JP6338177B2 - 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 PCs, mobile PCs, 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. After opening the first housing and the second housing in the vertical direction from 90 degrees to 180 degrees, and further horizontally moving the second housing relative to the first housing. There are two-axis hinges that consist of two axes so that they can rotate. 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 more than 180 degrees, and the first member The member and the second member are not configured to be opened and closed with regularity.

JP 2009-063039 A

  In recent years, the needs required for terminal devices such as notebook personal computers have diversified, and the functions of terminal devices have also diversified. Under such circumstances, in order to have a function as a tablet at the same time as being able to be used as, for example, a notebook personal computer, the first housing and the second housing constituting the terminal device are brought from a closed state of 0 degree via a hinge. In order to be able to regulate the opening / closing operation of the other casing at the time of opening / closing operation of one casing up to 360 degrees, so that the order of the opening / closing operations can be regulated 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.

  Accordingly, 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 360 degrees in total in a vertical direction of 360 degrees. 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.

  The present applicant has proposed an application (Japanese Patent Application No. 2013-247542) for a biaxial hinge that can meet such further demands. This two-axis hinge has a structure in which a first hinge shaft attached to the first housing side and a second hinge shaft attached to the second housing side are connected in parallel by at least a first connecting member and a second connecting member. A first selective rotation restricting means and a second selective rotation restricting which are provided so as to be rotatable relative to each other and selectively rotate the first hinge shaft and the second hinge shaft between the first hinge shaft and the second hinge shaft. The first casing and the second casing can be opened and closed in a predetermined order by the first selective rotation restricting means and the second selective rotation restricting means. It is configured to be able to open and close between 0 degrees of the state and 360 degrees of the fully opened state.

  The first selective rotation restricting means is provided between the second connecting member and the slide guide member so as to be slidable in the vertical direction independently between the first hinge shaft and the second hinge shaft. A first lock member having a first cam protrusion and a second cam protrusion at the upper part and the lower part, and the first hinge shaft and the second hinge shaft are inserted and engaged with each other with the first lock member interposed therebetween. A first lock / release member and a second lock / release member having a cam recess and a first B cam recess and a second A cam recess and a second B cam recess; A third lock / release member and a fourth lock / release member that are attached to the shaft and the second hinge shaft while being constrained in rotation, and the third lock / release member and the fourth lock / release member; A movable stopper which is rotatably provided between the members and engages with the third lock / release member and the fourth lock / release member according to the rotation angle, and is rotatable on the first hinge shaft and the second hinge shaft. A first stopper lever and a second stopper lever which are attached and engaged with the moving stopper, and are pressed against the third lock / release member and the fourth lock / release member by the second A elastic means and the second B elastic means. It is composed of.

  However, there is a new problem that the manufacturing cost is high because there are many components and the structure is considerably complicated. Manufacturers of terminal equipment such as notebook personal computers are very demanding for cost reductions in their components.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a biaxial hinge capable of opening and closing a first housing constituting a keyboard portion and a second housing constituting a display portion over a relatively 360 degrees, in the first housing. While satisfying the demand that the body and the second housing can be held in a stable stop state at an arbitrary opening / closing angle, the component parts are omitted as much as possible, the structure is simplified, and a low-cost manufacturing biaxial hinge is provided. is there.

In order to solve the above problems, the invention 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 attached to the first casing side. A first hinge shaft and a second hinge shaft attached to the second housing are connected to each other 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 shaft Provided with selective rotation restricting means for selectively rotating the first hinge shaft and the second hinge shaft, the selective rotation restricting means projects the first lock part on one side. The first hinge shaft and the second hinge shaft are rotatably inserted in the upper and lower portions across the first lock portion, and can be moved in the radial direction of the first hinge shaft and the second hinge shaft. A first slide plate, and a second lock portion projectingly provided on the side facing the first slide plate and facing the first lock plate, and the second lock portion on the upper and lower portions of the second lock portion. A second slide plate that is rotatably inserted in the first hinge shaft and the second hinge shaft and is movable in the radial direction of the first hinge shaft and the second hinge shaft; and the first slide plate, said first locking portion and provided to be constrained to rotate located on the first hinge shaft below the second locking portion Rutotomoni, and the first locking portion and the second locking portion between the second slide plate in a third locking cam portion and the first locking cam portion which contacts individually, via the first locking cam portion and the third locking cam portion by the rotation angle of the first hinge shaft A first lock releasing member that regulates the rotation allowable angle of the serial first sliding plate and the first hinge shaft by selectively movable up and down the second slide plate, said first sliding plate and the second sliding plate said first locking portion and provided to be constrained to rotate positioned in the second hinge shaft above the second locking portion Rutotomoni, contact individually to the second locking portion and said first locking portion between the A second lock cam portion and a fourth lock cam portion, and the first slide plate and the second slide plate are selected via the second lock cam portion and the fourth lock cam portion according to the rotation angle of the second hinge shaft. And a second lock / release member that restricts the allowable rotation angle of the second hinge shaft by allowing it to move vertically, and by this selective rotation restricting means, The first hinge shaft and the second hinge shaft can be rotated in order, and the first casing and the second casing can be rotated from 0 degree in a closed state to 360 degrees in a fully opened state. It can be opened and closed between.

  According to a second aspect of the present invention, the first lock cam portion having a first curved concave portion on a side facing the first convex portion of the first lock portion of the first slide plate is provided on the first lock / release member. A third lock cam portion having a second curved concave portion is integrally provided on a side of the second slide plate facing the third convex portion of the second lock portion, and the second lock / release member includes the first slide plate. A second lock cam portion having a first recess on the side facing the second convex portion of the first lock portion, and a second recess on the side facing the fourth convex portion of the second lock portion of the second slide plate. The fourth lock cam portion is provided integrally.

  Further, in the invention described in claim 3, the biaxial hinge has stopper means composed of first stopper means and second stopper means, and the first stopper means is below the stopper plate that also serves as the first connecting member. A first A bearing hole through which the first hinge shaft provided in the portion is rotatably inserted; a first stopper piece provided outside the first A bearing hole; and the first hinge shaft side. The second protrusion is provided on the upper portion of the stopper plate which also serves as the first connecting member. A first B bearing hole through which the two hinge shafts are rotatably inserted, a second stopper piece provided outside the first B bearing hole, and the second hinge shaft It characterized by its rotation angle was provided on the side of it which is constituted by the second protruding portion abutting on the second stopper piece.

Furthermore, in the invention according to claim 4, the biaxial hinge includes friction torque generating means including first friction torque generating means and second friction torque generating means, and the first friction torque generating means is the third friction torque generating means. A first friction portion provided around one side of the 3A bearing hole where the first hinge shaft is rotatably inserted in a lower portion of the connecting member, and the first friction portion in contact with the first friction portion. A first friction washer that is restricted in rotation by one hinge shaft, and a first side portion of the fourth A bearing hole in which the first hinge shaft is rotatably inserted in a lower portion of the fourth connecting member. A second friction portion provided around the second friction torque generating means, and the second friction torque generating means is disposed at the upper portion of the third connecting member. A third friction part provided around one side of the 3B bearing hole through which the hinge shaft is rotatably inserted, and the second hinge shaft is restricted from rotating in contact with the third friction part. A second friction washer provided, and a fourth friction portion provided around one side of the fourth B bearing hole when the second hinge shaft is rotatably inserted in an upper portion of the fourth connecting member. It is characterized by comprising.

  Further, in the invention described in claim 5, the biaxial hinge has suction means composed of first suction means and second suction means, and the first suction means is rotatably inserted through the first hinge shaft. 1A curved cam recess and 1B curved cam recess provided around the other side of the 4A bearing hole of the fourth connecting member provided, and the rotation of the first hinge shaft is restricted. A first cam follower having 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, and the first A curved cam concave portion and the first B curved shape. The cam recess and the first A curved cam convex portion and the first B curved cam convex portion are configured by first elastic means for press-contacting, and the second suction means is provided by inserting the second hinge shaft rotatably. Just A second A curved cam concave portion and a second B curved cam concave portion provided around the other side of the fourth B bearing hole of the fourth connecting member, and the second hinge curved shaft are attached to the second hinge shaft in a restricted rotation. 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 cam concave portion and the second B curved cam concave portion, the second A curved cam concave portion, the second B curved cam concave portion and the second A The curved cam convex portion and the second B curved cam convex portion are configured by second elastic means that press-contacts the curved cam convex portion and the second B curved cam convex portion.

Furthermore, in the invention described in claim 6, the biaxial hinge according to claim 3 has a hinge case that covers the main body portion from the stopper plate that also serves as the first connecting member, and the hinge case is provided inside the hinge case. The attachment portion is detachably attached to the main body portion via an attachment shaft.

  Further, the invention according to claim 7 is characterized in that the mounting shaft has one end attached to a connecting member of the friction torque generating means of the main body portion and the other end attached to the attaching portion of the hinge case. To do.

  The invention according to claim 8 is a terminal device characterized by using the biaxial hinges of the respective configurations.

  Since the present invention is configured as described above, according to the first aspect of the present invention, the first hinge shaft and the second hinge can be formed by the selective rotation restricting means with a simpler structure in which the components are omitted from the conventional one. By rotating the shaft in a predetermined order, the first casing and the second casing can be regularly opened and closed in a predetermined order over a range of 0 to 360 degrees.

  According to the second aspect of the present invention, there are two lock / release members that have been conventionally two or more, ie, the first lock / release member and the second lock / release member, and the first lock / release member includes the first lock cam. And the third lock cam portion, and the second lock / release member is provided with the second lock cam portion and the fourth lock cam portion, thereby further simplifying the configuration and reducing the manufacturing cost.

  Next, according to the third aspect of the present invention, the first hinge shaft and the second hinge shaft are rotated in a predetermined order by the selective rotation restricting means with a simple configuration in which components are omitted from the conventional one. Thus, the first casing and the second casing can be selectively opened and closed regularly in a predetermined order over a range of 0 degrees to 360 degrees, and the rotation angles of the first hinge shaft and the second hinge shaft are adjusted. By restricting by the stopper means, the first casing and the second casing can be stably stopped and held at a predetermined opening / closing angle.

  According to a fourth aspect of the present invention, the first hinge shaft and the second hinge shaft are rotated in a predetermined order by the selective rotation restricting means with a simple configuration in which the components are omitted from the conventional one. The first casing and the second casing can be regularly opened and closed in a predetermined order over a range of 0 to 360 degrees, and the rotational torque is created by the friction torque generating means. In addition, the operation feeling is improved, and the first casing and the second casing can be stopped and held at an arbitrary opening / closing angle.

  According to a fifth aspect of the present invention, the first hinge shaft and the second hinge shaft are rotated in a predetermined order by the selective rotation restricting means with a simple configuration in which the components are omitted from the conventional one. The first casing and the second casing can be opened and closed regularly in a predetermined order over a range of 0 to 360 degrees, and the first casing and the second casing are opened at a predetermined opening and closing angle by the suction means. The operator can be given a sense of clicking to stop the two cases by automatically urging and rotating the two cases in the opening / closing direction. In addition, when no latch means is provided between the first casing and the second casing to hold both of them in the closed state, the first casing and the second casing are naturally closed when being carried in the closed state. It can serve a function to prevent it from opening.

  Further, according to the sixth aspect of the invention, since the main body portion of the biaxial hinge cannot be seen from the outside by the hinge case, an effect that the external appearance of the biaxial hinge becomes clear can be obtained.

  In addition, according to the seventh aspect of the present invention, since the main body portion of the biaxial hinge is not visible from the outside with the hinge case, the external appearance of the biaxial hinge becomes clear, Since the elastic force of the elastic means acts on the friction torque generating means and the suction means and does not act on the selective rotation restricting means, it is possible to obtain an effect that the opening / closing operation becomes smooth.

  According to the eighth aspect of the present invention, it is possible to provide a terminal device that can open and close the first casing and the second casing in a predetermined order with a regularity in a predetermined order and a maximum of 360 degrees in total.

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. The 1st hinge shaft of the biaxial hinge which concerns on this invention is shown, (a) is the front view, (b) is the top view, (c) is the left view of (a). The 2nd hinge shaft of the biaxial hinge which concerns on this invention is shown, (a) is the front view, (b) is the top view, (c) is the left view of (a). It is a perspective view of the stopper plate which serves also as the 1st connection member of the stopper means of the biaxial hinge which concerns on this invention. The 1st slide plate and 2nd slide plate of the biaxial hinge which concern on this invention are shown, (a) Each side view, (b) is each perspective view. 1 shows a first lock / release member of a biaxial hinge according to the present invention, wherein (a) is a front view thereof, (b) is a left side view thereof (c) is a right side view thereof, and (d) is a top view thereof. perspective view, (e) is a perspective view seen from the lower side. It shows a second locking release member of a biaxial hinge according to the present invention, viewed (a) is a front view, (b) is a left side view thereof (c) is a right side view thereof, (d) from the upper side perspective view, (e) is a perspective view seen from the lower side. The 1st and 2nd friction washer of the biaxial hinge which concerns on this invention is shown, (a) is the right view, (b) is the left view. The 3rd connection member of the biaxial hinge which concerns on this invention is shown, (a) is the left view, (b) is the right view. The 4th connection member of the biaxial hinge which concerns on this invention is shown, (a) is the right view, (b) The left view. The 1st cam follower and 2nd cam follower of the biaxial hinge which concern on this invention are shown, (a) is the right view, (b) is the front view. The hinge case of the biaxial hinge which concerns on this invention is shown, (a) is the right view, (b) is the sectional view on the AA line of (a). FIGS. 2A and 2B show a mounting shaft of the hinge case shown in FIGS. 2 and 3, wherein FIG. 2A is a front view thereof, and FIG. It is explanatory drawing of operation | movement of the stopper means of the biaxial hinge which concerns on this invention, (a) shows the state at the time of closing of a 1st housing | casing and a 2nd housing | casing, (b) is a 1st housing | casing and 1st housing | casing. The two cases are shown in a state where they are opened 180 degrees. FIG. 2 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 angle of the second housing is closed with respect to the first housing is 0 degree, and FIG. The state of the 1st lock cam part of a means and the 2nd lock cam part is shown, and (b) shows the state of the 3rd lock cam part of the selective rotation control means and the 4th lock cam part. For explaining the state during operation of the biaxial hinge according to the present invention, that is, the state during operation from the angle 0 degree to 90 degrees of the closed state of the first housing with respect to the second housing, (A) shows the states of the first lock cam portion and the second lock cam portion of the selective rotation restricting means, and (b) shows the states of the third lock cam portion and the fourth lock cam portion of the 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 where the opening angle of the first housing is 90 degrees with respect to the second housing; FIG. The states of the lock cam portion and the second lock cam portion are shown, and (b) shows the states of the third lock cam portion and the fourth lock cam portion of the selective rotation restricting means. FIG. 2 is a diagram for explaining a state during operation of the biaxial hinge according to the present invention, that is, a state during operation from the opening angle of 90 ° to 180 ° with respect to the first housing of the second housing; Shows the states of the first lock cam portion and the second lock cam portion of the selective rotation restricting means, and (b) shows the states of the third lock cam portion and the fourth lock cam portion of the 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 housing with respect to the first housing is 180 degrees. FIG. The states of the lock cam portion and the second lock cam portion are shown, and (b) shows the states of the third lock cam portion and the fourth lock cam portion of the selective rotation restricting means. FIG. 2 is a diagram for explaining a state during operation of the biaxial hinge according to the present invention, that is, a state during operation from an opening angle of 180 ° to 270 ° with respect to the first housing of the second housing; Shows the states of the first lock cam portion and the second lock cam portion of the selective rotation restricting means, and (b) shows the states of the third lock cam portion and the fourth lock cam portion of the selective rotation restricting means. FIG. 2 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 with respect to the first casing is 270 degrees; FIG. The states of the lock cam portion and the second lock cam portion are shown, and (b) shows the states of the third lock cam portion and the fourth lock cam portion of the selective rotation restricting means. FIG. 2 is a view for explaining a state during operation of the biaxial hinge according to the present invention, that is, a state during operation from the opening angle of 270 degrees to 360 degrees of the first housing with respect to the second housing; Shows the states of the first lock cam portion and the second lock cam portion of the selective rotation restricting means, and (b) shows the states of the third lock cam portion and the fourth lock cam portion of the 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 first housing is 360 degrees with respect to the second housing; FIG. The states of the lock cam portion and the second lock cam portion are shown, and (b) shows the states of the third lock cam portion and the fourth lock cam portion of the selective rotation restricting means.

  Hereinafter, an embodiment in which the biaxial hinge according to the present invention is used in a notebook personal computer which is an example of a terminal device will be described with reference to the drawings. However, those using the biaxial hinge according to the present invention are limited to a notebook personal computer. However, it can also be used for mobile personal computers, PDAs and other terminal devices having a first housing and a second housing that are connected to each other so that they can be opened and closed within a range of 180 degrees or more in the vertical direction. is there.

  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 16 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. Particularly, as shown in FIGS. 3 and 4, a mounting plate having a flat cross-sectional shape from one end thereof and having mounting holes 10b and 10b on the surface thereof. Portion 10a, flange portion 10c provided subsequent to mounting plate portion 10a, circular shaft portion 10d provided subsequent to flange portion 10c, and the circular shaft provided subsequent to circular shaft portion 10d. The first deformed shaft portion 10e having a substantially elliptical cross section having a slightly smaller diameter than the portion 10d, and the same cross section having a slightly smaller diameter than the first deformed shaft portion 10e provided following the first deformed shaft portion 10e. A second deformation shaft portion 10f having a substantially elliptical shape, a male screw portion 10g provided subsequent to the second deformation shaft portion 10f, and a first protrusion 10h provided on the outer periphery of the circular shaft portion 10d. And composed of To have.

  A first attachment plate 11 is attached to the attachment plate portion 10a. The attachment method of the first attachment plate 11 to the attachment plate portion 10a is the same as that of the attachment holes 10b and 10b of the first hinge shaft 10 and the first attachment plate 10a. This is done by caulking each end of the mounting pins 10i, 10i with flanges through the mounting holes 11a, 11a of the plate 11. 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 10i and 10i 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 side thereof and provided with mounting holes 12b and 12b on the surface thereof, a flange portion 12c provided following the mounting plate portion 12a, A circular shaft portion 12d provided subsequent to the flange portion 12c, a first deformation shaft portion 12e having a substantially elliptical cross section having a slightly smaller diameter than the circular shaft portion 12d provided subsequent to the circular shaft portion 12d, A second deformed shaft portion 12f having a substantially smaller cross-sectional shape with a slightly smaller diameter than the first deformed shaft portion 12e provided following the first deformed shaft portion 12e, and the second deformed shaft portion. After 12f A male thread portion 12g which is, and a second protrusion 12h provided on the outer periphery of the circular shaft portion 12d.

A second attachment plate 13 is attached to the attachment plate portion 12a. The attachment method of the second attachment plate 13 to the attachment plate portion 12a is the same as the attachment holes 12b and 12b of the second hinge shaft 12 and the second attachment plate 12a. This is done by caulking the ends of the mounting pins 12i, 12i with flanges through the mounting holes 13a, 13a of the plate 13. And the 2nd attachment plate 13 is attached to the lower surface side of the 2nd housing | casing 3 using the attachment screw which is not shown in figure through the attachment holes 13b, 13b .... provided in the said 2nd attachment plate 13. It is. The attachment pins 12i and 12i may be attachment screws.

  Next, the stopper means 9 that regulates the rotation angle of the first hinge shaft 10 and the second hinge shaft 12 will be described. As shown in FIGS. 3 to 6 and 16, the stopper means 9 includes a first stopper means 9 a and a second stopper means 9 b, of which the first stopper means 9 a is the first hinge shaft 10. The first A bearing hole 14a of the stopper plate 14 also serving as a first connecting member having a first A bearing hole 14a in which the circular shaft portion 10d is rotatably supported, and is positioned outside the first A bearing hole 14a. The first stopper piece 14c having an arcuate shape and the first protrusion 10h provided on the outer periphery of the circular shaft portion 10d of each first hinge shaft 10 have a rotation angle of 180 degrees. It is something to regulate. The second stopper means 9b includes the first B bearing hole 14b of the stopper plate 14 also serving as a first connecting member having a first B bearing hole 14b that rotatably supports the circular shaft portion 12d of the second hinge shaft 12. The second stopper piece 14d having an arc shape provided on each outer side of the first B bearing hole 14b, and a second protrusion 12h provided on the outer periphery of the circular shaft portion 12d of the second hinge shaft 12, The rotation angle of the second hinge shaft 12 is restricted to 180 degrees.

Adjacent to the stopper means 9, a selective rotation restricting means 16 is provided, particularly as shown in FIG. The selective rotation restricting means 16 has a second A bearing hole 15a and a second B bearing hole 15b through which the first deformed shaft portions 10e and 12e of the first hinge shaft 10 and the second hinge shaft 12 are rotatably inserted. The second connecting member 15 provided in contact with the first connecting member (stopper plate) 14 is located at the center of one side surface, and the first convex portion 17a and the second convex portion 17b are provided at the upper and lower positions thereof. The first lock portion 17c is provided, and the first deformed shaft portions 10e and 12e of the first hinge shaft 10 and the second hinge shaft 12 are inserted vertically in the first lock portion 17c. The first slide plate 17 provided with the first guide hole 17d and the second guide hole 17e, and the first slide plate 17 is located at a central portion on one side face at a position opposite to the first slide plate 17, and the first slide plate 17 A second lock portion 22c having a third convex portion 22a and a fourth convex portion 22b provided in the vertical position on the side facing the portion 17c is provided, and the first hinge shaft 10 is positioned in the vertical position across the second lock portion 22c. The second slide plate 22 provided with the elliptical third guide hole 22d and the fourth guide hole 22e through which the first deformation shaft portions 10e and 12e of the second hinge shaft 12 are inserted, the first lock portion 17c and the second The first hinge shaft 10 is located below the two lock portions 22c and is sandwiched between the first slide plate 17 and the second slide plate 22 and into the first deformation insertion hole 21a provided in the axial direction of the shaft center portion. The first deforming shaft portion 10e is inserted and engaged, and the first spacer ring portion 21b inserted into the first guide hole 17d of the first slide plate 17 on both sides and the second slide plate 22 3 A first lock / release member 21 provided with a second spacer ring portion 21c inserted into the guide hole 22d, and located above the first lock portion 17c and the second lock portion 22c, and the first slide plate The first deformation shaft portion 12e of the second hinge shaft 12 is inserted and engaged with a second deformation insertion hole 23a provided between the shaft 17 and the second slide plate 22 in the axial direction thereof. A third spacer ring portion 23b inserted into the second guide hole 17e of the first slide plate 17 and a fourth spacer ring portion 23c inserted into the fourth guide hole 22e of the second slide plate 22 are provided. And 2 lock / release member 23. The first lock / release member 21 is further provided with a first lock cam portion 19 provided with a wide first curved concave portion 19a on the outer periphery on one side from the radial center, and the outer periphery on the other side. In addition, a third lock cam portion 24 provided with a wide second curved recess 24a at a position different from the first curved recess 19a in the circumferential direction is provided. The second lock / release member 23 is further provided with a second lock cam portion 20 having a first recess 20a having a narrow width on the outer periphery on one side from the central portion in the radial direction, and on the outer periphery on the other side. A fourth lock cam portion 25 having a second recess 25a is provided at a position different from the first recess 20a in the circumferential direction.

  Regarding the size of the first curved recess 19a and the second curved recess 24a, the former has a width of about 90 degrees and the latter has a width of about 180 degrees, and the installation positions thereof are different. The size of the first concave portion 20a and the second concave portion 25a is the same as the size of the second convex portion 17b and the fourth convex portion 22b provided on the first slide plate 17 and the second slide plate 22, respectively. As shown in FIGS. 17A and 17B, the positional relationship between the first curved concave portion 19a and the second curved concave portion 24a and the first concave portion 20a and the second concave portion 25a is as follows. When the housing 3 is closed at an angle of 0 degrees, the first curved concave portion 19a of the first lock cam portion 19 is in a position diagonally downward to the left, and the outer periphery of the first lock cam portion 19 is directed to the first convex portion 17a. The first concave portion 20a of the second lock cam portion 20 is in a position immediately below, and is engaged with the second convex portion 17b of the first slide plate 17. Further, as shown in (b), the second curved concave portion 24a of the third lock cam portion 24 is located at an obliquely upper left position, and its starting end is engaged with the third convex portion 22a of the second slide plate 22. In addition, the second recess 25a of the fourth lock cam portion 25 faces upward. Each 1st lock cam part 19, the 2nd lock cam part 20, the 3rd lock cam part 24, and the 4th lock cam part 25 have the above positional relationships.

  Further, the axial widths of the first to fourth spacer ring portions 21b, 21c and 23b, 23c are slightly wider than the thicknesses of the first slide plate 17 and the second slide plate 22, as described above. Thus, regardless of the elastic pressure of the elastic means 34, consideration is given to reducing the friction resistance when the first slide plate 17 and the second slide plate 22 slide in the vertical direction.

Adjacent to the selective rotation restricting means 16, a friction torque generating means 26 is provided, particularly as shown in FIG. The friction torque generating means 26 includes a first friction torque generating means 26a on the first hinge shaft 10 side and a second friction torque generating means 26b on the second hinge shaft 12 side. The friction torque generating means 26a includes a first friction portion 27d around a third A bearing hole 27a for rotatably inserting a second deformation shaft portion 10f of the first hinge shaft 10 provided on the third connecting member 27, and a first friction portion 27d. Nana rice processing is performed on both sides of the second deformation shaft portion 10f of the first hinge shaft 10 inserted into and engaged with the third deformation insertion hole 28a in the axial direction of the axial center portion provided corresponding to the 3A bearing hole 27a. A first friction washer 28 applied, and a fourth A bearing hole 3 provided adjacent to the first friction washer 28 at a position below it. a through which the second deformation shaft portion 10f of the first hinge shaft 10 is inserted, and the third deformation shaft portion 10h of the fourth connecting member 30 provided through the second deformation shaft portion 10f of the first hinge shaft 10 and the insertion hole 35a. And a first disc spring 35 composed of a plurality of first disc springs 35 that are press-contacted via a first presser washer 37 by a first tightening nut 39 attached to a male screw portion 10g provided on the first hinge shaft 10. It is comprised with the elastic means 34a.

The second friction torque generating means 26b includes a second friction portion 27e around a third B bearing hole 27b for rotatably inserting a second deformation shaft portion 12f of the second hinge shaft 12 provided in the third connecting member 27. Nana rice is formed on both sides of the second deformation shaft portion 12f of the second hinge shaft 12 inserted into and engaged with the fourth deformation insertion hole 29a in the axial direction of the axial center portion provided corresponding to the 3B bearing hole 27b. A second friction washer 29 that has been processed and a 4B bearing hole 30b that is provided adjacent to the second friction washer 29 at the upper and lower positions thereof are provided by passing the second deformation shaft portion 12f of the second hinge shaft 12 through the second deformation washer 29b. The fourth friction part 30i of the fourth connecting member 30 and the second deformation shaft part 12f of the second hinge shaft 12 are inserted through the insertion hole 36a, and the second The second elastic means 34b is composed of a plurality of second disc springs 36 that are press-contacted via a second presser washer 38 with a second tightening nut 40 attached to a male screw portion 12g provided on the screw shaft 12. Yes.

In particular, as shown in FIG. 3, a suction means 31 is provided adjacent to the friction torque generating means 26. 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, the first suction means 31a includes large and small first A curved cam recessed portions 30c and 1B curved cam recessed portions 30d provided around the fourth A bearing hole 30a of the fourth connecting member 30, and a fifth modification thereof. The second deformation shaft portion 10f of the first hinge shaft 10 is inserted into and engaged with the insertion hole 32a, and the large and small first A curved cam convex portions 32b and first B curved cam convex portions 32c provided on the outer side and the inner side of the side surface thereof. The first cam follower 32 provided to face the first A curved cam recess 30c and the first B curved cam recess 30d, and the insertion holes 35a provided in contact with the first cam follower 32 and in the axial direction of the central portion thereof. A first elastic means 34a comprising a plurality of first disc springs 35 provided through the respective second deformation shaft portions 10f of one hinge shaft 10, and an axial direction of the central portion in contact with the first elastic means 34a A first pressing washer 37 provided by inserting and engaging the second deformation shaft portion 10f of the first hinge shaft 10 into the provided deformation insertion hole 37a, and a free end of the second deformation shaft portion 10f of the first hinge shaft 10 The first tightening nut 39 is screwed to a male screw portion 10g provided on the portion side.

The second suction means 31b includes large and small second A curved cam recesses 30e and 2B curved cam recesses 30f provided around the fourth B bearing hole 30b of the fourth connecting member 30, and a sixth modified insertion hole thereof . 33a is inserted and engaged with the second deformation shaft portion 12f of the second hinge shaft 12, and the large and small second A curved cam convex portions 33b and second B curved cam convex portions 33c provided on the outer side and the inner side of the side surface thereof are The second cam follower 33 provided to face the 2A curved cam concave portion 30e and the second B curved cam concave portion 30f, and the second hinge to each insertion hole 36a provided in contact with the second cam follower 33 and in the central axis direction thereof A second elastic means 34b composed of a plurality of second disc springs 36 provided by inserting the respective second deformation shaft portions 12f of the shaft 12, and provided in the axial direction of the central portion in contact with the second elastic means 34b. A second presser washer 38 provided by inserting and engaging the second deformation shaft portion 12f of the second hinge shaft 12 into the shape insertion hole 38a, and the free end side of the second deformation shaft portion 12f of the second hinge shaft 12 And a second tightening nut 40 screwed onto a male screw portion 12g provided on the head.

  That is, the hinge case 6 accommodates the main body portion 4a from the stopper plate 14 serving also as the first connecting member attached to the first hinge shaft 10 and the second hinge shaft 12. What is shown in the figure is an attachment shaft 7 for attaching the hinge case 6 to the biaxial hinge 4. The mounting shaft 7 has one end 7a and the other end 7b, and a large-diameter portion 7c is provided at the center.

Further, as shown in FIGS. 2, 3, and 14 , the hinge case 6 is a cylindrical one having 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. The first friction torque generating means 26 a on the first hinge shaft 10 side of the biaxial hinge 4, the first insertion hole 6 c through which the first suction means 31 a is inserted, and the second hinge shaft 12 The second friction torque generating means 26b on the side and the second insertion hole 6d for inserting the second suction means 31b are provided, and the stopper means 9 and the selective rotation restricting means 16 are provided on one side of the mounting portion 6b. The friction torque generating means 26 and the suction means 31 are accommodated on the other side.

  The mounting shaft 7 in the embodiment is inserted into the mounting hole 27c provided in the third connecting member 27 at one end 7a side, and the insertion hole provided in the fourth connecting member 30 with the large diameter portion 7c. 30g, and the other end portion 7b side is attached to the attachment hole 6a provided in the attachment portion 6b of the hinge case 6 by caulking the exposed end after insertion, but is not limited to this. It may be by a method.

  The hinge case 6 is housed in the housing recesses 2b and 3b provided in the first housing 2 and the second housing 3 as shown in FIG. The hinge case 8 of the other biaxial hinge 5 has the same configuration.

  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 in a parallel state by a stopper plate 14, which also serves as a first connecting member, a second connecting member 15, a third connecting member 27, and a fourth connecting member 30, and are rotatably provided. There is no limitation on the number of connecting members. When the first housing 2 and the second housing 3 are relatively opened and closed, the selective rotation restricting means 16 is connected to the first hinge shaft 10 and the second hinge in a predetermined order as shown in FIGS. The hinge shaft 12 is rotated so that the first housing 2 and the second housing 3 can be rotated by 180 degrees in total, and can be opened and closed over a relative range of 0 to 360 degrees. In the point. However, the opening / closing order is not limited to that of the following embodiment.

  That is, first, the case where the first housing 2 and the second housing 3 such as the notebook computer 1 are opened from the closed state when the opening / closing angle is 0 degrees will be described based on the selective rotation restricting means 16 and the stopper means 9. To do. When the first housing 2 and the second housing 3 in the closed state shown in FIGS. 17A and 17B are closed, as shown in FIG. 17A, the selective rotation restriction attached to the first hinge shaft 10. The outer periphery of the first lock cam portion 19 of the first lock / release member 21 of the means 16 is in contact with the first convex portion 17 a of the first lock portion 17 c of the first slide plate 17. The second convex portion 17b of the first lock portion 17c of the first slide plate 17 is lowered into the first concave portion 20a of the second lock cam portion 20 of the second lock / release member 23 of the attached selective rotation restricting means 16. And as shown in (b), the 3rd convex part 22a provided in the 2nd lock part 22c of the 2nd slide plate 22 of the selective rotation control means 16 is the 2nd curved recessed part 24a of the 3rd lock cam part 24. Even if the fourth protrusion 22b of the second lock portion 22c of the second slide plate 22 is in contact with the outer periphery of the fourth lock cam portion 25 as shown in FIG. 2 Since the first recess 20a of the second lock cam portion 20 of the lock / release member 23 falls into the second protrusion 17b of the first slide plate 17, the counterclockwise rotation of the second hinge shaft 12 is restricted. ing. Therefore, since only the clockwise rotation of the first hinge shaft 10 is allowed, the first housing 2 is rotated clockwise with respect to the second housing 3 and is opened up to 90 degrees. Further, it can be rotated counterclockwise to return to the closed state at the original position. The state in which the first casing 2 is rotated clockwise from the 0 degree with respect to the second casing 3 is shown in FIGS. 18 (a) and 18 (b).

  Next, when the first housing 2 is rotated clockwise with respect to the second housing 3 and opened to 90 degrees, as shown in FIG. Since the first lock / release member 21 and the second lock / release member 23 allow the first slide plate 17 to slide in any direction, either the first hinge shaft 10 or the second hinge shaft 12 can be used. However, as shown in (b), the third convex portion 22a of the second lock portion 22c of the second slide plate 22 is the second curved concave portion 24a of the third lock cam portion 24. Since the fourth convex portion 22b is in contact with the outer periphery of the fourth lock cam portion 25, the clockwise rotation of the first hinge shaft 10 is restricted this time, and the second hinge shaft 12 is Counterclockwise of the opening direction of the housing 3 Rotation of rotating is to be allowed. As a result, the second housing 3 is rotated counterclockwise and opened with respect to the first housing 2. The state in which the second housing 3 is rotated counterclockwise from the 90 ° and opened is shown in FIGS. 20 (a) and 20 (b).

  Next, the state in which the second casing 3 is rotated 90 degrees counterclockwise with respect to the first casing 2 and opened to a total of 180 degrees is shown in FIGS. 21 (a) and 21 (b). . According to the drawing, in the opened state of 180 degrees, the first housing 2 and the second housing 3 are in a flat plate-like unfolded state with no step. And as shown to (a), the 1st convex part 17a of the 1st lock part 17c provided in the 1st slide plate 17 of the selective rotation control means 16 is the 1st lock cam of the 1st lock | rock / release member 21 The second convex portion 17 b is in contact with the outer periphery of the second lock cam portion 20 of the second lock / release member 23. On the other hand, as shown in (b), the third convex portion 22a of the second lock portion 22c of the second slide plate 22 falls and engages with the terminal end portion of the second curved concave portion 24a of the third lock cam portion 24. The fourth convex portion 22 b is in contact with the outer periphery of the fourth lock cam portion 25. Therefore, the rotation of the first hinge shaft 10 is restricted in both the clockwise direction and the counterclockwise direction, while the second hinge shaft 12 is allowed to rotate in both the clockwise direction and the counterclockwise direction. Therefore, the second casing 3 can be further rotated counterclockwise with respect to the first casing 2 and further opened. Further, the second housing 3 can be rotated in the clockwise direction by rotating it in the clockwise direction. The state in which the second housing 3 is further opened from 180 degrees with respect to the first housing 2 is shown in FIGS. 22 (a) and 22 (b).

  Next, the state in which the second housing 3 is rotated counterclockwise and opened to 270 degrees with respect to the first housing 2 is shown in FIGS. 23 (a) and 23 (b). In this state, as shown in (a), in the first curved recess 19a of the first lock cam portion 19 of the first lock / release member 21 attached to the first hinge shaft 10 of the selective rotation restricting means 16, The outer periphery of the second lock cam portion 20 of the second lock / release member 23 attached to the second hinge shaft 12 is lowered to the first convex portion 17a of the first lock portion 17c of the first slide plate 17. Since it is in contact with 17b, clockwise rotation of the first hinge shaft 10 and clockwise and counterclockwise rotation of the second hinge shaft 12 are allowed. Furthermore, as shown in (b), the second curved recess 24a of the third lock cam portion 24 of the first lock / release member 21 attached to the first hinge shaft 10 of the selective rotation restricting means 16 has a second The third convex portion 22a of the slide plate 22 is depressed, the second concave portion 25a of the fourth lock cam portion 25 of the second lock / release member 23 attached to the second hinge shaft 12, and the fourth convex portion of the second slide plate 22. There is a gap between the portion 22b. Therefore, in the opened state of 270 degrees, the first hinge shaft 10 can rotate clockwise. Further, the second hinge shaft 12 can be rotated in either the clockwise direction or the counterclockwise direction. However, as shown in FIG. 16A, the second stopper means 9b of the stopper means 9 is provided. Since the second protrusion 12h provided on the second hinge shaft 12 is in contact with the second stopper piece 14d of the stopper plate (first connecting member) 14, the second hinge shaft 12 is further counterclockwise. Since the rotation is restricted, the second casing 3 can be rotated in the clockwise closing direction, but the rotation is restricted in the counterclockwise opening direction. Therefore, since only the first hinge shaft 10 can be rotated clockwise in order to further open the first housing 2 and the second housing 3, this time, the first hinge shaft 10 is rotated clockwise. The first housing 2 can be further opened in the opening direction with respect to the second housing 3. The state in which the first housing 2 is further opened from 270 degrees with respect to the second housing 3 is shown in FIGS.

Next, the state in which the first housing 2 is rotated clockwise and opened to 360 degrees with respect to the second housing 3 is shown in FIGS. 25 (a) and 25 (b). Also, just before reaching this state, the first A curved cam convex portion 32b and the first B curved cam convex portion 32c provided on the first cam follower 32 of the first suction means 31a of the suction means 31 are the first A curved cam concave portion. The first housing 2 is automatically opened to 360 degrees with respect to the second housing 3 because the first housing 2 falls into the 30c and the first B curved cam recess 30d. The operation of the first suction means 31a may be configured to operate when the first housing 2 is closed from 90 degrees to 0 degrees. Moreover, both may be sufficient. The suction means 31 allows the first case 2 and the second case 2 to be naturally provided without providing a latch means between the cases 2 and 3 in the closed state of the first case 2 and the second case 3. The closed state can be maintained without the housing 3 being opened. Further, in terms of preventing this natural opening, the suction means 31 of the embodiment is from 0 degrees to 90 degrees and 270 degrees when the first casing 2 and the second casing 3 are opened and closed. Since only the first hinge shaft 10 rotates during the opening / closing operation between 360 degrees, the suction means 31 may be provided only on the first hinge shaft 10 side.

  Further, in this state, that is, in a state where the first housing 2 is opened to 360 degrees with respect to the second housing 3, the first housing 2 and the second housing 3 are shown in FIGS. As shown in b), they overlap each other in the opposite direction to that in the closed state. In this state, as shown in FIG. 16B, the first hinge shaft 10 has the first stopper piece 14 c of the first connecting member (stopper plate) 14 of the first stopper means 9 a of the stopper means 9. Since it is in contact with the first protrusion 10h, further rotation of the first hinge shaft 10 in the clockwise direction is restricted.

  Further, in this state, as shown in FIG. 25A, the first curve of the first lock cam portion 19 of the first lock / release member 21 attached to the first hinge shaft 10 of the selective rotation restricting means 16 is provided. The concave portion 19a is depressed and engaged with the first convex portion 17a of the first lock portion 17c of the first slide plate 17, and the second lock cam portion of the second lock / release member 23 attached to the second hinge shaft 12. The outer periphery of 20 is in contact with the second convex portion 17b. Then, as shown in FIG. 25B, the second slide is provided on the outer periphery of the third lock cam portion 24 of the first lock / release member 21 attached to the first hinge shaft 10 of the selective rotation restricting means 16. Since the third convex portion 22a of the plate 22 is in contact with the second concave portion 25a of the fourth lock cam portion 25 attached to the second hinge shaft 12, the fourth convex portion 22b falls into the second concave portion 25a. Counterclockwise rotation is allowed, and only the closing direction of the first housing 2 can be rotated counterclockwise.

  As described above, the opening operation of the first casing 2 and the second casing 3 from the closed state of 0 degrees overlapping each other is first performed in the clockwise direction with respect to the second casing 3. Until the second housing 3 is rotated counterclockwise until the second housing 3 reaches 270 degrees with respect to the first housing 2, and from the 270 degrees, the first housing 2 is moved to the second position. The case 3 is opened by rotating clockwise with respect to the housing 3, and is opened 360 degrees in total.

  Next, from the state of 360 degrees where the first housing 2 and the second housing 3 are opened and overlapped with each other, the first housing 2 is counterclockwise with respect to the second housing 3 as described above. When rotated and closed, and rotated 90 degrees, as shown in FIG. 23 (a), the rotation of the first hinge shaft 10 in the counterclockwise direction is restricted by the selective rotation restricting means 16, and the stopper means 9 and Since the rotation of the second hinge shaft 12 in the clockwise direction is allowed by the selective rotation restricting means 16, the second housing 3 can be rotated and closed with respect to the first housing 2 in the clockwise direction. Become.

  FIGS. 21A and 21B show a state in which the second housing 3 is rotated 90 degrees clockwise to a total of 180 degrees. In this state, as shown in (a), the counterclockwise rotation of the first hinge shaft 10 is regulated by the selective rotation regulating means 16, but as shown in (a) and (b). Since further clockwise rotation of the second hinge shaft 12 is permitted, the second housing 3 can be further rotated clockwise with respect to the first housing 2 and closed.

  The state in which the second housing 3 is further closed by 90 degrees with respect to the first housing 2 is shown in FIGS. 19 (a) and 19 (b). According to FIG. 19, the second hinge shaft 12 seems to be able to further rotate in the clockwise direction, but the stopper means 9 is restricted from further rotating and closing in the clockwise direction. On the other hand, since the first hinge shaft 10 is allowed to rotate counterclockwise by the selective rotation restricting means 16, the first casing 2 is rotated counterclockwise with respect to the second casing 3 and closed. The first housing 2 overlaps the second housing 3 as shown in FIGS. 17A and 17B, and the closing operation is completed. The housing 3 returns to the original position.

  As described above in detail, the opening / closing operation of the first housing 2 and the second housing 3 is performed in a predetermined order by the selective rotation control means 16 and the stopper means 9.

  During the relative opening / closing operation of the first casing 2 and the second casing 3 described above, the first friction torque generating means 26 a and the second friction torque generating means 26 b of the friction torque generating means 26 are connected to the first hinge shaft 10. The second hinge shaft 12 operates at the time of alternating rotation, and the first friction washer 28 and the second friction washer 29, the first friction part 27d and the second friction part 27e of the third connection member 27, and the fourth connection member. It is possible to generate a friction torque between the 30th third friction part 30h and the fourth friction part 30i to perform a stable stop action at an arbitrary angle during the opening / closing operation of the first housing 2 and the second housing 3. It can be done.

  Further, as described above and as shown in FIGS. 16 (a) and 16 (b), the stopper means 9 is the first stopper means 9a when the first hinge shaft 10 is rotated 180 degrees in total. The first protrusion 10h abuts on the first stopper piece 14c provided on the stopper plate 14 which also serves as the first connecting member, thereby restricting further rotation. Further, in the second stopper means 9b, when the second hinge shaft 12 is rotated by 180 degrees in total, the second protrusion 12h contacts the second stopper piece 14d provided on the first connecting member (stopper plate) 14. By touching, further rotation is restricted.

  Further, the suction means 31 operates when the second suction means 31b is opened from 90 degrees to 270 degrees of the second housing 3, and the second cam follower 33 of the second cam follower 33 is started slightly before the opening / closing angle of 270 degrees. The second A curved cam convex portion 33b and the second B curved cam convex portion 33c fall into the second A curved cam concave portion 30e and the second B curved cam concave portion 30f of the fourth connecting member 30, thereby exhibiting a suction function. Is automatically urged to rotate in the opening direction with respect to the first housing 2. The suction function of the second suction means 31 b also functions when the second housing 3 is closed from 270 degrees to 90 degrees with respect to the first housing 2.

  The first suction means 31a of the suction means 31 operates when the first housing 2 is opened from 270 degrees to 360 degrees, and the first cam follower 32 of the first cam follower 32 starts slightly before 360 degrees. When the portion 32b and the first B curved cam convex portion 32c fall into the first A curved cam concave portion 30c and the first B curved cam concave portion 30d of the fourth connecting member 30, a suction function is exhibited, and the first housing 2 is moved to the second housing. The body 3 is automatically urged to rotate in the opening direction. The suction function of the first suction means 31 a also functions when the first housing 2 is closed from 90 degrees to 0 degrees with respect to the second housing 3.

  Therefore, as is clear from the above description, the biaxial hinge 4 according to the present invention is configured such that the first housing 2 and the second housing 3 are connected to each other through the first hinge shaft 10 and the second hinge shaft 12 respectively. Although the opening and closing operations in total 360 degrees are possible by rotating 180 degrees in order, the opening and closing order is not particularly limited.

Then, after the notebook computer 1 can be used in its original way, the first housing 2 is bent with respect to the second housing 3 via the biaxial hinge 4 so as to be substantially L-shaped. It can be used in a notebook computer specification by making it into a mountain shape, or it can be used in a tablet specification by making it flat or superimposing it in a horizontal state, or using it in various ways It is possible.

  As another embodiment, the first and second disc springs 35 and 36 used for the elastic means 34 are made of a synthetic resin including a spring washer, a compression coil spring, and rubber having elasticity. It can be replaced with something. In addition, the hinge cases 6 and 8 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 8 are present, the biaxial hinges 4 and 5 are attached to the notebook computer 1. In this case, since the stopper means 9, the selective rotation restricting means 16, the friction torque generating means 26, 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 according to a predetermined order, particularly in a terminal device such as a notebook personal computer or the like, and relatively 360 degrees. Although it can be suitably used as a biaxial hinge when opening and closing within the range of, it is particularly suitable for use in 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 hinge 6 Hinge case 6b Mounting part 7 Mounting shaft 7a One end part 7b Other end part 8 Hinge case 9 Stopper means 9a 1st stopper Means 9b Second stopper means 10 First hinge shaft 10h First protrusion 12 Second hinge shaft 12h Second protrusion 14 First connecting member (stopper plate)
14a 1A bearing hole 14b 1B bearing hole 14c 1st stopper piece 14d 2nd stopper piece 16 Selective rotation restricting means 17 1st slide plate 17a 1st convex part 17b 2nd convex part 17c 1st lock part 19 1st lock cam Part 19a First curved concave part 20 Second lock cam part 20a First concave part 21 First lock / release member 22 Second slide plate 22a Third convex part 22b Fourth convex part 22c Second lock part 23 Second lock / release member 24 3rd lock cam part 24a 2nd curved recessed part 25 4th lock cam part 25a 2nd recessed part 26 Friction torque generating means 26a 1st friction torque generating means 26b 2nd friction torque generating means 27 3rd connection member 27a 3A bearing hole 27b 3B Bearing hole 27d First friction part 27e Second friction 28 first friction washer 29 second friction washer 30 fourth coupling member 30a 4A bearing hole 30b 4B bearing hole 30c 1A curved cam recess 30d 1B curved cam recess 30e 2A curved cam recess 30f 2B curved cam Concave portion 30h Third friction portion 30i Fourth friction portion 31 Suction means 31a First suction means 31b Second suction means 32 First cam follower 32b First A curved cam convex portion 32c First B curved cam convex portion 33 Second cam follower 33b First 2A curved cam convex portion 33c 2B curved cam convex portion 34a first elastic means 34b second elastic means

Claims (8)

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. A hinge shaft is connected in parallel with a plurality of connecting members and is rotatably provided to each other, and the first hinge shaft and the second hinge shaft are selectively provided between the first hinge shaft and the second hinge shaft. The selective rotation restricting means for rotating the first lock portion is provided with a first lock portion projecting from one side portion, and the first lock portion interposed between the first lock portion and the first lock portion. A first slide plate that is rotatably inserted in the hinge shaft and the second hinge shaft and is movable in the radial direction of the first hinge shaft and the second hinge shaft, and the first slide plate. A second lock portion is provided on the side opposite to the first lock portion and provided opposite to the first lock portion, and the first hinge shaft and the second hinge shaft can be rotated on the upper and lower portions of the second lock portion. A second slide plate provided so as to be movable in a radial direction of the first hinge shaft and the second hinge shaft after being inserted, and the first lock portion between the first slide plate and the second slide plate When the positioned below the second locking portion first Rutotomoni provided is constrained to rotate in the hinge shaft, the first locking cam portion and the third contacting individually the said second locking portion and the first locking portion It has a lock cam portion, selecting the first sliding plate and the second sliding plate through the third locking cam portion and the first locking cam portion by the rotation angle of the first hinge shaft To a first lock releasing member by a vertically movable restricting rotation allowable angle of the first hinge shaft, said first locking portion and the second locking between the first sliding plate and the second sliding plate wherein located above the parts second Rutotomoni provided is constrained to rotate in the hinge shaft, it has a second locking cam portion and the fourth lock cam portion contacting individually the said second locking portion and the first locking portion and, wherein the second hinge through the fourth locking cam portion and the second locking cam portion by rotation angle of the shaft, the first sliding plate and the second hinge by selectively movable up and down the second slide plate And a second lock / release member that regulates the allowable rotation angle of the shaft, and the first hinge shaft and the second hinge shaft are arranged in order by the selective rotation restricting means. The first housing and the second housing can be opened and closed between 0 degrees in the closed state and 360 degrees in the fully opened state. Characteristic biaxial hinge.   The first lock / release member includes a first lock cam portion having a first curved concave portion on a side facing the first convex portion of the first lock portion of the first slide plate, and a second of the second slide plate. A third lock cam portion having a second curved concave portion is provided integrally on the side of the lock portion facing the third convex portion, and the second lock / release member is provided with a first lock portion of the first slide portion of the first slide plate. A second lock cam portion having a first concave portion on the side facing the two convex portions, and a fourth lock cam portion having a second concave portion on the side facing the fourth convex portion of the second lock portion of the second slide plate. The biaxial hinge according to claim 1, wherein the hinge is provided integrally.   The biaxial hinge has stopper means including first stopper means and second stopper means, and the first stopper means is provided at a lower portion of a stopper plate that also serves as a first connecting member. The first A bearing hole through which the shaft is rotatably inserted, the first stopper piece provided outside the first A bearing hole, and the rotation angle provided on the first hinge shaft side make the first 1st protrusion part contact | abutted to 1 stopper piece, and the said 2nd stopper means inserted the said 2nd hinge shaft provided in the upper part of the stopper plate which also serves as a 1st connection member rotatably. The first B bearing hole, the second stopper piece provided outside the first B bearing hole, and the rotation provided on the second hinge shaft side Characterized by being constituted by the second protruding portion abutting on said second stopper piece by degrees, two-axis hinge of claim 1.   The biaxial hinge includes friction torque generating means including first friction torque generating means and second friction torque generating means, and the first friction torque generating means is disposed at the lower portion of the third connecting member. A first friction part provided around one side of the 3A bearing hole through which the shaft is rotatably inserted, and the first hinge shaft in contact with the first friction part, the rotation being restricted by the first hinge shaft. A first friction washer, and a second friction portion provided around one side of the 4A bearing hole where the first hinge shaft is rotatably inserted in the lower portion of the fourth connecting member. And the second friction torque generating means is inserted in the upper portion of the third connecting member so that the second hinge shaft can rotate. A third friction portion provided around one side of the third B bearing hole, and a second friction washer provided in contact with the third friction portion and restricted in rotation by the second hinge shaft. And a fourth friction part provided around one side of the fourth B bearing hole where the second hinge shaft is rotatably inserted in the upper part of the fourth connecting member. The biaxial hinge according to claim 1, characterized in that   The biaxial hinge has suction means composed of first suction means and second suction means, and the first suction means is a fourth connecting member provided by rotatably inserting the first hinge shaft. A first A curved cam recess and a first B curved cam recess provided around the other side of the 4A bearing hole, and a rotation restricted by the first hinge shaft, and the first A curved cam recess and the first A A first cam follower having a first A curved cam convex portion and a first B curved cam convex portion on a side facing the 1B curved cam concave portion, the first A curved cam concave portion, the first B curved cam concave portion, and the first A curved cam convex portion; And a first elastic means that press-contacts the first B curved cam convex portion, and the second suction means is provided by inserting the second hinge shaft in a rotatable manner. 4B bearing hole The second A curved cam recess and the second B curved cam recess provided around the other side, and the rotation of the second hinge shaft are restricted and are opposed to the second A curved cam recess and the second B curved cam recess. A second cam follower having a second A curved cam convex portion and a second B curved cam convex portion on the side, the second A curved cam concave portion and the second B curved cam concave portion, and the second A curved cam convex portion and the second B curved cam convex portion. 2. The biaxial hinge according to claim 1, wherein the second elastic means is in pressure contact with the second elastic means. The biaxial hinge has a hinge case that covers the stopper body that also serves as the first connecting member on the main body portion, and the hinge case has a mounting portion provided in the hinge case attached to and detached from the main body portion via a mounting shaft. The biaxial hinge according to claim 3 , wherein the hinge is detachably attached.   The biaxial shaft according to claim 6, wherein one end of the attachment shaft is attached to a connecting member of the friction torque generating means of the main body portion, and the other end is attached to the attachment portion of the hinge case. Hinge.   A terminal device using the biaxial hinge according to claim 1.

Images