JP4960525B1 - Rail device for electronic equipment, information terminal display device - Google Patents

Abstract

A rail device 160 provided in an electronic device including an upper casing 141 and a lower casing 142 is provided that optimally fixes a parallel relationship or an angular relationship between the two casings and realizes smooth sliding. The first slider 182, the first guide path 172, the second slider 184, and the second guide path 174 are provided, and the first movement path of the first guide path 172 and the second guide path 174 are second. The movement trajectories have the same trajectory shape and the relative positional relationship is shifted. Then, the first slider 182 and the second slider 184 are integrated into one moving body, and the first guide path 172 and the second guide path 174 are integrated into the other moving body, or the first slider 182 is integrated. The second guide path 174 is integrated into one moving body, and the second slider 184 and the first guide path 172 are integrated into the other moving body, thereby utilizing the relative motion of the one moving body and the other moving body. Thus, the upper housing 141 and the lower housing 142 are slid.
[Selection] Figure 4

Description

  The present invention relates to a rail device used in an electronic device such as an electronic book reader for browsing an electronic book, a notebook computer, a personal digital assistant (PDA / smartphone), and an information terminal game machine.

  In recent years, electronic devices such as electronic book readers, personal digital assistants (PDAs), notebook computers, personal digital assistants (PDA / smartphones), game consoles for information terminals, and the like tend to be smaller and thinner in their cases. Improved. On the other hand, there is a demand for enlargement of the screen and enhancement of an operation keyboard, which are in conflict with downsizing. In order to realize these conflicting requirements at the same time, various ideas have been proposed.

  For example, in the display devices for information terminals described in Patent Documents 1 and 2, two casings can be foldable by using hinges, and the casing is downsized. In addition, each casing is provided with a screen that functions as a unit, and the screen is enlarged.

  Also, for example, in the portable information terminal described in Patent Document 3, two housings are slid in a plane direction using a slide mechanism, and the slide mechanism is further rotated so that the upper surface of each housing is It can be displaced to have the same height.

  In particular, in recent years, portable terminals called smartphones that perform various operations using a touch panel screen have become widespread. However, since the screen of a smartphone is relatively small, the amount of information displayed and operability are limited. Therefore, display screens are provided in each of the two housings. Usually, the two housings are stacked and carried, only one screen is used, and the two screens are integrated by sliding the housing as necessary. A technique for making it function as a single screen has been proposed (see Patent Document 4).

JP 2006-113501 A JP-A-11-167354 JP 2009-60292 A JP 2011-102874 A

  However, in the slide mechanisms disclosed in Patent Documents 3 and 4, while the other casing overlaps with one casing, the horizontal relationship can be maintained, but when the overlapping state is released, Since the slide mechanism is structured to rotate, there is a problem that the other housing tends to be inclined with respect to one housing. For example, even if two screens arranged in both cases are integrated, the other screen is inclined with respect to one of the other screens during the operation, and the operability is deteriorated.

  Further, in the case of such a two-screen portable terminal, there is a problem that a gap is easily formed at the joint between the two screens when the two screens are integrated. As a result, even if the screens are integrated, there is a problem that the image is divided by the gap and visibility is poor.

  The present invention has been made in view of such problems, and by applying a rail device having a new structure to an electronic apparatus having two housings, the parallel relationship and angle between the housings can be obtained. The purpose is to realize a smooth slide while fixing the relationship optimally.

The present invention to achieve the above object, provided in an electronic apparatus including the lower housing disposed an upper housing located above, in a state of overlapping the lower or inside of the upper housing, said upper housing The body and the lower housing are slid relative to each other in a specific direction, and at one end of the slide in the specific direction, the upper housing and the lower housing are perpendicular to the specific direction. A first rail, a first linear path that linearly guides the first slider in the specific direction, and one end of the first linear path. And a first guide path having a first vertical path for guiding the first slider in the vertical direction, a second slider, and a second straight line for linearly guiding the second slider in the specific direction. A continuous path at one end of the path and the second straight path A second guide path having a second vertical path for guiding the second slider in the vertical direction, and a first movement trajectory of the first guide path by the first slider, and by the second slider The second movement locus of the second guide path has the same locus shape and the relative positional relationship is shifted, and the first slider and the second slider are integrated into one moving body, and the second movement locus is One guide path and the second guide path are integrated into the other moving body, and the upper casing and the lower casing are slid using the relative movement of the one moving body and the other moving body, Alternatively, the first slider and the second guide path are integrated into one moving body, and the second slider and the first guide path are integrated into the other moving body, and the one moving body and the other moving body are integrated. Using the relative movement of the body, the upper side Body and slide the lower housing, when the line connecting the first slider and the second slider in the slide is defined as a virtual link, serial and virtual links of the first and second guideways guiding direction Ru always set so as not to a right angle, characterized in that a rail arrangement for an electronic device.

The present invention to achieve the above object, provided in an electronic apparatus including the lower housing disposed an upper housing located above, in a state of overlapping the lower or inside of the upper housing, said upper housing The body and the lower housing are slid relative to each other in a specific direction, and at one end of the slide in the specific direction, the upper housing and the lower housing are perpendicular to the specific direction. A first rail, a first linear path that linearly guides the first slider in the specific direction, and one end of the first linear path. And a first guide path having a first vertical path for guiding the first slider in the vertical direction, a second slider, and a second straight line for linearly guiding the second slider in the specific direction. A continuous path at one end of the path and the second straight path A second guide path having a second vertical path for guiding the second slider in the vertical direction, and a first movement trajectory of the first guide path by the first slider, and by the second slider The second movement locus of the second guide path has the same locus shape and the relative positional relationship is shifted, and the first slider and the second slider are integrated into one moving body, and the second movement locus is One guide path and the second guide path are integrated into the other moving body, and the upper casing and the lower casing are slid using the relative movement of the one moving body and the other moving body, Alternatively, the first slider and the second guide path are integrated into one moving body, and the second slider and the first guide path are integrated into the other moving body, and the one moving body and the other moving body are integrated. Using the relative movement of the body, the upper side Body and slide the lower housing, when the line connecting the first slider and the second slider in the slide is defined as a virtual link, the virtual link, the first and second guideways A rail device for electronic equipment , wherein a restricting member for restricting rotation of the one moving body and the other moving body is disposed at a point where the guide direction is a right angle.

  In the rail device related to the invention, as the regulating member, a third slider, a third straight path for linearly guiding the third slider in the specific direction, and one end of the third straight path are continuously provided. And a third guide path having a third vertical path that guides the third slider in the vertical direction, and the third movement path of the third guide path by the third slider is The first and second movement trajectories have the same trajectory shape, and the relative positional relationship is deviated from the first and second movement trajectories.

  In the rail device related to the invention, the first slider and the second slider are integrated into one moving body, and the first guide path and the second guide path are integrated into the other moving body. In this case, the first guide path is shifted to one end side of the second straight path and shifted to the projecting end side of the second vertical path with respect to the second guide path, and the virtual link, The guide directions of the first and second guide paths are set so as not to be always a right angle.

  In the rail device related to the invention, the first slider and the second guide path are integrated into one moving body, and the second slider and the first guide path are integrated into the other moving body. In the case, in the one moving body, the first slider is disposed at a location exceeding one end side of the second straight path in the second guide path and a location exceeding the protruding end of the second vertical path, In the other moving body, the second slider is disposed at a location exceeding one end side of the first straight path in the first guide path and a location exceeding the protruding end of the first vertical path. The guide direction of the virtual link and the first and second guide paths is set so as not to be always a right angle.

  In the rail device related to the invention, the first and second guide paths form a partially arc-shaped guide locus in a continuous portion of the first and second straight paths and the first and second vertical paths. It is characterized by that.

  In the rail device related to the invention, the first and second vertical paths in the first and second guide paths are guided in the vertical direction on one end side of the first and second straight paths, A guide locus returning to the other end side of the first and second straight roads is formed.

The present invention that achieves the above object comprises the rail device according to the above invention and the electronic device, wherein an upper screen is disposed on the upper surface of the upper housing, and the lower screen is disposed on the upper surface of the lower housing. When the screen is arranged and the rail device relatively slides the upper housing and the lower housing in the specific direction and relatively slides in the vertical direction, the upper screen and the lower housing The display device for an information terminal is characterized in that the lower screens have the same height.
The information terminal display device related to the invention includes an upper screen cover that covers an end portion of the upper screen, and a lower screen cover that covers an end portion of the lower screen. The cover is housed in the upper housing, and the lower screen cover is housed in the lower housing.
The information terminal display device related to the invention includes an upper screen cover that covers an end portion of the upper screen, and a lower screen cover that covers an end portion of the lower screen. A cover protrudes from the front side of the lower casing, and the lower screen cover protrudes from the rear side of the upper casing. The upper casing and the lower casing are The upper screen cover covers the end portion of the upper screen, and the lower screen cover covers the end portion of the lower screen.
The present invention that achieves the above object comprises the rail device according to the above invention and the electronic device, wherein a screen is disposed on the upper housing, and the lower housing covers an end of the screen. The upper casing and the cover are slid relative to the specific direction and slid relative to the vertical direction by the rail device. When it is made to do, the said cover covers the edge part of the said screen, It is an information terminal device characterized by the above-mentioned.

  According to the present invention, it is possible to realize a smooth slide while optimally fixing the parallel relationship and the angular relationship between the two housings.

(A) is the external appearance perspective view at the time of developing the electronic device and rail device which concern on 1st Embodiment, (b) is the external appearance perspective view of the state which folded the same electronic device and rail device. It is a block diagram which shows the electrical component of an electronic device. (A) is a top view at the time of developing the same electronic device and rail device, (b) is a plan view of the state which folded the same electronic device and rail device. It is a side view which shows typically the slide structure of the same electronic device and rail apparatus. (A) And (b) is the figure which illustrated the case where a pair of cases rotate relatively by lacking some elements of the rail device, and (c) is a pair by the rail device with which the element is filled. It is the figure which illustrated the case where the housing | casing does not rotate relatively. It is a side view which shows the modification of the rail apparatus of 1st Embodiment. It is a side view which shows the modification of the rail apparatus of 1st Embodiment. It is a side view which shows the modification of the rail apparatus of 1st Embodiment. (A) is an external appearance perspective view at the time of developing the electronic device and rail device which concern on 2nd Embodiment, (b) is the external appearance perspective view of the state which folded the same electronic device and rail device. It is a side view which shows typically the slide structure of the same electronic device and rail apparatus. It is a side view which shows the modification of the rail apparatus of 2nd Embodiment. It is a side view which shows the modification of the rail apparatus of 2nd Embodiment. It is an external appearance perspective view which shows the modification of the rail apparatus of 2nd Embodiment. It is a side view which shows the modification of the rail apparatus of 2nd Embodiment. It is a top view which shows the modification of the rail apparatus of 2nd Embodiment. It is a side view which shows the modification of the rail apparatus of 2nd Embodiment. It is a top view of the state which folded the electronic device and rail apparatus which concern on 3rd Embodiment. It is a top view at the time of expand | deploying the electronic device and rail apparatus which concern on 3rd Embodiment. It is a side view which shows typically the slide structure of the same electronic device and rail apparatus. It is a side view which shows the modification of the rail apparatus of this embodiment group.

  Hereinafter, a rail device for an electronic device according to an embodiment of the present invention will be described in detail with reference to the drawings. In the present embodiment, an information terminal display device is exemplified as an electronic device, and a case where a rail device is applied to the information terminal device is shown.

  The configuration of the rail device 160 of the information terminal display device 110 according to the first embodiment will be described with reference to FIGS.

  As shown in FIGS. 1A and 1B, the information terminal display device 110 includes a plate-shaped upper housing 141 and a plate-shaped lower housing arranged in a state of overlapping the lower side of the upper housing 141. A side housing 142 is provided. The rail device 160 is disposed on both side surfaces of the upper casing 141 and the lower casing 142, and slides the upper casing 141 and the lower casing 142 relative to each other in the plane direction. The upper casing 141 and the lower casing 142 are slid relative to each other in the direction perpendicular to the plane.

  The upper housing 141 has a screen 143 provided on the surface (upper surface in the drawing), a terminal 113 provided on one side (right rear side in the drawing), and the other side (left front side in the drawing). ) And a cover 117 that covers the end of the screen 144 of the lower housing 142 and the terminal 114 when overlaid. A second terminal 113B is provided on the surface of the cover 117 that comes into contact with the lower housing 142.

  On the other hand, the lower casing 142 has a screen 144 provided on the surface thereof, a terminal 114 provided on a side surface of the other side (the left front side in the drawing), and an upper surface in one side (the right rear side in the drawing). The cover 115 is provided so as to protrude to the side, and covers the end of the screen 141 of the upper housing 141 and the terminal 113 when they are overlaid. A second terminal 114 </ b> B is provided on the surface of the cover 115 that contacts the upper housing 141.

  The screen 143 of the upper housing 141 extends to the edge of one end of the housing (right back side in the drawing). Similarly, the screen 144 of the lower housing 142 extends to the edge of the other end (left front side in the drawing) of the housing. Therefore, as shown in FIG. 1A, when one end of the upper casing 141 and the other end of the lower casing 142 are brought together, the two screens 143 and 144 are almost connected. It becomes. As a result, it can be handled as if it were one screen.

  On the other hand, as shown in FIG. 1B, in the state where the upper and lower casings 141 and 142 are overlapped in the surface vertical direction, the end of one of the upper casings 141 (the right rear side in the drawing) is The cover 115 is coupled to the side surface of the cover 115 protruding upward from the lower housing 142. At the same time, the other end (the left front side in the drawing) of the lower state 142 is coupled to the side surface of the cover 117 projecting downward from the upper housing 141. As a result, the two screens 143 and 144 arranged at the very edges of the casings 141 and 142 are protected by the covers 115 and 117.

  The screens 143 and 144 are liquid crystal displays using a liquid crystal composition, and are arranged from one side of the upper and lower casings 141 and 142 to the other side. In addition, although the liquid crystal display is illustrated here, various structures, such as the organic EL display which employ | adopted the organic EL composition, and a plasma display, are applicable.

  The terminals 113, 113A, 114, 114A are used as communication interfaces and power supply contact points. That is, the upper and lower housings 141 and 142 are electrically joined together to exchange information and power. In addition, although the case where it electrically joins with a terminal is illustrated here, you may enable it to transmit information by radio | wireless communication.

  As shown in FIG. 2, CPUs 30, a hard disk drive 31, a RAM 32, a detection circuit 33, a display control circuit 34, and a data bus 35 are built in the housings 141 and 142.

  The CPU 30 comprehensively controls the entire information terminal display device 10 in accordance with signals input by touch operations on the screens 143 and 144.

  The hard disk drive 31 stores various programs and data for operating the information terminal display device 110.

  The RAM 32 is a working memory that the CPU 30 executes processing. In the RAM 32, the program read from the hard disk drive 31 is sequentially processed.

  The detection circuit 33 detects the state of the upper and lower casings by exchanging signals when the terminals 113, 113A, 114, 114A are joined. In the case of wireless communication, it is only necessary to detect whether or not mutual communication has been established.

  The display control circuit 34 controls the display state of the screens 143 and 144. The display control circuit 34 controls the two screens 143 and 144 to function as a unit when the detection circuit 33 detects that the upper and lower casings 141 and 142 are connected. That is, in this case, the display control circuit 34 sets the entire two screens 143 and 144 as one screen.

  The data bus 35 electrically connects each component such as the CPU 30.

  Next, the detailed structure of the rail device 160 will be described.

  As shown in FIG. 3, the rail device 160 includes a pair of rail blocks 160A and 160B. Each of the rail blocks 160A and 160B includes an inner moving body 162 and an outer moving body 164, and has a symmetrical structure.

  FIGS. 4A to 4C schematically show only one rail block 160 </ b> A of the rail device 160. Here, for convenience in explaining the relative movement relationship, the inner moving body 162 is illustrated by a dotted line, and the outer moving body 164 is illustrated by a solid line.

  A first guide path 172 and a second guide path 174 are formed in the outer moving body 164, and a third guide path 176 is formed in the inner moving body 162. The inner moving body 162 is provided with first and second sliders 182 and 184 that are guided by the first and second guide paths 172 and 174 of the outer moving body 164. Further, a third slider 186 that is guided by the third guide path 176 of the inner moving body 162 is disposed on the outer moving body 164.

  The first guide path 172 includes a first straight path 172A and a first vertical path 172B. The first straight path 172A is a groove that linearly guides the first slider 182 along the surface direction of the housings 141 and 142. The first vertical path 172B is a groove that is provided continuously at one end of the first straight path 172A and guides the first slider 182 in the direction perpendicular to the planes of the housings 141 and 142. In the present embodiment, the first vertical path 172B is bent downward with respect to the first straight path 172A, and the entire first guide path 172 forms an L-shaped movement locus.

  The second guide path 174 includes a second straight path 174A and a second vertical path 174B. The second straight path 174A is a groove that linearly guides the second slider 184 along the surface direction of each of the housings 141 and 142. The second vertical path 174B is a groove that is provided continuously at one end of the second straight path 174A and guides the second slider 184 in the direction perpendicular to the planes of the housings 141 and 142. In the present embodiment, the second vertical path 174B is bent downward with respect to the second straight path 173A, and the entire first guide path 174 has an L-shaped movement locus.

  The third guide path 176 includes a third straight path 176A and a third vertical path 176B. The third straight path 176A is a groove that linearly guides the third slider 186 along the surface direction of each housing 141, 142. The third vertical path 176B is a groove that is provided continuously at one end of the third straight path 176A and guides the third slider 186 in the direction perpendicular to the planes of the housings 141 and 142. In the present embodiment, the third vertical path 176B is bent upward with respect to the third straight path 176A, and the entire third guide path 176 forms an L-shaped movement locus.

  The first and second guide paths 172 and 174 formed on the outer moving body 164 have the same first movement locus for guiding the first slider 182 and the second movement locus for guiding the second slider 184, And it arrange | positions so that a relative positional relationship may shift | deviate. As the type of deviation of the relative positional relationship, either “180-degree point symmetry” or “translation” or a combination thereof is desirable, but here, a translational (sliding) relationship is used. Specifically, the first guide path 172 is located along the second straight path 174A of the second guide path 174 toward the second vertical path 174B (the left side in FIG. 4), and is based on the second vertical path 174B. It has moved parallel to the position advanced to the end side (opposite side to the protruding end side, ie, the upper side in FIG. 4).

  Furthermore, the movement trajectory of the third slider 186 by the third guide path 176 formed on the inner moving body 162 is the same as the first and second movement trajectories by the first and second guide paths 172 and 174, and The relative positional relationship is deviated from the first and second movement trajectories. This shift in the relative positional relationship is 180 degree point-symmetric with respect to the first and second movement trajectories and has a parallel movement (sliding) relationship. In particular, it is preferable to set so that the third slider 186 and the first and second sliders 182 and 184 do not exist at the same place during movement.

  As described above, the first and second sliders 182 and 184 are fixed and integrated with the inner moving body 162, and the first and second guide paths 172 and 174 are integrated with the outer moving body 164, thereby The moving body 162 and the outer moving body 164 can be slid relative to each other. Further, since the outer moving body 164 and the inner moving body 162 are guided by the at least two first and second guide paths 172 and 174 and the at least two first and second sliders 182 and 184, relative rotation with each other. It can be slid in a state where is suppressed.

  Here, the roles of the third guide path 176 and the third slider 186 will be described. As shown in an enlarged view in FIG. 5A, if the third guide path 176 and the third slider 186 do not exist, a line segment L1 connecting the first slider 182 and the second slider 184 (this line segment is represented by There is a timing at which the first and second guide paths 172, 176 are at right angles to each other (defined as “first virtual link L1”). At this timing, the rotation or swing of the first virtual link L1 is allowed. As a result, one of the sliders may run backward due to this rotation or swinging motion. For example, FIG. 5B shows a state in which the inner moving body 162 and the outer moving body 164 are relatively rotated by the first slider 182 traveling backward on the first guide path 172.

  Therefore, as shown in FIG. 5C, when there is a third guide path 176 whose positional relationship is shifted, the first slider 182 and the third slider 186 are connected at the timing described in the above (a). The second virtual link L2 and the third virtual link L3 connecting the second slider 184 and the third slider 186 can be defined simultaneously. Further, these first to third virtual links L1 to L3 are not overlapped with each other. As a result, even if the first virtual link L1 tries to rotate, the rotation radius and the rotation center of the first virtual link L1 are different from those of the second and third virtual links L2, so that the first virtual link L1 rotates alone. I can't. Similarly, even if the second virtual link L2 is about to rotate, the rotation is restricted by the first and third virtual links L1 and L3. The same applies to the third link. That is, in the present embodiment, the third guide path 176 and the third slider 186 restrict relative rotation at a point where the guide directions of the first virtual link L1 and the first and second guide paths 172 and 174 are perpendicular. Functions as a regulating member.

  Next, returning to FIGS. 4D to 4F, the operation of sliding the upper casing 141 and the lower casing 142 by the rail block 160A will be described. Here, for convenience, hatching is inserted into the upper housing 141 and the lower housing 142, and the relative positional relationship is illustrated.

  The upper housing 141 is integrated with the inner moving body 162. Further, the lower housing 142 is integrated with the outer moving body 164 via the connecting member 164A. Therefore, the relative movement of the inner moving body 162 and the outer moving body 164 in the rail device 160 becomes the relative movement of the upper casing 141 and the lower casing 142 as it is. For example, as shown in FIG. 4D, the sliders 182, 184, 186 are located at the protruding ends (ends opposite to the side continuous with the vertical path) of the linear paths 172A, 174A, 176A. In this case, the upper housing 141 and the lower housing 142 overlap each other. As shown in FIG. 4 (e), when the sliders 182, 184, 186 are moved to the bent portions (portions continuous with the vertical path) of the straight paths 172A, 174A, 176A, The side housing 142 slides relative to the surface direction, and the screen 144 formed on the upper surface of the lower housing 142 is exposed. Further, as shown in FIG. 4 (f), the sliders 182, 184, 186 are moved to the projecting ends of the vertical paths 172B, 174B, 176B (ends on the opposite side to the side continuous with the straight path). As a result, the upper casing 141 and the lower casing 142 slide relative to each other in the vertical direction to approach each other, and the screen 143 of the upper casing 141 and the screen 144 of the lower casing 142 have the same height. In this way, by using the rail device 160, the two casings 141 and 142 of the information terminal display device 110 maintain a parallel state to each other, and move in an L shape without rotating relative to each other. The slide movement that becomes the locus can be realized.

  Next, a modified example of the rail device 160 of the first embodiment will be introduced. In order to avoid redundant description, only the rail device that realizes an L-shaped movement locus is illustrated here, and illustration and description of the electronic device such as the information terminal display device 110 are omitted. Here, one rail block 160A of the pair of rail blocks is schematically shown. For convenience of explanation, the inner moving body 162 is illustrated by a dotted line, and the outer moving body 164 is illustrated by a solid line.

  In the modification shown in FIG. 6, a first guide path 172, a second guide path 174, and a third guide path 176 are formed in the outer moving body 164. The inner moving body 162 is provided with first to third sliders 182, 184, 186 that are guided by the first to third guide paths 172, 174, 176 of the outer moving body 164.

  The first guide path 172 includes a first straight path 172A and a first vertical path 172B. The second guide path 174 includes a second straight path 174A and a second vertical path 174B. The third guide path 176 includes a third straight path 176A and a third vertical path 176B. In this configuration example, the first to third straight paths 172A, 174A, and 176A share one groove 171 and space saving is achieved. Accordingly, the first to third vertical paths 172B, 174B, and 176B are arranged so as to branch from the groove 171. As a result, the movement trajectory bent from the first to third straight paths 172A, 174A, and 176A Become.

  Furthermore, the relative positions of the first to third movement trajectories by the first to third guide paths 172, 174, and 176 are shifted from each other, and here are in a parallel movement (sliding) relationship. As already described, since the first to third straight paths 172A, 174A, and 176A share one groove 171, the branch positions of the first to third vertical paths 172B, 174B, and 176B are determined from the groove 171. By shifting, the movement trajectories of each other are shifted.

  In this manner, in the state shown in FIG. 6B, even if the first virtual link L1 tries to rotate, the second and third virtual links L2 and L3 have different rotation radii and rotation centers. The rotation of the link L1 is restricted. Similarly, even if the second virtual link L2 is about to rotate, the rotation is restricted by the first and third virtual links L1 and L3. The same applies to the third link. That is, also in this embodiment, the third guide path 176 and the third slider 186 restrict relative rotation at a point where the guide directions of the first virtual link L1 and the first and second guide paths 172 and 174 are at right angles. Functions as a regulating member. It is particularly desirable to shift the branch positions of the first to third vertical paths 172B, 174B, and 176B so that the lengths of the first virtual link L1 and the second virtual link L2 are not equal. Thereby, relative rotation can be suppressed more reliably.

  As a result, as shown in FIG. 6C, the inner moving body 162 and the outer moving body 164 can slide along the first to third movement trajectories without relative rotation.

  In the example of FIG. 6 described above, the case where the guide path is not formed on the inner moving body 162 is illustrated. However, as in the modification shown in FIG. The fourth to sixth guide paths P1, P2, and P3, which are point-symmetric with and parallel to the guide paths 172, 174, and 176, are disposed, and these fourth to sixth are disposed on the outer moving body 164 side. It is also preferable to dispose the fourth to sixth sliders Q1, Q2, Q3 guided by the guide paths P1, P2, P3. In this way, further stabilization can be achieved.

  Next, a modification shown in FIG. 8 will be described. Here, a first guide path 172 is formed in the outer moving body 164. Further, a second guide path 174 is formed in the inner moving body 162. Further, a second slider 184 that is guided by the second guide path 174 of the inner moving body 162 is disposed on the outer moving body 164. A first slider 182 that is guided by the first guide path 172 of the outer moving body 164 is disposed on the inner moving body 162.

  The first guide path 172 includes a first straight path 172A and a first vertical path 172B, and serves as an L-shaped first movement locus. The second guide path 174 includes a second straight path 174A and a second vertical path 174B, and serves as an L-shaped second movement locus.

  The second movement locus of the second slider 184 by the second guide path 174 formed in the inner moving body 162 has the same shape as the first movement locus of the first slider 182 by the first guide path 172. Further, the relative positions of the first movement locus and the second movement locus are point-symmetric and have a parallel movement (sliding) relationship.

  In particular, in the present modification, the position of the first slider 182 of the inner moving body 162 exceeds the continuous portion X with the second vertical path 174B in the second straight path 174A with respect to the planar direction (left-right direction in the figure), In addition, it is set at a location beyond the protruding end Y of the second vertical path 174B with respect to the surface vertical direction (vertical direction in the figure). In addition, the position of the second slider 184 of the outer moving body 164 is the first vertical in the plane direction with respect to the first linear path 172A beyond the continuous portion X with the first vertical path 172B and in the plane vertical direction. It is set at a location beyond the tip Y of the path 172B. In this way, it is possible to maintain a state in which the guide directions of the virtual link L1 and the first and second guide paths 172 and 174 are not always perpendicular as shown in the movement trajectories of FIGS. 8B to 8D. . As a result, even if the virtual link L1 tries to rotate, it interferes with the guide directions of the first and second guide paths 172 and 174, so that it is possible to suppress relative rotation of the inner moving body 164 and the outer moving body 164.

  Next, the configuration of the rail device 260 of the information terminal display device 210 according to the second embodiment will be described with reference to FIG. Here, the description will focus on the differences from the first embodiment.

  As shown in FIGS. 9A and 9B, the information terminal display device 210 includes an upper housing 241 and a lower housing 242. The rail devices 260 are respectively disposed on both side surfaces of the upper housing 241 and the lower housing 242. The screen 243 of the upper housing 241 extends to the edge of the outer periphery of the housing. Similarly, the screen 244 of the lower housing 242 extends to the edge of the outer periphery of the housing. In recent years, since the rigidity of the housing has increased, even if the screens 243 and 244 are arranged at the edge of the periphery as described above, the screens 243 and 244 are hardly damaged. Therefore, the upper casing 241 and the lower casing 242 are not provided with a cover that protrudes from the upper surface or the rear surface as shown in the first embodiment.

  As shown in FIG. 9A, when one end of the upper casing 241 and the other end of the lower casing 242 are brought together, the two screens 243 and 24 are almost connected. . As a result, it can be handled as if it were one screen. On the other hand, as shown in FIG. 9B, the upper and lower casings 241 and 242 can be overlapped in the direction perpendicular to the plane. Note that power supply and signal communication between the upper and lower housings 241 and 242 may be performed wirelessly, or a film-like cable may be provided separately. In particular, it is also preferable to supply power or communicate via the slider by providing conductivity to the slider described later.

  The rail device 260 includes a pair of rail blocks 260A and 260B. Each of the rail blocks 260A and 260B includes a central moving body 263.

  Next, the detailed structure of the rail device 260 will be described.

  10A to 10C schematically show only the rail block 260A. Here, for convenience in explaining the relative movement relationship, the central moving body 263 is illustrated by a solid line, and the upper housing 241 and the lower housing 242 are illustrated by dotted lines.

  A first guide path 272, a second guide path 274, and a third guide path 276 are formed in the central moving body 263. In addition, first to third sliders 282, 284, and 286 guided by the first to third guide paths 272, 274, and 276 are directly disposed on the upper housing 241. Therefore, in the present embodiment, the upper casing 241 also serves as the other moving body that moves relative to the one central moving body 263.

  The first guide path 272 includes a first straight path 272A and a first vertical path 272B. The second guide path 274 includes a second straight path 274A and a second vertical path 274B. The third guide path 276 includes a third straight path 276A and a third vertical path 276B. In this configuration example, the first to third straight paths 272A, 274A, 276A share one groove 271 and space saving is achieved. Accordingly, the first to third vertical paths 272B, 274B, and 276B are arranged to branch from the groove 271. As a result, the movement trajectory is bent from the first to third straight paths 272A, 274A, 276A. In particular, here, the first to third straight paths 272B, 274B, and 276B are guided by the continuous portions of the first to third straight paths 272A, 274A, and 276A in the direction perpendicular to the plane. A partial arc-shaped guide locus that returns to the side of 272A, 274A, 276A is drawn.

  Further, a linear extended guide path 279 is formed in the central moving body 263. The extended guide path 279 is disposed at a position overlapping with the first to third guide paths 272, 274, 276 in the longitudinal direction. On the other hand, two extension sliders 289 guided by the extension guide path 279 are arranged in the lower housing 242. The two expansion sliders 289 are guided along the expansion guide path 279, so that the lower casing 242 and the central moving body 263 move in parallel without relative rotation. The extension slider 289 and the extension guide path 279 serve to extend the movement stroke in the linear direction of the first to third straight paths 272A, 274A, 276A.

  According to the rail device 260 of the information terminal display device 210, first, as shown in FIG. 10A, the first to third sliders 282, 284, and 286 of the upper housing 241 that also serves as a moving body It moves to the ends of the first to third straight paths 272A, 274A, 276A (ends on the opposite side to the portions continuous with the first to third vertical paths 272B, 274B, 276B). Further, the expansion slider 289 of the lower housing 242 moves to the end of the expansion guide path 279 on the first to third vertical paths 272B, 274B, 276B side. As a result, the upper casing 241 and the lower casing 242 overlap and are folded compactly.

  Next, as shown in FIG. 10B, the first to third sliders 282, 284, 286 of the upper housing 241 are connected to the first to third straight paths 272A, 274A, 276A and the first to third sliders. It moves to a continuous point with the vertical paths 272B, 274B, 276B. Further, the expansion slider 289 of the lower housing 242 moves to the end portions of the first to third straight paths 272A, 274A, 276A in the expansion guide path 279. As a result, the upper housing 241 and the lower housing 242 slide in the surface direction, so that the upper surface of the lower housing 242 is exposed. At this time, a gap S is secured between the inner edge of the upper housing 241 and the inner edge of the lower housing 242. Finally, as shown in FIG. 10C, the first to third sliders 282, 284, and 286 of the upper housing 241 move along the first to third vertical paths 272B, 274B, and 276B. This movement locus forms a guidance locus that returns to the first to third straight paths 272A, 274A, 276A side while moving in the direction perpendicular to the plane. That is, the heights of the upper surface of the upper housing 241 and the upper surface of the lower housing 242 coincide with each other, and the gap S between the inner edge of the upper housing 241 and the inner edge of the lower housing 242 becomes zero. Abut. Accordingly, it is possible to reliably avoid interference between the upper casing 241 and the lower casing 242 during the sliding operation.

  In the second embodiment, the first to third vertical paths 272B, 274B, and 276B are bent in the surface vertical direction at one end side of the first to third straight paths 272A, 274A, and 276A. -Although the case where the guide locus | trajectory of a partial arc shape which returns to the 3rd straight path 272A, 274A, 276A side was illustrated was illustrated, it is not limited to this.

  For example, as in the modification of the second embodiment shown in FIG. 11, the continuous portions of the first to third vertical paths 272B, 274B, 276B and the first to third straight paths 272A, 274A, 276A are 90 degrees or more. Rather than bending, it is preferable that the continuous portion draws a partial arc-shaped guide locus of less than 90 degrees. In this way, the slide operation becomes smooth and the operability is improved. However, in such a smooth bending, the upper casing 241 and the lower casing 242 interfere with each other, so that an inclined surface that is thin on the edge side and gradually increases in thickness on the end of the upper casing 241. It is preferable to form 241A. As a result, as shown in FIGS. 11B to 11C, the first to third sliders 282, 284, and 286 are connected to the first to third straight paths 272A, 274A, 276A and the first to third vertical paths. When moving the continuous portion of 272B, 274B, 276B, the edges of the upper housing 241 and the lower housing 242 are finally applied while avoiding interference between the upper housing 241 and the lower housing 242. Can be touched. As a result, it is possible to bring the screens close to each other.

  In the modification shown in FIG. 11, there is a possibility that the rigidity may be reduced by forming the inclined surface 241 </ b> A in the upper housing 241.

In order to compensate for this, a cover 215 protrudes from the upper surface of the lower housing 242 as in the modification shown in FIG. A structure in which the cover 215 covers the inclined surface 241A of the upper casing 241 in a state where the upper casing 241 and the lower casing 242 overlap with each other can also be employed. In addition, a cover 217 is provided on the lower surface of the upper housing 241 so as to protrude downward, and the cover 217 covers the end surface of the lower housing 242 in a state where the upper housing 241 and the lower housing 242 overlap each other. A structure can also be adopted.

  In addition to the first to third guide paths 272, 274, and 276, the central moving body 263 includes the first to third guide paths 272 and 274 as in the modification shown in FIGS. It is also preferable to form fourth to sixth guide paths P1, P2, and P3 that have a positional relationship that is point-symmetric with 276 and translated. In this case, the lower housing 242 is provided with fourth to sixth sliders Q1, Q2, and Q3 guided by the fourth to sixth guide paths P1, P2, and P3.

  In this way, the lower housing 242 can also serve as a moving body, and the lower housing 242 can also move in a direction perpendicular to the central moving body 263. As a result, the joint stroke in the surface vertical direction of the upper housing 241 and the lower housing 242 can be increased, so that the central moving body 263 can be configured more compactly. Therefore, it is suitable for a small information display terminal such as a smartphone.

  Furthermore, it is preferable to provide retractable protective covers 241A and 242A for each of the upper casing 241 and the lower casing 242 as in the modification shown in FIGS. The retractable protective covers 241A and 242A are accommodated in an overlapping state in the accommodating spaces 241C and 242C of the upper casing 241 and the lower casing 242. The retractable protective covers 241A and 242A are used to protect the edges of the screens 243 and 244 of the upper casing 241 and the lower casing 242. A rail device 860 is installed between the retractable protective covers 241A and 242A, and the upper casing 241 and the lower casing 242.

  The rail device 860 is formed on the first guide path 872 and the second guide path 874 formed on the housing spaces 241C and 242C side, and on the retractable protective cover 241A and 242A side, and is formed on the first and second guide paths 872 and 874. Are provided with first and second sliders 882 and 884. Therefore, in the present embodiment, the retractable protective cover 241A moves relative to the upper casing 241 and the retractable protective cover 242A moves relative to the lower casing 242. Note that the retractable protective covers 241A and 242A have step portions 241B and 242B for pulling out the retractable protective covers 241A and 242A by hooking a fingertip. Further, a tension spring 290, which is a kind of elastic member, is installed between the retractable protective cover 241A, 242A and the accommodating space 241C, 242C, and the retractable protective cover 241A, 242A is pulled into the accommodating space 241C, 242C. .

  The first guide path 872 and the second guide path 874 are configured to have an inversion path that is inverted in a U-shape at the end of a straight path extending in the horizontal direction. In particular, in the present embodiment, the first guide path 872 is shifted to the reverse path side in the horizontal direction and shifted to the reverse direction side in the vertical direction as compared to the second guide path 874. If this state is expressed by another method, the first slider 882 always maintains an advanced position with respect to the second slider 884 with respect to the direction in which the retractable protective covers 241A and 242A are pulled out from the accommodation spaces 241C and 242C. Further, the first slider 882 always maintains a position delayed with respect to the second slider 884 with respect to the direction in which the retractable protective covers 241A and 242A are accommodated in the accommodating spaces 241C and 242C. In this way, relative rotation between the retractable protective covers 241A and 242A and the accommodation spaces 241C and 242C is suppressed.

  In this modified example, as shown in FIGS. 15A and 16A, in a state where the upper housing 241 and the lower housing 242 are overlapped by the rail device 260, the retractable protection is performed by the rail device 860. The edges of the upper casing 241 and the lower casing 242 are protected by pulling out the covers 241A and 242A. Further, as shown in FIGS. 15B and 15C and FIGS. 16B and 16C, when the upper casing 241 and the lower casing 242 are slid by the rail device 260 and both are expanded. The retractable protective covers 241A and 242A can be accommodated in the upper casing 241 and the lower casing 242 by the rail device 860, and the screens 243 and 244 of both can be brought close to each other. Thus, the rail device according to the present invention can be used in various parts and applications of electronic equipment.

  Next, a configuration of the rail device 360 of the information terminal display device 310 according to the third embodiment will be described with reference to FIG. 17 and subsequent drawings. Here, the description will focus on the differences from the second embodiment.

  As shown in FIG. 17, the information terminal display device 310 includes an upper housing 341 and a lower housing 342. The rail device 360 is disposed on both side surfaces of the upper housing 341 and the lower housing 342, respectively. The screen 343 of the upper housing 341 extends to the edge of the outer periphery of the housing. Similarly, the screen 344 of the lower housing 342 extends to the edge of the outer periphery of the housing.

  As shown in FIG. 18, when one end of the upper casing 341 and the other end of the lower casing 342 are brought together, the two screens 343 and 34 are almost connected. As a result, it can be handled as if it were one screen. On the other hand, as shown in FIG. 17, the upper and lower housings 341 and 342 can be overlapped in the direction perpendicular to the plane. The rail device 360 includes a pair of rail blocks 360A and 360B. Each of the rail blocks 360 </ b> A and 360 </ b> B includes a central moving body 363.

  Next, the detailed structure of the rail device 360 will be described.

  19A to 19C schematically show only the rail block 360A as a cross-sectional view taken along the arrow WW in FIG. Here, for convenience of describing the relative movement relationship, the central moving body 363 and the upper moving body 362 are illustrated by solid lines, and the upper housing 341 and the lower housing 342 are illustrated by dotted lines.

  A first guide path 372 and a second guide path 374 are formed in the central moving body 363. In addition, an upper moving body 362 is provided in the upper housing 341. The upper moving body 362 is provided with first and second sliders 382 and 384 that are guided by the first and second guide paths 372 and 374. Therefore, in the present embodiment, the upper housing 341 moves relative to the central moving body 363 via the upper moving body 362.

  The first guide path 372 includes a first straight path 372A and a first vertical path 372B. The second guide path 374 includes a second straight path 374A and a second vertical path 374B.

  In particular, in the present embodiment, the first guide path 372 is shifted to the second vertical path 374B side in the plane direction as compared to the second guide path 374, and is shifted to the protruding end side of the second vertical path 374B in the plane vertical direction. ing. If this state is expressed by another method, the first slider 382 maintains a position that is always advanced with respect to the normal direction V1 (vector V1) of the movement locus with respect to the second slider 384, or vice versa. The position always delayed with respect to the guide direction V2 (vector V2) is maintained. In this way, since the virtual link L1 connecting the first slider 382 and the second slider 384 and the guide trajectories of the first and second guide paths 372 and 374 are not always perpendicular, the intermediate moving body 363 can be maintained. And the relative rotation of the upper moving body 362 is suppressed. For reference, in the case of the first and second sliders 182 and 184 already shown in FIGS. 5A and 5B, a bending locus is drawn with respect to the normal guide direction V1 (vector V1) of the movement locus. The front-rear relationship between the first slider 182 and the second slider 184 is reversed at the moment.

  By the way, in order to make the central moving body 363 compact, when the first guide path 372 and the second guide path 374 are brought closer, as shown in FIG. 19, the first vertical path 372B and the second vertical path are arranged. Since the guide trajectories of 374B intersect, it is difficult to form the first and second guide paths 372 and 374 in the same plane. Therefore, in this embodiment, as shown in FIGS. 17 and 18, the intermediate moving body 363 has a two-row structure, the first guide path 372 is formed in one row, and the second guide path 374 is formed in the other row. Form. These two rows are integrated by a connecting plate 366 on the bottom surface side. The upper moving body 362 having the first and second sliders 382 and 384 is inserted in the middle of the two rows of the intermediate moving body 363.

  Returning to FIG. 19, a linear extension guide path 379 is formed in the central moving body 363. On the other hand, two extension sliders 389 guided by the extension guide path 379 are arranged in the lower housing 342. The extension slider 389 and the extension guide path 379 extend the movement stroke in the linear direction of the first and second straight paths 372A and 374A.

  As described above, according to the rail devices of the first to third embodiments, the first movement trajectory of the first guide path by the first slider and the second movement trajectory of the second guide path by the second slider have the same trajectory shape. In addition, since the relative positional relationship is shifted, it is possible to slide the first slider and the second slider while maintaining the parallelism of the upper housing and the lower housing by sliding each of the first slider and the second slider. Yes.

  In particular, in the rail device shown in FIG. 8 and the rail device of the third embodiment, the virtual link linking the first slider and the second slider during sliding, and the guiding directions of the first and second guide paths are always constant. Since it is set so that it does not become a right angle, the relative rotation of one moving body and the other moving body is suppressed, and a stable slide can be realized. Also, in other rail devices, since a restriction member for restricting the rotation of the one moving body and the other moving body is arranged at a point where the guiding direction of the virtual link and the first and second guide paths is a right angle, Similarly, relative rotation can be suppressed. In the above embodiment, the case where the third guide path having a different movement track from the first and second guide paths is provided, and the relative rotation is regulated by the engagement between the third guide path and the third slider is exemplified. In this way, relative rotation can be prevented while maintaining a smooth slide. On the other hand, the restricting member of the present invention is not limited to this, and the protrusion is partially provided so as to restrict the rotation, and the shapes of the first and second sliders and the first and second guide paths are restricted from being rotated. The shape may be changed. For example, as shown in FIGS. 20A and 20B, if the first and second sliders 182 and 184 are rectangular, and the guide walls of the bent portions of the first and second guide paths 172 and 174 are perpendicular to each other. These themselves serve as regulating members and can suppress relative rotation. For example, as shown in FIGS. 20C and 20D, the first and second sliders 182 and 184 are parallelograms, and the bent portions of the first and second guide paths 172 and 174 are also parallelograms. If the guide wall is suitable, the vertical road side can be inclined and a smooth slide can be realized.

  In this embodiment, the rail device includes a pair of rail blocks. However, the present invention is not limited to this, and only one rail block may be used. Moreover, in this embodiment, although the case where the 1st-3rd guideway, the 1st-3rd slider, etc. were collectively arrange | positioned to one rail block was illustrated, this invention is not limited to this. For example, by arranging the first guide path in one rail block and the second guide path in the other rail block, the entire rail device may exhibit the same function as the present embodiment. .

110, 210, 310 Display device for information terminal 141, 241, 341 Upper housing 142, 242, 342 Lower housing 143, 144, 243, 244, 343, 344 Screen 160, 260, 360, 860 Rail device 162 Inside Moving body 164 Outer moving body 263, 363 Central moving body 362 Upper moving body 172, 272, 372 First guide path 174, 274, 374 Second guide path 176, 276, 376 Third guide path 182, 282, 382 First Slider 184, 284, 384 Second slider 186, 286, 386 Third slider

Claims (11)

Provided in an electronic device including an upper housing located on the upper side and a lower housing arranged in a state of being overlapped with or under the upper housing, and identifies the upper housing and the lower housing The upper housing and the lower housing are slid relative to each other in a vertical direction perpendicular to the specific direction at one end of the slide in the specific direction. A rail device,
A first slider;
A first linear path that linearly guides the first slider in the specific direction, and a first vertical path that is continuously provided at one end of the first linear path and guides the first slider in the vertical direction. A first guideway having,
A second slider;
A second linear path that linearly guides the second slider in the specific direction; and a second vertical path that is continuously provided at one end of the second linear path and guides the second slider in the vertical direction. A second guideway,
The first movement trajectory of the first guide path by the first slider and the second movement trajectory of the second guide path by the second slider have the same trajectory shape and the relative positional relationship is deviated.
The first slider and the second slider are integrated into one moving body, and the first guide path and the second guide path are integrated into the other moving body, and the one moving body and the other moving body are integrated. Using relative motion, slide the upper housing and the lower housing, or
The first slider and the second guide path are integrated to form one moving body, the second slider and the first guide path are integrated to form the other moving body, and the one moving body and the other moving body are integrated. Using relative motion, slide the upper housing and the lower housing ,
When a line connecting the first slider and the second slider in the slide is defined as a virtual link,
The virtual link, the first and the guiding direction of the second guideway Ru always set so as not to be a right angle,
A rail device for electronic equipment, characterized in that Provided in an electronic device including an upper housing located on the upper side and a lower housing arranged in a state of being overlapped with or under the upper housing, and identifies the upper housing and the lower housing The upper housing and the lower housing are slid relative to each other in a vertical direction perpendicular to the specific direction at one end of the slide in the specific direction. A rail device,
A first slider;
A first linear path that linearly guides the first slider in the specific direction, and a first vertical path that is continuously provided at one end of the first linear path and guides the first slider in the vertical direction. A first guideway having,
A second slider;
A second linear path that linearly guides the second slider in the specific direction; and a second vertical path that is continuously provided at one end of the second linear path and guides the second slider in the vertical direction. A second guideway,
The first movement trajectory of the first guide path by the first slider and the second movement trajectory of the second guide path by the second slider have the same trajectory shape and the relative positional relationship is deviated.
The first slider and the second slider are integrated into one moving body, and the first guide path and the second guide path are integrated into the other moving body, and the one moving body and the other moving body are integrated. Using relative motion, slide the upper housing and the lower housing, or
The first slider and the second guide path are integrated to form one moving body, the second slider and the first guide path are integrated to form the other moving body, and the one moving body and the other moving body are integrated. Using relative motion, slide the upper housing and the lower housing,
When a line connecting the first slider and the second slider in the slide is defined as a virtual link,
A restricting member that restricts rotation of the one moving body and the other moving body is disposed at a point where the guiding directions of the virtual link and the first and second guide paths are perpendicular to each other. Item 9. The rail device for electronic equipment according to Item 1. As the regulating member,
A third slider;
A third linear path that linearly guides the third slider in the specific direction, and a third vertical path that is continuously provided at one end of the third linear path and guides the third slider in the vertical direction. A third guideway having,
The third movement trajectory of the third guide path by the third slider has the same trajectory shape as the first and second movement trajectories, and the relative positional relationship is deviated from the first and second movement trajectories. ,
The rail device for an electronic device according to claim 2 , wherein the rail device is an electronic device. In the case where the first slider and the second slider are integrated into one moving body, and the first guide path and the second guide path are integrated into the other moving body,
The first guide path is shifted to one end side of the second straight path and shifted to the projecting end side of the second vertical path with respect to the second guide path.
The virtual link, the first and the guiding direction of the second guideway, characterized always be set so as not to a right angle, the rail device for an electronic device according to claim 1. In the case where the first slider and the second guide path are integrated into one moving body, and the second slider and the first guide path are integrated into the other moving body,
In the one moving body, the first slider is disposed at a place beyond one end side of the second straight path in the second guide path and a place beyond the protruding end of the second vertical path,
In the other moving body, the second slider is disposed at a location exceeding one end side of the first straight path in the first guide path and a location exceeding the protruding end of the first vertical path.
The virtual link, the first and the guiding direction of the second guideway, characterized always be set so as not to a right angle, the rail device for an electronic device according to claim 1. The first and second guide paths form a partial arc-shaped guide locus in a continuous portion of the first and second straight paths and the first and second vertical paths. 6. A rail device for an electronic device according to any one of 5 above. The first and second vertical paths in the first and second guide paths guide the other end of the first and second straight paths while guiding in the vertical direction on one end side of the first and second straight paths. The rail device for electronic equipment according to any one of claims 1 to 6 , wherein a guide locus returning to the side is formed. A rail device according to any one of claims 1 to 7 ,
Comprising the electronic device,
An upper screen is disposed on the upper surface of the upper housing, and a lower screen is disposed on the upper surface of the lower housing,
When the upper casing and the lower casing are relatively slid in the specific direction and are relatively slid in the vertical direction by the rail device, the height of the upper screen and the lower screen is increased. Characterized by matching
Display device for information terminals.   An upper screen cover covering an end of the upper screen;
  A lower screen cover that covers an end of the lower screen,
  The upper screen cover is housed in the upper housing,
  The lower screen cover is housed in the lower housing.
  The information terminal display device according to claim 8, wherein the display device is an information terminal display device.   An upper screen cover covering an end of the upper screen;
  A lower screen cover that covers an end of the lower screen,
  The upper screen cover is provided protruding from the front side of the lower casing, and the lower screen cover is provided protruding from the rear side of the upper casing,
  When the upper casing and the lower casing are overlapped, the upper screen cover covers the end of the upper screen, and at the same time, the lower screen cover covers the end of the lower screen.
  The information terminal display device according to claim 8, wherein the display device is an information terminal display device.   The rail device according to any one of claims 1, 2, and 4,
  Comprising the electronic device,
  A screen is disposed on the upper housing;
  The lower casing is a cover that covers an end of the screen, and is stored in a state of being overlapped with the upper casing.
  The rail device causes the upper housing and the cover to slide relative to each other in the specific direction, and the cover covers an end of the screen when the rail device slides relative to the vertical direction. And
  Display device for information terminals.

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