KR20090111591A - Rotatable inputting apprartus - Google Patents

Abstract

PURPOSE: A rotatable inputting apparatus is provided to prevent the secession of the center key by interposing between the center key and the center dome button. CONSTITUTION: The center hole(111) of the center key(120) is formed in the core region of the wheel key(110). The magnet of ring type(112) magnetized multipolarly in the bottom surface edge side of the wheel key is arranged. The combining projection(113) for the ring coupling plane(140) is formed in the center hole. The center pin(121) for pressing the center dome button(161) is protruded at the center of lower side of the center key. The protruded chapter(172) is formed in the base plate(170).

Description

Rotary input device {ROTATABLE INPUTTING APPRARTUS}

The present invention relates to a rotary input device mounted on a terminal or a remote controller such as a mobile communication terminal or a portable personal information terminal, and more particularly, an assembly of a rotary input device having a dome-shaped switch and a button for pressing the switch. The present invention relates to a rotary input device capable of preventing detachment of the button and movement due to its own weight, thereby allowing for ease of assembly.

In general, the remote controllers for remote control of a portable terminal such as a mobile communication terminal or a personal information terminal or a TV perform various functions provided by the device itself, such as menu search, telephone number search, volume control, and channel change. Navigation keys are provided for this purpose.

The navigation key includes a button for recognizing a manipulation force pressed by a user, a wheel that is rotated forward or backward by the user, a sensor for recognizing the rotation of the wheel, and the like.

An example of a rotary input device having such a button, a wheel, and the like is schematically illustrated in FIG. 6.

As shown in FIG. 6, the rotary input device according to the related art includes a wheel key 10, a center key 20, a holder 30, a coupling plate 40, a flexible circuit board 60, and a base plate 70. It consists of.

The wheel key 10 is a member that is directly rotated in the forward or reverse direction by receiving a direct rotational operation force from the user, the center hole 11 through which the center key 20 penetrates through the center portion and a ring-shaped multipolar magnetized on the bottom edge side. The magnet 12 is provided, and the projections 13 protrude stepwise around the center hole 11 so that the coupling protrusions 13 into which the ring-shaped coupling plates 40 are inserted are formed at equal intervals.

The wheel key 10 of this configuration is rotated together with the ring-shaped magnet 12 by the user's rotation operation, this rotation operation is the rotation angle, rotation direction, rotation by the magnetic element 63 of the flexible circuit board 60 Speed, etc. are detected.

The center key 20 is a member having a cylindrical shape in which upper and lower surfaces are shielded, and a center pin 21 protrudes from the center of the lower side. The center pin 21 presses the dome button 61 provided at the center of the flexible circuit board 60 when the center key 20 is pressed by the user.

The holder 30 is provided on the lower side of the wheel key 10 to rotatably support the wheel key 10, and a lower side of the coupling piece 31 coupled to the base plate 70 is formed stepwise at equal intervals. .

The ring-shaped coupling plate 40 is coupled to the engaging projection 13 of the wheel key 10, and one end thereof is supported by the holder 30 to prevent the wheel key 10 from being separated. A plurality of coupling holes 41 are formed.

The flexible circuit board 60 has a central dome button 61 formed at the center portion corresponding to the center key 20 and four peripheral dome buttons 62 formed around the center dome button, and four peripheral domes. The button 62 is arranged to be pressed by the four pressing pins 32 provided in the holder 30. In addition, the flexible circuit board 60 includes a magnetic element 63 for detecting rotation of the ring magnet 12.

The base plate 70 is attached to the lower side of the flexible circuit board 60 to support the flexible circuit board 60, and the base plate 70 guides the center key 20 in the vertical direction, but the center key ( Protruding piece 71 for preventing rotation of the 20 is formed to protrude through the flexible circuit board 60 in the central portion.

However, in the rotary input device of the related art having the above-described configuration, when the coupling piece 31 of the holder 30 is coupled to the base plate 70, a separate input for coupling the rotary input device as shown in FIG. The wheel key assembly in which the ring magnet 12 and the holder 30 are coupled to the jig of the jig is turned upside down, and then the base plate 70 on which the flexible circuit board 60 and the center key 20 are assembled is turned upside down to the wheel key assembly. Settle down. Thereafter, the coupling piece 31 of the holder 30 is completely coupled to the base plate 70 through a separate laser welding, etc. At this time, the center key 20 is moved to the outside in the process of inverting and mounting the base plate 70. There was a problem that can be separated because the assembly of the rotary input device is not easy.

In addition, since the center pin 21 protruding from the lower side of the center key 20 is seated on the upper surface of the dome button 61 having a curved cross section, the center key 20 is inclined by its own weight. As a result, the assembly of the rotary input device is very inconvenient, and there is a problem that the mass productivity of the product is lowered.

The present invention was devised to solve the above-mentioned problems of the prior art, and an object of the present invention is to temporarily attach a center key to a center dome button by interposing an adhesive means between the center key and the center dome button, thereby leaving the center key. And it is to provide a rotary input device that can prevent the tilt due to its own weight.

In order to achieve the above object of the present invention, the present invention is a wheel key that is rotated by the rotation operation force and the center hole is formed in the center, and the lower portion of the wheel key is provided on the side adjacent to the rim to rotatably support the wheel key A holder having at least one pressing pin and at least one coupling piece formed at equal intervals on the edge side thereof, and a ring-shaped coupling plate which is fixedly coupled to a part of the wheel key and slidably supported on a lower side of the holder; And a center key having an upper portion protruding through the center hole of the wheel key and movable vertically and protruding on the lower surface, an element for detecting rotation of the wheel key, the pressing pin and the center. A flexible circuit board having a center dome button for receiving a pressing force of a pin and at least one peripheral dome button, and the flexible circuit board And a base plate for supporting and adhesive means coupled to the curved upper surface of the center dome button to attach the center pin to the center dome button to prevent the center pin from falling off and falling due to its own weight. It is possible to provide a rotary input device characterized in that.

Here, the rotary input device of the present embodiment further comprises a multi-pole magnetized ring-shaped magnet provided on the bottom edge of the wheel key to detect the rotation of the wheel key, and at least one magnetic element provided on the upper surface of the flexible circuit board It is characterized by.

In addition, the holder is provided with four pressing pins at equal intervals in a region adjacent to the rim, the coupling piece is disposed between the pressing pins and characterized in that four are provided stepped on the rim side.

In addition, the holder is characterized in that it can be elastically deformed so as to press the peripheral dome button with the pressing pin by the pressing force given from the outside.

In addition, the base plate is provided with a protrusion for protruding through the flexible circuit board to guide the vertical movement of the center key to suppress the rotational movement of the center key, the center key is the edge side so that the protrusion is inserted It is characterized in that a part of the incision.

In addition, the adhesive means is a double-sided adhesive tape coated with an adhesive on both sides so that the center key can be attached on the center dome button.

According to the present invention, the center key can be temporarily attached onto the center dome button by interposing the adhesive means between the center key and the center dome button, thereby preventing the center key from being separated even when the base plate is turned upside down. In addition, it is possible to provide a rotary input device capable of preventing the inclination of the center key due to its own weight during assembly.

Hereinafter, a rotary input device according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

As shown in Figure 1 and 2, the rotary input device 100 according to an embodiment of the present invention is a wheel key 110, a center key 120, a holder 130, a ring-shaped coupling plate 140, adhesive means 150, a flexible circuit board 160, and a base plate 170.

The wheel key 110 is a member that receives a direct rotational operation force from the user and is rotated in the forward or reverse direction. The center hole 111 penetrates the center key 120 through the center portion, and the ring shape is multipole magnetized on the bottom edge side. The magnet 112 is provided and protrudes stepped around the center hole 111 so that the coupling protrusion 113 into which the ring-shaped coupling plate 140 is inserted is formed at equal intervals.

The wheel key 110 is made of a disc-shaped member having a predetermined thickness as shown in the drawing, and the groove 114 having an annular shape is formed stepwise so that the ring magnet 112 is attached to a position near the bottom edge. In this case, the ring magnet 112 is attached to the groove 114 using an adhesive or the like and rotated integrally with the wheel key 110.

In addition, a plurality of wheel keys 10 are formed at equal intervals so that the engaging protrusions step around the center hole 111 to the inside of the groove 114. Herein, the coupling protrusion 113 is fixedly coupled to the ring-shaped coupling piece 131 to be described later, and the ring-shaped coupling piece 131 is slidably supported by the holder 130, thereby preventing the wheel key 110 from being separated.

The wheel key 110 of this configuration is rotated together with the ring-shaped magnet 112 by the user's rotation operation, the rotation operation is the rotation angle, rotation direction, rotation by the magnetic element 163 of the flexible circuit board 160 Speed, etc. are detected.

The center key 120 is a member having a cylindrical shape in which upper and lower surfaces are shielded, and a center pin 121 protrudes from the center of the lower side to press the center dome button 161. The center pin 121 presses the center dome button 161 provided at the center of the flexible printed circuit board 160 when the center key 120 is pressed by the user.

The center key 120 is guided by the protruding piece 172 formed on the base plate 170 so that the flow in the direction perpendicular to the inner circumferential surface of the wheel key 110 can be suppressed.

In addition, the center key 120 of the present embodiment is preferably attached to the center dome button 161 formed on the flexible printed circuit board 160 by the bonding means 150, so that the center key 120 is a flexible printed circuit board Even when the base plate 170 to which the 160 is attached is inverted and assembled, the base plate 170 may not be separated from the center dome button 161 and may not be inclined or collapsed from the center dome button 161 due to its own weight.

The holder 130 is provided at the lower side of the wheel key 110 to rotatably support the wheel key 110, and at the lower side, the coupling piece 131 coupled to the base plate 170 is formed stepwise at equal intervals. In the central portion, a hole having a diameter equal to or slightly larger than the outer diameter of the coupling protrusion 113 is formed so that the coupling protrusion 113 of the wheel key 110 can pass therethrough.

In addition, the holder 130 has a stepped portion where the ring-shaped coupling plate 140 is supported so that the ring-shaped coupling plate 140 can be slidably supported. In addition, the holder 130 is fixed to the pressing pin 132 for pressing the peripheral dome button 162 at the position corresponding to the four peripheral dome button 162.

Here, since the holder 130 is formed of a material such as a thin metal, it can be elastically deformed downward when the wheel key 110 is pressed by the user, and thus the pressing pin 132 is a peripheral dome button ( 162).

The ring-shaped coupling plate 140 is coupled to the coupling protrusion 113 of the wheel key 110, and one end thereof is slidably supported by the holder 130 to prevent separation of the wheel key 110 to correspond to the coupling protrusion 113. A plurality of coupling holes 141 are formed at the position.

Adhesive means 150 is to temporarily attach the center key 120 on the center dome button 161, the adhesive means 150 of the present embodiment is preferably a double-sided adhesive tape 150 coated with adhesive on both sides. Do. In FIGS. 1 and 3, the double-sided adhesive tape 150 is highlighted, but in fact, the double-sided adhesive tape 150 is formed to be very thin and is formed to cover the curved upper surface of the central dome button 161.

The flexible circuit board 160 includes a central dome button 161 formed at the center portion corresponding to the center key 120 and four peripheral dome buttons 162 formed around the central dome button, and four peripheral domes. The button 162 is disposed to be pressed by the four pressing pins 132 provided in the holder 130.

Here, the center dome button 161 and the four peripheral dome buttons 162 generate a signal by being pressed by the center pin 121 of the center key 120 and the pressing pin 132 of the holder 130. By using such a signal, a function of the terminal or the remote controller is performed.

In addition, the flexible circuit board 160 has a through hole formed at a position corresponding to the protruding piece 172 such that the protruding piece 172 formed on the base plate 170 penetrates, and detecting the rotation of the ring magnet 112. A magnetic element 163 is provided.

If the magnetic element 163 can detect a magnetic change of the ring magnet 112, various types of known sensors may be used, but in this embodiment, MR (Magneto Resistor) in which the resistance value changes according to the change of the magnetic field. It is preferable to use a sensor or a Great Magneto Resistor (GMR) sensor.

The magnetic element 163 is electrically connected to the flexible circuit board 160 to apply the detection signal to the controller mounted on the main circuit board of the terminal or the remote controller.

Meanwhile, as shown in FIGS. 1 and 3, the magnetic elements 163 are ideally provided in pairs at mutually symmetric positions, but three or more magnetic elements may be provided when more precise sensing is required.

The base plate 170 is attached to the lower side of the flexible printed circuit board 160 to support the flexible printed circuit board 160, and receives signals of the magnetic element 163 and the center / peripheral dome button 162 from the main terminal of the terminal or the remote controller. And a terminal portion 171 for transmitting to the circuit board, and further comprising a protrusion 172 for guiding the center key 120 in a vertical direction to prevent rotation of the center key 120 in the center portion of the flexible circuit board. Protruding to penetrate 160.

The rotary input device 100 of the present invention configured as described above is coupled as shown in FIGS.

First, as shown in FIG. 3, the flexible printed circuit board 160 is completely attached to the base plate 170, and the curved upper surface of the central dome button 161 formed at the central portion of the flexible printed circuit board 160 is formed. The double-sided adhesive tape 150 of the present embodiment is attached. Thereafter, the center key 120 is seated on the center dome button 161 to which the double-sided adhesive tape 150 is attached. At this time, the cut portion of the center side of the center key 120 is inserted into the protruding piece 172 of the base plate 170, so that the rotation of the center key 120 in the vertical direction and rotational direction can be made. Since the center key 120 is attached to the double-sided adhesive tape 150, the center key 120 is prevented from falling off and falling down by its own weight.

Next, as shown in FIGS. 4 and 5, the wheel key assembly in which the wheel key 110, the holder 130, and the ring-shaped coupling plate 140 are coupled to the assembly jig 200 of the rotary input device 100. After the base plate 170, the flexible printed circuit board 160, the double-sided adhesive tape 150, and the center key 120 are assembled thereon, the assembly is turned upside down. In this case, since the center key 120 is attached to the center dome button 161 by the double-sided adhesive tape 150, the center key 120 may be prevented from being separated even if the base plate 170 is turned upside down.

Next, the coupling piece 131 of the base plate 170 and the holder 130 is completely formed through the plurality of holes 173 formed corresponding to the coupling piece 131 of the holder 130 around the base plate 170. Joining or laser welding is performed.

While the rotary input device of the present invention has been described above with reference to a preferred embodiment of the present invention, it will be apparent to those skilled in the art that modifications, changes, and various modifications can be made without departing from the spirit of the present invention.

1 is a schematic exploded cross-sectional view of a rotary input device according to an embodiment of the present invention;

2 is a cross-sectional view of the rotary input device of FIG.

3 is an exploded perspective view of the rotary input device of FIG. 1;

4 is an exploded perspective view schematically illustrating an assembly process of the rotary input device of FIG. 1; And

5 is a perspective view schematically showing the engagement of the rotary input device of FIG.

6 is an exploded cross-sectional view of a rotary input device of the prior art; And

FIG. 7 is an exploded perspective view schematically illustrating an assembly process of the rotary input device of FIG. 6.

<Explanation of symbols for main parts of drawing>

100: rotary input device 110: wheel key

111: center hole 112: ring magnet

113: coupling protrusion 120: center key

121: center pin 130: holder

131: coupling piece 132: pressure pin

140: ring-shaped coupling plate 141: coupling hole

150: bonding means 160: flexible circuit board

161: center dome button 162: peripheral dome button

163: magnetic element 170: base plate

172: protrusion 200: jig

Claims (6)

A wheel key having a center hole formed in the center thereof to be rotated by a rotation manipulation force; A holder provided at a lower side of the wheel key to rotatably support the wheel key and having at least one pressing pin provided at a portion adjacent to the edge and at least one coupling piece at equal intervals on the edge thereof; A ring-shaped coupling plate which is fixedly coupled to a portion of the wheel key and slidably supported on a lower side of the holder; A center key having an upper portion protruding through the center hole of the wheel key, the center key having a center pin formed to be protruded on the lower surface and movable vertically; A flexible circuit board including a device for detecting rotation of the wheel key, a center dome button receiving one of the pressing pins and the pressing force of the center pin, and one or more peripheral dome buttons; A base plate for supporting the flexible circuit board; And Rotating input device comprising an adhesive means that is adhesively coupled to the curved upper surface of the center dome button to attach the center pin on the center dome button to prevent the center pin from falling off and falling by its own weight . The method according to claim 1, And a multi-pole magnetized ring magnet provided on the bottom edge of the wheel key to detect rotation of the wheel key, and at least one magnetic element provided on an upper surface of the flexible circuit board. The method according to claim 1, The holder is provided with four pressing pins at equal intervals in a portion adjacent to the rim, the coupling piece is disposed between the pressing pins and the rotary input device characterized in that provided with four stepped on the rim side. The method according to claim 1, And the holder may be elastically deformed so as to press the peripheral dome button with the pressing pin by a pressing force applied from the outside. The method according to claim 1, The base plate is provided with a protrusion that protrudes through the flexible circuit board to guide the vertical movement of the center key to suppress the rotational movement of the center key, the center key is part of the edge side so that the protrusion is inserted Rotary input device characterized in that the incision. The method according to claim 1, Wherein the adhesive means is a rotary input device, characterized in that the double-sided adhesive tape is coated on both sides to attach the center key on the center dome button.

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