is pressed vertically, There is no pressure on the fingers because it is. However, for horizontal input, there should be no rubber keypad and no resistance. Due to the nature of the horizontal input, it must be sensitive to small forces, tactile, and give that information, so if there is a resistance of the keypad, it becomes a fatal flaw in the input of slides. Such resistance includes the friction between the slider portion and the base portion at the time of slide input. Frictional forces at the vertical input are not considered. In the case of a PK TYPE (Plastic Key), even if a small gap of about 0.1 mm is secured between the PK TYPE keypad and the case or the plastic button, since the button moves in a direction perpendicular to this gap, Because. However, since the slider assemblies equipped with a plurality of circuits including the vertical input button are all moved together in the horizontal input, the frictional force in the horizontal direction becomes very important.

As shown in FIG. 40, when there is no steel ball, such a double magnet serves to pull the slider to the base, thereby making the frictional force larger than when there is no double magnet. This creates unintentional resistance. Therefore, steel balls are introduced here. Due to the rolling of the steel ball, the friction force in the vertical direction is eliminated. It is clear that the steel ball can be replaced with a ball made of other materials such as a ceramic ball in order to maximize the effect of the magnetic force along the distance. In this case, it is possible to faithfully carry out the task of setting up a simple rib around the ceramic sphere so that the ceramic sphere does not deviate to another place, and eliminates the vertical friction force.

In FIG. 40, the magnet 952 of the slider portion is attracted to each other by the magnet 951 and the attraction force 952 of the base portion. As a result of this pulling force, when the slider is pushed horizontally, a large frictional force acts. If a touch LCD or physical key button is actually added here, this friction becomes larger when the slider moves horizontally.

41 shows a state in which a bush 961 is inserted between the slider portion and the base for reducing frictional force. Here, the reason for inserting the bushes is to reduce the frictional force between the slider and the base when the slider moves horizontally. 42 shows an example of a bush used in a slider type mobile phone. This bushing 972 at the time of disconnection of the slider portion reduces the frictional force of the operating hinge 973 itself. Also, it protects the hinge itself from abrasion even when opening (970) or closing (971). Referring to FIG. 43, there is shown a picture of a very smooth surface 980 between the upper surface of the bushing and the slider, and the like 981. As shown in the figure, when the surface is rough, it is obvious that the frictional force is larger than the smooth surface. Here, if the bushing is smooth, look at the frictional force. However, even when the surface of the bushing is smooth, the friction force becomes large due to the micro-slip phenomenon. Even if the surface of the actual bushing and the surface of the slider corresponding to the bushing are smoothly polished, irregular repetition of low-speed slip and high-speed slip is caused according to the surface irregularities of the corresponding portions. FIG. 44 shows the case where such micro-slip occurs. Referring to FIG. 44, this micro slip causes the tactile sensation 990 to become unclear. However, if the steel structure enters here, this frictional force is canceled by the rotation of the steel ball. 45, the friction force is replaced by the rolling resistance of the steel ball even at the increase of the vertical force 995, so that the horizontal friction force 996 does not increase.

Fig. 46 shows a graph of horizontal friction force 1000 due to such rolling resistance. If we look at the reason for the frictional tolerance here, we know that there are three direct causes for the frictional tolerance. The surface roughness 1010 of the slider, the roughness 1011 of the steel ball, and the roughness 1012 of the base. Due to these factors, friction tolerance appears. However, since this frictional force tolerance is almost equal to the minimum resistance (1013) felt by an actual person (1014), this frictional force is not felt at the fingertip. In addition, even if an excessive force of the finger force is added, the strength of the frictional force does not change and does not affect the tolerance of the frictional force.

 In Fig. 47, the magnet of the slider portion is removed to form a single magnet structure

The operating force graph is shown. In this case, the force 1060 of the magnet according to Coulomb's law can not be used, and the slider portion 1061 can not prevent the fine sagging phenomenon at all. However, due to the steel balls, the frictional tolerances are the same as when the double magnets and steel balls were applied.

In Fig. 48, in order to further reduce the frictional tolerance of the steel ball in the four-ground combination type system, in addition to the magnet 1016, the steel ball 1019, and the frame 1015 for horizontal movement of the slider, the ground plane of the slider and the ground plane of the base And the spans 1017 and 1018 are inserted.

Referring to FIG. 49, gold plating is performed to add a signal transmission function to a steel ball between double magnets. Of course, in addition to gold plating, the bearing itself can be made of copper or the like to reduce the contact resistance. The copper ball 1021 transmits the vertical input signal to the main PCB 1022 through the plating pad 1020 at the back of the keypad PCB. In Figure 49, the keypad PCB backside 1020 is gold plated to facilitate signal transmission to the copper ball. In addition, the front face of the main PCB, which is in contact with the steel ball, is also gold-plated, so that the vertical signal of the keypad PCB can be directly transmitted to the main PCB without connecting lines such as FPC. This can simplify the work process.

 50 shows a state in which the three-dimensional keypad module 1030 is loaded in the tray 1031. FIG. Since the slider portion of the three-dimensional keypad must be free to move, it is impossible to fix the screw, double-sided tape or the like completely like other products. Therefore, there is a danger that the slider portion may be dislocated or misalignment of components may occur while moving from the mass production line to the sub-assy state. Also, the bearing 1034 of the slider portion 1033, the tact switch 1035, and the like can escape through a small impact during the movement. Using a double magnet and a steel ball, it is possible to attach and detach the slider to the base part with a small finger force, and it is possible to store it in a train in a line and easily move it to another work place. However, it is obvious that not only the line work but also other parts can easily apply the advantages of this double magnet fastening.

Fig. 51 shows a case in which a double magnet and a steel ball are introduced for accurate mouse motion control. Referring to FIG. 51, mouse control is possible at a total of eight speeds.

Pressing the 1 key and moving the button slightly to the north (1043) will move the cursor at medium and slow speed. Press button 1 and move the button to the north (1043). Pressing the 2 button and moving the button slightly to the north (1043) will move the cursor at high speed and slow speed. Move the cursor to the north (1043) by pressing the 2 button and move the cursor at high speed. Pressing the 3 button and moving the button slightly to the north (1043) moves the cursor at a slower speed. Move the cursor to the north (1043) by pressing the 3 button. The cursor moves at a low speed.

If the user does not move the third button but clicks the vertical input, the left button function (1040) of the conventional mouse 1042 is realized. When the user presses the 4th button and clicks the button without moving the mouse, only the right mouse button (1041) of the common mouse is implemented.

FIG. 52 shows a four-ground-combined-type input device in which two terminals are arranged in the directions of north, south, south and north respectively. Referring to FIG. 52, it can be seen that the number of terminals in the north direction 1052 is two at low speed 1055 and two at high speed 1056, respectively. Make sure that the signal changes when there is a horizontally different gap (1053, 1054) between the terminals so that they are pressed and pressed firmly. Although two terminals are used here, it is obvious that the movement control of the mouse cursor and the character processing can be finer in accordance with the number of terminals and the gap value that are opposed to each direction. In the present invention, a simple magnet is mounted on the slider portion and the base portion, respectively, and a steel ball is disposed between the slider portion and the base portion, thereby preventing fine deflection and thereby performing accurate character input. By applying the embodiments of the present invention, the size of the input device can be easily reduced, the assembly process can be simplified, and the manufacturing cost can be reduced. Also, since the properties of attracting magnets are always available without additional power consumption, there is an advantage of minimizing power consumption in IT devices, where battery usage becomes increasingly important, such as remote control, mobile phones, and smart phones.

 Embodiments of the present invention can also be replaced by other materials that can replace the properties of the double magnets. When the embodiments of the present invention replace the magnet of the slider portion with a material such as iron which can attract the magnet of the base portion or replace the magnet of the base portion with a material such as iron which can attract the magnet of the slider portion , Manufacturing

Cost reduction is possible.

 The slide input device having the double magnet and the steel ball may include all kinds of input devices. For example, it is possible to input texts for Internet browsing and mail writing on an Internet-enabled TV, a keypad for a remote control, a keypad for a smart phone capable of transmitting text messages such as SNS, and a keypad for a tablet PC for document creation and mouse control.

 In addition, since the double magnet and steel ball can be precisely controlled, it can be utilized as a keypad specialized for home games.

As described above, according to the present invention, by utilizing the fact that the magnetic force varies with the distance between two magnetic force generating objects, the magnetic force is weakened at the time of actual operation and the influence of the entire operating force curve can be minimized, The user can transmit clear tactile sensation to the fingertip, thereby enabling precise slide input without malfunctioning at all times.

 In addition, when the slide module itself is carried on the assembly line or when the remote controller is turned upside down or the like is not operated, the magnetic force between the two magnets or two magnetic force generating objects is maximized, Problems such as assembly and loss of components such as horizontal bearings can be drastically improved.

In addition, it is possible not only to use a complicated shape such as a coil spring or a leaf spring but also to use a magnet and a steel ball of a simple shape to prevent micro-sagging, so that a single module of the slide device can be miniaturized and reduced in weight.

 Furthermore, it is to be understood that various embodiments in accordance with the present invention may solve many technical problems in the art, as well as those described in the related art.

The present invention has been described with reference to the embodiments. It will be apparent, however, to one skilled in the art, that the present invention may be embodied in various other forms without departing from the spirit or essential characteristics thereof. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. That is, the true technical scope of the present invention is indicated in the appended claims, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

101: East slide input direction
102: Vertical input button
103: dome for vertical input
104: Tact switch
107: vertical input shaft
108: One of the horizontal input shafts, the x-axis
109: One of the horizontal input shafts, the y-axis
110: Button for both horizontal and vertical axis input
120: dome for vertical input
121: fpc cable for transmitting a signal related to vertical input information to the information processing apparatus
125: Physical key for facilitating vertical input
126: Vertical input of the physical key and for making 8-way signal of base part
A circuit board comprising a GND terminal for generating a basic direction signal for north, south, east and west.
127: Metal dome and silicon projection for vertical input
130: a slider part including a GND terminal
131: The state in which the slider portion is deflected
132: deflection of the slider portion
133: sectional shape of the slider
134: Cross-sectional shape of the slider when deflection occurs
135: Cross-sectional shape showing deflection
136: Actuation force of tact switch to prevent large deflection of slider
137: Operating force of tact switch to prevent large slack of slider
140: Remote control with character input
141: Vertical misalignment
142: Horizontal misalignment
149: Single piece shape of lift prevention cushion applied to mass production keypad
150: a mobile phone including a conventional unidirectional keypad
151: Vertical pressing force
152: vertical direction input to the corresponding physical key
153: Vertical working stroke
155: A key to prevent the keypad from moving upwards
156: Return of the dome
160: Suspension preventing structure applied to mass-production keypad
161: Deflection in the horizontal direction
162: Deflection in the horizontal direction
171: Etching to avoid confusion between the slide button and the case
172: uniform hole of etching
201: vertical direction input and horizontal direction input corresponding physical key
202: pad for signal generation for dome operation in circuit PCB
203: Circuit PCB
204: edge of the slider
205: Steel ball introduced to eliminate frictional force
210: 4: Slider part of the grounded tandem structure
211: Horizontal partial operation switch
212: 4 frame of grounded tandem structure
213: 4 Base of series grounded structure
220: 4 Grounding-type physical button
221: Northwest input direction
222: Character assigned to north-west input direction
223: Circuit board for taking the vertical input direction signal
224: Pads for vertical input on circuit board
321: incision direction for viewing section
322: a slider part of the 4-series in-line type input device
323: West operating switch
324: North operating switch
320: Improve section
326: South operating switch
325: East operating switch
330: Slider before moving
331: After moving the slider part
341: Base
342: Steel ball
343: Slider
344: Movement of the slider relative to the steel ball when there is no slip loss of the steel ball itself
345: Movement of the base relative to the steel ball when there is no slip loss of the steel ball itself
346: Slider iron plate pin with no magnetic force
347: Iron plate pin of base part without magnetic force
348: Frame
380: Operating force graph on slide input device
381: Return force graph from slide input device
382: section where fine deflection occurs
383: Maximum operating point
384: Force of operating force in the fine deflection section
385: Maximum operating force point strength
386: Point at which the operating force is suddenly reduced to the minimum operating force after the maximum operating force
390: external pressing force
391: Power to be restored
392: Dome switch with urethane projection
393: Force corresponding to external pressing force
480: expected deflection
481: actual deflection
482: Operating force curve
483: Return force curve
485: Maximum operating force
484: Minimum operating force point after maximum operating force
500: 4 touch LCD module applied to grounded combination slide input device
501: Slider portion of the grounding-type slide input device
502: 1st key area of the touch LCD part
503: Magnetic of LCD slider part
504: Steel ball
510: spring introduced to prevent fine deflection
540: operating force curve
544: Maximum operating point
545: Minimum operating point after maximum operating point
546: Linear graph of spring
547: Spring operating force at maximum operating force point of tact switch
548: Spring operating force at minimum operating force point after maximum operating force of tact switch
549: Combined tact switch operating force curve and spring operating force graph
563: Maximum operating force in tact switch operating force curve
564: Minimum operating force after tact switch operating force
580: magnet of the slider part
581: Magnet in base portion
582: Steel ball located between the slider part and the base part
583: Operation switch
600: East Terminal signal
601: South terminal signal
603: 4 Spring mounted to prevent micro-sag in combination with grounding structure
610: Character input intention group arbitrarily judged in the vertical and horizontal information processing apparatus
611: When inputting characters and other typos
612: Characters assigned to the northwest
613: North slide direction
622: Slider after operation
623: Base portion
621: magnet of the base part
620: magnet of the slider part
624: Frame
705: Minimum operating point after maximum operating point of tact switch
710: Arrow indicating magnitude of magnetic force
711: Tact switch operating force and magnetic force of double magnet and steel ball
Graph showing the result for
723: Working Tactics
724: Initial work force in the area of micro-deflection when spring is applied
726: Initial work force in the region of fine deflection when double magnet and steel ball are applied
730:
731: Circular magnet of the slider part
732: Frame
733: Steel ball
734: Tact switch
800: Feeling the sense of horizontal direction
801: Dome responsible for vertical input
802: Tact switch
803: arrow indicating north-west direction
804: Steps to feel horizontal tangible feeling
810: Limit line in the horizontal direction
811: input information for outputting the intended B value
840: Tact switch in each horizontal direction
844: 8 Trigger on grounded tandem structure
845: Slider
846: Base
847: Frame
870: for the assembly between the base part and the slider part
Minimum assembly tolerance
871: NORTH OPERATION SWITCH
872: East operating switch
873: Southeast operating switch
875: Outermost part of the trigger
880: Dimensions of trigger
885: Clearance between trigger and tact switch
886: Northeast tact switch
887: East tact switch
888: South east tact switch
890: Total working distance
889: Princess Street
891: Operation tact switch
900: Only one operated western operating switch
901: Operational switch on only one north-west
910: Operation switch in the west with touching the trigger
911: Operated western direction operating switch
912: Northwest input direction
920: In an 8-way tandem system,
Applied magnets
921: In an 8-way in-line system,
930: West Princess Distance Limit Area
941: In the operating force graph in the vertical input direction,
942: Operating force reduction section in the operating force graph in the vertical input direction
943: Spring resilient operating force in the fine deflection section
944: Ultimate operating force curve deformed due to greatly reduced magnetic force
950: magnet of the slider part
951: magnet of the base part
952: Size of manpower due to double magnet
955: Increasing operating force of the final operating force curve in a system with double magnet and steel ball
956: Decreasing the operating force of the final operating force curve in a system with double magnets and steel balls
960: Physical Button
961: Bush introduced for friction reduction
970: Hinge section in the open state
971: Hinge section in the closed state
973: Hinge section
972: Bushing applied to the hinge
980: Bushing with smooth surface
981: Bushing with rough surface
990: Final operating force curve by micro-slip
995: Vertical input force pressing button
996: Movement direction of the slider part and steel ball
1000: Horizontal friction force
1010: Surface roughness
1011: Steel construction drawing
1012: Base illuminance
1013: Minimum resistance due to ball rolling resistance
1014: Ideal graph for minimum resistance (straight line)
1016: magnet of the slider part
1017: SUS series thin film plate applied to the slider part
1018: SUS type thin film plate applied to the base part
1019: Steel ball
1020: Gold plated area applied to the back of KEYPAD PCB
1021: Copper ball which doubles as signal transmission function
1022: Gold plated area applied to the front of MAIN PCB
1030: 4 Ground Combination Type Three-Dimensional Keypad Single Module Assy
1031:
1033: Slider part
1034: Bearings
1035: Tact switch
1040: Left mouse button
1041: Right mouse button
1042: Mouse
1043: North input direction
1051: 4 steel ball applied to grounded combination input device
1052: North horizontal input direction
1053: Narrow gap between GND and terminal
1054: Wide gap between GND and terminal
1055: Low Speed Terminal
1056: Express Terminal
1061: Slider part
1060: Magnetic force change between double magnets according to Coulomb's law
1080: GND terminal mounted on the slider

Claims (7)

An input system for inputting a user's operation command in accordance with a moving direction,
A slider including a circuit board on which four or more vertical direction signals can be input and one or more magnets;
A frame supporting the slider so that the slider always moves parallel to the base;
A base including a magnet to allow the slider to return to its original position always relative to the base after actuation of the manipulation command;
And a vertical steel ball located between the magnet of the slider and the magnet of the base to reduce the friction force generated when the slider is moved in parallel with the parallel movement of the slider.
The method according to claim 1,
Wherein the magnets of the slider and the magnets of the base are coplanar
Input system.
The method according to claim 1,
And four direction switches disposed at four places in east, west, south, and north which operate according to the displacement amount of the slider moved in parallel with respect to the parallel movement of the slider.
The method according to claim 1,
The directional switch further comprises four operating switches corresponding to north-west, north-east, south-west, and southeast directions in addition to east, west, south and north.
The method according to claim 1,
Wherein the magnet of the slider portion includes another material capable of generating a pulling force corresponding to the magnetic force of the base.
The method according to claim 1,
Wherein the magnet of the base portion comprises another material capable of generating a pulling force corresponding to the magnetic force of the base.
The method according to claim 1,
Wherein the circuit board of the slider unit is an LCD including a touch input method.

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