KR20100026521A - Slide actuator assemblies with circle springs and band springs for portable communications terminals - Google Patents

Abstract

Disclosed is a slide actuator for a portable communication terminal having a first and a second body. The slide actuator includes a housing having a first end, a second end, a centerline across the first end and the second end, and a center point midway between the first end and the second end along the centerline. . The slide actuator also includes a first resilient member having a first attachment point for rotatably connecting to the first body and a second connection point slidably coupled to the first end of the housing. The slide actuator further includes a second elastic member having a third connection point for rotatably coupling to the second body and a fourth connection point slidably coupled to the second end of the housing. The slide actuator includes a biasing element coupled to the housing about a center point. The bias element provides a biasing force against movement of the second and fourth connection points along the centerline toward the center point.

Description

SLID ACTUATOR ASSEMBLIES WITH CIRCLE SPRINGS AND BAND SPRINGS FOR PORTABLE COMMUNICATIONS TERMINALS}

The present invention relates to a slide actuator assembly for a mobile communication terminal.

Portable wireless communication terminals (eg, mobile phones with digital cameras, etc.) are becoming more and more popular. In addition to the increasing popularity, the individual preferences and tastes of users related to the function and operation of the device are also increasing, such as the number of users and various user preferences regarding the manner of opening and closing the device.

To meet the needs of these users, various types of mobile communication terminals have been developed, such as a bar type, a flip type, a flip-up type, and a folder type. Among these types, the folder type is widely used. The folder type terminal has a space sufficient to accommodate a wide LCD display module while being folded for good portability into a compact state.

Also, a slider type terminal has been introduced. The slider type terminal may be equipped with an LCD display module having a size similar to that of an LCD display module normally provided in a folder type terminal. The slider mechanism may contribute to the size reduction or miniaturization of the portable communication terminal to which it is incorporated. Conventional slider type terminals have a sub-body or cover that can be slidably opened and closed on the body.

As an example, an exploded perspective view of a conventional slide assembly for a portable communication terminal is shown in FIG. In this example, the first body 10 and the second body 20 are mutually coupled to slide back and forth along each other, relative to each other or relative to each other. The first body 10 and the second body 20 are coupled to the torsion springs 31a and 31b. The second body 20 is formed to slide open and close automatically by the elastic force and the biasing force applied by the torsion springs 31a and 31b. When the second body 20 slides by a sufficiently large distance with respect to the first body 10, the torsion springs 31a and 31b are located between the first body 10 and the second body 20, so that the torsion The springs 31a and 31b are exposed to the outside.

In other conventional slide type portable communication terminals, curved leaf springs or helical springs can be used as the slide actuator. An example of a conventional helical spring 40 is shown in FIG. In this example, the helical spring 40 has first and second ends 50, 60. The first end 50 of the spring may be rotatably coupled to the case of the body, and the second end 60 of the spring may be rotatably coupled to the case of the slider. The helical spring 40 also includes an elastic portion 70 positioned between the first end 50 and the second end 60. The elastic part 70 is arcuate or curved such that the spring 40 has the maximum elastic energy about the middle point of the elastic part 70.

When the spiral spring 40 is rotatably coupled to the main body and the slider, as the user slides the mobile communication terminal by sliding the slider between the open position and the closed position with respect to the main body, the spiral spring 40 moves to the first position. It can rotate between 80a (FIG. 3) and second position 80c (FIG. 3). When the slider is moved such that the helical spring 40 is in the intermediate position 80b between the first position 80a and the second position 80c, the elastic force of the elastic portion 70 moves the slider to the first position 80a. ), Or pushes or biases toward either of) or the second position 80c. Therefore, when the user slides the slider with respect to the main body from the closed position to the intermediate position, the spring 40 applies the biasing force to the slider to move the slide to the open position semi-automatically.

When the slider is moved to the closed or open position, the maximum load can be applied about the center of the elastic part 70 of the helical spring 40, in particular the curved or arched part of the elastic part 70. The slider can continuously move or slide to open and close the mobile communication terminal. Therefore, there is a possibility that the maximum load is continuously applied to the helical spring 40 and the elastic portion 70 is broken.

One exemplary embodiment of the present invention discloses a portable communication terminal having a first body and a second body. The second body can slide relative to the first body. The slide actuator has a first end, a second end, a centerline across the first and second ends, and a center point located on the centerline near a midpoint between the first and second ends. The slide actuator also includes a first elastic member having a first attachment point for rotatably connected to the first body and a second connection point slidably coupled to the first end of the housing. The slide actuator further includes a second elastic member having a third connection point for rotatably connected to the second body and a fourth connection point slidably coupled to the second end of the housing. The slide actuator also has a biasing component that couples to the housing about a center point. The bias element provides a biasing force against moving the second connection point and the fourth connection point along the center line toward the center point.

According to another exemplary embodiment of the present invention, a slide actuator for a portable communication terminal having a first body and a second body is disclosed. The second body is slidably moveable relative to the first body. The slide actuator has a housing having a guide channel transverse to a first direction and a bias element coupled to the first guide and the second guide. The first and second guides are coupled to the housing and slideable within the guide channel. In addition, the slide actuator has a first elastic member and a second elastic member. The first elastic member has a connection point on the first end to be rotatably connected to the first body. The second end of the first elastic member opposite the first end is coupled to a third guide. The third guide is coupled to the housing adjacent one of the first and second guides and is slidable within the guide channel. The second elastic member has a connection point on the first end to be rotatably connected with respect to the second body. The second end of the second elastic member opposite the first end is coupled to a fourth guide. The fourth guide is slidably movable within the guide channel and is coupled to the housing adjacent to the other of the first and second guides and against the third guide.

According to yet another embodiment, a slide actuator for a portable communication terminal having a second body that is movable relative to a first body is disclosed. The actuator includes a housing having a first connector, a second connector, and a biasing element. The first connector is formed to be attached to the first body and the housing. The second connector is formed to be attached to the second body and the housing. The first and second connectors are formed to extend or reduce the slide actuator as the second body slides relative to the first body. The biasing element is coupled to generate a biasing force against the reduction of the slide actuator.

Other areas of application will be apparent from the description provided herein. The description and specific examples of the present solution are for illustrative purposes only and are not intended to limit the scope of the invention.

In order to facilitate a thorough understanding of embodiments of the present invention, numerous specific details are set forth in the following description, such as examples of specific components, devices, and methods. It will be apparent to those skilled in the art that these specific details need not be employed and should not be inferred as limiting the scope of the invention. When developing to be implemented in practice, many specific decisions related to implementation must be made, such as satisfying system- or project-related requirements. Such development efforts can be complex and time consuming, but are routine tasks related to design, manufacture and production.

4 illustrates a slide actuator 100 of a mobile communication terminal according to an exemplary embodiment of the present invention in three different positions A, B, and C, which indicate movement when the mobile communication terminal is slid open or closed. . As shown in FIG. 4, the slide actuator includes a first elastic member 102 and a second elastic member 104. The first elastic member 102 of the housing 110 of the slide actuator 100 and the first connection point 106 (eg, through-holes, openings, etc.) for rotatably attached to the first body of the mobile communication terminal. It has a second connection point 108 for coupling to the first end 109. The second elastic member 104 is a third connection point 112 for rotatably attached to the second body of the mobile communication terminal and the fourth connection point 114 for coupling to the second end 116 of the housing 110. It is provided. The elastic members 102 and 104 are each shown with three band springs, each of which is generally shaped like the letter "V". However, in other embodiments the elastic members 102 and 104 may be of different shapes, or may be provided with three or more or less spring elements (eg, single element band springs, etc.), or springs other than band springs. It may be, or may be other suitable elastic member.

The housing 110 has a centerline D-D across the housing between the first end 109 and the second end 116. It also has a center point 118 located near the midpoint between the first end 109 and the second end 116 of the housing 110 along the center line D-D. The bias element 120 is coupled to the housing 110 about the center point 118. In some embodiments, biasing component 120 may be an annular spring or other suitable biasing element.

The housing 110 has a guide channel 122 along the centerline D-D. The bias element 120 and the elastic members 102 and 104 are coupled to the housing 110 through the guide 124. More specifically, the second connection point 108 is coupled to the first guide 124a, and the fourth connection point 114 is coupled to the second guide 124b. The bias element 120 is coupled between the third guide 124c and the fourth guide 124d. The guide 124 is coupled to the guide channel 122 and can slide along it.

Hereinafter, the operation of the slide actuator 100 will be described with reference to FIGS. 5A to 6C.

5A and 5B, as described above, the slide actuator 100 may be used to assist opening and closing movement of a mobile communication terminal such as the mobile phone 160. The illustrated mobile phone 160 has a body 162 and a slider body 164. The main body 162 and the slider body 164 are electrically connected, for example, by a flexible circuit board or the like for operation. In addition, the slider body 164 is coupled to the main body 162 to be movable upward and downward relative to the main body 162 (eg, slide movement, etc.) for opening and closing of the mobile phone 160. A track system (eg, male-male track system, etc.) may be provided to couple the slider body 164 to the body 162 and to achieve smooth movement between the slider body 164 and the body 162. Can be. Other systems may be used to couple the slider body 164 to the body 162 within the scope of the present invention. Further, in another exemplary embodiment, the mobile communication terminal may include a slider body formed of an integral part of the main body, a slider body formed separately from the main body, and fixed to the main body.

As illustrated in FIGS. 5A and 5B, the slider body 164 of the exemplary mobile phone 160 is provided with an external screen 166 for displaying other operations of the mobile phone 160. In addition, the body 162 of the mobile phone 160 is provided with a keypad on the surface 168 to perform various functions of the mobile phone 160. When mobile phone 160 is in the closed position (see FIG. 5A), keypad (and surface 168) is covered by slider body 164 to avoid inadvertent contact or actuation. In order to expose the keypad (and surface) for use, the mobile phone 160 can be moved to an open position (see FIG. 5B) by sliding the slider body 164 upward (shown in FIGS. 5A and 5B).

As used herein, the terms "body" and "slider body" refer to and mean a stop portion and a sliding portion of the portable communication terminal, respectively, when the user opens and closes the terminal. However, the user may keep the slider body stationary and move the body relatively from the slider body to open and close the terminal. Alternatively, the user may open and close the terminal by moving both the main body and the slider body relative to each other. Accordingly, the particular manner and change that the user has chosen to open and close the terminal does not limit the scope of the invention.

6A-6C, the slide actuator 100 is positioned between the slider body 164 and the body 162 of the cellular phone 160 assembled for operation. The positions of the slide actuator 100 shown in FIGS. 6A, 6B and 6C correspond to positions A, B and C of FIG. 4, respectively. In these drawings, the main body 162 and the slider body 164 are shown in phantom to illustrate the position and movement of the slide actuator 100 during the opening and closing operation of the mobile phone 160. The first connection point 106 of the slide actuator 100 is coupled to an upward facing surface of the body 162 (eg, a surface facing away from the figures in FIGS. 6A-6C, etc.) and a third connection point of the slide actuator 100. 112 is coupled to a downward facing surface of the slider body 164 (eg, a surface facing inward in FIGS. 6A-6C, etc.). Fasteners (not shown) may be used to pivotally couple the elastic members 102 and 104 to the body and the slider bodies 162 and 164 through their respective connection points 106 and 112. This pivotally or rotatably couples the first elastic member 102 to the body 162, but restrains relative translation (eg, out of motion, etc.) relative to the body 162. It also pivotally or rotatably couples the second elastic member 104 to the slider body 164, but restrains relative translational movement (eg, out of motion, etc.) relative to the slider body 164. Those skilled in the art will appreciate that the elastic members 102 and 104 may be formed by connecting the respective bodies (not shown) through the connection points 106 and 112 using a variety of techniques other than those disclosed herein, such as interference fit connections, snap-insert connections, bearing connections, and the like. It will be appreciated that it may be coupled to 162, 164).

6A-6C, the operation of the slide actuator 100 to assist the mobile phone 160 to move between the closed position (see FIG. 6A) and the open position (see FIG. 6C) will be described.

As shown in the A position of FIGS. 6A and 4, when the mobile phone 160 is in the closed position, the slide actuator 100 is horizontal with the first connection point 106 positioned generally higher than the third connection point 112. Oriented obliquely with respect to. In this position, the elastic members 102 and 104 and the bias element 120 are generally in a resting state (eg, in a relaxed state, in a state of least tensile force, in an unextended state, in an unextended length, etc.), but with a slider There is a tendency to resist upward movement relative to body 162 of body 164 (eg, movement of slider body 164 to open mobile phone 160, etc.). Thus, the slide actuator 100 operates to keep the mobile phone 160 closed.

In order to open the mobile phone 160, the user moves (eg, slides) the slider body 164 upward relative to the main body 152 in the direction indicated by the arrow 170 of FIGS. 6B and 6C. Let's do it. This moves the third connection point 112 of the slide actuator 100 (coupled to the slider body 164) generally upwards (shown in FIGS. 6A-6C). As the third connection point 112 moves, the slide actuator 100 rotates counterclockwise about the first connection point 106 and the third connection point 112. In addition, the linear upward movement of the third connection point 112 reduces the distance between the first connection point 106 and the third connection point 112. The first and second elastic members 102 and 104 are pressed toward the center point 118 of the housing 110 and start to contract (usually deformed) in a direction orthogonal to the center line D-D of the housing 110. The elastic force due to deformation of the elastic members 102 and 104 slides the first guide 124a and the second guide 124b along the guide channel 122 toward the center point 118 of the housing 110. . The bias element 120 resists the movement of the first and second guides 124a and 124b along the guide channel 122 toward the center point 118 through the third and fourth guides 124c and 124d. Provides power.

When the user continuously moves the slider body 164 upward, the first and second elastic members 102 and 104 continue to contract in a direction orthogonal to the center line D-D of the housing 110. In addition, the first guide 124a and the second guide 124b are forcibly slid along the guide channel 122 toward the center point 118, and the bias element 120 moves toward the center point 118. And provide a biasing force against movement of the second guides 124a and 124b. Tensile forces, biasing forces, elastic forces, and the like, which resist upward movement of the slider body 164, are developed in the first and second elastic members 102 and 104 and the bias element 120. At this time, when the user releases the slider body 164, the slide actuator 100 moves the slider body 164 downward and the closed position (bias element 120 and the elastic members 102 and 104 of the mobile phone 160) is idle. Position) to actuate the slider body 164 to provide tension to automatically squeeze, bias, or move.

The user may continue to move the slider upwards above the slider body 164 until the mobile phone 160 reaches an exemplary intermediate transient position (B position in FIGS. 6B and 4) between the closed and open positions. . Here, the first and third connection points 106 and 112 of the first and second elastic members 102 and 104 are generally vertically arranged. (I.e., as shown in FIG. 6B, they are generally located at the same vertical height.) Also, here, between the first and third connection points 106 and 112, the third and fourth guides 124c and 124d. Spacing distance is minimal between the first and third connecting points 106 and 112 and the first and second guides 124a and 124b, respectively. In both the third and fourth guides 124c and 124d, the center point of the housing 110 is applied to the first and second elastic members 102 and 104 by a force applied to the first and second guides 124a and 124b. Force is directed toward 118). The first and second elastic members 102 and 104 and the bias element 120 have a maximum compressive force. (Also, it has maximum tensile force.)

In the intermediate position above, the slide actuator 100 is at the neutral turning point. Tensile forces of the bias element 120 and the first and second elastic members 102, 104 are connected to the body 162 of the first connection point 106 and to the slider body 164 of the third connection point 112. The connection is largely offset evenly. Thus, the force to close cell phone 160 is generally balanced with the force to open cell phone 160. The slide actuator 100 generally does not press the slider body 164 to face upward to open the mobile phone 160 or downward to close the mobile phone 160.

When the mobile phone 160 is in the intermediate position, the additional upward movement of the slider body 164 moves the slide actuator 100 away from the neutral, turning point and generally opens the mobile phone 160 automatically. In particular, the third connection point 112 moves upward beyond the first connection point 106 so that the bond between the body 162 and the slider body 164 no longer cancels the tensile force evenly. Thus, the bias element 120 and the first and second elastic members 102, 104 expand (return to no deformation). The guide 124 is forced by the biasing element 120 to slide toward the first and second ends 109, 116 of the housing 110 away from the center point. This acts to automatically push the slider body 164 upward relative to the body 162 (even if the user no longer applies an opening force) and to move the mobile phone 160 to its open position (eg, FIG. 6C). In other words, the biasing element 120 and the first and second elastic members 102 and 104 may be used to automatically press, bias or move the slider body 164 relatively upward relative to the body 162. The inflation acts so that a tension force is transmitted from the slide actuator 100 to the slider body 164.

In addition, when the mobile phone 160 is in an intermediate position, the downward movement of the slider body 164 (for example, downward movement of the slider body 164 by the user) causes the slide actuator 100 to be moved at a neutral turning point. It will automatically close the mobile phone 160. In particular, the third connection point 112 moves downward below the first connection point, such that the bond between the body 162 and the slider body 164 no longer offsets the tensile force uniformly. Thus, the bias element 120 and the first and second elastic members 102, 104 expand (return to no deformation). The guide 124 is forced to slide toward the first and second ends 109, 116 of the housing 110 away from the center point by the bias element 120. This works to automatically push the slider body 164 downward against the body 162 (even if the user no longer applies a closing force) and to move the mobile phone 160 to its closed position (eg, FIG. 6A). In other words, the biasing element 120 and the first and second elastic members 102 and 104 may be used to automatically press, bias or move the slider body 164 relative to the body 162 downward. The inflation acts so that a tension force is transmitted from the slide actuator 100 to the slider body 164.

6C and 4, when the mobile phone is in the open position, the slide actuator 100 is oriented obliquely with respect to the horizontal with the third connection point 112 positioned substantially higher than the first connection point 106. do. In this position, the elastic members 102 and 104 and the bias element 120 are generally at rest (e.g., in a relaxed state, in a state of minimum tensile force, in an unextended or unexpanded length, etc.), but with a slider body ( There is a tendency to resist downward movement relative to body 162 of 164 (eg, movement of slider body 164 to close cell phone 160, etc.). Thus, the slide actuator 100 operates to hold the mobile phone 160 in the open position.

In order to close the mobile phone 160, the user can move the slider body 164 downward relative to the body 162. This operation is substantially similar to the opening operation of the mobile phone 160 described above and will not be described in further detail.

In particular, in the slide actuator according to the invention, for example, at position B, the maximum load is distributed on the components across four points, for example on both sides of the bias element 120 and on each elastic member 102, 104. Accordingly, the slide actuator according to the present invention allows the mobile communication terminal to be opened and closed stably. The slide actuators disclosed herein can be manufactured in a comparatively uncomplicated and thin structure. In addition, the durability of the slide actuator disclosed herein can be improved as compared to known actuators because fatigue due to deformation is weakened.

As used herein, terms such as "top", "bottom", "inside", "outside", "inward", "outward", and the like refer to the location of each element as shown in the accompanying drawings, It is not necessarily limited to such a location. As used herein, terms such as "first" and "second" and other ordinal terms do not imply order or order unless clearly indicated by the context.

In introducing elements or features and example embodiments, a modifier such as "above" means that there is one or more such elements or features. The terms "comprising", "including" and "having" are intended to be inclusive and mean that there may be additional elements or features in addition to those specifically mentioned. It should be further understood that the method steps, processes and actions described herein are not necessarily inferred that they must be performed in the particular order discussed or illustrated unless specifically identified as the order of execution. It should also be understood that additional or alternative steps may be employed.

The foregoing description of the embodiments of the invention has been presented for the purposes of illustration and description, and is not intended to be exhaustive or to limit the invention. Individual elements or features of a particular embodiment, although not specifically shown or described, are not limited to that particular embodiment and, where applicable, are compatible and can be used in the selected embodiment.

1 is an exploded view showing a slider mechanism for a conventional mobile communication terminal,

Figure 2 is a perspective view showing a spiral spring slide actuator for a conventional mobile communication terminal,

FIG. 3 is a view showing a conventional spiral spring slide actuator shown in FIG. 2 at three different positions showing its movement when opening and closing a mobile communication terminal.

4 is a view illustrating a slide actuator according to an exemplary embodiment of the present invention in three different positions according to opening and closing of a mobile communication terminal;

5A is a plan view of an exemplary portable communication terminal incorporating the slide actuator of FIG. 4 and in a closed position;

5B is a plan view similar to FIG. 5A with the mobile communication terminal in its open position;

FIG. 6A is an enlarged plan view similar to FIG. 5A showing an exemplary position of the slide actuator of the mobile communication terminal when the mobile communication terminal is in the closed position and the mobile communication terminal being shown in phantom lines; FIG.

FIG. 6B is a plan view similar to FIG. 5A showing an exemplary position of the slide actuator within the mobile communication terminal when the mobile communication terminal is partially intermediate between the closed and open positions; FIG.

FIG. 6C is a plan view similar to FIG. 5A showing an exemplary position of the slide actuator within the mobile communication terminal when the mobile communication terminal is in the open position;

<Description of main parts of drawing>

100: slide actuator

102: first elastic member

104: second elastic member

106: first contact point

108: second contact

110: housing

109: first end of the housing

116: second end of the housing

112: third contact

114: fourth contact

120: bias element

122: guide channel

124a, 124b, 124c, 124d: guide

160: mobile communication terminal

162: main body

164: slider body

Claims (21)

A slide actuator for a mobile communication terminal having a first body and a second body slidably movable relative to the first body, A housing having a first end, a second end, a centerline intersecting between the first end and the second end, and a center point intermediate the first end and the second end along the centerline; A first elastic member having a first connection point to be rotatably connected to the first body and a second connection point slidably coupled to the first end of the housing; A second elastic member having a third connection point to be rotatably connected to the second body, and a fourth connection point slidably coupled to the second end of the housing; A biasing element coupled to the housing about the center point and providing a biasing force against movement of the second connection point and the fourth connection point toward the center point along the center line Slide actuator comprising a. The method of claim 1, The second connection point is coupled to a first guide coupled to the housing, The fourth connection point is coupled to a second guide coupled to the housing Slide actuator. The slide actuator of claim 2, wherein the first and second guides are slidable along a centerline of the housing. The slide actuator of claim 1, wherein the first and second elastic members are formed to deform in a direction perpendicular to the center line when the linear distance between the first connection point and the third connection point changes. The slide of claim 4, wherein the first and second elastic members are formed to slide the second and fourth connection points toward the center point when the linear distance between the first connection point and the third connection point changes. Actuator. 2. The slide actuator of claim 1, wherein the first and second resilient members each comprise one or more spring V-shaped spring elements. The slide actuator of claim 1, wherein the first and second elastic members comprise a band spring. 8. The slide actuator of claim 7, wherein the first and second resilient members each comprise a plurality of spring elements. The slide actuator of claim 1, wherein the bias element comprises an annular spring. The method of claim 1, The housing includes a guide channel along the center line of the housing, The second connection point of the first elastic member is coupled to the first guide which is coupled to the guide channel of the housing and slides along the guide channel, The fourth connection point of the second elastic member is coupled to the guide channel of the housing and coupled to a second guide slideable along the guide channel. Slide actuator. The slide actuator of claim 1, The first body, Is a portable communication terminal comprising the second body slidably coupled to the first body, The second body may slide relative to the first body to open and close the mobile communication terminal, The first connection point of the first elastic member is pivotally connected to the first body, and the third connection point of the second elastic member is pivotally connected to the second body. Mobile communication terminal. The method of claim 11, The second body is slidable relative to the first body between a closed position, an open position, and an intermediate position between the closed position and the open position, The second connection point and the third connection point slide inwardly toward the center point of the housing when the second body slides toward the intermediate position with respect to the first body. Mobile communication terminal. The method of claim 12, The biasing force biases the second body towards the closed position when the second body is between the closed position and the intermediate position, The biasing force biases the second body towards the open position when the second body is between the intermediate position and the open position. Mobile communication terminal. A slide actuator for a mobile communication terminal having a first body and a second body slidably movable relative to the first body, A housing having a guide channel transverse to the first direction; A biasing element coupled to the housing and coupled to a first guide and a second guide slidable within the guide channel; A first elastic member having a connection point on a first end for rotatably connecting to the first body of the portable communication terminal, the second end being opposed to the first end and coupled to a third guide; A second elastic member having a connection point on a first end to be rotatably connected to the second body of the portable communication terminal, the second end facing the first end and coupled to a fourth guide; , The third guide is coupled to the housing adjacent one of the first and second guides to be slidably movable within the guide channel, The fourth guide is slidable within the guide channel and is coupled to the housing adjacent to the other of the first and second guides and opposite the third guide. Slide actuator. 15. The slide actuator of claim 14, wherein the bias element provides a biasing force that resists movement of the first guide and the second guide toward each other. 15. The slide actuator of claim 14, wherein the bias element comprises an annular spring. The slide actuator of claim 14, wherein the first and second elastic members comprise a band spring. The slide actuator of claim 14, The first body, Is a mobile communication terminal comprising the second body slidably coupled to the first body to be slid relative to the first body for opening and closing, The connection point of the first elastic member is pivotally connected to the first body, and the connection point of the second elastic member is pivotally connected to the second body. Mobile communication terminal. The method of claim 18, The second body is slidable relative to the first body between a closed position, an open position, and an intermediate position between the closed position and the open position, The third guide and the fourth guide slide inwardly toward the center point when the second body slides with respect to the first body toward the intermediate position. Mobile communication terminal. The method of claim 19, The biasing force biases the second body towards the closed position when the second body is between the closed position and the intermediate position; The biasing force biases the second body toward the open position when the second body is between the intermediate position and the open position. Mobile communication terminal. A slide actuator for a mobile communication terminal having a second body slidably movable relative to the first body, A housing having a first connector, a second connector, and a biasing element, The first connector is formed to attach to the first body and the housing, The second connector is formed to attach to the second body and the housing, The first and second connectors are formed to extend or reduce the slide actuator as the second body slides relative to the first body, The biasing element is coupled to generate a biasing force against the reduction of the slide actuator. Slide actuator.

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