KR100727621B1 - A sliding opening and closing device for cellular phone - Google Patents

Abstract

A sliding opening and closing apparatus in a portable terminal is provided to minimize the displacement of a torsion spring by making the elastic force of the torsion spring applied to make a specific direction and generating braking force through a cam member. A sliding opening and closing apparatus in a portable terminal consists of the first plate(100), the second plate(110), a torsion spring(120), a slide shaft(130), case members(140,144), and a roller. The first plate(100) comprises a sliding surface(102) at which a plurality of concave parts(108) are formed. The second plate(110) is combined with the first plate(100) so as to move along the sliding surface. The torsion spring generates expansive force. The slide shaft is connected to one end of the torsion spring. The case members, fixed to the second plate, contain the torsion spring(120) and the slide shaft(130) inside, and guide the slide shaft(130) only to the sliding surface(102). The roller, combined to the slide shaft, rolls on the sliding surface.

Description

Sliding opening and closing device for mobile terminal {A SLIDING OPENING AND CLOSING DEVICE 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 a perspective view of a part of the opening and closing device shown in Figure 1 assembled;

3 is a perspective view of a state in which the switchgear shown in FIG.

4 is a cross-sectional view of the switchgear shown in FIG. 3;

FIG. 5 is a cross-sectional view of a state of use of the switching device shown in FIG.

<Explanation of symbols for main parts of drawing>

100: first plate 102: sliding surface

104: protrusion 106: shaft

108: main part 110: second plate

112: shaft holder 114: incision

120: torsion spring

122: ring 130: slide axis

132: locking portion 140: top cover

142: guide groove 144: lower cover

146: rivet 150: roller

152: central axis

The present invention relates to a sliding opening and closing device for a mobile terminal, and in particular, the elastic force of the torsion spring to act only in a specific direction, by generating a braking force through the cam member, to reduce the displacement of the torsion spring to reduce the life of the opening and closing device It is to extend.

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 is adopted in which one end is fixed to the main body and the other end is fixed to the sub body.

One end of the torsion spring is fixed to the main body and the other end is fixed to the sub body, so that the torsion spring is elastically applied over the entire moving distance of the sub body. 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, the object of the present invention is to allow the torsion spring elastic force to act only in a specific direction, to generate a braking force through the cam member, thereby reducing the displacement of the torsion spring To extend the life of the switchgear.

The present invention for achieving the above object, the first plate is formed with a stepped sliding surface higher than the periphery, the first plate formed with one or more recessed portion at a predetermined point of the sliding surface;

A second plate slidably coupled to the first plate to move along the sliding surface;

A torsion spring for generating an expansion force;

A slide shaft connected to one end of the torsion spring;

A case member accommodating the torsion spring and the slide shaft therein, guiding the slide shaft to flow only in the sliding surface direction, and fixed to the second plate; And

It is rotatably coupled to the slide axis to provide a sliding opening and closing device for a mobile terminal comprising a roller which is rolled on the sliding surface, coupled to the recess to generate a predetermined braking force.

The sliding surface may be formed to be inclined such that a central area protrudes toward the slide axis.

The second plate may be formed with a cutout matching the shape of the case member, and the case member may be inserted into and fixed to the cutout.

The case member may be provided with a guide groove for guiding the slide shaft to flow only to the sliding surface side.

The sliding surface is a pair is installed side by side at a predetermined interval, the slide shaft is provided with a pair to flow toward both sliding surfaces are respectively coupled to both ends of the torsion spring, each of the slide shaft is a respective roller It can be rotatably coupled.

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, FIG. 2 is a perspective view of a part of the opening and closing device shown in FIG. 1 assembled, and FIG. It is a perspective view of a state. 4 is a cross-sectional view of the switchgear shown in FIG. 3, and FIG. 5 is a cross-sectional view of a state of use of the switchgear shown in FIG. 4.

The opening and closing device shown in this drawing includes a first plate 100 having a stepped sliding surface 102 formed higher than a periphery, and at least one recess 108 formed at a predetermined point of the sliding surface 102; A second plate 110 slidably coupled to the first plate 100 to move along the sliding surface 102; A torsion spring 120 generating an expansion force; A slide shaft 130 connected to one end of the torsion spring 120; The case members 140 and 144 accommodate the torsion spring 120 and the slide shaft 130 therein, guide the slide shaft 130 to flow only in the sliding surface 102 direction, and are fixed to the second plate 110. ; And a roller 150 rotatably coupled to the slide shaft 130 to roll on the sliding surface 102 and coupled to the recess 108 to generate a predetermined braking force.

The first plate 100 and the second plate 110 are slidably coupled. This coupling scheme is disclosed in the prior art and is well known in the art.

For example, the shaft 106 is fixed to one side of the first plate 100 and the second plate 110 and the shaft holder 112 slidably coupled to the shaft 106 on the other side, and then the shaft ( 106 and the shaft holder 112 is coupled. In addition, there is a method of fixing the slit and the rib that are slidably coupled to each other on the first plate 100 and the second plate 110 so as to be coupled to each other.

The opening and closing device of the present embodiment may be implemented in various ways without being limited to a specific method in a method of slidably coupling the first plate 100 and the second plate 110.

When the opening and closing device is installed in the portable terminal, the first plate 100 is fixed to one side of the main body or the slide body of the portable terminal, the second plate 110 is fixed to the other side.

On the other hand, the recessed part 108 of the sliding surface 102 is formed one each on both end sides of the sliding surface 102. The recess 108 is for generating a predetermined braking force by holding the roller 150, for example, for generating a braking force in a closed state and an open state of the slide body of the portable terminal.

In addition, the sliding surface 102 is formed with a protrusion 104 in which the central region protrudes at a gentle inclination angle toward the slide axis 130. Therefore, when the roller 150 passes the protrusion 104 of the sliding surface 102, the torsion spring 120 is the most tensioned and the force is accumulated, and when the roller 150 passes the protrusion 104, the torsion spring 120 The second plate 110 is automatically moved by the elastic force of the.

When the slide body of the portable terminal is opened or closed by the structure of the sliding surface 102, the user only pushes to the inflection point of the sliding surface 102, and then the sliding operation is automatically performed.

If there is no protrusion 104 on the sliding surface 102, the user will have to push from beginning to end to open or close the slide body.

Rings 122 are formed at both ends of the torsion spring 120, and each ring 122 is coupled to a locking portion 132 formed at each slide shaft 130.

The case member consists of a combination of the upper cover 140 and the lower cover 144, the upper cover 140 and the lower cover 144 provides a space for the torsion spring 120 can flow.

In addition, the second plate 110 is formed with a cutout 114 corresponding to the shape of the case member, and the case member is inserted into the cutout 114 to be fixed. Therefore, the thickness of the switchgear can be minimized.

In addition, a guide groove 142 for guiding the slide shaft 130 to flow only toward the sliding surface 102 is formed in the case member.

Such a case member is fixed to the second plate 110 by a method such as rivet 146 coupling.

The sliding surface 102 is a pair is installed side by side at a predetermined interval, the slide shaft 130 is provided with a pair so as to flow toward both sliding surfaces 102 are coupled to both ends of the torsion spring 120, respectively, Each roller 150 is rotatably coupled to the slide shaft 130.

As the pair of slide shafts 130 are installed in this way, the pressing force applied to the sliding surfaces 102 on both sides is equal, thereby smoothly sliding in one direction in the coupling between the first plate 100 and the second plate 110. The operation is made.

The roller 150 is rotatably coupled to the slide shaft 130 by the rotation axis.

The first plate 100, the second plate 110, the case member, and the slide shaft 130 may be formed of metal or plastic injection molding.

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

Usually the elastic force of the torsion spring 120 is transmitted to the slide shaft 130 is emitted to the sliding surface 102 side. The guide groove 142 formed in the case member allows the slide shaft 130 to move only in the direction toward the sliding surface 102.

The roller 150 coupled to the slide shaft 130 in the closed state or the open state of the portable terminal is coupled to the recess 108 of the sliding surface 102 to generate a predetermined braking force. Therefore, the slide body of the portable terminal is maintained in the open state and closed state.

In this state, when the second plate 110 is pushed, the roller 150 moves off the recess 108 to travel the sliding surface 102.

Since the roller 150 rotates about the central axis 152 and moves along the sliding surface 102, friction with the sliding surface 102 hardly occurs.

If there is a protrusion 104 on the sliding surface 102, the elastic force of the torsion spring 120 acts in the direction of preventing the movement of the second plate 110 until the roller 150 reaches the inflection point of the protrusion 104. do.

However, when the roller 150 passes the inflection point of the inclination angle, the elastic force of the torsion spring 120 is pushed in the direction in which the second plate 110 moves. Therefore, after this, the movement of the second plate 110 is automatically performed.

The guide groove 142 formed in the case member during the movement of the second plate 110 allows the slide shaft 130 to move only in the direction toward the sliding surface 102.

When the roller 150 travels all the sliding surface 102 and is coupled to the recess 108 on the opposite side, a predetermined braking force is generated to maintain the slide body of the portable terminal in an open state or a closed state.

On the other hand, when the second plate 110 is pushed in the reverse direction to move the second plate 110 in the original direction, the operation opposite to the above operation is made.

As can be seen from this action, the elastic force of the torsion spring 120 always acts in one direction only, the elastic force is transmitted to the sliding surface 102 through the slide axis 130, the displacement of the torsion spring 120 is Less. Therefore, the torsion spring 120 does not degrade or disconnect even in prolonged use.

As described above, the opening and closing device of the present invention allows the elastic force of the torsion spring to act only in a specific direction, and generates a braking force through the cam member, thereby reducing the displacement of the torsion spring and extending the life of the opening and closing device. It can be effective.

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 (5)

A first plate having a stepped sliding surface higher than the periphery and having at least one recessed portion at a predetermined point of the sliding surface; A second plate slidably coupled to the first plate to move along the sliding surface; A torsion spring for generating an expansion force; A slide shaft connected to one end of the torsion spring; A case member accommodating the torsion spring and the slide shaft therein, guiding the slide shaft to flow only in the sliding surface direction, and fixed to the second plate; And And a roller rotatably coupled to the slide shaft to roll on the sliding surface and coupled to the recess to generate a predetermined braking force. The sliding opening and closing device of claim 1, wherein the sliding surface is formed to be inclined such that a central area protrudes toward the slide axis. The sliding opening and closing device for a portable terminal according to claim 1, wherein the second plate is formed with a cutout that matches the shape of the case member, and the case member is inserted into and fixed to the cutout. The sliding opening and closing device for a portable terminal according to claim 1, wherein the case member has a guide groove for guiding the slide shaft to flow only toward the sliding surface. The method according to any one of claims 1 to 4, wherein the sliding surface is a pair is installed side by side at a predetermined interval, The slide shaft is provided with a pair so as to flow toward both sliding surfaces are coupled to both ends of the torsion spring, Sliding opening and closing device for a mobile terminal, characterized in that each roller is rotatably coupled to each of the slide shaft.

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