KR100448254B1 - Slim type key board - Google Patents

Abstract

The present invention relates to a slim keyboard, wherein a plurality of fixing protrusions protrude to a predetermined length on a bottom thereof, and a rectangular main body in which sliding grooves are formed at an inner edge thereof, and extending at a predetermined angle integrally from one side of the main body. First and second hinge protrusions formed on both sides of the center, and second hinge protrusions formed on both sides of the link holder, each having a circular support groove formed at the center thereof; Guide protrusions which are guided to the sliding groove of the main body are formed at both sides thereof, and coupling holes are formed at the inner side to which the first hinge protrusion of the link support part is coupled. A link member foldable on the holder; A key top having a first hinge piece having a coupling groove to which the third hinge protrusion of the link member is coupled and a second hinge piece having a sulfing coupling groove to which the second hinge protrusion of the link support slides are coupled; A backing board for fixing the link holder by forming fixing holes through which the fixing protrusions of the link holder are installed per unit; It is characterized by consisting of a slim keyboard characterized in that each seat is seated on the membrane located on the backing board and the upper surface is composed of a cushion rubber tightly supported in the circular support groove of the link support.

Description

Slim type keyboard {Slim type key board}

The present invention relates to a slim keyboard switch, and more particularly, to improve the product productivity by improving the unit keyboard switch installed on a board such as a notebook PC, to reduce parts, reduce the number of assembly processes, It is to improve the touch feeling to reduce the fatigue of the user.

In general, as a means for inputting information characters, a notebook or information terminal is provided with a key switch for each unit, these keyswitch is made of a slim type, most of the keyboard is made of a link type.

Portable notebooks are manufactured to have the smallest size and weight for easy portability, which means that the portion of the keyboard including the monitor occupies the body.

As shown in FIG. 1, the conventional keyboard has a hinge piece 4-1, 4-2 for installing a keyboard switch on the backing board 4, and the hinge piece 4- 1, 4-2 is a structure bent to the upper surface of the backing board (4).

In the keyboard switches installed on the hinge pieces 4-1 and 4-2, the hinge protrusions 1a and 2a provided at both ends of the first link 1 and the second link 2 are connected to each other. The single side hinge protrusions 1b and 2b are connected to the hinge pieces 3-1 and 3-2 integrally formed on the bottom of the key top 3, which is a pressing part. Usually, the slim keyboard is a key top from the backing board 4. To the upper surface of (3), it is installed in an ultra-thin shape corresponding to the width of about 6mm.

The keyboard switch as described above forms a keyboard in a plurality of combinations, the cushion rubber 5 is installed in the center of the bottom surface of the key top, the cushion rubber 5 is installed on the backing board (4) It serves to elastically compensate for the return force of the key top to the pressing force applied from the key top (3).

The bottom of the cushion rubber (5) was to press the corresponding point of the membrane (6) seated on the backing board (4) to be able to enter the letter of the corresponding key.

However, such a conventional keyboard requires a hole (HOLE) that can penetrate the plurality of hinge pieces in the membrane 6 due to the hinge pieces formed on the backing board, which causes a fatal damage to the waterproof. This is being pointed out.

For example, water spilled on the keyboard can cause catastrophic damage to the main printed circuit board that can be installed on the underside through the spaces (holes) that form the hinge pieces of the backing board, through each keytop. There is concern.

On the other hand, as shown in the accompanying FIG. 2 in consideration of the above point, to form a fixing hole (4a) of a predetermined diameter on the backing board 4, the fixing hole (4a) for supporting the link separately The holder 7 is configured to be installed in units on the keyboard, and as described above, the holder 7 includes a first link 1 and a hinge protrusion 2a having hinge protrusions 1a and 1b at both ends. The second link 2 formed at both ends of the second link 2 is diffractively installed, and a cushion rubber 5 is installed at the center between the links so that the hinge tops 3-1 and 3-2 are formed on the bottom surface. 3) and a keyboard having a shape that elastically supports the membrane 6 is installed. The fixing hole 4a of the backing board 4 is integrally formed on the bottom surface of the holder 7. Fixing protrusions 7a are fitted, and one end of the fixing protrusions 7a protruding from the bottom surface of the backing board 4 is fused with an electric iron. Turn the holder (7) it was to be firmly supported.

In the keyboard having the structure as described above, the fixing protrusion 7a of the holder is fused to the backing board 4 to solve the above-mentioned waterproof problem, but there is a problem in that the number of parts increases.

In the conventional keyboard as described above, since the pressing force is absorbed only by the cushion rubber 5 when the key top 3 is pressed, fatigue stress is concentrated on the cushion rubber during a long time, resulting in a life problem.

For reference, the keyboard switch material of the keyboard as described above is mostly made of synthetic resin, and in the injection manufacturing, the connection part and the contact part according to mutual assembly must be precise, so the number of assembly parts must be absolutely small for the advantageous condition. However, the actual increase of each part is that the injection mold manufacturing, design cost, material cost, etc. for the product can be said to be uneconomical, there is a disadvantage that the defects increase even in the assembly by the production of the product.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to reduce the number of assembly parts of the keyboard switch which is installed in units of units on the keyboard, and to improve the assemblability, and the key top portion of the keyboard switch. It minimizes the pressing force of the cushion rubber required when pressing, so as to disperse the fatigue stress of the cushion rubber in long time use, to reduce the fatigue of the user, and to provide waterproof function by assembling.

In order to achieve the above object, according to the present invention, a plurality of fixing projections protruding to a predetermined length on the bottom surface and a rectangular main body formed with a sliding groove on the inner edge, and extending with a predetermined angle integrally from one side of the main body A link holder formed of a link support portion having a first hinge protrusion formed at both sides of the center, and having a second hinge protrusion formed at both sides thereof, and having a circular support groove formed at the center thereof; Guide protrusions which are guided to the sliding groove of the main body are formed at both sides thereof, and coupling holes are formed at the inner side to which the first hinge protrusion of the link support part is coupled. A link member foldable on the holder; A key top having a first hinge piece having a coupling groove to which the third hinge protrusion of the link member is coupled and a second hinge piece having a sulfing coupling groove to which the second hinge protrusion of the link support slides are coupled; A backing board for fixing the link holder by forming fixing holes through which the fixing protrusions of the link holder are installed per unit; A slim keyboard is provided, which is seated in units of membranes located on the backing board, and the upper surface is formed of a cushion rubber that is tightly supported in a circular support groove of the link support.

1 is a longitudinal sectional view showing a conventional keyboard;

Figure 2 is a longitudinal sectional view showing another conventional keyboard,

3 is a perspective view showing a separate keyboard of the inventors,

4 is a longitudinal cross-sectional view showing a keyboard of the present invention;

Figure 5 is a longitudinal sectional view showing a keyboard of one embodiment according to the present invention.

◎ Explanation of symbols for main part of drawing

10: link holder 11: main body

12: fixed protrusion 13: sliding groove

14: link support 14a: circular support groove

14b: first hinge protrusion, 14c: hinge protrusion 15: hinge portion 20: link member 22: guide protrusion 24: coupling hole 26: third hinge protrusion 30: key top 31: first hinge piece 31-1: coupling groove 32: Second hinge piece 32-1: sliding engagement groove 40: backing board 41: fixing hole

50: cushion rubber 60: membrane

Hereinafter, with reference to the accompanying Figures 3 to 5 will be described in detail with respect to the present invention.

3 is a perspective view showing a separate keyboard of the present invention, Figure 4 is a longitudinal cross-sectional view showing a keyboard of the present invention.

In the keyboard switch of the present invention, a plurality of fixing protrusions 12 protrude to a predetermined length at a bottom thereof, and a rectangular main body 11 having a sliding groove 13 formed at an inner edge thereof, and integrally formed from one side of the main body 11. The link supporting portion 14 is formed to extend at a predetermined angle, and the first hinge protrusion 14b is formed on both sides of the center, and the second hinge protrusion 14c is formed on both sides, and the circular support groove 14a is formed in the center. Link holder 10 consisting of; Guide holes 22 which are guided to the sliding grooves 13 of the main body 11 are formed at both sides, and coupling holes 24 to which the first hinge protrusions 14b of the link supporting portion 14 are coupled to the inner side are formed. Is formed and the third hinge projections 26 are formed on both sides of the other end, the link member 20 is provided to be foldable on the link support and the link holder; The first hinge piece 31 having a coupling groove 31-1 to which the third hinge protrusion 26 of the link member 20 is coupled and the second hinge protrusion 14c of the link support part are slid. A key top having a second hinge piece 32 having a coupling groove 32-1 formed thereon; A backing board 40 to which the fixing holes 41 through which the fixing protrusions 12 of the link holder 10 are installed are formed for each unit to fix the link holder 10; The cushion 60 is seated on the membrane 60 positioned on the backing board 40 in units and the upper surface is tightly supported in the circular support groove 14a of the link support 14. It consists of a slim keyboard.

The bottom portion of the circular support groove 14a is integrally formed with the link holder 10 to be inclined at a predetermined angle with respect to the link support 14 having a predetermined angle so as to be in close contact with the upper surface of the cushion rubber 50.

The connecting portion of the link support portion 14 formed integrally with the link holder 10 is a hinge portion 15 formed with a thin material, and is twisted from the link holder 10 according to the inclination angle of the link support portion 14. And elastically supported from the link holder.

On the other hand, Figure 5 attached to another embodiment of the present invention is a longitudinal cross-sectional view showing a keyboard of an embodiment according to the present invention, the circular support groove 14a is replaced by a circular hole (14h) cushion rubber 50 ) May be closely attached to the bottom of the key top through the circular hole (14h).

Referring to the actions and effects of the present invention, the slim keyboard is configured as described above are as follows.

Installation of the keyboard switch is fixed to the backing board 40 by a plurality of fixing holes 41 formed in units by uniting the fixing protrusions 12 formed on the bottom surface of the main body 11 of the link holder 10, and fixed to the fixed The fixing protrusion 12 portion passing through the ball 41 is fused to one end to firmly fix the link holder 10 to the backing board 40.

As the fixing protrusion 12 is fusion-bonded with an electric iron in one end in a state where the fixing protrusion 12 penetrates through the fixing hole 41, the fixing protrusion 12 may have a waterproof effect as in the prior art.

In the state in which the link holder 10 is installed as described above, one side portion of the link support part 14 of the link holder is formed through a hinge part 15 on a predetermined angle.

In such a state, the first hinge protrusions 14b formed at both sides of the link support part 14 coincide with the coupling holes 24 formed at both sides of the intermediate point of the link member 20, and the link member 20 is coupled thereto. The guide protrusions 22 formed at one end of each side of the link support part 14 and the link member 20 are mutually folded in a state of guiding the sliding groove 13 formed in the main body 11 of the link holder 10. Assemble it as much as possible.

In the above state, the cushion rubber 50 for inputting the circuit of the membrane 60 provided on the backing board 40 is inserted and installed on the bottom surface of the link support 14, but the bottom surface of the cushion rubber 50 is It is placed on the membrane 60, and its upper surface guides to the circular support groove 14a of the link support 14.

In addition, the second hinge protrusion 14c formed at one end of the link support 14 and the third hinge protrusion 26 formed at one end of the link member 20 may be coupled to each other by the link support 14 and the link member 20. The keyboard by combining the respective keyboard switches in a manner that is fitted into the coupling grooves 32-1 and the sliding coupling grooves 31-1 of the hinge pieces 32 and 31 formed on the bottom of the key top 30, respectively. Form it.

On the other hand, the upper surface of the cushion rubber 50 guided by the circular support groove (14a) is in a state of being in close proximity to the bottom surface of the circular support groove (14a) formed at an angle close to the upper surface of the cushion rubber, the portion of the key top 30 When pressurizing, the lower surface of the circular support groove 14a is horizontally aligned according to the operation of descending by the folding of the link supporting portion 14, so that the tensioning action against the pressing force can be accurately performed.

At this time, the guide protrusion 22 of the link member 20 is guided from the sliding groove 13 formed in the main body 11 of the link holder 10, and the first hinge protrusion 14b of the link support 14 is shafted. And the second hinge protrusion 14c formed at one end thereof is rotated around the hinge pieces 31 and 32 formed on the bottom surface of the key top 30 together with the hinge protrusion 26 of the link member 20. Becomes

Referring to the pressing force applied to input information from the key top 30 as described above, the cushion rubber 50 acts between the circular support groove 14a of the link support 14 and the membrane 60 In the hinge portion 15, a repulsive force due to torsion is also formed, and a constant load is generated, and a load that is returned after pressing the key top 30 is simultaneously made at the torsion of the cushion rubber 50 and the hinge portion 15, and thus, a conventional keyboard switch. The stress concentrated on the cushion rubber 50 can be secured by dispersing long time use.

That is, the force pressed through the key top 30 is a function of distributing the force transmitted to the cushion rubber 50 primarily while the load is primarily transmitted to the link support 14 and the link member 20, and the cushion rubber 50. Since the constant load of) can be maintained longer than the conventional keyboard, there is an advantage of reducing the fatigue of the user when using the keyboard for a long time.

On the other hand, in the link member 20 and the link support portion 14, which acts together with the tension action of the cushion rubber 50, the link support portion 14 is torsion in the hinge portion 15 of the link holder 10 side The action occurs so that the link support is tensioned, that is, a return force is generated through the hinge portion 15 to assist the holding force of the key top 30 together with the cushion rubber 50.

In addition, the link support portion 14 is integrally formed in the link holder 10 installed on the backing board 40, it is possible to reduce the mold, mold design cost and material according to the injection manufacturing, as well as the link member The assembly of the cushion rubber 50 including the 20 and the key top 30 is simple, so that the time can be shortened even in the assembly.

As described above, the slim keyboard of the present invention reduces the number of parts to be assembled with the link member to be assembled by integrally forming the link support portion in the link holder installed on the backing board, and at the same time, the mold and mold design cost by injection manufacturing It can be economical, improve the assemblability, and the force to press the key top to press the cushion rubber while preferentially distributed to the link support and the link member, thereby reducing the user's fatigue caused by the click. .

Claims (4)

A plurality of fixing protrusions protrude to a predetermined length at a bottom thereof, and a rectangular main body having sliding grooves formed at an inner edge thereof, extending at a predetermined angle integrally from one side of the main body, and having first hinge protrusions formed at both centers thereof. A link holder having a second hinge protrusion formed at both sides thereof and having a circular support groove formed at a center thereof; Guide protrusions which are guided to the sliding groove of the main body are formed at both sides thereof, and coupling holes are formed at the inner side to which the first hinge protrusion of the link support part is coupled, and third hinge protrusions are formed at both ends of the other end, so that the link support part and the link are formed. A link member foldable on the holder; A key top having a first hinge piece having a coupling groove to which the third hinge protrusion of the link member is coupled and a second hinge piece having a sulfing coupling groove to which the second hinge protrusion of the link support slides are coupled; A backing board for fixing the link holder by forming fixing holes through which the fixing protrusions of the link holder are installed per unit; A slim keyboard, characterized in that the seat is seated on each of the membrane on the backing board, the upper surface is composed of a cushion rubber that is closely supported in the circular support groove of the link support. The slim keyboard according to claim 1, wherein a bottom portion of the circular support groove is inclined at a predetermined angle with respect to the link support having a predetermined angle to be in close contact with the upper surface of the cushion rubber. The slim keyboard according to claim 1, wherein the connecting portion of the link support portion integrally formed with the link holder is twisted from the link holder according to the inclination angle of the link support portion, and is elastically supported from the link holder. A plurality of fixing protrusions protrude to a predetermined length at a bottom thereof, and a rectangular main body having sliding grooves formed at an inner edge thereof, extending at a predetermined angle integrally from one side of the main body, and having first hinge protrusions formed at both centers thereof. A link holder having a second hinge protrusion formed at both sides and having a circular support formed at a center thereof; Guide protrusions which are guided to the sliding groove of the main body are formed at both sides thereof, and coupling holes are formed at the inner side to which the first hinge protrusion of the link support part is coupled. A link member foldable on the holder; A key top having a first hinge piece having a coupling groove to which the third hinge protrusion of the link member is coupled and a second hinge piece having a sulfing coupling groove to which the second hinge protrusion of the link support slides are coupled; A backing board for fixing the link holder by forming fixing holes through which the fixing protrusions of the link holder are installed per unit; And a cushion rubber seated on a membrane positioned on the backing board for each unit and having an upper surface penetrating and supporting the bottom of the key top through the circular hole of the link support.