KR100736108B1 - An opening and closing mechanism increased tension power for cellular phone - Google Patents

Abstract

An opening or closing device for a portable terminal which increases an elastic force is provided to enhance durability by using a tension spring, having stronger elastic force and better durability than a torsion spring, as a power source for closing or opening a sub body. An opening or closing device for a portable terminal which increases an elastic force comprises the first plate(10), the second plate(30), a fixed frame(40), a rotary lever(50), a tension spring(60) and a roller(70). The second plate is slidably combined with the first plate in a parallel state, and forms a cam profile where a recess and a slant surface are continued along a sliding direction. The fixed frame is fixed to the first plate. The rotary lever, combined such that the first end unit is rotated and hinged at the fixed frame, moves toward or gets away from the cam profile by a rotational operation of the second end unit. The tension spring makes the second end unit move toward the cam profile by making one end be fixed to the fixed frame and the other end be fixed to the rotary lever and generating a tension force. The roller rolls at the second end unit while being in contact with the cam profile.

Description

Switching device for mobile terminal with increased elasticity {AN OPENING AND CLOSING MECHANISM INCREASED TENSION POWER FOR CELLULAR PHONE}

1 is an exploded perspective view of an opening and closing device according to an embodiment of the present invention;

Figure 2 is an exploded perspective view of another angle of the opening and closing device shown in Figure 1,

3 and 4 is a perspective view of the main coupling portion of the opening and closing device shown in FIG.

Figure 5 is a perspective view of the coupled state of the opening and closing device shown in Figure 1,

6 to 9 are cross-sectional views of the mobile terminal shown in FIG.

<Explanation of symbols for main parts of drawing>

10: first plate 20: guide holder

22: slide rib 24: insert water

30: second plate 31: slide groove

32: first part 34: second part

36: slope 38: third main part

40: fixed frame 42: stopper

50: rotation lever 60: tension spring

70: roller 80: rivet

The present invention relates to an opening and closing device for a mobile terminal having increased elastic force, and more particularly, to increase elasticity and improve durability by using a tension spring as a power source for automatically opening or closing a sub body in a sliding type mobile terminal. .

As a sliding type terminal, a sliding type portable wireless terminal is disclosed in Utility Model Application No. 2003-0000136.

The terminal disclosed in this application is adapted to change the direction of the pressing force in the opening or closing direction with respect to the guide means for guiding the sub body on the main body and the predetermined sliding position of the sub body between the sub body and the main body. It includes at least one elastic means is installed. And the elastic body can maintain the maximum open position or the maximum closed position without a separate stopper during the fully open or closed operation.

As such elastic means, a torsion spring, one end of which is fixed to the main body and the other end of which is fixed to the subbody, is adopted.

This torsion spring is fixed to the main body and the other end is fixed to the sub body, the elasticity of the torsion spring is applied over the entire moving distance of the sub body, the torsion spring is greatly tensioned and stretched. Therefore, while the operation is large for the smooth operation of the torsion spring, the torsion spring with less elastic force is used, and two torsion springs are installed to compensate for the insufficient elastic force.

However, the torsion spring has a problem in that the displacement width is large due to its characteristics, and thus the normal function is lost or disconnected early due to the accumulation of fatigue due to the repeated operation.

The present invention has been made to solve the above problems, an object of the present invention is a power source for automatically opening or closing the sub body in a sliding type mobile terminal is a tension spring having a stronger elastic force than the torsion spring and excellent durability. By using it, it is for increasing the elastic force of the switchgear and improving durability.

The present invention for achieving the above object, the first plate;

A second plate slidably coupled in a state parallel to the first plate and having a cam profile in which recesses and slopes are continuous in a sliding direction;

A fixed frame fixed to the first plate;

A rotation lever having a first end coupled to the fixed frame by hinge rotation, and a second end proximate and detached toward the cam profile by a rotation operation;

At least one tension spring for proximate the second end to the cam profile by having one end fixed to the fixed frame and the other end fixed to the rotation lever to generate a tension force; And

The second end portion is provided with a slide opening and closing device for a portable terminal to increase the elastic force comprising a roller which rotates in contact with the cam profile.

The fixing frame may protrude from a stopper for preventing the rotation lever from being rotated by a tension force of the tension spring by more than a predetermined angle.

Slide grooves are formed on both sides of one of the first plate and the second plate along a moving direction of the second plate, and guide holders formed with slide ribs slidably coupled to the slide grooves on the other both sides thereof. Can be.

The cam profile and the rotation lever may be configured in a pair of symmetrical.

Best Mode for Carrying Out the Invention A preferred embodiment of the opening and closing device of the present invention will be described with the accompanying drawings.

1 is an exploded perspective view of an opening and closing device according to an embodiment of the present invention, Figure 2 is another perspective exploded perspective view of the opening and closing device shown in FIG. 3 and 4 are perspective views of main parts of the switchgear shown in FIG. 1, and FIG. 5 is a perspective view of the coupled state of the switchgear shown in FIG. 1.

The opening and closing device for slidably coupling the sub body of the mobile terminal from the main body includes: a first plate 10 fixed to the sub body; A second plate 30 fixed to the main body and slidably coupled in a state parallel to the first plate 10 and having a cam profile in which recesses and inclined surfaces 36 are continuous along the sliding direction; A fixed frame 40 fixed to the first plate 10; A rotation lever 50 coupled to the first end by a hinge frame to the fixed frame 40 and having a second end proximate and detached toward the cam profile by a rotation operation; A plurality of tension springs (60) for proximate the second end to the cam profile by having one end fixed to the fixed frame (40) and the other end fixed to the rotary lever (50) to generate a tensile force; And a roller 70 that rotates in contact with the cam profile at the second end.

The fixing frame 40 protrudes and forms a stopper 42 for preventing the rotation lever 50 from being rotated by a tension force of the tension spring 60 by more than a predetermined angle.

The cam profile and the rotation lever 50 constitute a pair of symmetrical pairs. Accordingly, three tension springs 60 are fixed to both sides, and rollers 70 are also provided at the second ends of the respective rotation levers 50.

The roller 70 is rotatably coupled to the rotary lever 50 using the rivet 80. The roller 70 is in contact rotation with the cam profile when the second plate 30 moves to reduce friction.

The cam profile of the second plate 30 is formed with a first recess 32 in the center region, a hill-shaped slope 36 is formed on one side of the first recess 32, the end of the slope 36 The second recessed portion 34 is formed. The third recess 38 is formed on the other side of the first recess 32.

The state in which the roller 70 is coupled to the first recess 32 is a state in which the sub body is closed to the main body, and in the state in which the roller 70 is coupled to the second recess 34, the sub body is removed from the main body. The open state and the state in which the roller 70 is coupled to the third recessed portion 38 are the state in which the sub body is opened downward from the main body.

When the roller 70 climbs the inclined surface 36, a force that causes the elastic force of the tension spring 60 to obstruct the movement of the second plate 30 is generated, and the roller 70 is the inflection point of the inclined surface 36. When falling downhill past the elastic force of the tension spring (60) to push the second plate 30 to move automatically.

Slide grooves 31 are formed on both sides of the second plate 30 along the moving direction of the second plate 30, and slides slidably coupled to the slide grooves 31 on both side surfaces of the first plate 10. The guide holder 20 in which the rib 22 is formed is fixed.

The guide holder 20 is fixed to the first plate 10 with a screw. The guide holder 20 is made of a plastic injection molding with low friction, and supplements the metal insert 24 therein to improve rigidity.

The tension spring 60, which is an elastic means used in the present embodiment, is less durable than conventional torsion springs and has excellent durability, and increases elastic force by using a plurality of tension springs 60.

Hereinafter, the operation of the switchgear having the above configuration will be described.

6 to 9 are cross-sectional views of the mobile terminal shown in FIG.

The state in which the sub body is closed to the main body is maintained in a state in which the tension spring 60 pulls the rotation lever 50 so that the roller 70 is coupled to the first recess 32 as shown in FIG. 6.

When the sub body is pushed down as shown in FIG. 7, the roller 70 is coupled to the second recess 34 by moving away from the first recess 32. Here, the roller 70 generates the stopping force by the elastic force of the tension spring 60.

On the other hand, when the sub body is pushed up as shown in FIG. 8 in the initial state, the roller 70 moves out of the first recessed portion 32 and passes through the inclined surface 36. When the roller 70 climbs the uphill of the inclined surface 36, The second plate 30 is automatically opened by the elastic force of the tension spring 60 after being resisted by the elastic force of the tension spring 60 but passing through the inflection point.

And when the roller 70 is coupled to the second recess 34 as shown in Figure 9, the braking force is generated by the elastic force of the tension spring (60).

As described above, the opening and closing device of the present invention has an effect of increasing elasticity and improving durability of the opening and closing device by using a tension spring having high elasticity and excellent durability as a power source for automatically opening or closing the sub body. There is.

The present invention has been described above by way of specific embodiments, but the present invention is not limited to the above-described embodiments, and those skilled in the art without departing from the gist of the present invention claimed in the claims. Anyone can make a variety of variations.

Claims (4)

First plate; A second plate slidably coupled in a state parallel to the first plate and having a cam profile in which recesses and slopes are continuous in a sliding direction; A fixed frame fixed to the first plate; A rotation lever having a first end coupled to the fixed frame by hinge rotation, and a second end proximate and detached toward the cam profile by a rotation operation; At least one tension spring for proximate the second end to the cam profile by having one end fixed to the fixed frame and the other end fixed to the rotation lever to generate a tension force; And Slider opening and closing device for a portable terminal to increase the elastic force formed in the second end comprises a roller which rotates in contact with the cam profile. The slide opening and closing device for a mobile terminal according to claim 1, wherein the fixing frame protrudes a stopper for preventing the rotation lever from being rotated by a tension force of the tension spring by more than a predetermined angle. The slide rib of claim 1, wherein a slide groove is formed on both sides of one of the first plate and the second plate along a moving direction of the second plate, and slide ribs slidably coupled to the slide groove on the other both sides. Slide opening and closing device for a mobile terminal to increase the elastic force, characterized in that the guide holder is fixed. The method according to any one of claims 1 to 3, The cam profile and the rotary lever is a slide opening and closing device for increasing the elastic force, characterized in that the pair consisting of a symmetrical pair.

Images