KR100652674B1 - Key pad with key interlocking prevention function and portable terminal having the same - Google Patents

Abstract

The present invention relates to a keypad having a key interlocking prevention function and a portable terminal having the same, comprising: a pad body and a plurality of keys formed to protrude along the thickness direction of the pad body; It provides a keypad having a key interlocking prevention function including a plurality of slits that are formed through the adjacent keys among a plurality of keys of the pad body to prevent other keys from interlocking when one of the adjacent keys is operated. .

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Description

Keypad with key interlock prevention function and portable terminal equipped with it{KEY PAD WITH KEY INTERLOCKING PREVENTION FUNCTION AND PORTABLE TERMINAL HAVING THE SAME}

1 is a perspective view showing the structure of a conventional portable terminal.

Fig. 2 is a sectional view taken along line II-II in Fig. 1;

Figure 3 is a perspective view showing the structure of a keypad of a conventional portable terminal.

4 is an exploded perspective view showing a structure of a portable terminal to which a keypad having a key interlocking prevention function according to the present invention is applied.

Figure 5 is a perspective view showing the main portion of Figure 4;

Figure 6 is a perspective view showing the operating structure of the keypad with a key interlock prevention function according to the present invention.

7 is an exploded perspective view showing another embodiment of a keypad with a key interlock prevention function according to the present invention.

8 is a cross-sectional view showing a structure in which the keypad of FIG. 7 is combined.

9 is a perspective view showing a modification of the slit as a keypad having a key interlocking prevention function according to the present invention.

<Explanation of reference numerals for main parts of drawings>

111: folder 121: main body

131: Board 133: Push operation switch

141: Keypad 142: Pad body

142a: movable pad 142b: connecting pad

143,143': Key 144: Pressing projection

145: slit 146: accommodation space forming unit

147: accommodation space 150: frame

151: through hole

The present invention relates to a keypad, and more specifically, when operating any one key on the keypad, it is possible to prevent other keys from being interlocked, and to prevent a malfunction due to interlocking of keys, a key that can improve reliability. The present invention relates to a keypad having an interlocking prevention function and a portable terminal having the same.

1 is a perspective view showing the structure of a conventional portable terminal, FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1, and FIG. 3 is a perspective view showing the structure of a keypad of the conventional portable terminal.

As shown in the figure, a conventional portable terminal is composed of a folder 11 and a body 21 that are rotatably coupled to each other.

A movable hinge portion 13 is formed on one side of the folder 11 so as to be rotatably coupled to the main body 21, and a display portion 15 is provided on the inner surface to output predetermined visual information. have.

The main body 21 includes a case 23 forming a predetermined accommodation space therein, a substrate 31 accommodated inside the case 23, and a plurality of keys 43 for inputting a signal. It is provided with a keypad 41 accommodated on the upper side of the inner substrate 31 of the case 23.

In addition, a fixed hinge portion 26 is formed on one side of the case 23 so that the movable hinge portion 13 of the folder 11 can be relatively rotated, and the battery 28 is detachable on the back side. Combined.

On the other hand, the case 23 is composed of a front cover 24 and a rear case 29 that are in contact with each other in the thickness direction so that an accommodation space is formed therein, and the front cover 24 includes a keypad ( A plurality of keyholes 25 penetrating the plate surface are formed so that the key 43 of 41) can be exposed to the outside.

The upper surface of the substrate 31 is provided with a plurality of so-called metal dome switches 33 capable of elastically deforming along the thickness direction so that they can be turned on/off during a pressing operation, and a light emitting element 35 for illumination. The keypad 41 is disposed between the substrate 31 and the front cover 24 in which a plurality of keys 43 are formed to correspond to the respective push operation switches 33.

The keypad 41 is formed of a rubber or urethane material The pad body 42 disposed on the upper surface of the substrate 31, and formed to protrude along the thickness direction at a position corresponding to each push operation switch 33 so that it can be inserted into the key hole 25 to enable pressing operation. It is provided with a plurality of keys 43, and the bottom surface of the pad body 42 protrudes downward along the thickness direction so that the force pressing each key 43 can be effectively transmitted to each pressing operation switch 33. A plurality of pressing projections 44 are formed respectively.

However, in the conventional portable terminal, when pressing any one of the keys 43 of the keypad 41, a problem occurs that other keys in the vicinity are interlocked and malfunction regardless of the user's intention.

That is, in the case of the conventional keypad 41, there is a limitation in forming the gap between the keys 43 within a limited space to be wider than a certain level, so that the keys 43 are arranged close together, and furthermore, each key The (43) was formed in a structure that is integrally connected to the pad body (42). When one key (43) is operated, a problem occurs in which other keys in the vicinity are interlocked and malfunction.

Particularly, in the case of a keypad provided with keys having various additional functions, that is, more keys are disposed very close to each other, reliability is deteriorated such that key input is not accurately performed when other keys are interlocked during key operation. There was a problem.

As the malfunction of the key occurs, the set value of the portable terminal to be set by the user is changed, and thus, the user has a problem in that it is cumbersome and time wasted in resetting the desired value.

 Therefore, the present invention has been devised to solve the above problems, and can prevent other keys from being interlocked when the operation of any one key on the keypad, and prevents malfunction by interlocking the keys, thereby improving reliability. An object of the present invention is to provide a keypad having a key interlocking prevention function and a portable terminal having the same.

The present invention for achieving the above object, the pad body, and a plurality of keys formed to protrude along the thickness direction to the pad body; It is formed through a plurality of adjacent keys among the plurality of keys of the pad body, and includes a plurality of slits to prevent other keys from interlocking when one of the adjacent keys is operated.

In addition, each slit is characterized in that it forms a polygonal shape with one side open or an ellipse shape with one side open.

In addition, the keypad having a key interlocking prevention function according to the present invention, the pad body; A plurality of first keys formed to protrude along the thickness direction of the pad body; A plurality of second keys arranged in an area between each of the first keys; It is formed through a region between the first key and the second key of the pad body, and includes a plurality of slits to prevent other keys from interlocking when one of the first and second keys is operated.

In addition, it is characterized in that one of the first key and the second key having a relatively small pressing area is formed to protrude more than the other.

In addition, it is characterized in that it further comprises a frame interposed between the pad body and the second key.

In addition, the space between the first key is characterized in that the receiving space forming portion for forming the receiving space so that the frame can be accommodated protruding the thickness direction of the pad body.

In addition, the frame is characterized in that it is formed of a metal member.

In addition, the portable terminal according to the present invention is characterized in that any one of the keypad is provided in the portable terminal.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The attached FIG. 4 is an exploded perspective view showing the structure of a portable terminal to which a keypad having a key interlocking prevention function according to the present invention is applied, and FIG. 5 is a perspective view showing the main part of FIG. 4.

In addition, Figure 6 is a perspective view showing the operating structure of the keypad having a key interlocking prevention function according to the present invention.

Meanwhile, FIG. 7 is an exploded perspective view showing another embodiment of a keypad having a key interlocking prevention function according to the present invention, and FIG. 8 is a cross-sectional view showing a structure in which the keypad of FIG. 7 is combined.

9 is a perspective view showing a modified example of the slit as a keypad having a key interlocking prevention function according to the present invention.

Hereinafter, for example, a keypad provided with a key interlocking prevention function according to the present invention is applied to a folder-type portable terminal composed of a main body, a folder folded to the main body and connected to the main body so as to be rotatable relative to the main body so as to open and close the main body. I will do it. Here, the body and the folder may be collectively referred to as a terminal body.

However, in describing the present invention, detailed description of known functions or configurations will be omitted to clarify the gist of the present invention.

As shown in FIG. 4, the portable terminal to which the keypad according to the present invention is applied is composed of a folder 111 and a body 121 that are rotatably coupled to each other.

A movable hinge portion 113 is formed on one side of the folder 111 so as to be rotatably coupled to the main body 121, and a display portion 115 is provided on the inner surface to output predetermined visual information. have.

The main body 121 includes a case 123 forming a predetermined accommodation space therein, a substrate 131 accommodated inside the case 123 for various control, and a plurality of keys for inputting signals. It is provided with a (143) is provided with a keypad 141 accommodated on the upper side of the inner substrate 131 of the case (123).

In addition, a fixed hinge portion 126 is formed on one side of the case 123 so that the movable hinge portion 113 of the folder 111 can be relatively rotated.

The upper surface of the substrate 131 is provided with a plurality of so-called metal domes, so-called metal domes capable of elastic deformation along the thickness direction so that they can be turned on/off during a pressing operation, and a light emitting element 135 for illumination. The keypad 141 on which a plurality of keys 143 are respectively formed is disposed on the upper side to correspond to each push operation switch 133, which will be described below.

The keypad 141 of the present invention, as shown in Figure 5, has a predetermined thickness and is formed of, for example, rubber or urethane material The pad body 142 disposed on the upper surface of the substrate 131 and the pad body 142 are formed at positions corresponding to the pressing operation switches 133 so as to protrude along the thickness direction of the pad body 142 to be pressed. It includes a plurality of keys (143). Furthermore, an interlocking prevention portion is formed in an area between each key 143. The interlocking prevention portion may be formed of a plurality of slits 145 penetrating the plate surface of the pad body 142 at a predetermined length along the circumferential direction of each key 143.

Each of the slits 145 is operated independently of the other keys when the key is pressed, and one of the keys 143 of the keypad 141 is operated independently. To be formed in the region between each key 143, the slit 145 is formed to form an open polygonal shape on one side in an incised form like a kind of sheath, and is a part of the pad body 142 corresponding to each key. (Hereinafter referred to as the movable pad 142a) allows the pad body 142 to be moved relative to the pad body 142 along its thickness direction according to a pressing operation of the key.

In addition, the movable pad 142a is elastically connected to the pad body 142 by a portion where the slit 145 is not formed (hereinafter referred to as a connecting pad 142b) along the outer shell of the movable pad 142a. Bar, the movable pad 142a corresponding to each key 143 may be elastically moved relative to the pad body 142 through the connection pad 142b when pressed.

That is, as shown in the accompanying Figure 6, each key 143 of the keypad 141 according to the present invention through a movable pad 142a and a connection pad 142b formed through a slit 145 when pressed. It can be moved relative to the pad body 142 elastically along its thickness direction and can be operated independently, and after the pressing operation is completed, it can be returned to the initial position by the elastic force of the connecting pad 142b.

On the other hand, the force of pressing each key 143 on the bottom surface of the pad body 142, that is, the bottom surface of the movable pad 142a corresponding to each key 143, can be effectively transmitted to each push operation switch 133. A plurality of push protrusions 144 protruding downward along the thickness direction are formed respectively.

As described above, according to the present invention, when a key operation of any one of the keys 143 of the keypad 141 is operated, the key is independently operated from the other peripheral keys, and the peripheral keys are linked. By making it possible to prevent this, it is possible to prevent a malfunction due to interlocking of the keys 143.

In addition, such a structure makes it possible to improve the click feeling of the keypad 141 and the key 143.

Hereinafter, another embodiment of a keypad having a key interlocking prevention function according to the present invention will be described with reference to FIGS. 7 to 8.

In addition, the same or equivalent parts and the same reference numerals are given to the same or equivalent parts, and detailed description thereof will be omitted.

7 to 8, the keypad having a key interlocking prevention function according to another embodiment of the present invention is formed of a rubber or urethane material having a predetermined thickness A pad body 142 disposed on an upper surface of the substrate 131, a plurality of first keys 143 formed to protrude along the thickness direction of the pad body 142, and each of the first keys 143 It includes a plurality of second keys (143') that are arranged to be push-operated in the region between each of the first key (143) to be provided with a boundary surface corresponding to the shape of. An interlock prevention portion is formed in a region between the first key 143 and the second key 143'. The interlocking prevention portion may have a shape of a plurality of slits 145 penetrating the plate surface of the pad body 142 in a predetermined length in the circumferential direction of the first key 143 and the second key 143'.

As described above, the first key 143 of each key 143 and 143' formed to protrude on the pad body 142 may be composed of keys having characters and various additional functions, and the second key 143' is It can be composed of numeric keys.

In addition, the second key 143' may be formed by molding plastic or rubber, and is disposed in a region between the first keys 143 and then bonded through a bonding process.

Each of the slits 145 is operated independently of the other keys when the key is pressed, and each key 143, 143' is operated independently of the other keys, so that each key can be prevented from interlocking. It is formed in the region between the keys 143,143', the slit 145 is formed to form an open polygonal shape on one side in an incised form like a kind of sheath, and the pad body 142 corresponding to each key 143,143' ), a part (hereinafter referred to as a movable pad 142a) can be moved relative to the pad body 142 along its thickness direction according to a pressing operation of the keys 143 and 143'.

In addition, the movable pad 142a is elastically connected to the pad body 142 by a portion where the slit 145 is not formed (hereinafter referred to as a connecting pad 142b) along the outer shell of the movable pad 142a. The movable pads 142a corresponding to the respective keys 143 and 143' can be elastically moved relative to the pad body 142 through the connection pads 142b during the pressing operation. Description will be omitted.

On the other hand, on the bottom surface of the pad body 142, that is, the bottom surface of the movable pad 142a corresponding to each key 143,143', the force of pressing each key 143 is applied to each push operation switch 133 of the substrate 131. ), a plurality of pressing protrusions 144 protruding downward along the thickness direction are formed respectively.

In addition, in the present invention, the first key 143 is formed to have a relatively small pressing area compared to the second key 143', and the second key 143' when the first key 143 is pressed. The first key 143 is formed to protrude more along the thickness direction of the pad body 142 than the second key 143' so as to reduce interference with and improve convenience and click feeling.

In addition, the keypad 142 is provided with a frame 150 for keeping its shape flat, and the frame 150 is interposed between the pad body 142 and the second key 143' to provide a keypad. The shape of 141 can be kept flat.

That is, the frame 150 is in the form of a plate having a predetermined thickness, and a plurality of through holes 151 are formed through the thickness direction so that each of the first keys 143 can pass through the plate surface. In the region between the keys 143, the receiving space forming portion 146 forming the receiving space 147 so that the frame 150 can be accommodated is formed to protrude to have a predetermined height along the thickness direction of the pad body 142. It is.

In addition, as the material of the frame 150, a hard material, for example, rubber, plastic, or the like, may be applied, and a metal member is preferably applied.

On the other hand, the attached Figure 8 is a modification of the above-described slit, the slit can be formed to form one side to form an open polygonal shape 145 as well as one side to form an open ellipse shape 145'. Of course, it can be formed in a variety of other shapes, of course.

The preferred embodiments of the present invention have been exemplarily described above, but the scope of the present invention is not limited to such specific embodiments, and can be appropriately changed within the scope described in the claims.

As described above, according to the keypad provided with the key interlocking prevention function according to the present invention and the portable terminal having the same, it is possible to prevent other keys in the vicinity from interlocking when one of the keys is operated, and the key It is possible to improve reliability by fundamentally preventing malfunctions caused by interlocking, and to improve the click feeling of keys.

In addition, the keypad of the present invention, it is possible to eliminate the hassle of use and time wasted due to the random change of the portable terminal set value due to the malfunction of the key and the reset of the changed set value.

Claims (11)

Pad body, A plurality of keys formed to protrude along the thickness direction of the pad body; A keypad having a key interlocking prevention function including a plurality of slits that are formed through the adjacent keys among a plurality of keys of the pad body to prevent other keys from interlocking when one of the adjacent keys is operated. According to claim 1, Each of the plurality of slits is a keypad having a key interlocking prevention function, characterized in that one side forms an open polygonal shape. delete A pad body; A plurality of first keys formed to protrude along the thickness direction of the pad body; A plurality of second keys arranged in an area between each of the first keys; Key interlocking is formed through the region between the first key and the second key of the pad body, a plurality of slits to prevent other keys from interlocking when one of the first key and the second key is operated Keypad with prevention function. The method of claim 4, Each of the plurality of slits is a keypad having a key interlocking prevention function, characterized in that one side has an open polygonal shape. delete The method of claim 4, A keypad having a key interlocking prevention function, characterized in that one of the first key and the second key, which has a relatively small pressing area, is formed to protrude more than the other. The method of claim 4, A keypad having a key interlocking prevention function, further comprising a frame interposed between the pad body and the second key. The method of claim 8, A keypad having a key interlocking prevention function, characterized in that in the region between the first keys, an accommodation space forming portion forming an accommodation space so that the frame can be accommodated is formed protruding in the thickness direction of the pad body. The method of claim 8, The frame is a keypad having a key interlocking prevention function, characterized in that formed of a metal member. A terminal body; Claims 1, 2, 4, 5, or 7 to 10 mounted to the terminal body to correspond to the substrate embedded in the terminal body, and inputting a signal to the substrate during a pressing operation. A portable terminal comprising a keypad according to any one of the preceding claims.

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