JP4875518B2 - Foldable mobile terminal - Google Patents

Description

  The present invention relates to a foldable mobile terminal, and more particularly to a device that supports a display unit so as to be switchable between a vertically long state and a horizontally long state.

  In recent years, there has been a trend of viewing television on the go using a foldable mobile phone. The display unit of a foldable mobile phone is generally in a vertically long state when held in a hand. For this reason, when the television is viewed in a vertically long state, the entire screen becomes small. Conventionally, there is a conflicting demand between making a foldable mobile phone as small as possible from the aspect of portability and wanting to view a TV screen from the viewpoint of viewability.

  If the screen is switched to the landscape state with the mobile phone itself placed sideways, the screen can be displayed in full. In order to place the mobile phone display sideways, at present, the handheld mobile phone can be held in a horizontally long state rotated 90 degrees horizontally, or the folding mobile phone can be turned sideways by a special holding means. It is necessary to leave it in a stable state and maintain a stable state. However, it is difficult to continue watching TV while holding the mobile terminal in hand, and it is not easy to find suitable holding means on the go.

  Therefore, it is relatively stable if the display unit provided on the upper casing of the folding cellular phone is rotated 90 degrees laterally with respect to the lower casing, and the lower casing is left in contact with the installation surface. And can be installed for viewing.

  For example, in the foldable portable terminal of Patent Document 1, the display unit is supported on the first casing so as to be switchable from the vertically long state to the horizontally long state while the mobile phone itself is held vertically. In this foldable portable terminal, a support shaft is provided perpendicularly to the display unit at the center of the display unit, and the display unit is rotated 90 degrees around the support shaft.

  The mobile terminal of Patent Document 2 includes a first casing provided with a large number of key input units and a second casing provided with a display unit capable of displaying characters and images, and one end of the mobile terminal is folded with the first casing. A coupling member that is hingedly coupled to the first casing and coupled so that the other end thereof is in contact with one area of the second casing, and is provided between one area of the second casing and the other end of the coupling member. Rotating means for rotating the second casing within a predetermined angle range along the contact surface with the connecting member, and an image displayed on the display unit when the second casing is rotated by the rotating means. A signal processing device that performs a function of converting the signal. In this mobile terminal, the position of the display unit is converted in the vertical and horizontal directions, and the size of the displayed image is also changed.

  As shown in Patent Document 3, a foldable mobile terminal having a support mechanism that supports a display unit in a slidable and rotatable manner on a first housing is known. In this foldable portable terminal, the display unit is slid up and down and then rotated around the support shaft provided at the center of the display unit. The contact with the bulging part provided in can be avoided, and the display part can be enlarged.

On the other hand, as disclosed in Patent Document 4, a first housing having a display portion on the surface, a second housing having an operation portion on the surface, a first housing, and a second housing. The display unit is supported by the first housing through a support mechanism so as to be switchable between a vertically long state and a horizontally long state, and the support mechanism includes: There is known a device that guides and supports switching of the display unit between the vertically long state and the horizontally long state so that the lower end side corner of the display unit moves along the hinge during the switching operation of the display unit.
JP 2001-156893 A JP 2003-114670 A JP 2003-319043 A Japanese Patent Laid-Open No. 2006-21576

  In the above conventional example, the rotating mechanism of the display unit is provided on the back side, and the display unit is rotated from the vertically long state to the horizontally long state only in one direction, and the position of the display unit is converted into the vertical and horizontal directions and displayed. The size of the image to be changed is also changed.

  However, it is expected that the right-handed user and the left-handed user will be different in whether the display unit is easy to operate in the clockwise or counterclockwise direction when viewed from the surface. Also, it is expected that it is easy to operate in the clockwise direction or the counterclockwise direction depending on whether it is held in the right hand or the left hand.

  In the configurations as shown in Patent Documents 1 and 2, the display unit is supported by only one support pin with respect to the first housing, and thus can be operated in both clockwise and counterclockwise directions. Although it is not difficult to make the display unit switchable between the portrait state and the landscape state, it is necessary to round the corners of the display unit to prevent the display unit from coming into contact with the hinge portion, and the display screen is reduced. There's a problem.

  Also in the invention of Patent Document 3, since the display unit is supported by only one support pin with respect to the first housing, the display unit can be viewed in both clockwise and counterclockwise directions. It is not difficult to switch between the vertical and horizontal states, and the display unit is once slid upward during vertical and horizontal switching, so the corners of the display unit must be rounded to avoid contact with the hinge unit. Also good. However, an extra operation of sliding the display unit that has been slid after rotating the display unit again to return it to its original state is necessary, and the operation becomes complicated.

  On the other hand, in the invention of Patent Document 4 described above, since the cam mechanism is used, the display unit does not contact the hinge unit even if the display unit is enlarged, but it can rotate in either the clockwise or counterclockwise direction. If it tries to do, since the shape of a groove | channel becomes large, there exists a problem that the magnitude | size of the whole folding portable apparatus will become large and portability will worsen.

  The present invention has been made in view of the above points, and an object of the present invention is to prevent the overall size from increasing while keeping the screen of the display unit large, and to watch the display unit from the surface. An object is to enable rotation from a vertically long state to a horizontally long state in both directions of rotation and counterclockwise.

  In order to achieve the above object, in the present invention, the display unit is supported by the cam mechanism so as to be rotatable from the vertically long state to the horizontally long state in both the clockwise and counterclockwise directions when viewed from the surface.

In the first invention, a first housing having a display portion on the surface;
A second housing having an operation portion on the surface;
A hinge portion that folds and connects the first housing and the second housing so as to be freely opened and closed;
The display unit is intended for a foldable portable terminal that is supported by the first casing through a support mechanism so as to be switchable between a vertically long state and a horizontally long state.

And the support mechanism is
A first guide groove provided in the first housing and including a continuous left side portion having a middle convex shape and a right side portion having a middle convex shape;
A second guide groove provided at a position above or below the first guide groove of the first housing and extending in the vertical direction ;
A first guide pin slidably engaged with the first guide groove;
A second guide pin slidably engaged with the second guide groove;
A connecting member that is provided on the back side of the display unit and connects the first guide pin and the second guide pin;
Comprising a cam mechanism with
The display unit is supported by the cam mechanism so as to be rotatable in both clockwise and counterclockwise directions when viewed from the surface.

According to said structure, the 1st guide groove has a shape which the gull spread the blade | wing seeing from the surface. The second guide groove is provided at a position above or below the first guide groove in the first housing and extends in the vertical direction. In the vertically long state, the first guide pin is located at the left and right intermediate point of the first guide groove, and the second guide pin is located in the middle of the second guide groove. When the display unit is switched from the vertically long state to the horizontally long state as viewed from the surface, the convex portion of the left portion of the first guide groove is engaged with the first guide groove by the cam mechanism. At the same time, the second guide pin slides upward while being engaged with the second guide groove. When the convex portion is exceeded, the first guide pin slides to the left while descending downward, and at the same time, the second guide pin slides downward with the second guide groove engaged. Conversely, when the display unit is switched from the vertically long state to the horizontally long state counterclockwise when viewed from the surface, the first guide groove is engaged with the first guide pin by the cam mechanism. At the same time, the second guide pin slides upward with the second guide pin engaged with the second guide groove. When the convex portion is exceeded, the first guide pin slides rightward while descending downward, and at the same time, the second guide pin slides downward with the second guide groove engaged.

  As described above, since the display unit is supported by the cam mechanism so as to be rotatable in both the clockwise direction and the counterclockwise direction when viewed from the surface with respect to the first housing, The display unit is rotated in the preferred rotation direction to switch between the vertically long state and the horizontally long state. In addition, since the display unit rotates while moving up and down by the cam mechanism, the display unit does not come into contact with the hinge unit or the bulging portion at the lower end of the first housing even if the display screen is kept large. Furthermore, suppression of the whole size is performed by appropriately arranging the first and second guide grooves.

In the second invention, in the first invention,
The first guide groove is formed symmetrically,
The second guide groove extends substantially vertically above an intermediate point connecting the left side portion and the right side portion of the first guide groove.

  According to the above configuration, since the first guide grooves are formed symmetrically, the display unit rotates in the same manner in both the clockwise and counterclockwise directions when viewed from the surface. Further, since the first and second guide grooves are symmetrical, the arrangement of the grooves is easy.

In the third invention, in the first or second invention,
In the left and right portions of the first guide groove, the length from the intermediate point to the intermediate convex portion is longer than the length from the intermediate point to the outer end portion.

  According to said structure, since the width | variety of the left-right direction of a 1st guide groove can be shortened, it is prevented that the whole magnitude | size becomes large. Further, when the display unit is rotated, the first guide groove can be easily prevented from appearing in the appearance.

In a fourth invention, in any one of the first to third inventions,
The cam mechanism is configured such that when the display unit is switched while rotating clockwise, the lower right corner portion of the display unit is switched. When the display unit is switched while rotating counterclockwise, the cam mechanism is switched. A corner portion on the lower left side of the display unit is configured to guide and support switching of the display unit between the vertically long state and the horizontally long state so as to move along the hinge portion.

  According to the above configuration, the cam mechanism is switched while being guided and supported so that the right or left lower-end corner portion of the display portion moves along the hinge portion in both clockwise and counterclockwise directions. For this reason, since the display unit moves while maintaining a gap between the hinge unit and the display unit, the display unit can be connected to the hinge unit without rounding the lower end of the display unit along the radius around the support shaft as in the past. And no contact with the bulging portion at the lower end of the first housing.

In a fifth invention, in any one of the first to fourth inventions,
The center part in the left-right direction in the vertically long state and the horizontally long state of the display unit is positioned substantially at the center in the left-right direction of the first casing.

  That is, when a support shaft for supporting the display unit on the first housing is provided at the center of the display unit as in the prior art, the left-right central portion is placed in the first housing when the display unit is in the horizontally long state. If it is going to be positioned at the substantially horizontal center, the upper end side of the display unit in the vertically long state needs to be lowered in accordance with the lower end side, and the size of the entire display unit is reduced. However, in the present invention, the cam mechanism can also guide the display portion so as not to contact the hinge portion or the bulging portion at the lower end of the first housing when the display portion is switched to the vertically long state or the horizontally long state. Thus, it is not necessary to provide the support shaft in the upper and lower central portions. For this reason, without lowering the upper end side of the display unit in the vertically long state, the display unit is positioned at the center in the left-right direction with respect to the first housing not only in the vertically long state but also in the horizontally long state. It is located in the center in the left-right direction with respect to the operation unit.

In a sixth invention, in any one of the first to fifth inventions,
The cam mechanism is provided with an urging mechanism for urging the display unit to be in a vertically long state or a horizontally long state in any rotation direction by urging the connecting member.

  According to the above configuration, since the rotation of the display unit is assisted by the urging mechanism, the user can rotate the display unit in either the vertically long state or the horizontally long state with one hand.

In a seventh invention, in the sixth invention,
The biasing mechanism is
A spring support pin swingably provided on the first housing;
A compression spring inserted into the spring support pin;
A pin pressing rod having an intermediate portion rotatably supported by the first housing, one end abutting on the connecting member, and the other end abutting on the compression spring;
It has.

  According to the above configuration, when the display unit is switched from the vertically long state to the horizontally long state when viewed from the surface, the first guide pin moves leftward from the middle point of the first guide groove toward the convex portion of the left side portion. Since the second guide pin is slid upward with the second guide pin engaged with the second guide groove, the intermediate portion is rotatably supported by the first casing by the connecting member. The left and right inner ends of the pin pressing bar are pressed upward, the opposite outer end moves downward, and the compression spring is compressed. When the convex portion is exceeded, the outer end portion of the pin pressing rod is pressed upward by the urging force of the compressed compression spring, the opposite inner end portion is pressed downward, and the second guide pin is pressed downward. Therefore, the display unit is rotated while being assisted, and is in a horizontally long state.

  Conversely, when switching from the horizontally long state to the vertically long state, the first guide pin slides rightward from the left end portion of the first guide groove toward the convex portion of the left side portion, and at the same time, the second guide pin 2 Since it slides upward while engaged with the guide groove, the right and left inner ends of the pin pressing rod are pressed upward by the connecting member, the opposite outer end moves downward, and the compression spring is compressed. Is done. When the convex portion is exceeded, the outer end portion on the opposite side of the pin pressing bar is pressed upward by the urging force of the compressed compression spring, and the second guide pin is pressed downward, so that the display portion is rotated while being assisted. And it becomes a vertically long state.

  Similarly, when the display unit is switched from the vertically long state to the horizontally long state counterclockwise when viewed from the surface, the display unit is rotated while compressing the compression spring until the convex part is exceeded. It is switched while being assisted by a spring. Conversely, when switching from the horizontally long state to the vertically long state, the display unit is rotated while compressing the compression spring until the convex portion is exceeded, and when the convex portion is exceeded, switching is performed while being assisted by the compression spring.

  In this way, by levering the principle of the lever, the biasing force of the compression spring is reduced and transmitted to the connecting member via the pin pressing rod, thereby assisting the rotation operation of the display unit in a narrow space while reducing the stroke of the compression spring. Is possible.

In the eighth invention, in the seventh invention,
The connecting member is provided with a disk member having a sliding groove formed on the outer periphery on which one end side of the pin pressing rod slides,
The disk member is fixed to the back side of the display unit.

  According to the above configuration, the sliding groove portion prevents the pin pressing rod from coming off the disc member and the urging force from the pin pressing rod is reliably transmitted to the disc member fixed to the display portion. The switching operation is surely assisted by the urging mechanism.

In the ninth invention, in the eighth invention,
A pair of the urging mechanisms are provided.

  That is, when only one pin pressing rod is provided, the contact position between the pin pressing rod and the disk member is moved by moving the connecting member up and down, and the urging force from the pin pressing rod is changed. Although unevenness occurs, according to the above configuration, when the biasing force from the pair of pin pressing rods is large when one is large, the total unevenness of the biasing force is small, and the rotation of the display unit is reduced. It is performed stably.

In a tenth aspect, in the ninth aspect,
A pair of the spring support pins are provided symmetrically on the upper side of the first housing,
The pair of pin pressing bars press the disk member from above.

  According to the above configuration, the pair of pin pressing bars press the disk member from the upper side of the disk member, so that the movement of the first and second guide pins is inhibited during the rotation operation of the display unit. There is no.

In an eleventh aspect, in the tenth aspect,
The first housing is
A first housing body constituting a part of the hinge portion;
A guide plate fixed to the first housing body and having the first guide groove and the second guide groove formed thereon,
The pair of pin pressing rods are respectively supported above the left and right end portions of the first guide groove of the guide plate.

  According to the above configuration, the first and second guide pins and the urging mechanism are accurately arranged in a narrow region by providing the first and second guide grooves and the support position of the pin pressing rod in the guide plate. . Alternatively, the guide plate can be unitized with the connecting member and the biasing mechanism attached thereto, and the unitized guide plate can be attached to the first housing body.

In a twelfth invention, in any one of the first to eleventh inventions,
The first housing is open with respect to the second housing, and can be placed with the second housing down in both the horizontally long state and the vertically long state. .

  According to the above configuration, it is possible to view a television or the like in a horizontally long state without using a means for supporting the foldable portable terminal even when away from home.

In a thirteenth invention, in any one of the first to twelfth inventions,
The foldable mobile terminal is a mobile phone.

  According to the above configuration, in a mobile phone that is multifunctional and frequently used, it is easy to switch the landscape or portrait state in both the clockwise and counterclockwise directions when viewed from the surface.

As described above, according to the present invention, the left-handed person is supported by rotating in both the clockwise and counterclockwise directions as viewed from the surface while adjusting the trajectory of the display unit by the cam mechanism. And right-handed people can rotate from a portrait orientation to a landscape orientation in the preferred direction. In addition, the direction of rotation when held in the right hand and when held in the left hand can be freely selected. Further, in the first housing, the first guide groove including a continuous left side portion of the middle convex shape and the right side portion of the middle convex shape, and the vertical direction extends to a position above or below the first guide groove. By arranging the second guide groove , the overall size can be easily suppressed. Therefore, it is possible to suppress the overall size while keeping the screen of the display unit large and to rotate the display unit from the vertically long state to the horizontally long state in both the clockwise and counterclockwise directions when viewed from the surface. it can.

  According to the second aspect of the invention, the first guide grooves are formed symmetrically to facilitate the arrangement of the grooves, and are rotated in the same manner regardless of the direction of rotation. For this reason, while being able to suppress the whole magnitude | size easily, operativity can be improved.

  According to the third aspect of the present invention, the length from the intermediate point to the intermediate convex portion is longer than the length from the intermediate point to the outer end portion in the left side portion and the right side portion of the first guide groove, The width of the first guide groove in the left-right direction is shortened. For this reason, it can suppress that the whole magnitude | size becomes large easily, and it can prevent that a 1st guide groove appears in an external appearance and can improve an external appearance.

  According to the fourth aspect of the present invention, the cam mechanism allows the hinge part to move the left and right lower corners along the hinge part in both the clockwise and counterclockwise rotation directions when viewed from the surface. The display unit is switched between the horizontally long state and the vertically long state while maintaining a gap between the two. For this reason, even if the shape of the display portion is substantially rectangular, the display portion does not contact the hinge portion or the bulging portion at the lower end of the first housing, so that the display screen can be enlarged.

  According to the fifth aspect of the present invention, the cam mechanism is used to switch the display unit while preventing contact in both the clockwise and counterclockwise rotation directions when viewed from the surface, so that the vertically long state and the horizontally long state are obtained. The center part in the left-right direction of the display unit is positioned substantially at the center in the left-right direction of the first housing. For this reason, the display unit can be positioned at the center in the horizontal direction in the horizontal direction as well as in the vertical state while making the screen as large as possible, so that it looks good and the screen is easy to see and easy to operate. A foldable portable terminal is obtained.

  According to the sixth aspect of the invention, the cam mechanism is provided with the urging mechanism that urges the display member to be in the vertically long state or the horizontally long state in any rotation direction by urging the connecting member. The operation is being assisted. For this reason, in both the clockwise and counterclockwise rotation directions when viewed from the surface, the user can switch to the portrait or landscape state with one touch with only one hand. It can be carried out.

  According to the seventh aspect, the spring support pin provided with the urging mechanism swingably on the first housing, the compression spring inserted into the spring support pin, and the intermediate portion on the first housing. It consists of a pin pressing rod that is supported rotatably and has one end abutting on the connecting member and the other end abutting on the compression spring. Based on the lever principle, the biasing force of the compression spring is connected via the pin pressing rod. I tell it to the member. For this reason, since the stroke of a compression spring becomes small, while being able to improve the durability of a compression spring, rotation operation of a display part can be assisted while suppressing the size of the whole.

  According to the eighth aspect of the present invention, the connecting member is provided with the disc member having the sliding groove portion on which one end side of the pin pressing rod slides, and the disc member is fixed to the back side of the display portion so as to be removed from the pin pressing rod. The urging force is reliably transmitted to the disk member. For this reason, the switching operation of the display unit can be performed smoothly.

  According to the ninth aspect, a pair of urging mechanisms are provided, and when the urging force from one pin pressing bar is large, the other urging force is reduced so that the total unevenness of the urging force is reduced. Yes. For this reason, since the rotation of the display unit can be performed stably, the switching operation of the display unit can be performed smoothly.

  According to the tenth aspect of the invention, a pair of spring support pins are provided symmetrically on the upper side of the first housing, the disc member is pressed from the upper side with the pair of pin pressing bars, and the display unit is rotated during the rotation operation. The movement of the first and second guide pins is not hindered. For this reason, the switching operation of the display unit can be performed smoothly.

  According to the eleventh aspect of the present invention, the first and second guide grooves and the support position of the pin pressing rod are provided in the guide plate of the first housing, and the first and second guide pins and the urging force are provided in a narrow area. The mechanism is arranged. For this reason, the whole size can be suppressed and portability can be improved.

  In the twelfth aspect of the present invention, it is possible to place the folding portable terminal in the horizontally long state and the vertically long state with the second housing facing down without using a separate part. A portable terminal can be placed in an appropriate place and a television or the like can be comfortably viewed.

  According to the thirteenth aspect of the invention, since the foldable portable terminal is a mobile phone, a mobile phone having a compact and high commercial value can be obtained which is easy to switch between the horizontally long and vertically long state and has high operability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a foldable mobile phone according to an embodiment of the present invention in a folded state. FIG. 2 is a perspective view showing the foldable mobile phone with the liquid crystal display unit in a vertically long state in the opened state. FIG. 3 is a perspective view showing the foldable mobile phone when the liquid crystal display unit is in the horizontally long state in the opened state.

  A foldable mobile phone 1 as a foldable mobile terminal according to this embodiment includes a first casing 3 having a liquid crystal display section 2 as a display section on the surface and a second casing having an operation section 4 on the surface. A body 5 and a hinge portion 6 that folds and connects the first housing 3 and the second housing 5 so as to be freely opened and closed are provided. As a result, the foldable mobile phone 1 can be switched between the folded state shown in FIG. 1 and the open state shown in FIGS. 2 and 3.

  The operation unit 4 of the second casing 5 is provided with a plurality of operation keys 7. The operation keys 7 are arranged so that key input can be performed when the foldable mobile phone 1 is held vertically, and a display is provided on the surface thereof. By operating this operation key 7, many functions of the foldable mobile phone 1 are used. The second casing 5 is provided with a microphone 9 for conversation.

  The liquid crystal display unit 2 and the operation unit 4 are configured to appear when the first housing 3 is opened from the folded state with respect to the second housing 5. Therefore, in this foldable mobile phone 1, regardless of whether the liquid crystal display unit 2 is in the vertically long state or the horizontally long state, the user operates the operation unit 4 in the same vertical state while looking at the liquid crystal display 2 a of the liquid crystal display unit 2. The key 7 can be operated.

  The liquid crystal display unit 2 is provided with a rectangular liquid crystal display 2 a so that a lower end portion in a vertically long state is formed in a straight line and occupies most of the surface of the liquid crystal display unit 2. A speaker unit 8 for conversation is provided on the upper end side of the liquid crystal display unit 2 in the vertically long state. In addition, each corner | angular part of the liquid crystal display part 2 may be round-chamfered from a design or safety viewpoint etc. including the left and right lower corner parts 2b and 2c. A rear liquid crystal 11 for displaying time and the like is provided on the upper rear side of the liquid crystal display unit 2 so that the time and the like can be seen in the folded state.

  As shown in FIGS. 2 and 3, the central portion in the left-right direction in the vertically long state and the horizontally long state of the liquid crystal display unit 2 is positioned substantially in the center in the left-right direction of the first housing 3. When the liquid crystal display unit 2 is in the horizontally long state, the liquid crystal display unit 2 does not have to be completely located at the center of the left and right, and may be slightly offset.

  4 and 5 show a front view and a rear view in which the liquid crystal display unit 2 and the like are indicated by a two-dot chain line to make the cam mechanism 10 easy to see. The first housing 3 is provided with a cam mechanism 10 as a support mechanism that supports the substantially rectangular plate-like liquid crystal display unit 2 so as to be switchable between a vertically long state and a horizontally long state. The liquid crystal display unit 2 is supported by the cam mechanism 10 so as to be rotatable in both clockwise and counterclockwise directions when viewed from the surface. For ease of viewing, in FIGS. 5 and 7 to 12, in the first housing 3, only the guide plate 16 is represented by a solid line, and the other parts are represented by a two-dot chain line.

  The first casing 3 includes a first casing body 3a whose lower end side constitutes the left and right ends of the hinge section 6, and a back surface side of the first casing body 3a (only the outer shape is shown in FIG. 4). And a back cover 3b covering the back side. The hinge portion 6 is formed to extend to the left and right so as to bulge toward the surface side at the lower end portion of the first housing body 3a. A hinge member (not shown) is provided inside the bulged portion, and the hinge member assists when the first housing 3 and the second housing 5 are folded and opened. When the switching mechanism is operated while the liquid crystal display unit 2 is rotated clockwise, the cam mechanism 10 is rotated while the lower right corner portion 2b of the liquid crystal display unit 2 is rotated while the liquid crystal display unit 2 is rotated counterclockwise. When the switching operation is performed, the lower left corner portion 2c of the liquid crystal display unit 2 is configured to guide and support the switching between the vertically long state and the horizontally long state of the liquid crystal display unit 2 so as to move along the hinge portion 6, respectively. Has been.

  The guide plate 16 is made of a substantially rectangular plate-shaped sheet metal such as stainless steel. If the first casing body 3a is made of a molded product such as a highly rigid metal or reinforced fiber plastic, and the guide plate 16 is attached to the first casing body 3a, the thickness can be reduced. ing.

  The cam mechanism 10 includes a first guide groove 12 and a second guide groove 14. FIG. 6 shows the guide plate 16 as viewed from the front. The first guide groove 12 and the second guide groove 14 are formed in the guide plate 16. The first guide groove 12 is formed symmetrically, and a left side portion 12a having a middle convex shape and a right side portion 12b having a middle convex shape are continuous at an intermediate point 12c. When viewed from the front side, the first guide groove 12 is configured by a peripheral edge portion of an opening having a shape in which the intermediate point 12c protrudes to the lowermost side and a seagull spreads its blades. The left portion 12a and the right portion 12b of the first guide groove 12 are such that the length (L1) from the intermediate point 12c to the intermediate convex portion 12d is longer than the length (L2) from the intermediate point 12c to the outer end portion. It is longer (L1> L2). By configuring in this way, the width of the first guide groove 12 in the left-right direction can be shortened, so that the overall size of the foldable mobile phone 1 is prevented from increasing.

  The second guide groove 14 is constituted by a peripheral portion of an opening extending substantially vertically above the intermediate point 12c of the first guide groove 12 at a position away from the first guide groove 12 of the first housing 3. ing. The groove width of the second guide groove 14 is larger than the groove width of the first guide groove 12. In addition, although mentioned later, the shape of the 1st and 2nd guide grooves 12 and 14 is not limited to this embodiment.

  Thus, since the first and second guide grooves 12 and 14 are symmetrical, the arrangement of the grooves is easy, and when the liquid crystal display unit 2 is rotated, the first guide grooves 12 appear on the appearance. Is easily prevented. In order to prevent the left and right end portions of the first guide groove 12 from appearing in appearance, the upper end of the first housing body 3a shown in FIG. 4 may be extended to provide the extension portion 3c. The extended portion 3c is preferably prevented from coming into contact with the disk member 18 during the operation of the liquid crystal display portion 2.

  A first guide pin 13 is slidably engaged with the first guide groove 12, and a second guide pin 15 is slidably engaged with the second guide groove 14. That is, the first guide pin 13 and the second guide pin 15 respectively have annular portions 13a and 15a on the back side of the guide plate 16 (shown only in FIG. 5), and the guide plates 16 are formed by these annular portions 13a and 15a. It is designed not to get out of it. Since the width of the second guide groove 14 is larger than the width of the first guide groove 12, the annular portion 15a on the second guide pin 15 side is more outward than the annular portion 13a on the first guide pin 13 side. The diameter is larger.

  A metal connecting member 17 that connects the first guide pin 13 and the second guide pin 15 is provided on the back side of the liquid crystal display unit 2. The connecting member 17 is a long and thin plate having a tapered lower end side, and the first guide pins 13 are provided so as to extend vertically from the lower end side of the connecting member 17 to the guide plate 16 side. The second guide pin 15 is provided so as to extend vertically from the upper end side of the connecting member 17 to the guide plate 16 side. A disk member 18 is provided in the middle in the vertical direction on the surface side of the connecting member 17. The disk member 18 is fixed to the back side of the liquid crystal display unit 2 with screws 31. A disk member 18 corresponding to a support shaft provided perpendicularly to a conventional liquid crystal display unit is located approximately at the center of the first housing 3 when viewed from the front side when the foldable mobile phone 1 is in a vertically long state. Is arranged. For example, although not shown in detail, if a through hole is provided in the middle portion of the disk member 18, a signal line connecting the liquid crystal substrate in the liquid crystal display unit 2 and the main substrate in the second housing 5 is passed. Can do.

  The cam mechanism 10 is provided with a biasing mechanism 20 that biases the liquid crystal display unit 2 so as to be in a vertically long state or a horizontally long state in any rotation direction by biasing the connecting member 17. . The biasing mechanism 20 is provided in a pair of left and right, and includes a spring support pin 21, a compression spring 22, and a pin pressing rod 23.

  An annular portion 21 a having a through hole is formed at the lower end portion of each spring support pin 21, and the annular portion 21 a is provided above the left and right end portions of the first guide groove 12 on the upper side of the guide plate 16. The pin member 24 is inserted. Thus, the pair of spring support pins 21 are supported so as to be swingable to the left and right with respect to the guide plate 16 around the annular portion 21a. The compression spring 22 is inserted into the spring support pin 21 with its lower end in contact with the annular portion 21a.

  An intermediate portion of the pin pressing rod 23 is rotatably supported by the guide plate 16 by a pressing rod rotating pin 25 provided on the upper end side of the guide plate 16. On the other hand, the disk member 18 is formed with a sliding groove portion 18a on the outer periphery on which the one end 23a side (right and left inner side) of the pin pressing rod 23 slides. The sliding groove 18a slides in a state in which one end 23a side of the pin pressing rod 23 is fitted. On the other end 23b side (on the left and right outer sides), a spring pressing portion 26 that has a through hole (not shown) into which the upper end side of the spring support pin 21 is inserted and presses the upper end of the compression spring 22 with a flat bottom portion is formed. Has been. The pair of pin pressing rods 23 press the compression spring 22 from the upper side at the spring pressing portion 26, and are swung around the pressing rod rotating pin 25 by the reaction force to press the disk member 18 from the upper side. Is configured to do. The compression spring 22 is most contracted when the liquid crystal display unit 2 is rotated by about 50 °.

  That is, the distance from the contact point between the one end 23a side of the pin pressing rod 23 and the bottom surface of the sliding groove 18a to the pressing rod rotating pin 25 is X (varies depending on the position of the disk member 18), and the pressing rod rotating pin If the distance from 25 to the intersection of the spring pressing portion 26 and the axis of the compression spring 22 is Y (constant), the load F1 acting on the disk member 18 is F0 as the urging force of the compression spring 22. F1 = F0 × Y / X. In this way, the sum of the loads from the left and right pin pressing bars 23 reduced by the lever principle is applied to the disk member 18.

  By providing the guide plate 16 with the first and second guide grooves 12, 14 and the pressing rod rotating pin 25 that supports the pin pressing rod 23, the first and second guide pins 13, 15, and the attachment pins are provided in a narrow area. The biasing mechanism 20 is accurately arranged. The first guide groove 12, the second guide groove 14, the first guide pin 13, the second guide pin 15, and the urging mechanism 20 are configured to be unit-assembled, and the unit-assembled cam mechanism 10 and urging mechanism are configured. 20 is adapted to be attached to the first casing 3 by attaching the guide plate 16 to the first casing body 3a.

-Action-
Next, the operation of the folding mobile phone 1 according to the present embodiment will be described.

  First, as shown in FIG. 1, when the foldable mobile phone 1 is not used or in a standby state, the first casing 3 and the second casing 5 are closed and in a folded state.

  Then, as shown in FIG. 2, when the first housing 3 and the liquid crystal display unit 2 are opened with respect to the second housing 5, the liquid crystal display unit 2 and the operation unit 4 appear. The liquid crystal display unit 2 is in a vertically long state during normal telephone calls or mail transmission / reception, and is used while inputting keys on the operation unit 4.

  On the other hand, when viewing a horizontally long image such as when viewing digital terrestrial television broadcasting or creating or reading a mail in English, the user rotates the liquid crystal display unit 2 to switch from the vertically long state to the horizontally long state.

  First, a method of rotating the liquid crystal display unit 2 clockwise as viewed from the surface will be described. As shown in FIGS. 4 and 5, in the vertically long state, the first guide pin 13 is located at the left and right intermediate point of the first guide groove 12, and the second guide pin 15 is located in the middle of the second guide groove 14. is doing.

  When the user operates with the thumb of the right hand, the user presses the corner portion 2b on the lower right side of the vertically long liquid crystal display unit 2 clockwise. Then, as shown in FIG. 7, the cam mechanism 10 causes the first guide pin 13 to engage with the first guide groove 12 and move upward toward the convex portion 12 d of the left portion 12 a of the first guide groove 12. The second guide pin 15 is slid upward in a state where the second guide pin 15 is engaged with the second guide groove 14 at the same time as it is slid to the left while being raised. At this time, the pin pressing rod 23 is pushed up by the connecting member 17 and swung around the pressing rod rotating pin 25, and the spring pressing portion 26 moves downward to compress the compression spring 22. The liquid crystal display unit 2 is rotated against the reaction force of the compression spring 22.

  As shown in FIG. 8, when the first guide pin 13 exceeds the convex portion 12d from the state where the first guide pin 13 is on the convex portion 12d, the first guide pin 13 slides leftward while descending downward, and at the same time, the second guide The pin 15 slides downward while being engaged with the second guide groove 14. At this time, the pin pressing rod 23 is pushed back by the urging force of the compressed compression spring 22 and is swung around the pressing rod rotating pin 25 to press the disk member 18 from above. As a result, the liquid crystal display unit 2 rotates while being assisted, and thereafter automatically enters the landscape state shown in FIG.

  In addition, after use, contrary to the above, the upper right corner of the liquid crystal display unit 2 is rotated in the opposite direction so as to resist the urging force of the compression spring 22, and the first guide pin 13 protrudes. The liquid crystal display unit 2 is rotated against the urging force of the compression spring 22 until the portion 12d is reached, and when the projection portion 12d is exceeded, the liquid crystal display unit 2 is pushed back to assist the liquid crystal display unit 2 while being in a vertically long state. Return.

  Next, a method for rotating the liquid crystal display unit 2 counterclockwise will be described. When the user operates with the thumb of the right hand, the user presses the lower left corner portion 2c of the vertically long liquid crystal display unit 2 shown in FIG. 4 counterclockwise when viewed from the surface. Then, the liquid crystal display unit 2 is lifted upward by the cam mechanism 10 toward the convex portion 12d of the right portion 12b of the first guide groove 12 with the first guide pin 13 engaged with the first guide groove 12. Simultaneously with the sliding movement to the right, the second guide pin 15 slides upward with the second guide groove 14 engaged. At this time, the connecting member 17 pushes the pin pressing rod 23 up and swings around the pressing rod rotating pin 25, and the spring pressing portion 26 moves downward to compress the compression spring 22. The liquid crystal display unit 2 is rotated against the reaction force of the compression spring 22.

  As shown in FIG. 11, when the first guide pin 13 is located on the convex portion 12d and exceeds the convex portion 12d, the first guide pin 13 slides rightward while descending downward, and the second The guide pin 15 slides downward while being engaged with the second guide groove 14. At this time, the pin pressing rod 23 is pushed back by the urging force of the compressed compression spring 22 and is swung around the pressing rod rotating pin 25 to press the disk member 18 from above. As a result, the liquid crystal display unit 2 rotates while being assisted, and thereafter automatically enters the landscape state shown in FIG.

  Also, after use, contrary to the above, the upper left corner portion of the liquid crystal display unit 2 is rotated in the opposite direction to resist the urging force of the compression spring 22, and the first guide pin 13 is The liquid crystal display unit 2 is rotated against the urging force of the compression spring 22 until the projection 12d is reached, and when the projection 12d is exceeded, the liquid crystal display unit 2 is pushed back to assist the liquid crystal display unit 2 while being in a vertically long state. Return to.

  Then, the first housing 3 and the second housing 5 are folded to be in a standby state.

  As described above, when the liquid crystal display unit 2 is switched, both the clockwise and counterclockwise rotations, the lowermost end when switching the lower right corner and the lower left corners 2b and 2c is the hinge. It is guided and supported so as to move with a gap between it and the part 6. For this reason, since the liquid crystal display part 2 does not contact the hinge part 6, the liquid crystal display part 2 can be obtained without rounding the lower end of the liquid crystal display part 2 along the radius around the support axis as in the prior art. Does not contact the hinge portion 6. Since the liquid crystal display unit 2 is supported so as to be able to rotate in both the clockwise and counterclockwise directions when viewed from the surface with respect to the first housing 3, the foldable mobile phone 1 is provided with the user's preference. The liquid crystal display unit 2 is rotated in the rotation direction to switch between the vertically long state and the horizontally long state.

  Due to the sliding groove 18 a, the pin pressing rod 23 is not easily detached from the disc member 18, and the urging force from the pin pressing rod 23 is reliably transmitted to the disc member 18 fixed to the liquid crystal display unit 2. Since the pair of pin pressing rods 23 press the disk member 18 from above the disk member 18, the movement of the first and second guide pins 13 and 15 is inhibited during the rotation operation of the liquid crystal display unit 2. Never do. Further, since the first guide grooves 12 are formed symmetrically, the liquid crystal display unit 2 rotates with the same movement in both clockwise and counterclockwise directions when viewed from the surface.

  Based on the principle of the lever, the urging force of the compression spring 22 is reduced and transmitted to the connecting member 17 via the pin pressing rod 23, so that the liquid crystal display unit 2 can be rotated in a narrow space while reducing the stroke of the compression spring 22. Can be supported. In addition, since the rotation of the liquid crystal display unit 2 is assisted by the urging mechanism 20, the user can rotate the liquid crystal display unit 2 in either the vertically long state or the horizontally long state with one hand.

  Assuming that only one pin pressing rod 23 is provided, the connecting member 17 moves up and down to move from the contact point between the one end 23a side of the pin pressing rod 23 and the bottom surface of the sliding groove 18a to the pressing rod rotating pin 25. As the distance X changes, the urging force F1 from the pin pressing rod 23 changes, and the urging force becomes uneven. However, in the present embodiment, since the pair of pin pressing rods 23 is provided, the biasing force F1 from the pair of pin pressing rods 23 becomes smaller when one is larger, so the total unevenness of the biasing force is small. Thus, the liquid crystal display unit 2 is stably rotated.

  Even in the horizontally long state shown in FIG. 3, the central portion in the left-right direction of the liquid crystal display unit 2 is located substantially at the center in the left-right direction of the first housing 3. Then, a setting is made so that a horizontally long image is displayed large on the liquid crystal display 2a, and a user enters a quiz program from the TV while inputting keys on the operation unit 4, or uses TV shopping or bank transfer through the TV. . That is, even in the horizontally long state, the operation unit 4 can be easily operated with the same operation key 7 arrangement as in the vertically long state that is familiar to the user while viewing the liquid crystal display 2a of the liquid crystal display unit 2.

  In addition, the first housing 3 can be placed with the second housing 5 facing down in either the horizontally long state or the vertically long state with the first housing 3 being opened with respect to the second housing 5. For this reason, it is possible to view a television or the like in a horizontally long state without using a means for supporting the foldable portable terminal in particular.

- embodiment of the effect -
Therefore, according to the foldable mobile phone 1 according to the present embodiment, the cam mechanism 10 adjusts the locus of the liquid crystal display unit 2 and supports it so that it can rotate in both the clockwise and counterclockwise directions when viewed from the surface. As a result, both left-handed and right-handed people can rotate from a vertically long state to a horizontally long state in a desired direction. In addition, the direction of rotation when held in the right hand and when held in the left hand can be freely selected. Furthermore, by appropriately arranging the first and second guide grooves 12, 14, the overall size can be easily suppressed. Therefore, while keeping the screen of the liquid crystal display unit 2 large, the overall size is suppressed, and the liquid crystal display unit 2 can be rotated from the vertically long state to the horizontally long state in both the clockwise and counterclockwise directions when viewed from the surface. Can be.

  The first guide grooves 12 are formed symmetrically to facilitate the arrangement of the grooves, and are rotated in the same manner regardless of the direction of rotation. For this reason, while being able to suppress the whole magnitude | size easily, operativity can be improved.

  In the left portion 12a and the right portion 12b of the first guide groove 12, the length (L1) from the intermediate point 12c to the intermediate convex portion 12d is larger than the length (L2) from the intermediate point 12c to the outer end portion, respectively. The width in the left-right direction of the first guide groove 12 is shortened by increasing the length. For this reason, it can suppress that the whole magnitude | size becomes large easily, can prevent that the 1st guide groove 12 appears in an external appearance, and can improve an external appearance.

  The cam mechanism 10 keeps a gap between the left and right lower corners along the hinge 6 so as to move along the hinge 6 in both the clockwise and counterclockwise rotation directions as viewed from the surface. However, the liquid crystal display unit 2 is switched to the horizontally long state or the vertically long state. For this reason, even if the shape of the liquid crystal display unit 2 is made substantially rectangular, the liquid crystal display unit 2 does not come into contact with the hinge portion 6 or the bulging portion at the lower end of the first housing 3, so that the display screen can be enlarged. it can.

  The cam mechanism 10 switches the liquid crystal display unit 2 while preventing contact in both the clockwise and counterclockwise rotation directions when viewed from the surface, so that the liquid crystal display unit 2 in the vertically long state and the horizontally long state is switched. The center part in the left-right direction is positioned substantially at the center in the left-right direction of the first housing 3. For this reason, the liquid crystal display unit 2 can be positioned at the center in the left-right direction as a whole, not only in the portrait orientation but also in the landscape orientation while making the screen as large as possible. A foldable mobile phone 1 is obtained.

  The cam mechanism 10 is provided with an urging mechanism 20 for urging the liquid crystal display unit 2 to be in a vertically long state or a horizontally long state in any rotation direction by urging the connecting member 17 to assist the switching operation. ing. For this reason, in both the clockwise and counterclockwise rotation directions when viewed from the surface, the user can switch to the vertically long state or the horizontally long state with one touch with only one hand. It can be done easily.

  A spring support pin 21 provided to swing the urging mechanism 20 on the first housing 3, a compression spring 22 inserted into the spring support pin 21, and an intermediate portion rotatable to the first housing 3. And a pin pressing rod 23 whose one end 23 a abuts against the connecting member 17 and whose other end 23 b abuts against the compression spring 22, and the biasing force of the compression spring 22 is applied to the pin pressing rod according to the lever principle. 23 is transmitted to the connecting member 17 via 23. For this reason, since the stroke of the compression spring 22 becomes small, the durability of the compression spring 22 can be improved, and the rotation operation of the liquid crystal display unit 2 can be assisted while suppressing the overall size.

  The connecting member 17 is provided with a disk member 18 having a sliding groove 18a on which one end 23a side of the pin pressing bar 23 slides, and the disk member 18 is fixed to the back side of the liquid crystal display unit 2 to The urging force is reliably transmitted to the disk member 18. For this reason, the switching operation of the liquid crystal display unit 2 can be performed smoothly.

  A pair of urging mechanisms 20 are provided, and when the urging force from one pin pressing rod 23 is large, the other urging force is reduced so that the total unevenness of the urging force is reduced. For this reason, since the liquid crystal display unit 2 can be rotated stably, the switching operation of the liquid crystal display unit 2 can be performed smoothly.

  A pair of spring support pins 21 are provided symmetrically on the upper side of the first housing 3, and the disk member 18 is pressed from the upper side by a pair of pin pressing rods 23, and the first and the first during the rotation operation of the liquid crystal display unit 2. 2 The movement of the guide pins 13 and 15 is not disturbed. For this reason, the switching operation of the liquid crystal display unit 2 can be performed smoothly.

  The guide plate 16 of the first housing 3 is provided with the first and second guide grooves 12, 14 and the support position of the pin pressing rod 23, and the first and second guide pins 13, 15 and the urging force are provided in a narrow area. A mechanism 20 is arranged. For this reason, the whole size can be suppressed and portability can be improved.

  The portable phone 1 can be placed with the second casing 5 facing down in either the horizontally long state or the vertically long state with the foldable mobile phone 1 open, so that it can be carried in an appropriate place without using separate parts. It is possible to comfortably view a TV or the like by placing a terminal.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

That is, the shape of the 1st guide groove 12 and the 2nd guide groove 14 is not restricted to the said embodiment. The second guide groove 14 is not only extended perpendicular to the axial direction of the hinge 6 as in the above embodiment, may be Shin Basumono in a direction inclined with respect to the axial direction.

  Moreover, in the said embodiment, although the 2nd guide groove 14 was provided above the intermediate point 12c of the 1st guide groove 12, as shown to Fig.13 (a) and (b), the 1st guide groove 12 of the 1st guide groove 12 is provided. You may provide in the upper direction offset in either the right or left direction from the intermediate point 12c. In that case, the shape of the first guide groove 12 may be a shape in which the offset side protrudes upward from the opposite side. Furthermore, as shown in FIG. 13C, the second guide groove 14 may be provided below the intermediate point 12 c of the first guide groove 12. In that case, the urging mechanism 20 may be disposed on the lower side.

  In the above embodiment, when the switching operation is performed while the liquid crystal display unit 2 is rotated clockwise by the cam mechanism 10, the switching operation is performed while the lower right corner portion 2b is rotated and the liquid crystal display unit 2 is rotated counterclockwise. When this is done, the lower left corner portion 2c is guided and supported so as to move along the hinge portion 6, respectively. The trajectory can be adjusted by appropriately setting the shapes of the first and second guide grooves 12 and 14, and may be linear or curved. By adjusting in this way, for example, it is possible to provide a camera or the like at the bulging portion between the lower end portion of the first housing 3 and the hinge portion 6. It is possible to prevent the right lower end side corner portion 2b and the left lower end side corner portion 2c of the portion 2 from contacting each other.

  In the above embodiment, the center portion in the left-right direction in the vertically long state and the horizontally long state of the liquid crystal display unit 2 is positioned at the substantially center in the left-right direction of the first housing 3, but may be slightly offset to either the left or right. .

  In the said embodiment, although the liquid crystal display part 2 as a display part had the liquid crystal display 2a, you may have an organic EL display. An organic EL display emits light by itself, consumes less power, has a wider viewing angle than a liquid crystal display, and does not require a backlight, and thus can be thinned. On the other hand, the liquid crystal display 2a is cheaper and has a longer life than the organic EL display. Similarly, the rear liquid crystal 11 may be an organic EL display.

  In the above embodiment, the foldable mobile terminal is a mobile phone, but it may be a PC, a mobile tool, an electronic dictionary, a calculator, a copier, or the like. Further, it may be a mobile communication device such as PHS or PDA. In either case, switching between the horizontally long or vertically long state is easy, the operability is high, and a compact and high commercial value can be obtained.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

  As described above, the present invention is useful for a foldable portable terminal having a support mechanism that supports a display unit such as a mobile phone so that the display unit can be switched to a vertically long state or a horizontally long state.

It is a perspective view which shows the folding type mobile telephone concerning embodiment of this invention in a folding state. It is a perspective view which shows the foldable mobile phone in a state where the liquid crystal display unit is in the vertically long state in the opened state. It is a perspective view which shows a foldable mobile telephone when a liquid crystal display part is in a horizontally long state in the open state. It is a front view which shows the cam mechanism and its periphery in a liquid crystal display part vertically long state. It is a rear view which shows the cam mechanism and its periphery in a liquid crystal display part vertically long state. It is a front view of a guide plate. FIG. 5 is a view corresponding to FIG. 4 illustrating a state in the middle of rotating the liquid crystal display unit clockwise from the vertically long state. FIG. 5 is a view corresponding to FIG. 4 illustrating a state in the middle of rotating the liquid crystal display unit clockwise from the vertically long state. FIG. 5 is a view corresponding to FIG. 4 illustrating a horizontally long state in which the liquid crystal display unit is rotated clockwise from the vertically long state. FIG. 5 is a view corresponding to FIG. 4 illustrating a state in the middle of rotating the liquid crystal display unit counterclockwise from the vertically long state. FIG. 5 is a view corresponding to FIG. 4 illustrating a state in the middle of rotating the liquid crystal display unit counterclockwise from the vertically long state. FIG. 5 is a view corresponding to FIG. 4 illustrating a horizontally long state in which the liquid crystal display unit is rotated counterclockwise from the vertically long state. It is a front view showing the shape of the 1st and 2nd guide groove concerning other embodiment.

1 Foldable mobile phone (foldable mobile terminal)
2 Liquid crystal display (display)
2a Liquid crystal display 2b, 2c Lower end side corner portion 3 First housing 4 Operation portion 5 Second housing 6 Hinge portion 10 Cam mechanism (support mechanism)
12 First guide groove 12a Left side portion 12b Right side portion 12c Intermediate point 12d Convex portion 13 First guide pin 14 Second guide groove 15 Second guide pin 16 Guide plate 17 Connecting member 18 Disc member 18a Sliding groove portion 20 Energizing mechanism 21 Spring support pin 22 Compression spring 23 Pin pressing rod 23a One end 23b The other end

Claims (13)

A first housing having a display portion on a surface;
A second housing having an operation portion on the surface;
A hinge portion that folds and connects the first housing and the second housing so as to be freely opened and closed;
The display unit is a foldable portable terminal that is supported by the first housing via a support mechanism so as to be switchable between a vertically long state and a horizontally long state,
The support mechanism is
A first guide groove provided in the first housing and including a continuous left side portion having a middle convex shape and a right side portion having a middle convex shape;
A second guide groove provided at a position above or below the first guide groove of the first housing and extending in the vertical direction ;
A first guide pin slidably engaged with the first guide groove;
A second guide pin slidably engaged with the second guide groove;
A connecting member that is provided on the back side of the display unit and connects the first guide pin and the second guide pin;
Comprising a cam mechanism with
The foldable portable terminal, wherein the display unit is supported by the cam mechanism so as to be rotatable in both clockwise and counterclockwise directions when viewed from the surface. In the foldable portable terminal according to claim 1,
The first guide groove is formed symmetrically,
The foldable portable terminal, wherein the second guide groove extends substantially vertically above an intermediate point connecting the left and right portions of the first guide groove. In the foldable portable terminal according to claim 1 or 2,
The left side portion and the right side portion of the first guide groove are each a folding type characterized in that the length from the intermediate point to the intermediate convex portion is longer than the length from the intermediate point to the outer end portion. Mobile device. In the foldable portable terminal according to any one of claims 1 to 3,
When the switching mechanism is operated while the display unit rotates clockwise when viewed from the surface, the switching operation is performed while the lower right corner portion of the display unit rotates and the display unit rotates counterclockwise. The left lower corner portion of the display unit is configured to guide and support switching of the display unit between the vertically long state and the horizontally long state so that the corner portion moves along the hinge portion. A foldable mobile terminal. In the foldable portable terminal according to any one of claims 1 to 4,
A foldable portable terminal, wherein a center portion in the left-right direction in the vertically long state and the horizontally long state of the display unit is positioned substantially in the center in the left-right direction of the first housing. In the foldable portable terminal according to any one of claims 1 to 5,
The cam mechanism is provided with a biasing mechanism that biases the display member so as to be in a vertically long state or a horizontally long state in any rotation direction by biasing the connecting member. A foldable mobile terminal. In the foldable portable terminal according to claim 6,
The biasing mechanism is
A spring support pin swingably provided on the first housing;
A compression spring inserted into the spring support pin;
A pin pressing rod having an intermediate portion rotatably supported by the first housing, one end abutting on the connecting member, and the other end abutting on the compression spring;
A foldable portable terminal characterized by comprising: The foldable portable terminal according to claim 7,
The connecting member is provided with a disk member having a sliding groove formed on the outer periphery on which one end side of the pin pressing rod slides,
The foldable portable terminal, wherein the disk member is fixed to the back side of the display unit. The foldable portable terminal according to claim 8,
A pair of the urging mechanisms is provided. The foldable portable terminal. The foldable portable terminal according to claim 9,
A pair of the spring support pins are provided symmetrically on the upper side of the first housing,
The pair of pin pressing rods press the disk member from above, and the folding portable terminal. In the foldable portable terminal according to claim 10,
The first housing is
A first housing body constituting a part of the hinge portion;
A guide plate fixed to the first housing body and having the first guide groove and the second guide groove formed thereon,
The pair of pin pressing rods are respectively supported above the left and right end portions of the first guide groove of the guide plate. The foldable portable terminal according to any one of claims 1 to 11,
The first housing is open with respect to the second housing, and can be placed with the second housing down in both the horizontally long state and the vertically long state. A foldable portable terminal characterized by that. The foldable portable terminal according to any one of claims 1 to 12, wherein the foldable portable terminal is a cellular phone.

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