JP6355233B2 - Biaxial hinge and terminal device using the biaxial hinge - Google Patents

Description

  The present invention relates to a biaxial hinge suitable for use in opening and closing a first housing and a second housing of a terminal device such as a notebook personal computer, a mobile personal computer, or a PDA.

  In terminal devices such as notebook computers, mobile personal computers, and PDAs that have a first housing with a keyboard and a second housing with a display, the first and second housings can be opened and closed vertically. A single-shaft hinge composed of a single shaft connected to the first housing, the first housing and the second housing are opened 90 ° to 180 ° in the vertical direction, and then the second housing is further moved horizontally relative to the first housing. There are two-axis hinges that consist of two axes to enable rotation. The present invention relates to this biaxial hinge.

  Conventionally, what was described in the following patent document 1 is well-known as a biaxial hinge of such a structure. The biaxial hinge described in Patent Document 1 connects a shaft attached to a first member (first housing) and a shaft attached to a second member (second housing) with a connecting arm. Each shaft is provided with a friction torque generating means and further provided with a link arm, but is not configured to be able to open the first member and the second member by 180 ° or more. This member and the second member are not configured to be opened and closed with regularity.

JP 2009-063039 A

  In recent years, needs required for terminal devices such as notebook personal computers have diversified, and the functions of terminal devices have also diversified accordingly. Under such circumstances, in order to have a function as a tablet at the same time as being able to be used as a notebook computer, for example, the first housing and the second housing constituting the terminal device are closed at 0 ° via a hinge. The opening / closing operation of the other casing can be restricted during the opening / closing operation of one casing from the fully open state to 360 °, and the opening / closing operation order is set to either the first casing or the second casing. There is a need for a hinge that can be opened and closed with a predetermined regularity so that it can be regulated.

  Therefore, the applicant of the present application is configured in the previous patent application (Japanese Patent Application No. 2012-123093) so that the first housing and the second housing can be opened 180 ° in total in a vertical direction of 360 °. A shaft hinge was proposed. The present invention has no difference in its usefulness, but it has been demanded that the opening / closing angle can be adjusted in small increments thereafter.

  Therefore, the present applicant has proposed a biaxial hinge that can meet such further requests (Japanese Patent Application No. 2013-247542). In this biaxial hinge configuration, the first hinge shaft attached to the first housing side and the second hinge shaft attached to the second housing side are connected in parallel by at least the first connecting member and the second connecting member. And a first selective rotation restricting means for selectively rotating the first hinge shaft and the second hinge shaft between the first hinge shaft and the second hinge shaft, and a second selection. And a first rotational restriction means and a second selective rotation restriction means that can open and close the first housing and the second housing in a predetermined order. The opening / closing direction can be switched between a plurality of stages from 0 ° in the closed state to 360 ° in the fully opened state.

  In this invention, the first selective rotation restricting means is provided so as to be slidable in the vertical direction between the second connecting member and the slide guide member through which the first hinge shaft and the second hinge shaft are rotatably inserted. However, a lock member having a first cam protrusion and a second cam protrusion on the lower part and the upper part, and the first hinge shaft and the second hinge shaft are inserted and engaged with each other with the lock member interposed therebetween. A first concave lock cam member and a first negative lock cam member having a second concave cam portion and a second concave B cam concave portion; 2A lock cam member and 2B lock cam member attached to the hinge shaft with their rotations restrained, respectively, and these 2A lock cams A movable stopper that is rotatably provided between the member and the second B lock cam member, and engages with the second A lock cam member and the second B lock cam member according to the rotation angle, and is rotatable on the first hinge shaft and the second hinge shaft. And a first stopper lever and a second stopper lever which are engaged with the moving stopper and are brought into pressure contact with the second A lock cam member and the second B lock cam member by the first A elastic means and the first B elastic means. It is a thing.

  However, the biaxial hinge according to the invention of the prior application has a new problem that the manufacturing cost is increased because of the large number of components and considerably complicated structure. Manufacturers of terminal equipment such as notebook personal computers are very demanding for cost reductions in their components.

  Therefore, an object of the present invention is to provide a first housing having a keyboard portion and a second housing having a display portion in a predetermined order from a closed state of 0 ° to a fully opened state of 360 °. In a biaxial hinge that can be opened and closed by switching the opening and closing direction in multiple stages, the first housing and the second housing can be held in a stable stop state at any opening and closing angle, and the suction function can also be maintained On the other hand, there is an attempt to provide a two-axis hinge that omits components as much as possible, simplifies the structure, and is inexpensive to manufacture.

  In order to achieve the above object, the biaxial hinge according to claim 1 is a biaxial hinge that opens and closes the first casing and the second casing of the terminal device relative to each other, and is on the first casing side. A first hinge shaft attached to the second housing and a second hinge shaft attached to the second housing side are connected in parallel by a plurality of connecting members so as to be rotatable with respect to each other, and the first hinge shaft and the second hinge And a selective rotation restricting means for selectively rotating the shaft, wherein the selective rotation restricting means is a connecting member in which the first hinge shaft and the second hinge shaft are rotatably inserted to face each other. A first lock / release member provided between the first hinge shaft and the second hinge shaft with the first lock / release member interposed between the first hinge shaft and the second hinge shaft. First selective rotation restricting means comprising a first A lock cam member and a first B lock cam member provided with restricted rotation, and the first hinge provided adjacent to the first selective rotation restricting means A second lock / release member provided so as to be vertically movable between a shaft and a connecting member that is rotatably inserted through the second hinge shaft, and an upper side sandwiching the second lock / release member; A second selective rotation restricting means comprising a second A lock cam member and a second B lock cam member provided on the lower side of the first hinge shaft and the second hinge shaft so as to be restricted in rotation, respectively, The first selective rotation restricting means and the second selective rotation restricting means open and close the first casing and the second casing by switching their opening / closing directions in a predetermined order in a plurality of stages. Characterized in that form so that it can be opened and closed for each of a plurality of opening angle of the closed state from 0 ° over 360 ° of the total open state.

  A biaxial hinge according to a second aspect of the invention includes stopper means comprising first stopper means and second stopper means in addition to the biaxial hinge according to the first aspect of the invention, wherein the first stopper means comprises A first stopper piece provided on a lower side of a stopper plate serving also as a connecting member of either the first selective rotation restricting means and the second selective rotation restricting means, and the first A lock cam member or the second A lock cam member. A first protrusion provided at a position facing the first stopper piece on the outer periphery, and the second stopper means includes a second stopper piece provided on an upper side of the stopper plate also serving as the connecting member; And a second protrusion provided at a position facing the second stopper piece on the outer periphery of the first B lock cam member or the second B lock cam member.

According to a third aspect of the present invention, in addition to the first and second aspects of the invention, the biaxial hinge includes a friction torque generating means comprising a first friction torque generating means and a second friction torque generating means, and the first friction torque generating means. The means controls the rotation of the first hinge shaft between the first friction plate also serving as the connecting member and a second friction plate constituting another connecting member provided to face the first friction plate. A first friction washer, and a first elastic means for pressing the first friction plate and the second friction plate on both sides of the first friction washer, and the second friction torque generating means , Between the first friction plate and the second friction plate A second friction washer that is attached to the second hinge shaft so as to restrict rotation; and a second elastic means that presses the first friction plate and the second friction plate on both sides of the second friction washer. It is characterized by that.

A biaxial hinge according to a fourth aspect of the invention includes suction means comprising first suction means and second suction means in addition to the biaxial hinges according to claims 1 to 3, respectively. The first hinge shaft is rotatably inserted by the first hinge shaft and the first A curved cam concave portion and the first B curved cam concave portion provided around the bearing hole of the cam plate. A first cam follower that is attached and has a first A curved cam convex portion and a first B curved cam convex portion on a side facing the first A curved cam concave portion and the first B curved cam concave portion, the first A curved cam concave portion, and the first The first elastic member presses the first B curved cam concave portion, the first A curved cam convex portion, and the first B curved cam convex portion, and the second suction means can rotate the second hinge shaft. A first 2A curved cam recesses and the 2B curved cam recess formed around the bearing hole of the cam plate was provided so inserted, attached is restricted to rotate in the second hinge shaft, the first 2A curved cam A second cam follower having a second A curved cam convex portion and a second B curved cam convex portion on a side facing the concave portion and the second B curved cam concave portion; the second A curved cam concave portion; the second B curved cam concave portion; 2. The biaxial hinge according to claim 1, comprising: a second elastic means that press-contacts the 2A curved cam convex portion and the second B curved cam convex portion.

  According to a fifth aspect of the present invention, in addition to the biaxial hinge according to the first to fourth aspects of the present invention, the biaxial hinge includes a hinge case that covers the body portion from the second stopper plate that also serves as a connecting member of the friction torque generating means. The hinge case is characterized in that an attachment portion provided in the hinge case is detachably attached to the main body portion via an attachment screw.

  A terminal device according to a sixth aspect of the invention is characterized in that the biaxial hinge described in the first to sixth aspects is used.

  Since the present invention is configured as described above, according to the first aspect of the present invention, the first selective rotation restricting means and the second selective rotation are provided with a simple configuration in which the components are omitted from the conventional one. By restricting and rotating the first hinge shaft and the second hinge shaft in a predetermined order by the regulating means, the first housing and the second housing are rotated from 0 ° in the closed state to the fully opened state. It can be opened and closed by switching its opening and closing directions in a predetermined order over a range of 360 °.

  Next, according to the second aspect of the present invention, the first hinge shaft is formed by the first selective rotation restricting means and the second selective rotation restricting means, with a simple structure in which the components are omitted from the conventional one. And the second hinge shaft are rotated in a predetermined order to selectively open and close the first housing and the second housing in a predetermined order over a range from 0 ° in the closed state to 360 ° in the fully opened state. In addition, by restricting the rotation angle of the first hinge shaft and the second hinge shaft by the stopper means, the rotation direction of the first hinge shaft and the second hinge shaft is restricted to a predetermined rotation angle, The first housing and the second housing can be opened and closed by switching in a predetermined order.

  According to a third aspect of the present invention, the first hinge shaft and the first selective rotation restricting means are formed by the first selective rotation restricting means and the simple selective structure with the components omitted from the conventional one. By rotating the second hinge shaft in a predetermined order, the first housing and the second housing are regularly opened and closed in a predetermined order over a range of 0 ° in the closed state to 360 ° in the fully opened state. In addition, rotational torque is created by the friction torque generating means, and the operational feeling at the time of opening and closing is made smooth, and the first and second housings are stopped and held at an arbitrary opening and closing angle. It is something that can be done.

  According to a fourth aspect of the present invention, the first hinge shaft and the first selective rotation restricting means are formed by the first selective rotation restricting means and the second selective rotation restricting means, with the simple structure omitted from the conventional components. By rotating the second hinge shaft in a predetermined order, the first housing and the second housing are regularly opened and closed in a predetermined order over a range of 0 ° in the closed state to 360 ° in the fully opened state. Then, the suction means can provide the operator with a click operation sensation to automatically urge the first housing and the second housing in the opening and closing directions at a predetermined opening and closing angle by the suction means. . In addition, if no latch means is provided between the first housing and the second housing to hold both in the closed state, the first housing and the second housing will naturally open in the closed state. It can operate a function to prevent it.

  Further, according to the fifth aspect of the present invention, since the main body portion of the biaxial hinge is not visible from the outside by the hinge case, it is possible to achieve an effect that the external appearance of the biaxial hinge becomes clean.

  According to the sixth aspect of the present invention, the terminal device can switch the rotation direction of the first housing and the second housing in a predetermined order, and can be opened and closed over a maximum of 360 ° in a predetermined angle with regularity. Can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS The notebook computer which is an example of the terminal device which attached the biaxial hinge which concerns on this invention, for example is shown, (a) is the perspective view which looked at the state which opened the 2nd housing | casing with respect to the 1st housing | casing from the front. (B) is the perspective view which looked at the state which closed the 1st case and the 2nd case from the back. It is the perspective view which removed the hinge case from the main-body part of the biaxial hinge which concerns on this invention, and was seen. It is a disassembled perspective view of the biaxial hinge which concerns on this invention. It is a top view of the 1st hinge shaft of the biaxial hinge which concerns on this invention. It is a top view of the 2nd hinge shaft of the biaxial hinge which concerns on this invention. It is a perspective view of the part of the 4th connection member which serves as the 2nd friction plate of the friction torque generation means concerning the present invention. It is a side view of the 3rd connection member which serves as the 3rd guide member of the 1st friction plate of the friction torque generating means of the 2 axis hinge concerning the present invention, and the 2nd selective rotation control means. The 1st lock / release member and the 2nd lock / release member of the selective rotation control means of the biaxial hinge which concern on this invention are shown, (a) is the perspective view, (b) The side view. The 1A lock cam member of the 1st selective rotation control means of the biaxial hinge which concerns on this invention is shown, (a) is the perspective view, (b) The side view. The 1B lock cam member of the 1st selective rotation control means of the biaxial hinge which concerns on this invention is shown, (a) is the perspective view, (b) The side view. The 2A lock cam member of the 2nd selective rotation control means of the biaxial hinge concerning this invention is shown, (a) is the perspective view, (b) The side view. The 2B lock cam member of the 2nd selective rotation control means of the biaxial hinge which concerns on this invention is shown, (a) is the perspective view, (b) The side view. It is a side view of the 1st and 2nd friction washer of the friction torque generation means of the biaxial hinge which concerns on this invention. The 2nd connection member which serves as the 2nd guide member of the stopper plate of the stopper means of the biaxial hinge concerning this invention and the selective rotation control means is shown, (a) is the perspective view, (b) It is the side view. The 1st connection member which serves as the 1st guide member of the selective rotation control means of the biaxial hinge which concerns on this invention, and the cam plate of a suction means is shown, (a) is the side view, (b) The perspective view. The 1st cam follower and 2nd cam follower of the suction means of the biaxial hinge which concern on this invention are shown, (a) is the side view, (b) is the perspective view. The hinge case of the biaxial hinge which concerns on this invention is shown, (a) is the side view, (b) is the sectional view on the AA line of (a). It is operation | movement explanatory drawing of the stopper means of the biaxial hinge which concerns on this invention, (a) shows the state of the closed state of a 1st housing | casing and a 2nd housing | casing, (b) shows the 1st housing | casing and 2nd housing | casing. Each of the cases is shown in a state where it is opened 180 °. FIG. 7 is a view for explaining a state before the operation of the biaxial hinge according to the present invention, that is, a state in which the second housing is closed with respect to the first housing at an angle of 0 °, and FIG. The state of a rotation control means is shown, (b) shows the state of a 2nd selective rotation control means. The state during operation of the biaxial hinge according to the present invention, that is, the state of 45 ° during the operation from the angle 0 ° to 90 ° in the closed state of the second housing with respect to the first housing. (A) shows the state of the first selective rotation restricting means, and (b) shows the state of the second selective rotation restricting means. FIG. 6 is a view for explaining a state during operation of the biaxial hinge according to the present invention, that is, a state where the opening angle of the second housing is 90 ° with respect to the first housing; FIG. The state is shown, and (b) shows the state of the second selective rotation restricting means. In order to explain the state during operation of the biaxial hinge according to the present invention, that is, the state of 135 ° during the operation from the opening angle of 90 ° to 180 ° with respect to the first housing of the second housing, (A) shows the state of the first selective rotation restricting means, and (b) shows the state of the second selective rotation restricting means. FIG. 22 is a view for explaining a state in which the biaxial hinge according to the present invention is operating, that is, a state in which the opening angle of the second housing is 180 ° with respect to the first housing. The product rotated 180 ° counterclockwise with respect to the housing and turned 180 ° was rotated 90 ° counterclockwise and displayed. Among them, (a) shows the state of the first selective rotation restricting means, and (b) shows the state of the second selective rotation restricting means. For explaining the state during operation of the biaxial hinge according to the present invention, that is, the state of 225 ° during the operation from the opening angle of 180 ° to 270 ° with respect to the first housing of the second housing, a) shows the state of the first selective rotation restricting means, and (b) shows the state of the second selective rotation restricting means. FIG. 7 is a view for explaining a state in which the biaxial hinge according to the present invention is operating, that is, a state in which the opening angle of the second casing is 270 ° with respect to the first casing; (B) shows the state of the second selective rotation restricting means. For explaining the state during operation of the biaxial hinge according to the present invention, that is, the state of 315 ° during the operation from the opening angle 270 ° to 360 ° with respect to the first housing of the second housing, (A) shows the state of the first selective rotation restricting means, and (b) shows the state of the second selective rotation restricting means. FIG. 26 is a diagram for explaining a state in which the two-axis hinge according to the present invention is operating, that is, a state in which the opening angle of the second casing is 360 ° with respect to the first casing; And the closed state with respect to the second housing was rotated 90 ° to the right and displayed. Among them, (a) shows the state of the first selective rotation restricting means, and (b) shows the state of the second selective rotation restricting means.

  In the following, an embodiment in which the biaxial hinge according to the present invention is used in a notebook computer which is an example of a terminal device will be described with reference to the drawings. However, in the range of 180 ° or more from the biaxial according to the present invention. The present invention can also be used for a mobile personal computer having a first housing and a second housing that can be opened and closed, a terminal device such as a PDA, and others.

  1A and 1B show a notebook computer 1 as an example of a terminal device using a biaxial hinge according to the present invention. The notebook computer 1 includes a pair of biaxial hinges 4 and 5 according to the present invention at the left and right positions of the first housing 2 provided with the keyboard portion 2a and the rear portion of the second housing 3 provided with the display portion 3a. It is connected so that it can be opened and closed.

  Since the configuration of the biaxial hinges 4 and 5 is the same, only one of the indicator symbols 4 will be described below, and the description of the other indicator symbol 5 will be omitted. Of course, when there is no trouble in operation, the configuration of the biaxial hinge indicated by the instruction symbol 5 may be different.

  2 to 17 show an embodiment of the biaxial hinge 4 according to the present invention. In particular, in FIGS. 2 to 5, reference numerals 10 and 12 indicate a first hinge shaft and a second hinge shaft. Of these, the construction of the first hinge shaft 10 will be described. In particular, as shown in FIGS. 3 and 4, a flat cross section is formed from one end side, and mounting holes 10b, 10b, and 10b are provided on the surface. The mounting plate portion 10a, a circular shaft portion 10c provided subsequent to the mounting plate portion 10a, and a substantially elliptical cross section having a slightly smaller diameter than the circular shaft portion 10c provided subsequent to the circular shaft portion 10c. A first deformation shaft portion 10d and a second deformation shaft portion 10e having a substantially elliptical cross section with a slightly smaller diameter than the first deformation shaft portion 10d provided subsequent to the first deformation shaft portion 10d. And a male screw portion 10f provided subsequent to the second deformation shaft portion 10e.

  As shown in FIG. 2, the first mounting plate 11 is attached to the mounting plate portion 10a. The method of mounting the first mounting plate 11 to the mounting plate portion 10a is shown in FIG. As described above, the end portions of the mounting pins 10g, 10g, and 10g with flange portions that pass through the mounting holes 10b, 10b, and 10b of the first hinge shaft 10 and the mounting holes 11a, 11a, and 11a of the first mounting plate 11 It is made by tightening. And the 1st attachment plate 11 is attached to the upper surface side of the 1st housing | casing 2 using the attachment screw which is not shown in figure through the attachment holes 11b, 11b .... provided in the said 1st attachment plate 11. It is. The mounting pins 10g, 10g, and 10g may be used as mounting screws.

  Next, what is indicated by an instruction symbol 12 is a second hinge shaft arranged in parallel in the vertical direction with respect to the first hinge shaft 10, and this second hinge shaft 12 is particularly shown in FIGS. 3 and 5. As shown, a mounting plate portion 12a having a flat cross-sectional shape from one end thereof and having mounting holes 12b, 12b, 12b on its surface, and a circular shaft portion 12c provided following the mounting plate portion 12a. A first deformed shaft portion 12d having a substantially elliptical cross section slightly smaller in diameter than the circular shaft portion 12c provided following the circular shaft portion 12c, and provided following the first deformed shaft portion 12d. However, the second deformation shaft portion 12e having a substantially elliptical cross section having a slightly smaller diameter than the first deformation shaft portion 12d, and a male screw portion 12f provided following the second deformation shaft portion 12e. It is configured.

  As shown in FIGS. 2 and 3, the mounting plate portion 12 a is attached with a second mounting plate 13. The mounting method of the second mounting plate 13 to the mounting plate portion 12 a is the second hinge. It is made by caulking the end portions of the mounting pins 12g, 12g, 12g with flanges through the mounting holes 12b, 12b, 12b of the shaft 12 and the mounting holes 13a, 13a, 13a of the second mounting plate 13. . And the 2nd attachment plate 13 is attached to the lower surface side of the 1st housing | casing 2 using the attachment screw which is not shown in figure through the attachment holes 13b, 13b .... provided in the said 2nd attachment plate 13. Yes. The mounting pins 12g, 12g, and 12g may be used as mounting screws.

  In this embodiment, as shown in FIGS. 2 and 3, a mounting cylinder for a keyboard which is attached to the first hinge shaft 10 and has a plurality of protrusions 8a, 8a,. 8 is provided. A fourth connecting member 26 constituting a second friction plate of a friction torque generating means 25 described later is attached to one end of the mounting cylinder 8. The fourth connection member 26 has a substantially bowl shape on the side surface, and has a fourth A bearing hole 26a and a fourth B bearing hole 26b through which the first hinge shaft 10 and the second hinge shaft 12 are rotatably inserted in the upper and lower portions thereof. Is provided. The mounting cylinder 8 is for winding a belt-like plate for lifting the keyboard, and a drawing showing the winding state and a detailed description thereof are omitted.

  Next, the selective rotation restricting means 14 will be described first. The selective rotation restricting means 14 includes a first selective rotation restricting means 14a and a second selective rotation restricting means 14b. As shown in FIG. 15 in particular, the first selective rotation restricting means 14a is a first A bearing hole through which the first deformation shaft portions 10d and 12d of the first hinge shaft 10 and the second hinge shaft 12 are rotatably inserted. A first guide member 15 that also serves as a first connecting member that has a substantially saddle-shaped side surface by providing a guide portion 15c with a central portion and a guide portion 15c. As shown in FIG. 14, the first deformed shaft portions 10d and 12d of the first hinge shaft 10 and the second hinge shaft 12 provided to face the first guide member 15 are rotatably inserted. A second guide member that also serves as a second connecting member that has a substantially bowl-shaped side surface by providing a guide portion 16c with a central portion that is curved by providing a second A bearing hole 16a and a second B bearing hole 16b. 16 and As shown in FIG. 8, the first A convex portion 17a and the first B convex portion 17b are provided at the vertical position, and the guide portion 15c of the first guide member 15 and the guide portion 16c of the second guide member 16 are provided at the front and rear positions, respectively. As shown in FIGS. 2, 3 and 9, the first lock / release member 17 having a substantially planar H shape provided with a pair of guide grooves 17c and 17d slidably engaged in the vertical direction. In addition, the first hinge is inserted into the deformation insertion hole 18a provided in the axial direction of the central portion of the first lock / release member 17 and positioned between the first guide member 15 and the second guide member 16 while being sandwiched between the first guide member 15 and the second guide member 16. The first A lock cam member 18 is inserted into and engaged with the first deformed shaft portion 10d of the shaft 10 and the first curved concave portion 18b is provided on the outer periphery, and in particular, as shown in FIGS. Positioned above lock / release member 17 Similarly, the deformation insertion hole 19a sandwiched between the first guide member 15 and the second guide member 16 and provided in the central portion axial direction thereof is inserted and engaged with the first deformation shaft portion 12d of the second hinge shaft 12. And a first B lock cam member 19 provided with a first recess 19b on the outer periphery. A projecting portion 15d provided with a female screw hole 15k for a mounting screw 6e for attaching the hinge case 6 is provided outward from the guide portion 15c of the first guide member 15.

  A second selective rotation restricting means 14b is provided adjacent to the first selective rotation restricting means 14a. As shown in FIG. 14, the second selective rotation restricting means 14b has a second A in which the first deformation shaft portions 10d and 12d of the first hinge shaft 10 and the second hinge shaft 12 are rotatably inserted. The first selective rotation restricting means 14a which has a bearing hole 16a and a second B bearing hole 16b, and which also serves as a second connecting member having a substantially side face shape provided with a guide portion 16c by rolling the center portion. The second guide member 16 and the first deformations of the first hinge shaft 10 and the second hinge shaft 12 provided to face the second guide member 16 as shown in FIGS. It has a 3A bearing hole 20a and a 3B bearing hole 20b through which the shaft parts 10d and 12d are rotatably inserted, and has a substantially bowl-shaped side surface provided with a guide part 20c by rolling the center part. Third connection of As shown in FIGS. 3 and 8, the third guide member 20 also serves as a material, and has a second A convex portion 21a and a second B convex portion 21b at the vertical position, and the second guide member 16 at the front and rear positions, respectively. A second lock / release member 21 having a substantially planar H shape provided with a pair of guide grooves 21c and 21d slidably engaged with the guide portion 16c of the third guide member 20 and the guide portion 20c of the third guide member 20 in the vertical direction; In particular, as shown in FIG. 3 and FIG. 11, it is located below the second lock / release member 21 and is sandwiched between the second guide member 16 and the third guide member 20 and provided in the axial direction of the central portion thereof. The deformed insertion hole 22a is inserted into and engaged with the first deformation shaft portion 10d of the first hinge shaft 10, and the second A lock cam member 22 provided with the second curved recess 22b on the outer periphery, particularly as shown in FIG. , Second lock / release Similarly, as shown in FIG. 12, the deformation insertion hole 23a provided in the axial direction of the central portion is located in the second portion of the material 21 and is sandwiched between the second guide member 16 and the third guide member 20. The second B lock cam member 23 is inserted into and engaged with the first deformation shaft portion 12d of the hinge shaft 12 and has a second recess 23b on the outer periphery.

As shown in FIGS. 9 and 11, both the first curved recess 18b and the second curved recess 22b have a width of about 90 ° . The size of the first concave portion 19b and the second concave portion 23b is the same as the size of the first B convex portion 17b and the second B convex portion 21b provided in the first lock / release member 17 and the second lock / release 21, respectively. . As shown in FIG. 19A, the positional relationship between the first curved recess 18b and the second curved recess 22b and the first recess 19b and the second recess 23b is as follows. Is closed at an angle of 0 °, the first curved recess 18b of the first A lock cam member 18 is located at an obliquely lower left position, and the outer periphery of the first A lock cam member 18 is in contact with the first A protrusion 17a. The first concave portion 19b of the first B lock cam member 19 is located immediately below and is engaged with the first B convex portion 17b of the first lock / release member 17. Further, as shown in (b), the second curved concave portion 22b of the second A lock cam member 22 is located at an obliquely upper left position, and its starting end portion is connected to the second A convex portion 21a of the second lock / release member 21. The second concave portion 23b of the second B lock cam member 23 faces upward, and the outer periphery thereof is in contact with the second B convex portion 21b.

  Next, the friction torque generating means 25 that operates when the first hinge shaft 10 and the second hinge shaft 12 are provided adjacent to the second selective rotation restricting means 14b will be described. The friction torque generating means 25 includes a first friction torque generating means 25a and a second friction torque generating means 25b. The first friction torque generating means 25a has a substantially bowl-shaped side surface in which a third A bearing hole 20a and a third B bearing hole 20b through which the first hinge shaft 10 and the second hinge shaft 12 are rotatably inserted are provided at the upper and lower portions thereof. A first friction plate 20 that also serves as a third guide member and a third connection member, a second friction plate 26 that also serves as the above-described fourth connection member provided to face the first friction plate 20, and A first friction washer 27 provided with a deformation insertion hole 27a through which the first deformation shaft portion 10d of the first hinge shaft 10 interposed between the first friction plate 20 and the second friction plate 26 is inserted and engaged; It is comprised with the 1st elastic means 34a of the elastic means 34 mentioned later.

  The second friction torque generating means 25b has a third A bearing hole 20a and a third B bearing hole through which the first deformation shaft portions 10d and 12d of the first hinge shaft 10 and the second hinge shaft 12 are rotatably inserted in the upper and lower portions thereof. The first friction plate 20 serving as the third connecting member and the third guide member having a substantially bowl shape on the side surface provided with 20b, and the above-described fourth connecting member provided to face the first friction plate 20 A second friction plate 26 that also serves as the second friction plate 26, and a deformation insertion in which the first deformation shaft portion 12d of the second hinge shaft 12 that is interposed between the second friction plate 26 and the first friction plate 20 is inserted and engaged. It comprises a second friction washer 28 having a hole 28a and a second elastic means 34b of the elastic means 34 described later. .

  As shown in FIG. 13, each of the first friction washer 27 and the second friction washer 28 has four small holes 27b, 27b, 27b, 27b and 28b, 28b for lubricating oil reservoirs on the surface thereof. 28b and 28b are provided. As described above, the elastic force of the elastic means 34 composed of the first elastic means 34a and the second elastic means 34b acts on the friction torque generating means 25, and the rotation of the first hinge shaft 10 and the second hinge shaft 12 is effected. Occasionally, friction torque is generated on both sides of the first friction washer 27 and the second friction washer 28 to improve the quality of the operation feeling when the first casing 2 and the second casing 3 are opened and closed. 2 and the second housing 3 have a function of stopping in a free stop.

Next, the stopper means 24 for restricting the rotation angle of the first hinge shaft 10 and the second hinge shaft 12 provided in the first selective rotation restricting means 14a will be described. As shown in FIGS. 3 and 18 , the stopper means 24 includes a first stopper means 24a and a second stopper means 24b. Among these , as shown in FIG. 9, the first stopper means 24a is a first projecting portion having an arcuate shape that protrudes in the axial direction outside the deformation insertion hole 18a of the first A lock cam member 18. and 18c, in particular as shown in FIG. 14, and a first stopper piece 16d provided on the outside of the 2A bearing hole 16a on the lower side of the stopper over the plate 16 serving as a second coupling member and the second guide member Thus, the rotation angle of the first hinge shaft 10 is restricted to 180 °. As shown in FIG. 10, the second stopper means 24b includes a second projecting portion 19c having an arc shape that protrudes in the axial direction outside the deformation insertion hole 19a of the first B lock cam member 19. , particularly as shown in FIG. 14, consists of a second stopper piece 16e provided on the outside of the 2B bearing hole 16b on the upper side of the stopper over the plate 16 serving as a second coupling member and the second guide member, the The rotation angle of the two hinge shaft 12 is restricted to 180 °.

Next, as shown in FIG. 3 in particular, suction means 31 is provided adjacent to the stopper means 24. The suction means 31 includes a first suction means 31a on the lower first hinge shaft 10 side and a second suction means 31b on the upper second hinge shaft 12 side. First, as shown in FIG. 15 and FIG. 16 , the first suction means 31a is a first 1A on the lower side of the cam plate 15 that also serves as the first connecting member and the first guide member of the first selective rotation restricting means 14a. The first A curved cam recess 15e and the first B curved cam recess 15f provided on the outer periphery and inner periphery around the bearing hole 15a, and the second deformation shaft portion 10e of the first hinge shaft 10 to the deformation insertion hole 32a. The first A curved cam convex portion 32b and the first B curved cam convex portion 32c provided on the outer and inner outer peripheries of the side surfaces are connected to the first A curved cam concave portion 15e and the first B curved cam concave portion. The first cam follower 32 provided so as to oppose 15 f and the first elastic means 34 a of the elastic means 34 provided in contact with the first cam follower 32 are configured. The first elastic means 34a includes a plurality of first disc springs 35 provided by inserting the second deformation shaft portions 10e of the first hinge shaft 10 through the insertion holes 35a provided in the central axis direction thereof. A first presser washer 37 provided by inserting and engaging a second deformation shaft portion 10e of the first hinge shaft 10 with a deformation insertion hole 37a provided in the axial direction of the central portion thereof in contact with one disc spring 35; The first tightening nut 39 is screwed to a male screw portion 10f provided on the free end portion side of the second deformation shaft portion 10e of the hinge shaft 10.

  The second suction means 31b is provided on the outer periphery and the inner periphery around the first B bearing hole 15b on the upper side of the cam plate 15 which also serves as the first connecting member and the second guide member of the second selective rotation restricting means 14b. The second A curved cam concave portion 15g and the second B curved cam concave portion 15h are inserted into and engaged with the second deformation shaft portion 12e of the second hinge shaft 12, and the large and small provided on the outer periphery and inner periphery of the cam plate 15 on one side surface thereof. The second A curved cam convex portion 15g and the second B curved cam convex portion 15h are inserted into and engaged with the second deformation shaft portion 10e of the first hinge shaft 10 through the deformation insertion hole 33a, and the second A curved cam convex portion 33b. And a second cam follower 33 provided so as to face the second B curved cam convex portion 33c, and a second elastic means 34b of the elastic means 34 provided in contact with the second cam follower 33. The The second elastic means 34b includes a plurality of second disc springs 36 provided by inserting the second deformation shaft portions 12e of the second hinge shaft 12 through the insertion holes 36a provided in the central portion axial direction. A second presser washer 38 provided by inserting and engaging the second deformation shaft portion 12e of the second hinge shaft 12 with a deformation insertion hole 38a provided in contact with the two disc springs 36 in the axial direction of the central portion; The second tightening nut 40 is screwed to a male screw portion 12f provided on the free end portion side of the second deformation shaft portion 12e of the hinge shaft 12.

  Next, the main body portion 4 a of the biaxial hinge 4 according to the present invention is configured to be accommodated in the hinge case 6. As shown in FIGS. 2, 3, and 16, the hinge case 6 has a cylindrical shape with a long hole shape in cross section, and an attachment hole 6 a is provided in the inside thereof so as to cross the central portion. A mounting portion 6b is provided. In the hinge case 6, the main body portion 4 a is accommodated from the second friction plate 26 that also serves as a fourth connecting member attached to the first hinge shaft 10 and the second hinge shaft 12. Further, a first insertion hole 6c for inserting the first suction means 31a on the first hinge shaft 10 side of the biaxial hinge 4 and a second suction means 31b on the second hinge shaft 12 side are provided at the upper and lower portions of the attachment portion 6b. A second insertion hole 6d for insertion is provided. The hinge case 6 is attached to the biaxial hinge 4 by screwing a mounting screw 6e through the mounting hole 6a into a female screw hole 15k provided in the protruding portion 15d of the first connecting member 15.

  And as shown in FIG.1 (b), the thing of the instruction symbol 7 is a hinge case of the other biaxial hinge 5. As shown in FIG. As shown in FIG. 1B, the hinge cases 6 and 7 are housed in housing recesses 2b and 3b provided in the first housing 2 and the second housing 3, respectively.

    Next, the operation of the biaxial hinge 4 according to the present invention will be described below. First, the biaxial hinge 4 according to the present invention is a biaxial hinge that relatively opens and closes the first housing 2 and the second housing 3 constituting the notebook computer 1 which is an example of the terminal device. The feature is that the first hinge shaft 10 attached to the first housing 2 side via the first attachment plate 11 and the second hinge shaft 12 attached to the second housing 3 side via the second attachment plate 13. Are connected to each other by four connecting members from the first connecting member 15 to the fourth connecting member 26 so as to be rotatable in parallel with each other. However, the first connecting member 15 also serves as the first guide member of the first selective rotation restricting means 14a and the cam plate of the suction means 31, and the second connecting member 16 is combined with the first selective rotation restricting means 14a and the second selective rotation restricting means 14a. The third connecting member 20 serves as the second guide member of the rotation restricting means 14b and the stopper plate of the stopper means 24. The third connecting member 20 serves as the third guide member of the second selective rotation restricting means 14b and the first friction plate of the friction torque generating means 25. Also, since the fourth connecting member 26 also serves as the second friction plate of the friction torque generating means 25, in the present specification, in the place where each means is described, it is not a connecting member but is a member name of each means. May be described. The number of first connecting members 15 to fourth connecting members 26 is not limited. In the present specification, when the first casing 2 and the second casing 3 are relatively opened and closed, the first selective rotation regulating means 14a and the second selective rotation regulating means 14b of the selective rotation regulating means 14 are 19 to 27, the first hinge shaft 10 and the second hinge shaft 12 are rotated in a predetermined order by switching the rotation direction of the first hinge shaft 10 and the second hinge shaft 12 in a plurality of stages. The body 3 is configured to be able to open and close by 180 ° in total by switching the opening and closing directions in the middle, and can be opened and closed over the range of 0 ° in the closed state to 360 ° in the fully opened state. It is in. However, the opening / closing order is not limited to that of the following embodiment. Further, the above is not limited in the order in which the first selective rotation restricting means 14a, the second selective rotation restricting means 14b, the stopper means 24, and the friction torque generating means 25 are arranged between the connecting members. There may be other arrangement methods other than the examples described below. Therefore, as is clear from the above description, in the claims of the present application, the connecting member is not limited to the first to fourth, but merely a connecting member.

  Next, the opening / closing operation of the first casing 2 and the second casing 3 will be described in more detail. First, the first casing 2 and the second casing 3 are closed, as shown in FIG. At 0 °, as shown in FIG. 19A, the first A protrusion 17a of the first lock / release member 17 of the first selective rotation restricting means 14a is in contact with the outer peripheral surface of the first A lock cam member 18. The first B convex portion 17 b is in contact with the first concave portion 19 b of the first B lock cam member 19. On the other hand, as shown in FIG. 19B, the second A convex portion 21a of the second lock / release member 21 of the second selective rotation restricting means 14b is the second curved concave portion 22b of the second A lock cam member 22. The outer peripheral surface of the second B lock cam member 23 is in contact with the second B convex portion 21 b of the second lock / release member 21.

  Therefore, in this 0 ° closed state, as shown in FIG. 19A, the second hinge shaft 12 cannot rotate in either the clockwise direction or the counterclockwise direction. As shown in (b), since the first hinge shaft 10 can rotate only in the clockwise direction, the first housing 2 rotates together with the first hinge shaft 10 in the clockwise direction with respect to the second housing 3. Open. Thus, the state in which the first hinge shaft 10 is rotated clockwise and the first housing 2 is opened to 45 ° clockwise with respect to the second housing 3 is shown in FIG. b).

  Next, the state in which the first housing 2 is further opened to 90 ° with respect to the second housing 3 from the state of FIGS. 20A and 20B is shown in FIGS. is there. According to the drawing, in this state, the first A convex portion 17a of the first lock / release member 17 of the first selective rotation control means 14a is the first of the first A lock cam member 18 as shown in FIG. The 1B convex part 17b is engaged with the 1st recessed part 19b of the 1B lock cam member 19, facing the curved recessed part 18b. Therefore, when only (a) is seen, the first housing 2 seems to continue to rotate clockwise and open, but as shown in (b), the second selective rotation restricting means 14b. The second A convex portion 21 a of the second lock / release member 21 is engaged with the terminal end portion of the second curved concave portion 22 b of the second A lock cam member 22, and the second B convex portion 21 b is the second B lock cam member 23. Therefore, further clockwise rotation of the first hinge shaft 10 is restricted. Accordingly, since the second hinge shaft 12 is allowed to rotate counterclockwise this time, the second casing 3 is rotated counterclockwise with respect to the first casing 2 and opened. Become. In this way, the state in which the second housing 3 is opened from 90 ° to 180 ° relative to the first housing 2 and opened to 135 ° in total is shown in FIGS. 22 (a) and 22 (b). Has been.

  The state in which the second housing 3 is opened up to 180 ° in total with respect to the first housing 2 is shown in FIGS. FIG. 23 is displayed rotated 90 degrees to the left from the state shown in FIG. In this state, the first housing 2 is in a state in which the keyboard side (not shown) is directed upward, and the second housing 3 is in a state in which the display side (not shown) is also directed upward. At this opening angle, as shown in (a), the first A convex portion 17a of the first lock / release member 17 of the one-selective rotation restricting means 14a is fitted into the first curved concave portion 18b of the first A lock cam member 18. The first B convex portion 17 b is in contact with the outer periphery of the first B lock cam member 19. Further, according to (b), the second A convex portion 21a of the second lock / release member 21 of the second selective rotation restricting means 14b is fitted into the second curved concave portion 22b of the second A lock cam member 22 for engagement. Although in the combined state, the second B convex portion 21 b is in contact with the outer periphery of the second B lock cam member 23. Therefore, the first hinge shaft 10 is restricted from rotating in either the clockwise direction or the counterclockwise direction, but the second hinge shaft 12 can be rotated in either the clockwise direction or the counterclockwise direction. Therefore, the second casing 3 can be opened with respect to the first casing 2 by further rotating the second hinge shaft 12 counterclockwise. Thus, the state in which the second housing 3 is rotated counterclockwise in the 270 ° direction with respect to the first housing 2 and opened to a total of 225 ° is shown in FIGS. 24 (a) and 24 (b). It is shown.

  The state in which the second housing 3 is further opened counterclockwise with respect to the first housing 2 and is opened to a total of 270 ° is shown in FIGS. In this state, as shown in (a), the first A convex portion 17a of the first lock / release member 17 of the first selective rotation restricting means 14a is in the first curved concave portion 18b of the first A lock cam member 18. The first B convex portion 17b is in contact with the outer peripheral portion of the first B lock cam member 19, while according to (b), the second selective rotation restricting means 14b The second A convex portion 21a of the 2 lock / release member 21 is fitted into the second curved concave portion 22b of the 2A lock cam member 22, and the second B convex portion 21b is spaced from the second concave portion 23b of the 2B lock cam member 23. Are facing each other. Therefore, the second hinge shaft 12 appears to be further rotatable in the counterclockwise direction. However, as shown in FIG. 18B, when the second hinge shaft 12 is rotated by 180 °, the second stopper means is provided. Since the second protrusion 19c of the first B lock cam member 19 abuts against the second stopper piece 16e provided on the stopper plate 16 of 24b, and further counterclockwise rotation of the second hinge shaft 12 is restricted. The two housings 3 cannot be further opened counterclockwise with respect to the first housing 2. On the other hand, as shown in FIGS. 25 (a) and 25 (b), the clockwise rotation of the first hinge shaft 10 is not restricted. It will be opened by rotating clockwise. The state in which the first hinge shaft 10 is rotated clockwise and the first housing 2 is opened clockwise with respect to the second housing 3 to a total of 315 ° is shown in FIG. It is shown in (b).

  FIGS. 27A and 27B show a state in which the first housing 2 is rotated 90 ° clockwise with respect to the second housing 3 and opened to a total of 360 °. The state of FIG. 27 is displayed by being rotated 90 ° to the right from the state shown in FIG. In this state, the first housing 2 and the second housing 3 overlap each other on the back side, and when the second housing 3 is directed upward as shown in the drawing, the notebook PC 1 is like a tablet. Can be used.

  Next, the case where the first housing 2 and the second housing 3 are closed and returned to the original position of 0 ° from the fully opened state of the first housing 2 and the second housing 3 at 360 ° will be described. This closing operation can be understood by tracing back from FIG. 27 to FIG. According to FIGS. 27A and 27B showing the fully opened state of the first housing 2 and the second housing 3, only the counterclockwise rotation of the first hinge shaft 10 is allowed, and the second hinge Since the clockwise rotation of the shaft 12 is restricted, first, the first housing 2 is rotated counterclockwise with respect to the second housing 3 and closed. FIGS. 25A and 25B show a state where the first housing 2 is rotated 90 ° counterclockwise with respect to the second housing 3 and closed. In this closed state, the counterclockwise rotation of the first hinge shaft 10 is restricted, and this time the second hinge shaft 12 is allowed to rotate in the clockwise direction. As shown in FIGS. 21A and 21B, the first housing 2 is closed to a closing angle of 90 ° by rotating clockwise by 180 ° with respect to 2. As shown in FIGS. When closed to this closing angle, the rotation of the second hinge shaft 12 is restricted by the second stopper means 24b, so this time the first hinge shaft 10 is allowed to rotate counterclockwise, and the first housing 2 rotates counterclockwise with respect to the second housing 3 and is closed to 0 ° in the fully closed state shown in FIG. When this closing angle is reached, as shown in FIG. 19B, the first hinge shaft 10 is rotated by 180 °, and the first stopper cam 16d of the first stopper means 24a is in contact with the first A lock cam member. Since the 18 first protrusions 18c come into contact with each other and the further rotation of the first hinge shaft 10 in the counterclockwise direction is restricted, the first housing 2 is further counterclockwise with respect to the second housing 3. It cannot be rotated.

  During the relative opening / closing operation of the first casing 2 and the second casing 3 described above, the first friction washer 27 of the first friction torque generating means 25a and the first friction washer 27 of the friction torque generating means 25, The second friction washer 28 rotates following each other when the first hinge shaft 10 and the second hinge shaft 12 are alternately rotated, and serves as a first friction plate 20 serving as a third connecting member and a fourth connecting member. Friction torque is generated between the two friction plates 26 and a stable stopping action at an arbitrary angle during the opening / closing operation of the first housing 2 and the second housing 3 can be performed.

  Further, the first suction means 31a and the second suction means 31b of the suction means 31 are arranged so that the first cam follower 32 is provided slightly before the opening and closing angles of 0 ° and 360 ° of the first housing 2 and the second housing 3. The first A curved cam convex portion 32b, the first B curved cam convex portion 32c, and the second A curved cam convex portion 33b and the second B curved cam convex portion 33c of the second cam follower 33 serve as the first connecting member. The suction function is exhibited by falling into the 1A curved cam recess 15e, the first B curved cam recess 15f, the second A curved cam recess 15g, and the second B curved cam recess 15h, and the second casing 3 is moved relative to the first casing 2. It automatically urges rotation in the opening direction and the closing direction. In addition, the suction means 31 can provide the operator with a click operation feeling that causes the first housing 2 and the second housing 3 to be automatically rotated and biased in the opening and closing direction at a predetermined opening and closing angle. Further, in the case where no latch means is provided between the first casing 2 and the second casing 3 for holding both in the closed state, the first casing 2 and the second casing 3 are in the closed state. It can serve as a latch means for preventing the natural opening.

  Therefore, as is apparent from the above description, the biaxial hinge 4 according to the present invention alternately connects the first housing 2 and the second housing 3 via the first hinge shaft 10 and the second hinge shaft 12, respectively. The opening / closing operation is performed by 180 ° to enable the opening / closing operation from 0 ° to 360 ° in total, but the opening / closing angle is not particularly limited.

  Then, after the notebook computer can be used in its original manner, the first housing 2 is bent clockwise with respect to the second housing 3, or the second housing is used as the first housing. On the other hand, it is bent in the counterclockwise direction so as to have a substantially L hour shape, a mountain shape, or a flat plate shape by overlapping them, so that the second casing 3 faces the operator and can be used in various ways as a tablet. Is something that can be done.

  As another embodiment, the first and second disc springs 35 and 36 used in the elastic means 34 are made of a spring washer, a compression coil spring, or a synthetic resin such as rubber having elasticity. It can be replaced with a manufactured product. In addition, the hinge cases 6 and 7 do not interfere with the functions of the biaxial hinges 4 and 5 even if they are not provided. However, if the hinge cases 6 and 7 are present, the biaxial hinges 4 and 5 are attached to the notebook computer 1. In this case, since the stopper means 24, the selective rotation restricting means 14, the friction torque generating means 25, the suction means 31 and the like are not exposed to the outside, there is an advantage that the appearance is neat.

  Since the present invention is configured as described above, the first housing and the second housing are opened in a predetermined order and opened and closed in a relatively 360 ° range, particularly in a terminal device such as a notebook personal computer or the like. It is preferably used as a two-axis hinge when it is used, but is particularly suitable for a notebook computer that is also used as a tablet at the same time.

DESCRIPTION OF SYMBOLS 1 Notebook PC 2 1st housing | casing 3 2nd housing | casing 4 2 axis | shaft hinge 4a Main-body part 5 2 axis | shaft hinge 6 Hinge case 6b Mounting part 6e Mounting screw 7 Hinge case 10 1st hinge shaft 12 2nd hinge shaft 14 Selective rotation Restricting means 14a First selective rotation restricting means 14b Second selective rotation restricting means 15 First connecting member (first guide member, cam plate)
15a 1A bearing hole 15b 1B bearing hole 15e 1A curved cam recess 15f 1B curved cam recess 15g 2A curved cam recess 15h 2B curved cam recess 16 second connecting member (second guide member, stopper plate)
16a 2nd A bearing hole 16b 2nd B bearing hole 16d 1st stopper piece 16e 2nd stopper piece 17 1st lock and release member 18 1st A lock cam member 18c 1st projection part 19 1st B lock cam member 19c 2nd projection part 20 3rd Connecting member (third guide member, first friction plate)
20a 3A bearing hole 20b 3B bearing hole 21 2nd lock / release member 22 2A lock cam member 23 2B lock cam member 24 Stopper means 24a 1st stopper means 24b 2nd stopper means 25 Friction torque generating means 25a 1st friction torque Generating means 25b Second friction torque generating means 26 Fourth connecting member (second friction plate)
26a 4A bearing hole 26b 4B bearing hole 27 1st friction washer 28 2nd friction washer 31 Suction means 31a 1st suction means 31b 2nd suction means 32 1st cam follower 32b 1st A curved cam convex part 32c 1st 1B curved cam Convex part 33 Second cam follower 33b Second A curved cam convex part 33c Second B curved cam convex part 34a First elastic means 34b Second elastic means

Claims (6)

  A biaxial hinge that opens and closes the first housing and the second housing of the terminal device relative to each other, a first hinge shaft attached to the first housing side, and a second hinge attached to the second housing side. The selection includes a selective rotation restricting means for selectively rotating the first hinge shaft and the second hinge shaft by connecting the hinge shaft to each other in parallel by a plurality of connecting members so as to be rotatable. A first lock / release member provided with a first rotation shaft for connecting the first hinge shaft and the second hinge shaft so as to be rotatable, and a first lock / release member that can be moved up and down. A first A lock cam member and a first B which are provided on the upper side and the lower side of the lock / release member so that the rotation is restricted by the first hinge shaft and the second hinge shaft, respectively. A first selective rotation restricting means comprising a rock cam member, and the first hinge shaft and the second hinge shaft provided adjacent to the first selective rotation restricting means are rotatably inserted and opposed to each other. A second lock / release member that can be moved up and down between the connected members, and the first hinge shaft and the second hinge shaft on the upper side and the lower side, respectively, with the second lock / release member interposed therebetween. A second selective rotation restricting means comprising a second A lock cam member and a second B lock cam member provided with restricted rotation, and the first selective rotation restricting means and the second selective rotation restricting means. By opening and closing the first casing and the second casing in a predetermined order by switching their opening / closing directions in a plurality of stages, a plurality of opening ranges from 0 ° in the closed state to 360 ° in the fully opened state. Corner Characterized in that form so that it can be opened and closed for each biaxial hinge.   The biaxial hinge includes stopper means including first stopper means and second stopper means, and the first stopper means is one of the first selective rotation restricting means and the second selective rotation restricting means. A first stopper piece provided on the lower side of the stopper plate also serving as a connecting member, and a first protrusion provided at a position facing the first stopper piece on the outer periphery of the first A lock cam member or the second A lock cam member. The second stopper means includes a second stopper piece provided on the upper side of the stopper plate that also serves as the connecting member, and the second stopper piece on the outer periphery of the first B lock cam member or the second B lock cam member. 2. The biaxial hinge according to claim 1, comprising: a second protrusion provided at a position opposite to the second protrusion.   The biaxial hinge includes a friction torque generating means including a first friction torque generating means and a second friction torque generating means. The first friction torque generating means includes a first friction plate serving also as the connecting member, A first friction washer attached to the first hinge shaft to restrict rotation between a second friction plate constituting another connecting member provided opposite to the first friction plate; the first friction plate; A first elastic means that presses both sides of the first friction washer across the first friction washer, and the second friction torque generating means includes the first friction plate between the first friction plate and the second friction plate. Let the second hinge shaft regulate the rotation 2. The second friction washer that is attached, and a second elastic means that presses the first friction plate and the second friction plate to both sides of the second friction washer. A biaxial hinge as described in 1. The biaxial hinge has suction means composed of first suction means and second suction means, and the first suction means is a cam plate bearing provided by rotatably inserting the first hinge shaft. A first A curved cam recess and a first B curved cam recess provided around the hole, and attached to the first hinge shaft while being restricted in rotation and facing the first A curved cam recess and the first B curved cam recess. A first cam follower having a first A curved cam convex portion and a first B curved cam convex portion, the first A curved cam concave portion and the first B curved cam concave portion, and the first A curved cam convex portion and the first B curved cam convex portion. A second elastic bay provided around the bearing hole of the cam plate, wherein the second hinge shaft is rotatably inserted therethrough. A recessed cam portion and the 2B curved cam recess, attached is restricted to rotate in the second hinge shaft, the 2A curved cam protrusion on the side facing the first 2A curved cam recesses and said second 2B curved cam recess and the A second cam follower having a 2B curved cam convex portion; and a second elastic means that press-contacts the second A curved cam concave portion and the second B curved cam concave portion with the second A curved cam convex portion and the second B curved cam convex portion. The biaxial hinge according to claim 1, which is configured. The biaxial hinge has a hinge case that covers the main body part from the first friction plate that also serves as a connecting member of the friction torque generating means, and the hinge case attaches an attachment portion provided in the hinge case to the main body part. The biaxial hinge according to claim 3 , wherein the hinge is detachably attached via a screw.   A terminal device using the biaxial hinge according to any one of claims 1 to 5.

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