KR101686141B1 - Dual Axis Slide Apparatus and the Electronic Equipment having it - Google Patents

Abstract

Disclosed is a biaxial slide device which can improve operating sensation experienced by a user during a sliding action, and in which an opening angle can be easily adjusted. Also disclosed is electronic equipment comprising the biaxial slide device. The biaxial slide device according to the present invention comprises: a housing; first and second rotation shafts which are rotatably disposed in the housing with first and second rotation shafts arranged parallel to each other; a cam unit which is disposed on the first and second rotation shafts; spiral grooves which are formed on the respective first and second rotation shafts in a longitudinal direction; and a link bar which includes a pair of link holes adapted to be penetrated by the first and second rotation shafts and guide protrusions adapted to be disposed on an inner circumferential surface of each of the link holes, to be fitted into the respective spiral grooves of the first and second rotation shafts, and to slide along the spiral grooves. In this case, one of the first and second rotation shafts rotates in conjunction with the other rotation shaft due to the guide protrusions of the link bar, moving along the spiral grooves, when the other rotation shaft rotates.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dual axis slide apparatus and an electronic apparatus having the dual axis slide apparatus.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biaxial slide apparatus, and more particularly, to a biaxial slide apparatus for connecting a first member and a second member which are slidably rotatably coupled to each other and an electronic apparatus having the same.

The slide device is a device that allows a pair of members to move relative to each other by a predetermined distance, and is widely used in electronic devices such as mobile phones and portable game machines in recent years.

In such an electronic apparatus such as a cellular phone or a portable game machine, a key input unit or the like provided with a plurality of keys is provided on any one member (first member) of the pair members, and a liquid crystal panel or the like is provided on the other member And the second member is moved on the first member by the sliding device to expose or cover the key input portion.

Further, in recent years, in order to increase the opening angle of the first member and the second member to 180 degrees or more, or to use the display more widely, it is preferable that the first member and the second member each have a rotation shaft, There has been developed a biaxial slide apparatus in which a member is opened in a state opposite to a horizontal or initial closed state, and this biaxial slide apparatus is gear-engaged to interlock the respective rotation shafts.

However, in the biaxial slide apparatus connected with the conventional gear, a noise or an impact is generated due to the rotating gear which is engaged when opening the gear, which has a disadvantage that the user feels a sense of operation. In addition, the conventional structure described above has a disadvantage in that it can not be provided in the biaxial slide device, and therefore, it needs to be provided separately in the first and second members provided with the biaxial slide device.

Korean Patent Laid-Open No. 10-2008-0067458 (July 21, 2008)

According to an embodiment of the present invention, there is provided a biaxial slide device capable of improving a user's operation feeling and easily adjusting an opening angle during a sliding operation, and an electronic apparatus having the same.

According to an aspect of the present invention, there is provided an electronic apparatus comprising a housing, a first rotating shaft and a second rotating shaft rotatably arranged in parallel with each other in the housing, a cam unit provided on the first rotating shaft and the second rotating shaft, A pair of link holes through which the first rotation axis and the second rotation axis respectively pass and a guide projection slidably engaged with the respective helical grooves of the first and second rotation shafts on the inner circumferential surfaces of the link holes A biaxial slide apparatus may be provided in which one of the first and second rotation shafts rotates together with the guide projection of the link bar moving along the spiral groove when one of the first and second rotation shafts rotates.

The first rotation axis and the second rotation axis may include a cylindrical rotation axis portion and a locking axis portion in which the cam unit is provided, and the helical groove may be provided in the rotation axis portion.

The cam unit further includes a fixed cam having a pair of fixed cam holes through which the first rotation shaft and the second rotation shaft respectively pass and cam protrusions for cam engagement, A rotation cam having a cam groove for cam engagement and an elastic member for resiliently urging the fixed cam toward the rotation cam.

The first rotation axis and the second rotation axis include a cylindrical rotation axis portion and a locking axis portion provided with the cam unit. The locking axis portion is provided to have a plate surface, and the fixed cam is rotated relative to the locking axis portion And the rotation cam may be provided to rotate together with the engagement shaft portion by the plate surface.

In addition, each of the helical grooves provided in the first and second rotation shafts may be provided opposite to the circumference of the rotation shaft at intervals of 180 degrees.

The helical grooves provided on the first rotation axis and the second rotation axis may be provided so that the first and second rotation axes rotate in opposite directions when the link bar is moved.

According to another aspect of the present invention, there is provided an image forming apparatus comprising: a first member and a second member which are overlapped, wherein the first member and the second member are rotatably opened, The first and second rotary shafts of the biaxial slide apparatus may be provided with the electronic devices respectively installed in the first and second members.

The biaxial slide apparatus and the electronic apparatus having the same according to the present invention can improve the operational feeling of the user due to no noise or shock generated when the conventional gear is engaged because the first rotary shaft and the second rotary shaft are linked by the link.

Further, the biaxial slide apparatus and the electronic apparatus having the same according to the present invention can easily set the opening degree of the first and second rotating shafts by changing the pitch of the helical grooves of the first and second rotating shafts on which the link is provided, When the distance between the two rotary shafts is set appropriately, the two-axis slide device can be easily designed and applied to various electronic apparatuses of different sizes.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing a biaxial slide apparatus and a closed state of an electronic apparatus having the same according to an embodiment of the present invention; FIG.
2 is a view showing an open state of a biaxial slide apparatus and an electronic apparatus having the same according to an embodiment of the present invention.
3 is a perspective view illustrating a biaxial slide apparatus according to an embodiment of the present invention.
4 is an exploded perspective view illustrating a biaxial slide apparatus according to an embodiment of the present invention.
5 is a cross-sectional view illustrating a link of a biaxial slide apparatus according to an embodiment of the present invention.
6 is a perspective view illustrating first and second rotation shafts and links of a biaxial slide apparatus according to an embodiment of the present invention.
7 and 8 are schematic plan views for explaining the link operation of the biaxial slide apparatus according to the embodiment of the present invention.
9 is a cross-sectional view illustrating a link operation of a biaxial slide apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted in the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a biaxial slide apparatus according to an embodiment of the present invention; FIG. Referring to the drawings, a biaxial slide apparatus and an electronic apparatus having the same according to the present embodiment include a first member 1 and a second member 2 which are relatively rotatably opened.

The first member 1 may be provided with a key input unit 3 composed of a plurality of keys in which various characters and symbols are displayed and the second member 2 may be provided with a display unit 4 on which an image is displayed. 1, the key input unit 3 and the display unit 4 are closed in a closed state in which the first member 1 and the second member 2 are overlapped with each other, 2, the first member 1 and the second member 2 are interlocked with each other by the biaxial slide apparatus 100 so that the key input unit 3 and the display unit 4 are rotated Exposed.

FIG. 3 is a perspective view showing a biaxial slide apparatus according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view of FIG.

Referring to the drawings, a biaxial slide apparatus 100 according to the present embodiment includes an upper housing 101 and a lower housing 102, a first rotating shaft 110A and a second rotating shaft 110B provided in parallel to the inside of the housing, First and second fixing brackets 120 and 130 for fixing both ends of the first and second rotating shafts 110A and 110B respectively, a cam unit 140 provided on the first and second rotating shafts 110A and 110B, And a link 150 for interlocking the two rotary shafts 110A and 110b. Here, the first rotary shaft 110A and the second rotary shaft 110B are provided so as to face each other substantially in the same shape, and hence the first rotary shaft 110A will be described below.

The upper housing 101 and the lower housing 102 accommodate therein the first rotary shaft 110A and the second rotary shaft 110B so as to be rotatable in parallel. The wing portions 103 and 104 of the first and second rotary shafts 110A and 110B are exposed on one side of the housing 102 and the dummy wing portions 105 and 106 are exposed on the other side. The dummy wing portions 105 and 106 are not connected to the wing portions 103 and 104 but are coaxial with the first and second rotary shafts 110A and 110B so that the biaxial slide device 100 can smoothly operate when the electronic device is installed.

The first rotating shaft 110A or the second rotating shaft 110B is formed as a long bar as a whole and has a rotary shaft portion 111 provided at one end thereof in a cylindrical shape, 113a, respectively. The rotary shaft portion 111 and the engagement shaft portion 113 have the same axial center and the rotary shaft portion 111 has a diameter larger than the engagement shaft portion 113. The rotary shaft portion 111 of the first and second rotary shafts has a wing connecting portion 112 for fastening the wing portions 103 and 104 at the ends thereof. In this embodiment, the plate surface 113a of the latching shaft portion 113 is formed by machining two surfaces opposed to each other in the circumferential direction, but the present invention is not limited to this, and the plate surface 113a may be provided in a polygonal shape.

 The first fixing bracket 120 is provided on the rotary shaft portion 111 side of the first and second rotary shafts 110A and 110B and the second fixing bracket 130 is provided on the engagement shaft portions 110A and 110B of the first and second rotary shafts 110A and 110B. (Not shown).

The first fixing bracket 120 is provided in an elliptical shape corresponding to the inner shape of the housing and fixedly coupled to the upper housing 101 or the lower housing 102. The first fixing bracket 120 has a pair of fixing holes 121 and 122 in the longitudinal direction through which the first and second rotation shafts pass.

The second fixing bracket 130 is also provided in an elliptical shape corresponding to the inner shape of the housing and is fixedly coupled to the upper housing 101 or the lower housing 102. The second fixing bracket 130 is provided with a fixing hole 132 having a pair of receiving holes (not shown) in which the ends of the first and second rotating shafts 110A and 110B are received, Is fixed to the upper housing or the lower housing using screws together with the fixing mount 134. [ The fixed mount 134 is provided in a thin plate shape and has a pair of pass holes 133 through which the first and second rotational shafts 110A and 110B pass. The clip 135 is interposed between the fixed mount 134 and the second fixing bracket 130 to prevent the rotation shaft from deviating in the longitudinal direction. The clip 135 is fitted to the neck 114 of the rotary shaft portion 113.

The cam unit 140 includes a rotation cam 141 having a back surface supported by a step 115 formed by a diameter difference between the rotation axis part 111 and the engagement shaft part 113, And a resilient member 147 for resiliently biasing the fixed cam 145 toward the rotation cam 141 side.

The rotation cams 141 are provided in two and coupled to the first and second rotation shafts 110A and 110B, respectively. Although not shown in detail in FIG. 3, the rotation cam 141 is provided with a rotation cam hole 142 which is engaged with the plate surface 113a of the engagement shaft portion 113 at the center thereof, and can rotate together when the rotation shaft rotates . The rotation cam 141 has the cam groove 143 on the front side of the rotation cam 141 opposed to the fixed cam 145. The cam groove 143 has a wave shape in which mountains and valleys are alternately formed.

The fixed cam 145 is provided inside the housing in an elliptical shape so as to be movable in the longitudinal direction and has a pair of fixed cam holes 146 through which the first and second rotating shafts 110A and 110B penetrate. The fixed cam hole 146 is provided in a circular shape unlike the rotating cam hole 142, so that the fixed cam hole 146 does not rotate together with the rotating shaft. The fixed cam 145 has a cam protrusion 145 provided in an acid form on the front side facing the cam groove 143 of the rotation cam 141. [ It is a matter of course that the structure and operation of the cam groove 143 and the cam protrusion 145 are well known to those of ordinary skill in the art,

The elastic member 147 is installed between the back surface of the fixed cam 145 and the second fixing bracket 130 and is installed so as to press the fixed cam 145 toward the rotation cam 141 side. As the elastic member 147, a coil spring, a disk spring, or the like can be employed. In the case of a disk spring, a cam force greater than a coil spring can be realized.

The link 150 allows one rotation axis of the first rotation axis 110A and one rotation axis of the second rotation axis 110B to rotate in mutually opposite directions when the rotation axis is rotated. To this end, the link 150 includes a helical groove 152 provided in a spiral shape along the longitudinal direction on the rotary shaft portion 111 of the first rotary shaft 110A, a link bar 154 moving along the helical groove 152, .

The spiral groove 152 is formed by machining a groove having a semicircular cross section in the shape of a spiral along the circumference of the rotary shaft portion 111. The pitch of the spiral groove 152 is used to form a biaxial slide hinge, Can be adjusted. A pair of the helical grooves 152 may be provided at the circumference of the rotary shaft portion 111 symmetrically at 180 degrees so that the movement of the link bar 154 is smooth.

Like the first and second fixing brackets 120 and 130, the link bar 154 is provided in an elliptical shape so as to be installed inside the housings 101 and 102, and a pair of first and second rotating shafts 110A and 110B, And a link hole 156 of the link member 156.

The link hole 156 of the link 150 has guide projections 157 which move along the spiral grooves 152 of the first and second rotating shafts as shown in FIG. As described above, since the helical groove 152 has a semicircular cross section, the guide protrusions 157 are also provided in a semicircular shape and are slidably engaged with the helical grooves 152, and the guide protrusions 157 are formed in a pair of helical grooves 152 ) Are symmetrically arranged at 180 degrees so as to correspond to the link holes 156. [

Hereinafter, the operation of the biaxial slide apparatus and the electronic device including the same will be described.

First, the biaxial slide apparatus 100 according to the present embodiment can be installed in the first member 1 and the second member 2 of the electronic apparatus, respectively. For example, the biaxial slide apparatus 100 includes wing portions 103 and 104 provided on respective rotary shafts 111 of the first and second rotary shafts 110A and 110B exposed to one side of the housings 101 and 102, The first and second members 1 and 2 are connected to the dummy wing portions 105 and 106 exposed to the other side, respectively. At this time, if the first rotary shaft 110A of the biaxial slide apparatus 100 is installed on the first member 1, the second rotary shaft 110B may be installed on the second member 2 and vice versa, to be.

When the first member 1 is rotated and opened by an external force, the first rotation shaft 110A coupled to the first member 1 rotates. The rotation of the first rotation shaft 110A causes the rotation cam 141 provided in the engagement shaft portion 113 to rotate together and the rotation cam 141 rotates relative to the fixed cam 145 that is cam-coupled. At this time, when the user applies a force so that the cam groove 143 of the rotation cam 141 can exceed the gap between the cam protrusions 145 of the fixed cam 145, the electronic device moves from the closed state to the open state, The electronic device maintains the closed state by the elastic force of the elastic member 147 if the gap between the cam protrusions 143 does not exceed the interval between the cam protrusions 145. [ By the operation of the cam member 140, the user can feel a sense of clicking at the time of opening.

Meanwhile, when the first rotary shaft 110A rotates, the link bar 154 coupled to the rotary shaft portion 111 of the first rotary shaft 110A starts to move as shown in FIG. The link bar 154 moves linearly toward the first fixing bracket 120 as the first rotation shaft 110A rotates if the position adjacent to the movable cam 141 is the closed state of the electronic device as shown in the figure.

For example, FIG. 7 shows the link bar 154 when the electronic device is in a closed state. The link bar 154 is located at the rotary shaft portion 111 adjacent to the engagement shaft portion 113 of the rotary shaft and the guide projections 157 provided in the pair of link holes 156 provided in the link bar 154 And is coupled to each of the helical grooves 152 of the first and second rotary shafts.

As shown in FIG. 8, when the first rotary shaft 110A rotates, the link bar 154 moves to the left in the drawing along the spiral groove 152 of the first rotary shaft 110A. At this time, as the link bar 154, which maintains the distance between the pair of guide protrusions 157, which is a fixed distance, moves, the helical groove 152 of the second rotary shaft 110B also moves, (110A, 110B) rotate interlockingly.

As described above, since the biaxial slide apparatus 100 according to the present embodiment can control the degree of rotation, for example, the opening angle of the electronic apparatus, by the movement of the link connecting the first and second rotation shafts 110A and 110B in the rotational axis direction It is easy to slim down. FIG. 9 is a view illustrating adjustment of the pitch P of the spiral groove so that the spiral groove can be rotated about 160 degrees according to an embodiment of the present invention.

Also, the biaxial slide apparatus 100 according to the present embodiment and the electronic apparatus having the same can easily change the size to suit various sizes of electronic apparatuses. For example, the two-axis slide apparatus 100 is installed in the thickness direction of the first and second members 1 and 2 as shown in FIG. 1, wherein the thickness of the first and second members 1 and 2 is changed The spacing between the first and second fixing brackets 120 and 130 and the link 150 can be easily changed by specifically changing the distance between the pair of fixing holes 121 and 122 and the link hole 156. [

1. First member 2. Second member
101. Upper housing 102. Lower housing
100 .. Biaxial slide apparatus 110A, 110B .. First and second rotating shafts
120,130 .. First and second fixing brackets 140 .. Cam unit
141 .. rotation cam 145 .. fixed cam
147 .. Elastic member 150 .. Link
152 .. Spiral groove 154 .. Link bar
157 .. Guide projection

Claims (7)

A housing,
A first rotation shaft and a second rotation shaft provided so as to be rotatable in parallel within the housing,
A cam unit provided on the first rotation axis and the second rotation axis,
A spiral groove provided along the longitudinal direction of the first rotation shaft and the second rotation shaft,
And a link bar having a pair of link holes through which the first rotation axis and the second rotation axis pass, respectively, and guide projections slidingly engaged with the respective helical grooves of the first and second rotation shafts on the inner circumferential surface of the link holes,
When one of the first rotary shaft and the second rotary shaft rotates, the other rotates in conjunction with the guide projection of the link bar moving along the spiral groove,
Wherein the first rotation axis and the second rotation axis include a cylindrical rotation axis portion and a locking axis portion in which the cam unit is provided,
Wherein the spiral groove is provided in the rotary shaft portion. delete The method according to claim 1,
The cam unit includes a fixed cam having a pair of fixed cam holes through which the first rotation shaft and the second rotation shaft respectively pass, and a cam projection for cam engagement,
A rotation cam provided on the first and second rotation shafts and having cam grooves cam-engaged with the cam protrusions,
And a resilient member for resiliently urging the fixed cam toward the rotation cam. The method of claim 3,
Wherein the first rotation axis and the second rotation axis include a cylindrical rotation axis portion and a locking axis portion in which the cam unit is provided,
The holding shaft portion is provided to have a plate surface,
Wherein the fixed cam is provided so as to pass therethrough relative to the engagement shaft portion, and the rotation cam is provided to rotate together with the engagement shaft portion by the plate surface. The method according to claim 1,
Wherein the two spiral grooves provided on the first rotation axis and the second rotation axis are provided opposite to each other at an interval of 180 degrees on the circumference of the rotation axis. The method according to claim 1,
Wherein the spiral groove provided on the first rotation axis and the second rotation axis is provided so that the first and second rotation axes are opposed to each other so as to rotate in opposite directions when the link bar is moved. A first member and a second member overlapping each other,
The first and second rotary shafts of the biaxial slide device provided by any one of claims 1 and 3 to 6 are rotatably supported on the first and second members so that the first member and the second member can be opened Electronic devices installed respectively.

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