KR20090041937A

KR20090041937A - Information input unit

Info

Publication number: KR20090041937A
Application number: KR1020070107741A
Authority: KR
Inventors: 한진석
Original assignee: 엘지이노텍 주식회사
Priority date: 2007-10-25
Filing date: 2007-10-25
Publication date: 2009-04-29

Abstract

An information input device for an electronic device is disclosed. Since the information input device is provided with a sensing unit inside the depression formed in the sliding member, the sensing unit does not protrude outward of the sliding member. Therefore, the space between the substrate and the sliding member can be reduced by the thickness corresponding to the thickness of the portion to be reduced, thereby making it thin.

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: fixing member

130: sliding member 140: elastic member

150: sensing member

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

Today, electronic devices such as mobile communication devices have a button type information input device that generates a signal by a push operation, a wheel type information input device that generates a signal by a rotation operation, or a sliding type information that generates a signal by a sliding operation. An input device or the like is installed.

A conventional sliding 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, a substrate 11 provided with a sensor 11a, a switching element, and the like is provided. An approximately ring-shaped fixing member 13 is fixed to the substrate 11, and a circular sliding member 15 is slidably installed inside the fixing member 13. The sliding member 15 is slid in the radial direction with respect to the center.

At this time, the inner circumferential surface side of the fixing member 13 and the outer circumferential surface side of the sliding member 15 are disposed to overlap each other and have a ring shape to face the inner circumferential surface of the fixing member 13 and the outer circumferential surface of the sliding member 15. Supporting walls 13a and 15a are formed to protrude from each other.

In addition, one end side and the other end side of the spring 17 are supported by the support wall 13a of the fixing member 13 and the support wall 15a of the sliding member 15, thereby sliding the sliding member 15 for sliding movement. Return to the original state. At this time, a plurality of springs 17 are radially installed on the basis of the center of the sliding member 15.

A sensing member 19, such as a magnet, is fixed to the lower surface of the sliding member 15 to slide integrally with the sliding member 15, and the sensor 11a detects the position of the sensing member 19 to control the product. To send.

In the conventional information input device as described above, since the sensing member 19 is coupled to the lower surface of the sliding member 15 and protrudes downward, the substrate 11 and the sliding member 15 are as thick as the sensing member 19. Need more space between) As a result, there is a disadvantage in that the thickness of the information input device becomes thick.

The present invention has been made to solve the above problems of the prior art, an object of the present invention to provide a thin information input device.

According to an aspect of the present invention, there is provided an information input device comprising: a substrate provided with a sensor and a switching element; A fixing member fixed to the substrate; A sliding member slidably installed in the fixing member to drive the switching element, and a sliding member having a depression recessed toward the other surface on one surface facing the substrate; An elastic member having one side supported by the fixing member and the other side supported by the sliding member to return the sliding member to an initial state; It is coupled to the inside of the depression comprises a member to be moved to move integrally with the sliding member, the position change of the sensor is detected by the sensor.

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 shown, the information input device according to the present embodiment has a substrate 110. A plurality of components such as a sensor 112 and a switching device (not shown) are installed on one surface of the substrate 110 in the vertical direction.

Hereinafter, one surface in the vertical direction of the substrate 110 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 fixing member 120 is installed on the upper surface of the substrate 110. The fixing member 120 has a ring-shaped outer wall 121 having a lower end surface fixed to the substrate 110, and a ring-shaped inner extension frame extending inwardly from an upper end surface of the outer wall 121. 123 and a ring-shaped support wall 125 extending downward from the inner circumferential surface of the inner extension frame 123. At this time, the bottom surface of the support wall 125 is positioned above the substrate 110 without contacting the substrate 110.

In the interior of the fixing member 120, a disc-shaped sliding member 130 is slidably installed. The sliding member 130 is slidably installed in a radial direction based on its center.

The sliding member 130 is formed in a circular shape having a predetermined thickness and is formed to extend outward from the lower portion of the outer circumferential surface of the body 131 and the outer circumferential surface of the support wall 125 to face the inner extension frame 123. It has a ring-shaped outer extension frame 133 and a ring-shaped support wall 135 extending upward from the outer peripheral surface of the outer extension frame 133. At this time, the support wall 135 of the sliding member 130 is disposed in a form surrounding the support wall 125 of the fixing member 120, and faces the support wall 125 of the fixing member 120.

In the space formed by the inner extension frame 123 and the outer extension frame 133, an elastic member 140, such as a spring for returning the sliding member 130 to the initial state, is installed. One side and the other side of the elastic member 140 is supported by the support wall 125 of the fixing member 120 and the support wall 135 of the sliding member 130, respectively. In addition, a plurality of elastic members 140 are radially installed based on the center of the sliding member 130.

The sensing member 150, such as a magnet or a capacitor, is coupled to the bottom surface of the sliding member 130 facing the substrate 110. When the user slides the sliding member 130 with a finger, the sensing member 150 also moves together with the sliding member 130, and the sensor 112 detects a change in position of the sensing member 150. The control unit of the product transmits.

In detail, when the sliding member 130 and the sensing member 150 slide by a user's operation, the sensor 112 detects a magnetic field change or a change in electric charge of the sensing member 150, thereby sliding the sliding member 130. ) Position is detected. Then, in the control circuit of the product connected to the substrate 110, according to the position of the sliding member 130, by moving the scroll bar of the display portion of the product to specify the desired picture or symbol. Then, the switching element is turned on by the pressing of the sliding member 130, the signal of the switching element is output to the control circuit to execute the specified picture or symbol. The sliding sliding member 130 is always returned to the center of the fixed member 120 in the initial state by the elastic member 140.

The information input device according to the present embodiment is thinned by installing the sensing member 150 inside the sliding member 130.

In detail, the bottom surface of the sliding member 130 facing the substrate 110 is formed with a recessed portion 130a recessed toward the upper surface side, and the sensing member 150 is installed in the recessed portion 133. Then, since the sensing unit 150 does not protrude to the lower side of the sliding member 130, the distance between the substrate 110 and the sliding member 130 decreases as much as the thickness of the sensing unit 150.

As described above, in the information input device according to the present invention, since the sensing unit is installed inside the recess formed in the sliding member, the sensing unit does not protrude to the outside of the sliding member. Therefore, the space between the substrate and the sliding member can be reduced by the thickness corresponding to the thickness of the portion to be reduced, thereby making it thin.

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 on which a sensor and a switching element are installed;

A fixing member fixed to the substrate;

A sliding member slidably installed in the fixing member to drive the switching element, and a sliding member having a depression recessed toward the other surface on one surface facing the substrate;

An elastic member having one side supported by the fixing member and the other side supported by the sliding member to return the sliding member to an initial state;

And a sensing member coupled to the recess and integrally moving with the sliding member and sensing a change in its position by the sensor.