KR100747860B1 - directional key Assembly having encoder switch and contact switch - Google Patents

Abstract

According to a structure in which an encoder switch and a contact type tact switch of a rotary structure are interlocked, the present invention can prevent abnormal operation of the slide mobile communication terminal when the switch is used, and has a multi-direction having an encoder switch and a tact switch that can be installed in a small area. Provide a key assembly.

The present invention, the encoder switch of the up and down rotation type disposed on one side of the printed circuit board; A rod-shaped button dual rotary shaft coupled to the encoder switch freely and rotatably, the portion of which is exposed to the coupling portion of the case; A tact switch disposed on the printed circuit board to generate a selection signal by pressing the rotary shaft; The rotary shaft has a diameter and the driving portion wrinkles formed on the outer periphery; A driven part which is protruded to coincide with the shaft center at one side of the driving part, and which is rotatable at the inner shaft coupling part of the encoder switch, but is coupled so as not to be detached from the coupling position even in the operation of the rotation and the push; And a push part protruding from the other side of the driving unit so that the shaft centers are coincident with each other, and spaced apart from the vertical contact point of the tact switch. An encoder switch and a tact for outputting a pulse value corresponding to the number of rotation steps in the rotary shaft located above and between the encoder switch and the tact switch, and a selection signal corresponding to the contact between the rotary shaft and the tact switch. A multidirectional key assembly with a switch is provided.

Slide, Mobile Terminal, Encoder, Tact, Switch, Rotation

Description

Directional key Assembly having encoder switch and contact switch}

1 is a block diagram of a slide up / down button of a mobile communication terminal according to the prior art;

2 is a plan view for explaining a multi-directional key assembly having an encoder switch and a tact switch according to an embodiment of the present invention;

3 is a cross-sectional view of a portion of the encoder switch of the multi-directional key assembly of the present invention shown in FIG.

4 is a right side view of the multi-directional key assembly of the present invention shown in FIG.

5 and 6 are a plan view and a sectional view for explaining the installation relationship of the multi-directional key assembly of the present invention shown in FIG.

* Explanation of symbols for main parts of drawings *

10: encoder switch 20: rotary shaft

30: tact switch 40: PCB

50 case 51: coupling part

The present invention relates to a multi-directional assembly having an encoder switch and a tact switch. More particularly, the present invention relates to an encoder switch and a general tact corresponding to a switch of up and down rotation in a relatively small area of a slide type mobile communication terminal. A multi-directional key assembly having an encoder switch and a tact switch incorporating a switch).

In general, the slide mobile communication terminal is a method of performing the opening and closing operation by sliding the cover relative to the main body, and has a front housing corresponding to the cover and a rear housing corresponding to the main body.

Here, the front housing can be equipped with components such as a liquid crystal display, a navigation button (Navi-button), a function key, a speaker and the like by the combination of the front upper case (front upper) and the front lower case (front lower) The rear housing can be equipped with a component such as a main circuit, a microphone, an antenna, a battery, and the like by combining a back upper case and a back lower case.

These slide mobile communication terminals are increasingly smaller and smaller in accordance with the trend of miniaturization, compactness, and multifunctionality, require efficient space layout and switch structure, and provide various menus for multifunction performance. For this reason, an easier switch structure is required.

In particular, the navigation buttons require five direction buttons: up, down, left, right, and choice. For this purpose, the area required when using a general metal dome switch or tact switch is set to the width of the mobile terminal set. In the vertical direction, the space installation area efficiency is very low, and it is difficult to design a compact mobile communication terminal.

A slide up / down button of a mobile communication terminal according to the related art is a keypad provided with various menu keys, function keys, and number keys on the front of the mobile communication terminal 1 by using a general contact switch. (1a) and a slide / push button (3) mounted on the outer surface to operate as a slide and a push.

The slide / push button 3 is a multi-directional operation consisting of an up / down direction for selecting a menu while moving up and down in a slide operation, and a push direction for confirming by pressing a menu selected by the up / down direction. It consists of a button. The slide / push button 3 of the prior art is composed of slide up / down contact switches 3a and 3b for operating the contact by pushing in the up / down direction, and the contact is made by pressing the slide / push button 3. The push contact switch 3c is formed.

However, the slide up / down buttons according to the prior art can be used only for a mobile communication terminal in which there is no movement of the main body itself, such as a bar, a flip, and a folder type, and the following problems are pointed out when applied to the slide mobile communication terminal. It is becoming.

In other words, in order to reduce the size of the longitudinal direction in the slide mobile communication terminal, when the integrated multi-directional switch having the up / down slide and the push (selection) function as mentioned in the related art is used, the size of the longitudinal direction is reduced by reducing the area. Although it may be helpful to reduce the force, the force used to operate the switch is transmitted to the cover, which causes a slide between the body and the cover, which opens and closes the user's unwanted mobile terminal and moves it up and down. It caused problems such as shaking and caused very inconvenience in use.

That is, since the integrated multi-directional switch had to be pushed up or down over a certain force for the up and down direction of operation, the force pushing the switch acts on the mobile communication terminal, which causes inconvenience in that the mobile communication terminal moves together with the operation of the switch.

Therefore, the present invention for solving the above-mentioned problems can prevent the abnormal operation of the mobile communication terminal when using the switch according to the structure of interlocking the encoder switch and the contact type tact switch of the rotary structure, and can be installed in a small area It is an object to provide a multidirectional key assembly having an encoder switch and a tact switch.

The present invention for achieving the above object, the encoder switch of the up and down rotation type disposed on one side of the printed circuit board; A rod-shaped button dual rotary shaft coupled to the encoder switch freely and rotatably, the portion of which is exposed to the coupling portion of the case; A tact switch disposed on the printed circuit board to generate a selection signal by pressing the rotary shaft; The rotary shaft has a diameter and the driving portion wrinkles formed on the outer periphery; A driven part which is protruded to coincide with the shaft center at one side of the driving part, and which is rotatable at the inner shaft coupling part of the encoder switch, but is coupled so as not to be detached from the coupling position even in the operation of the rotation and the push; And a push part protruding from the other side of the driving unit so that the shaft centers are coincident with each other, and spaced apart from the vertical contact point of the tact switch. An encoder switch and a tact for outputting a pulse value corresponding to the number of rotation steps in the rotary shaft located above and between the encoder switch and the tact switch, and a selection signal corresponding to the contact between the rotary shaft and the tact switch. Technical features exist in multidirectional key assemblies with switches.

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Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a plan view illustrating a multidirectional key assembly having an encoder switch and a tact switch according to an embodiment of the present invention, and FIG. 3 is an encoder switch of the multidirectional key assembly of the present invention shown in FIG. The cross-sectional view of a part cut to explain. 4 is a right side view of the multidirectional key assembly of the present invention shown in FIG. 2, and FIGS. 5 and 6 are a plan view and a sectional view for explaining the installation relationship of the multidirectional key assembly of the present invention shown in FIG. to be.

As shown in Figs. 2 and 3, the multi-directional key assembly having the encoder switch and the tact switch according to the present invention has a coupling structure and an arrangement structure of the encoder switch 10, the rotary shaft 20 and the tact switch 30. It is characterized by.

Here, the rotary shaft 20 has a relatively large diameter in contact with the user's finger, the driving portion 21 is formed in the outer periphery, the axial center is protruded in one side of such a driving unit 21 is the encoder switch ( 10) the driven part 22 is freely rotatable and rotatable at the inner shaft engaging portion of 10) and is coupled so as not to be disengaged from the engaging position even in the movement of the rotation and the push, and the other side of the driving part 21 is projected so that the shaft center is coincident with the tact. The contact point 31 of the switch 30 is composed of a pusher 23 spaced apart from the vertical top.

The pusher 23 may have a circular shape having a relatively larger diameter than the driven part 22 and have a structurally simple configuration even during rotation of the rotary shaft 20 to generate a good contact signal. Do.

In contrast, the driven part 22 of the rotary shaft 20 is coupled to the shaft center of the encoding module 11 of the encoder switch 10.

The encoding module 11 rotates at the same time as the driven part 22 while generating the number of rotation steps, while the push force in which the push part 23 is pressed in the vertical direction of the axis by the user's finger or the like is removed. It has a conventional elastic mechanism means that can be returned to (position).

The encoding module 11 of the encoder switch 10 is an electrical element that detects rotation of the rotary shaft 20 through the driven part 22 and is electrically coupled to an input interface of the main circuit. The encoding module 11 outputs a pulse value corresponding to the number of rotation steps of the rotary shaft 20 and inputs the pulse value to an input interface (not shown) of a printed circuit board, that is, a printed circuit board (PCB) 40. It is configured to.

Here, the input interface transfers the pulse value input from the encoder switch 10 to the mobile processor unit (MPU) of the main circuit. In this case, the MPU of the main circuit checks the rotation speed of the encoder switch 10 with a pulse value.

For example, when the MPU checks the rotation of the driven part 22 of the rotary shaft 20 coupled to the encoder switch 10 and rotates upward, the MPU extends to the PCB 40 according to the number of rotation steps in the upward direction. Reads the corresponding character code (e.g. the code corresponding to the menu selection and scrolling function) stored in the memory (not shown), and if it rotates in the downward direction, reads the other character codes stored in the memory according to the number of rotation steps in the downward direction. You can do it.

In addition, the tact switch 30 is also a general switching device that is electrically connected to the input interface and outputs a contact signal (on / off signal) that the MPU can identify.

The tact switch 30 is circuitally coupled to the line at the installation position of the PCB 40 located vertically below the push portion 23 of the rotary shaft 20. Here, the contact point 31 of the tact switch 30 generates an on / off signal corresponding to the selection signal as the contact point 31 of the tact switch 30 is in contact with and not in contact with the cylindrical push part 23.

In this case, the encoder switch 10 outputs a pulse value corresponding to the number of rotation steps in either of the two lateral directions of the circumference of the rotary shaft 20, and at the same time, the drive unit of the rotary shaft 20 by the user ( When 21 is pushed, the pusher 23 integrally formed in such a drive 21 is brought into contact with the contact point 31 of the tact switch 30 to generate an on / off signal.

Here, the user's finger force is consumed to purely rotate the rotary shaft 20 so as not to cause unwanted movement or shaking of the mobile communication terminal as pointed out in the prior art.

In particular, as shown in Figs. 5 and 6, the rotary shaft 20 is arranged in the lower right side of the front upper case 50, not only can mount the relatively wide liquid crystal display 52, It is possible to help secure the installation position of the speaker, other components 53, and the like.

Particularly, the engaging portion 51 of the front upper case 50 forms a mounting hole 56 so that only a part of the driving portion 21 of the rotary shaft 20 is exposed to the outside, and has a 1/4 spherical shape on one side and the other side thereof. It is preferable to form the projections 54 and 55.

In addition, since the key-only PCB 40 is fixed to the injection molding formed inside the front upper case 50, it is possible to provide a stable support force to the rotary shaft 20.

Since the multi-directional key assembly having the encoder switch and the tact switch of the present invention requires a relatively small installation area compared to the prior art, it is possible to reduce the longitudinal direction of the case of the mobile communication terminal, The operation can be prevented in advance.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

In the present invention configured as described above, by using an encoder switch of a type that rotates in one direction up and down on one side and a tact switch on the other side, the two switches are connected to each other by a rotary button-shaped rotary shaft that is rotatable. The direction function enables the rotary shaft to rotate, and the selection function pushes the rotary shaft to operate, thereby preventing unwanted movement of the mobile communication terminal or shaking up and down in the conventional slide direction. It is possible to provide a multi-directional key assembly having an encoder switch and a tact switch, which can eliminate the inconvenience in use.

In addition, since the multi-directional key assembly having the encoder switch and the tact switch of the present invention uses only a relatively narrow installation area, the space installation area efficiency is very good, and the compact mobile communication terminal can be designed. It has an effect.

Claims (3)

An encoder switch of up and down rotation type disposed on one side of a printed circuit board of the case; A rod-shaped button dual rotary shaft coupled to the encoder switch freely and rotatably, the portion of which is exposed to the coupling portion of the case; A tact switch disposed on the printed circuit board to generate a selection signal by pressing the rotary shaft; The rotary shaft has a diameter and the driving portion wrinkles formed on the outer periphery; A driven part which is protruded to coincide with the shaft center at one side of the driving part, and which is rotatable at the inner shaft coupling part of the encoder switch, but is coupled so as not to be detached from the coupling position even in the operation of the rotation and the push; And A push part which is protrudingly aligned on the other side of the driving unit and spaced apart from an upper portion of the contact point vertically of the tact switch; And outputs a pulse value corresponding to the number of rotation steps in the rotary shaft disposed between the encoder switch and the tact switch, and a selection signal corresponding to the contact between the rotary shaft and the tact switch. Multi-directional key assembly with encoder switch and tact switch. delete The method of claim 1, The coupling part of the case has a multi-directional key assembly having an encoder switch and a tact switch forming a mounting hole so that only a part of the driving part of the rotary shaft is exposed to the outside, and forming a quarter spherical protrusion on one side and the other side of the mounting hole. .

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