KR20090035847A

KR20090035847A - Information input unit

Info

Publication number: KR20090035847A
Application number: KR1020070100854A
Authority: KR
Inventors: 김호성
Original assignee: 엘지이노텍 주식회사
Priority date: 2007-10-08
Filing date: 2007-10-08
Publication date: 2009-04-13

Abstract

An information input apparatus is provided to reduce the external diameter of a supporting member and a substrate installed at a product and to reduce the installation space of the product in which the information input apparatus is installed by using a magnet magnetized in a radial direction to reduce the external diameter of the magnet. An information input apparatus comprises a substrate(110) in which a plurality of switching elements(111) and a hall sensor(113) are installed. The switching element is radially installed around a virtual vertical line at a right angle to the substrate. The hall sensor is installed at the one side of the switching element. A supporting member(130) having a ring shape is concentric with the virtual vertical line and is fixed to the upper side of the substrate. A rotary cover(140) is rotatably installed at the supporting member and operates by pressing the switching element. A supporting frame(150) having a ring shape is coupled in the inner circumference of the rotary cover. A magnet(170) having a ring shape is magnetized in a radial direction and has a plurality of poles fixed to the rotary cover. A cogging plate(180) is fixed to the supporting member.

Description

Information input device {INFORMATION INPUT UNIT}

1 is a cross-sectional view of a conventional information input device.

2 is a cross-sectional view of an information input device according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

110: substrate 120: base

130: support member 140: rotation cover

150: support frame 160: holder

170: magnet 180: cogging plate

The present invention relates to an information input device for an electronic device.

Today, electronic devices such as mobile communication devices are provided with a button type information input device for generating a signal by a user's push operation and a wheel type information input device for generating a signal by a user's rotation operation.

A conventional wheel type information input device will be described with reference to FIG. 1. 1 is a cross-sectional view of a conventional information input device.

As shown, the ring-shaped support member 13 is fixed to the upper surface of the substrate 11, the ring-shaped rotating cover 21 is concentric with the support member 13 on the upper surface of the support member 13 Rotatably coupled.

A cogging plate 15, which is a magnetic body, is coupled to the lower surface of the support member 13, and a ring-shaped magnet 23 having a plurality of poles is magnetized in the axial direction on the lower surface of the rotary cover 21 to cogging. It is coupled to face the plate 15.

Thus, when the rotary cover 21 is rotated, cogging torque is generated by the cogging plate 15 fixed to the magnet 23 and the support member 13 rotating together with the rotary cover 21, and due to the cogging torque. The user feels a click.

When the information input device is installed in the product, the substrate 11 and the support member 13 are positioned inside the product, and the rotating cover 21 side is exposed to the outside of the product.

However, in the conventional information input device as described above, the magnet 23 magnetized in the axial direction is used, so that the outer diameter of the magnet 23 is relatively long. As a result, the outer diameters of the substrate 11 and the support member 13 also increase, which requires a large amount of space for installing the information input device in the product.

In addition, since the magnet 23 is magnetized in the axial direction, the magnetic flux generated in the magnet 23 is mostly leaked to the upper side of the rotary cover 21, so that the operation of peripheral devices mainly located on the upper side of the rotary cover 21 is performed. Adversely affects. Due to this, there is a disadvantage in that the reliability of the product is degraded, such as malfunctioning peripheral devices.

The present invention has been made to solve the above problems of the prior art, an object of the present invention is to provide an information input device that can reduce the installation space of the product, as well as improve the reliability.

According to an aspect of the present invention, there is provided an information input apparatus comprising: a substrate provided with a switching element and a hall sensor; A support member fixed to the substrate; A rotation cover rotatably installed on the support member and configured to press and drive the switching element; A magnet having a plurality of poles magnetized in a radial direction and fixed to the rotating cover side; It is fixed to the support member and includes means for reacting with the magnet to generate a feeling of click.

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

As illustrated, a substrate 110 provided with a plurality of switching elements 111, a hall sensor 113, and the like is provided. The switching device 111 is radially installed around a virtual vertical line perpendicular to the substrate 110 on one surface of the substrate 110 in a vertical direction, and the hall sensor 113 is installed on one side of the switching device 111.

The base 120 is coupled to the other surface of the substrate 110 in the vertical direction, and a plurality of brackets 121 are formed on the same circumference of the base 120 around the imaginary vertical line to one side of the substrate 110 in the vertical direction. It protrudes.

Hereinafter, one surface of the substrate 110 in the vertical direction is referred to as an 'top surface' and the other surface is referred to as a 'bottom'. In addition, the upper and lower surfaces of the other components are also named corresponding to the substrate 110.

A ring-shaped support member 130 concentric with the virtual vertical line is fixed to the upper surface of the substrate 110. The support member 130 is formed of a nonmagnetic material and is fixed to the substrate 110 because the protrusion 131 protruding from the outer circumferential surface is inserted into the bracket 121.

The upper surface side of the support member 130 is rotatably coupled to the ring-shaped rotary cover 140 forming a concentric with the support member 130.

In detail, the inner peripheral surface side of the rotary cover 140 is coupled to the ring-shaped support frame 150, the support frame 150 and the rotary cover 140 of the rotary cover 140 facing the support member 130 It is formed integrally with the holder 160 formed by injection on the lower surface and the outer surface side. Thus, the rotary cover 140, the support frame 150 and the holder 160 are mutually coupled. Then, the outer circumferential surface side of the support frame 150 is rotatably coupled to the inner circumferential surface side of the support member 130, so that the rotary cover 140 is rotatably installed on the support member 130.

The holder 160 also forms a ring shape, and the holder 160 and the support member 130 are coupled to each other so that a ring-shaped magnet 170 having a plurality of poles and a plurality of cogging plates 180 are opposed to each other. do. Rotating the rotary cover 140, the cogging torque is generated by the cogging plate 180 fixed to the magnet 170 and the support member 130 that rotates with the rotary cover 140, the user due to the cogging torque I feel a click. That is, the cogging plate 180 acts as a means for causing a feeling of creep by working with the magnet 170.

The operation of the information input device according to the present embodiment configured as described above will be described.

When the magnet 170 rotates by the rotation of the rotary cover 140, the hall sensor 113 detects a change in magnetic flux of the magnet 170 to detect the rotation direction and the amount of rotation of the rotary cover 140. Then, according to the rotation direction and the amount of rotation of the rotary cover 140 in the control circuit of the product connected to the substrate 110, the scroll bar on the display of the product to specify the desired data. Then, by pressing the rotary cover 140, the switching element 111 is turned on, and the signal of the switching element 111 is output to the control circuit to determine the direction of the scroll and the amount of scroll.

The information input device according to the present embodiment is provided to reduce the outer diameter of the magnet 170 to reduce the radial length of the information input device.

In detail, a substantially ring-shaped recess 163 is formed on the bottom surface of the holder 160 opposite to the support member 130 and is recessed toward the upper surface to form a cross-sectional shape. In addition, the magnet 170 is coupled to the outer circumferential surface of the depression 163 located radially away from the virtual vertical line. At this time, the magnet 170 is magnetized in the radial direction has a predetermined height.

The support member 130 extends from the inner circumferential surface of the ring-shaped horizontal frame 133 and the horizontal rim 133 parallel to the substrate 110 to the holder 160 and positioned on the inner circumferential surface side of the recess 163. It has a vertical frame 135. The cogging plate 180 is coupled to the outer circumferential surface of the vertical frame 135 to face the magnet 170.

Since the magnet 170 according to the present embodiment is mounted in the radial direction, the outer diameter may be reduced as compared with the conventional magnet 23 (see FIG. 1) that is loaded in the axial direction. Therefore, since the radial lengths of other components including the substrate 110 can be reduced, the installation space of a product such as a mobile communication device in which the information input device is installed is reduced.

In the structure in which the information input device is installed in the product, the substrate 110, the base 120, and the support member 130 are installed inside the product, and the components coupled to the rotary cover 140 and the rotary cover 140 are Exposed to the outside of the product. Therefore, the height of the magnet 170 according to the present embodiment in the radial direction is higher than that of the conventional magnet 23 in the axial direction. However, since the magnet 170 is exposed to the outside of the product, the influence on the installation space is minimal. .

The magnetic flux is generated in the magnet 170. When the magnetic flux generated from the magnet 170 leaks to the outside of the rotary cover 140, the peripheral devices are adversely affected by the leakage magnetic flux. And, since most of the external devices are located in the upper side of the axial direction of the rotary cover 140, peripheral devices are particularly affected by the magnetic flux leaking to the upper surface side of the rotary cover 140.

However, in the information input device according to the present embodiment, since the magnet 170 is magnetized in the radial direction, most of the magnetic flux leaks to the radially outer side of the magnet 170. Therefore, peripheral devices are less affected by magnetic flux.

As described above, since the magnet magnetized in the radial direction is used as the information input device according to the present invention, the outer diameter of the magnet can be reduced. Therefore, since the outer diameters of the substrate and the supporting member installed in the product can be reduced, the installation space of the product on which the information input device is installed can be reduced.

In addition, due to the magnet magnetized in the radial direction, the magnetic flux generated in the magnet leaks radially outward of the magnet. Thus, peripheral devices, most of which are located above the axial upper side of the magnet, are relatively less affected by the magnetic flux.

In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.

Claims

A substrate provided with a switching element and a hall sensor;

A support member fixed to the substrate;

A rotation cover rotatably installed on the support member and configured to press and drive the switching element;

A magnet having a plurality of poles magnetized in a radial direction and fixed to the rotating cover side;

And a means fixed to the support member to react with the magnet to generate a feeling of click.

The method of claim 1,

The means is provided with a cogging plate opposite the magnet,

The support member and the rotary cover is formed in a ring shape to form a concentric,

The inner circumferential surface side of the rotary cover is coupled to the support frame is rotatably coupled to the inner circumferential surface side to the outer circumferential surface side of the support member,

The magnet is installed on the outer peripheral surface side of the rotary cover, the cogging plate is an information input device installed on the inner peripheral surface side of the support member.

The method of claim 2,

A holder coupled to the rotary cover and the support frame is fixed to one surface of the rotary cover facing the support member,

One surface of the holder facing the support member is formed with a ring-shaped depression recessed to the other surface side,

The magnet is coupled to the outer circumferential surface of the depression,

The support member has a horizontal frame parallel to the substrate and a vertical frame extending from the inner circumferential surface of the horizontal frame toward the holder and positioned inside the recess.

The cogging plate is coupled to the outer peripheral surface of the vertical frame information input device.

The method of claim 3, wherein

The vertical frame of the support member is located on the inner peripheral surface side of the depression.