JP2015064105A5 - - Google Patents

Description

Biaxial hinge and terminal device using the biaxial hinge

The present invention relates to a biaxial hinge suitable for use in terminal devices such as notebook computers, mobile personal computers, and PDAs, and a terminal device using the biaxial hinge .

  In a terminal device such as a notebook personal computer, a mobile personal computer, or a PDA having a first housing provided with a keyboard portion and a second housing provided with a display portion, the first housing and the second housing are provided. After opening the first housing and the second housing 90 degrees in the vertical direction, and then opening the first housing in the horizontal direction, the first housing is connected to the first housing. There are two-axis hinges composed of two axes for enabling rotation with respect to the housing. The biaxial hinge according to the present invention relates to a biaxial hinge configured such that even the biaxial hinge can open the first casing and the second casing in the vertical direction by 180 degrees in total 360 degrees.

Conventionally, a biaxial hinge having such a configuration and a terminal device using the biaxial hinge are described in Patent Document 1 below. In the biaxial hinge described in Patent Document 1, a shaft attached to a first member (housing) and a shaft attached to a second member (housing) are connected by a connecting arm and friction is applied to each shaft. Torque generating means is provided, and a link arm is further provided. However, the first member and the second member are not configured to be able to open 180 degrees or more, and the first housing and the first member are not provided. The two casings 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 be able to be used as a tablet at the same time as being able to be used as, for example, a notebook personal computer, the first casing and the second casing constituting the terminal device are connected to each other at 0 degree via a hinge. The opening / closing operation of the other casing can be restricted during the opening / closing operation of one casing from the closed state to 360 degrees, and the order of the opening / closing operations is either the first casing or the second casing. Therefore, there is a demand for a hinge that can be opened and closed with a predetermined regularity.

Therefore, an object of the present invention is to open and close the first casing and the second casing of a terminal device such as a notebook computer with regularity from 0 degrees to at least 180 degrees or more, preferably 360 degrees, and any It is an object of the present invention to provide a biaxial hinge that can be opened and closed in a stable stop state at an open / close angle and a terminal device using the biaxial hinge .

  In order to achieve the above-described object, the biaxial hinge according to claim 1 includes a first hinge shaft attached to the first housing side and a second hinge shaft attached to the second housing side as a connecting member. Selective rotation restricting means for rotating the first hinge shaft and the second hinge shaft alternately is provided between the first hinge shaft and the second hinge shaft. The selective rotation restricting means includes a slide member that rotatably inserts the first hinge shift and the second hinge shaft, and the first hinge shift that is provided so as to face the slide member. A connecting member that rotatably inserts the second hinge shaft together, and the first hinge shift and the second between the connecting member and the slide member. A first lock cam member and a second lock cam member provided to be rotatable together with the first hinge shift and the second hinge shaft, the rotation of the first lock cam member and the second lock cam member being restricted. It is provided with a lock member that is slidably provided between the first lock cam member and the second lock cam member and locks the rotation of either one of the first lock cam member and the second lock cam member.

  Next, in the biaxial hinge according to claim 2, the first hinge shaft attached to the first housing side and the second hinge shaft attached to the second housing side are connected in a parallel state by a connecting member. Selective rotation restriction means is provided that is provided so as to be rotatable relative to each other, and that alternately rotates the first hinge shaft and the second hinge shaft between the first hinge shaft and the second hinge shaft. The first hinge shift and the second hinge shaft are provided in the same manner as described above, and a slide member in which both the first hinge shift and the second hinge shaft are rotatably inserted, and the slide member is provided facing the slide member. A connecting member that is rotatably inserted together, and each of the first hinge shift and the second hinge shaft between the connecting member and the slide member. Slidable between the first lock cam member and the second lock cam member, and the first lock cam member and the second lock cam member that are constrained to rotate and rotatably provided together with the first hinge shift and the second hinge shaft. The first casing and the first lock cam member, and when the rotation of either one of the first lock cam member and the second lock cam member is allowed, When both of the second casings are in the closed state, rotation of either the first hinge shaft or the second hinge shaft is permitted, and the first casing and the second casing are relatively relative to each other. When one of the first hinge shaft and the second hinge shaft is allowed to rotate, the other rotation is restricted. By, wherein the second housing and the first housing is form so as to be opened and closed in the vertical direction over 360 degrees in total.

  Next, in the biaxial hinge according to claim 3, the first hinge shaft attached to the first housing side and the second hinge shaft attached to the second housing side are connected in a parallel state by a connecting member. Selective rotation restriction means is provided that is provided so as to be rotatable relative to each other, and that alternately rotates the first hinge shaft and the second hinge shaft between the first hinge shaft and the second hinge shaft. The first hinge shift and the second hinge shaft are provided in the same manner as described above, and a slide member in which both the first hinge shift and the second hinge shaft are rotatably inserted, and the slide member is provided facing the slide member. A connecting member that is rotatably inserted together, and each of the first hinge shift and the second hinge shaft between the connecting member and the slide member. The first lock cam member and the second lock cam member which are constrained to rotate and are rotatably provided together with the first hinge shift and the second hinge shaft, and slide between the first lock cam member and the second lock cam member. And a lock member that locks the rotation of one of the first lock cam member and the second lock cam member when the rotation of either one of the first lock cam member and the second lock cam member is allowed. Friction torque generating means for generating friction torque when each of the second hinge shafts is rotated; suction means for performing a suction function when the first hinge shaft and the second hinge shaft are rotated at a predetermined angle; and A shaft that regulates the rotation angle of the first hinge shaft and the second hinge shaft. Wherein the wrapper means and the respectively provided.

  In that case, the biaxial hinge according to claim 4 is configured such that the selective rotation restricting means is arranged between the first hinge shaft and the second hinge shaft in the vertical direction between the connecting member and the slide guide member. A lock member having first and second cam projections on the upper and lower portions provided so as to be slidable, and the first hinge shaft and the second hinge shaft are inserted and engaged with each other with the lock member interposed therebetween. It is characterized by comprising a first lock cam member and a second lock cam member having a first cam recess and a second cam recess, respectively.

  The biaxial hinge according to claim 5 is characterized in that the friction torque generating means further includes the first hinge shaft between the selective rotation restricting means, the first hinge shaft, and each flange portion of the second hinge shaft. And a first hinge friction washer provided on both sides of the friction plate with the first hinge shaft and the second hinge shaft being constrained to rotate. And a lower first B friction washer, an upper second A friction washer, and a lower second B friction washer.

  The biaxial hinge according to claim 6 further includes the suction means, the first hinge shaft and the second hinge shaft, respectively, a first A curved cam concave portion, a first B curved cam concave portion, a second A curved cam concave portion and a second B curved shape. Provided in a pair of upper and lower first cam followers and second cam followers that are axially movable to the first hinge shaft and the second hinge shaft while being opposed to the cam recesses, respectively, but provided with restricted rotation. The first A curved cam convex portion, the first B curved cam convex portion, the second A curved cam convex portion and the second B curved cam convex portion, the first elastic shaft and the second hinge shaft provided on the first hinge shaft and the second hinge shaft, respectively. It is characterized by comprising 2 elastic means.

  In the biaxial hinge according to claim 7, the stopper means is provided on the first and second stopper pieces provided on the outer circumferences of the first lock cam member and the second lock cam member, and on the slide guide member. It is characterized by comprising a first stopper part and a second stopper part.

  And the terminal device which concerns on Claim 8 uses the biaxial hinge of each description as described above, It is characterized by the above-mentioned.

  Since the present invention is configured as described above, according to the first aspect of the present invention, when the first casing and the second casing are both closed by the selective rotation restricting means, both are fully opened. Sometimes it is possible to open and close either the first housing or the second housing with the first hinge shaft and the second hinge shaft attached thereto, respectively. When either one of the opening / closing operations is performed, the rotation of one of the first hinge shaft and the second hinge shaft is restricted, and the opening / closing operation of the other of the first housing and the second housing is restricted. The In this way, the first housing and the second housing can be opened and closed in total 360 degrees.

  According to a second aspect of the present invention, when the first casing and the second casing are both closed by the selective rotation restricting means, only the opening / closing operation of the second casing can be performed. Only when the second casing is opened to a predetermined angle, the first casing can be rotated (open / closed). During the second opening / closing operation, the first casing is opened / closed. It is regulated.

  According to a third aspect of the present invention, when the rotation of either the first hinge shaft or the second hinge shaft is selectively allowed by the selective rotation restricting means, the rotating first hinge shaft and the second hinge shaft rotate. The rotational torque is controlled by friction torque generating means provided on both of the hinge shafts, and the opening and closing operations of the first casing and the second casing can be freely stopped and held at an arbitrary opening / closing angle. In addition, the suction means automatically closes from a predetermined opening / closing angle. Then, the opening / closing angle of the first housing and the second housing is regulated to a predetermined opening / closing angle by the stopper means.

  According to a fourth aspect of the present invention, the upper rotation shaft is attached to the first hinge shaft and the second hinge shaft, each of which is provided with a cam recess in the outer peripheral portion thereof, the rotation being constrained to each other. A first casing is provided by a lock member having a first cam convex portion and a second cam convex portion on an upper portion and a lower portion provided between the first lock cam member and the lower second lock cam member so as to be slidable in the vertical direction. When the first and second housings are both closed and fully opened, the first and second cam protrusions of the lock member are respectively the first cams of the first lock cam member and the second lock cam member. Since the concave portion and the second cam concave portion are opposed to each other, it is possible to open and close either the first casing or the second casing to which the first hinge shaft and the second hinge shaft are respectively attached. The second When one of the first housing and the second housing is opened and closed, one of the first and second cam projections of the lock member is the first lock cam member and the second lock cam member, respectively. The first cam concave portion and the second cam concave portion of the lock member 21 are opposed to each other, and the other one of the first cam convex portion and the second cam convex portion of the lock member 21 is opposed to the outer peripheral portion of the lock member. Therefore, the rotation of one of the first hinge shaft and the second hinge shaft is restricted, and the opening / closing operation of the other of the first housing and the second housing is restricted.

  Further, according to the fifth aspect, since the friction torque is generated by the friction torque generating means when the first hinge shaft and the second hinge shaft are rotated, each of the first casing and the second casing is provided. At the time of opening / closing operation, it can be stably stopped and held at an arbitrary opening / closing angle.

  According to the sixth aspect of the present invention, the suction means closes the first hinge shaft and the second hinge shaft, regardless of which of the first hinge shaft and the second hinge shaft rotates with the opening / closing operation of the first housing and the second housing. The first A curved cam concave portion, the first B curved cam concave portion, the second A curved cam concave portion, and the second B curved cam concave portion are elastically moved together with the first hinge shaft and the second hinge shaft in the formed position and the opened position. Since the first B curved cam convex portion, the second A curved cam convex portion, and the second B curved cam convex portion fall, immediately before and when the first casing and the second casing are fully opened and fully closed. The first housing and the second housing are closed so as to be sucked, and are stably stopped and held at the open position and the closed position.

  According to the seventh aspect, the opening and closing angles of the first casing and the second casing are regulated to predetermined angles by the stopper means.

  And if comprised like Claim 8, the 1st housing | casing and the 2nd housing | casing can provide the terminal device which can open and close a maximum of 360 degree | times in total 180 degree | times.

1 shows a terminal device , such as a notebook computer, to which a biaxial hinge according to the present invention is attached, in which (a) is a perspective view of a state in which a second housing is opened with respect to the first housing as viewed 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 explanatory drawing explaining the state which attached the biaxial hinge which concerns on this invention to terminal devices like a notebook computer. It is the perspective view which accommodated the biaxial hinge which concerns on this invention in the hinge case in the state which rotated the 1st housing | casing and 2nd housing | casing of the notebook personal computer in the opposite direction 180 degree | times, respectively. FIG. 4 is a perspective view of the biaxial hinge in a state in which the biaxial hinge according to the present invention is taken out from the hinge case and the first housing and the second housing are closed from each other when viewed from a direction different from FIG. 3. It is the perspective view of the state which rotated the 1st hinge shaft of the biaxial hinge which concerns on this invention 180 degree | times from the state of FIG. FIG. 5 is a perspective view of a state in which the first hinge shaft and the second hinge shaft of the biaxial hinge according to the present invention are rotated 180 degrees in the opposite directions from the state of FIG. 4. It is the disassembled perspective view which decomposed | disassembled and looked at the biaxial hinge which concerns on this invention in the state shown in FIG. FIG. 5 is a longitudinal sectional view of the biaxial hinge according to the present invention divided by the selective rotation restricting means in the state shown in FIG. 4. FIG. 6 is a longitudinal sectional view of the biaxial hinge according to the present invention divided by the selective rotation restricting means in the state shown in FIG. 5. FIG. 7 is a longitudinal sectional view of the biaxial hinge according to the present invention divided by the selective rotation restricting means in the state shown in FIG. 6. 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). The connection member of the biaxial hinge which concerns on this invention is shown, (a) is the one side view, (b) is the perspective view. The slide guide member of the biaxial hinge which concerns on this invention is shown, (a) is the one side view, (b) is the perspective view. The locking member of the biaxial hinge which concerns on this invention is shown, (a) is the one side view, (b) is the perspective view. The 1st lock cam member of the upper side of the biaxial hinge concerning the present invention is shown, (a) is the side view, and (b) is the perspective view. The 2nd lock cam member of the lower side of the biaxial hinge concerning the present invention is shown, (a) is the side view, and (b) is the perspective view. It is a perspective view which shows the friction plate of the biaxial hinge which concerns on this invention. The 1st cam follower above the biaxial hinge which concerns on this invention is shown, (a) is the side view, (b) is the perspective view. The 2nd cam follower of the lower side of the biaxial hinge concerning this invention is shown, (a) is the side view, (b) is the perspective view. It is a longitudinal cross-sectional view for demonstrating operation | movement of the other Example of the selective rotation control means of the biaxial hinge which concerns on this invention. It is a longitudinal cross-sectional view for demonstrating operation | movement of the selective rotation control means shown in FIG. 20 of the biaxial hinge which concerns on this invention. It is a longitudinal cross-sectional view for demonstrating operation | movement of the selective rotation control means shown in FIG. 20 of the biaxial hinge which concerns on this invention.

In the following, an embodiment in which the two-axis 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, the one using the two-axis hinge according to the present invention is limited to a notebook computer. It can also be used for mobile PCs, PDAs and other terminal devices having a first case and a second case 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. It is.

  1A and 1B show a notebook personal computer 1 as an example of a portable terminal using a biaxial hinge according to the present invention. The notebook computer 1 includes a first housing 2 provided with a keyboard portion 2a, and a pair of biaxial hinges 4 according to the present invention at left and right portions of each rear portion of the second housing 3 provided with a display portion 3a. 5 is connected so that opening and closing is possible.

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

  2 to 19 show an embodiment of the biaxial hinge 4. In the drawing, what is indicated by an instruction symbol 10 is a first hinge shaft, and this first hinge shaft 10 has a substantially trapezoidal cross section from one end side as shown in FIG. 10b, a mounting shaft portion 10a, a flange portion 10d having an engaging concave portion 10c on the outer periphery provided subsequent to the mounting shaft portion 10a, and a cross-sectional view provided subsequent to the flange portion 10d. A first deformation shaft portion 10e having an elliptical shape, and a second cross section having a substantially elliptical shape having a smaller diameter than the first deformation shaft portion 10e provided subsequent to the first deformation shaft portion 10e. A deformation shaft portion 10f.

  A first attachment plate 11 is attached to the attachment shaft portion 10a, and the attachment method of the first attachment plate 11 to the attachment shaft portion 10a is the same as the attachment holes 10b and 10b of the first hinge shaft 10 and the first attachment plate 10a. This is done by caulking the ends of the mounting pins 10g and 10g with flanges through the mounting holes 11a and 11a of the plate 11. Then, the first mounting plate 11 is connected to the second mounting holes 11b, 11b,... Through the mounting holes 11b, 11b,. It is the structure attached to the housing | casing 3.

  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 is particularly as shown in FIG. From one end thereof, a mounting shaft portion 12a having a substantially trapezoidal cross section and having mounting holes 12b and 12b, and a flange portion 12d having an engaging recess 12c on the outer periphery provided subsequently to the mounting shaft portion 12a. A first deformed shaft portion 12e having a substantially elliptical cross section provided subsequent to the flange portion 12d, and a first deformed shaft portion 12e provided subsequent to the first deformed shaft portion 12e. And a second deformation shaft portion 12f having a substantially elliptical cross section with a smaller diameter.

  A second attachment plate 13 is attached to the attachment shaft portion 12a. The attachment method of the second attachment plate 13 to the attachment shaft 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 12g, 12g with flanges through the mounting holes 13a, 13a of the plate 13. Then, the second mounting plate 13 uses the mounting screws 7, 7,... As shown in FIG. 2 through the mounting holes 13b, 13b,. It is the structure attached to the housing | casing 2. By attaching the first attachment plate 11 and the second attachment plate 13 to the first housing 2 and the second housing 3, the first hinge shaft 10 and the second hinge shaft 12 are perpendicular to the axial direction thereof. And arranged in parallel.

  What is indicated by an instruction symbol 14 is a hinge case, and in the hinge case 14, the portions ahead of the flange portions 10 d and 12 d of the first hinge shaft 10 and the second hinge shaft 12 are the mounting shaft portions 10 a and 12 a. It is accommodated leaving a part.

  As shown in FIGS. 3 and 11, the hinge case 14 has a cylindrical shape with an elongated cross-sectional shape, and will be described later, which is mounted on the first hinge shaft 10 and the second hinge shaft 12. The selective rotation restricting means 15, the friction torque generating means 16, the suction means 17 and the stopper means 19 are accommodated. In particular, as shown in FIG. 11, the partition wall 14 a provided with the female screw portion 14 b provided in the hinge case 14 is provided. The connecting member 20 of the selective rotation restricting means 15 is configured to be fixed at its central portion with a mounting screw 18 as shown in FIG. As shown in FIG. 2, the hinge case 14 is housed in housing recesses 2b and 3b provided in the first housing 2 and the second housing 3, respectively.

  Next, the selective rotation restricting means 15 will be described. The selective rotation restricting means 15 includes a connecting member 20, a lock member 21, a slide guide member 22, a pair of first lock cam members 23 and a second lock cam member 24. The connecting member 20 includes a first bearing portion 20a and a second bearing portion 20b that have upper and lower substantially disk shapes, and a connecting portion 20c that connects the first and second bearing portions 20a and 20b. The first bearing portion 20a and the second bearing portion 20b are provided with a first bearing hole 20k and a second bearing hole 20m, each having a circular cross section, and the first bearing hole 20k and the second bearing hole. The second deformed shaft portions 10f and 12f of the first hinge shaft 10 and the second hinge shaft 12 are inserted into 20m so as to be rotatably supported. The connecting portion 20c is provided with a protruding portion 20d provided with a female screw portion 20e. The protruding portion 20d is configured to be attached to the partition wall 14a of the hinge case 14 by the mounting screw 18 as described above. The connecting portion 20c is fitted into the engaging groove portion 21c of the lock member 21 provided with the first cam convex portion 21a and the second cam convex portion 21b on the upper side and the lower side, and the lock member 21 slides in the vertical direction. Operation is allowed.

  As with the connecting member 20, the slide guide member 22 includes a first bearing portion 22a and a second bearing portion 22b that are substantially disk-shaped at the upper and lower portions, and between the first bearing portion 22a and the second bearing portion 22b. The first bearing portion 22a and the second bearing portion 22b are provided with a first bearing hole 22d and a second bearing hole 22e, and the first bearing hole 22d and the second bearing portion 22d are connected to each other. The first deformation shaft portions 10e and 12e of the first hinge shaft 10 and the second hinge shaft 12 are inserted into the second bearing hole 22e and are rotatably supported. The connecting portion 22 c is fitted into the other engaging groove portion 21 d of the lock member 21 and allows the lock member 21 to slide in the vertical direction. The first bearing portion 22a and the second bearing portion 22b are provided with a first stopper portion 22f and a second stopper portion 22g by deleting the periphery of the first bearing hole 22d and the second bearing hole 22e.

  The upper and lower first lock cam members 23 and 24 are provided with deformation insertion holes 23a and 24a, respectively. The lock cam members are a pair of upper and lower lock cam members. When the first deformation shaft portions 10e and 12e of the first hinge shaft 10 and the second hinge shaft 12 are inserted and engaged, the first lock cam member 23 and the second lock cam member 24 are connected to the first hinge shaft 10 and the first hinge shaft 10, respectively. The two hinge shafts 12 are attached with their rotations restricted. The first lock cam member 23 and the second lock cam member 24 are provided with first cam recesses 23b and second cam recesses 24b that reach both axial ends on the outer periphery, respectively, and the slide guide member 22 side when assembled. The first stopper piece 23c and the second stopper piece 24c that are in contact with the first stopper portion 22f and the second stopper portion 22g provided on the slide guide member 22 are provided on the side located on the side of the slide guide member 22 according to the rotation angle. . The first lock cam member 23 and the second lock cam member 24 are sandwiched between the connecting member 20 and the slide guide member 22, and are positioned on the upper side and the lower side of the lock member 21, respectively. The first cam recess 23b and the second cam recess 24b are configured to be engaged with the first cam protrusion 21a and the second cam protrusion 21b of the lock member 21 so as to face each other depending on the rotation angle thereof.

  Next, the friction torque generating means will be described. The friction torque generating means 16 includes a first friction torque generating means 16a on the first hinge shaft 10 side and a second friction torque generating means 16b on the second hinge shaft 12 side, which will be described together here. The friction torque generating means 16 includes a first bearing hole 25a and a second bearing shaft 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 in the upper and lower portions. A friction plate 25 provided between the slide guide member 22 and the flange portions 10d and 12d having a bearing hole 25b, and engagement recesses 10c and 12c provided on the flange portions 10d and 12d on the outer periphery. The first deformed shaft portions 10e and 12e of the first hinge shaft 10 and the second hinge shaft 11 have the engaging pieces 26b and 27b to be joined to the deformed engagement holes 26a and 27a provided in the axial direction of the shaft center portion. The first A friction washer 26 and the first B friction member interposed between the flange portions 10d and 12d and the friction plate 25 are rotatably inserted and engaged. And a deformation insertion hole 28a, 29a into which the first deformation shaft portions 10e, 12e of the first hinge shaft 10 and the second hinge shaft 12 are inserted and engaged in the central portion axial direction. The second A friction washer 28 and the second B friction washer 29 interposed between the slide guide member 22 and the first A friction washer 26, the first B friction washer 27 and the second A to the friction plate 25 via the slide guide member 22. A first elastic means 32 and a second elastic means 33, which will be described later, press the friction washer 28 and the second B friction washer 29 in pressure contact with each other.

  Next, the suction means 17 includes a first suction means 17a on the upper first hinge shaft 10 side and a second suction means 17b on the lower second hinge shaft 12 side, which will be described together here. . The suction means 17 inserts and engages the second deformation shaft portions 10f and 12f of the first hinge shaft 10 and the second hinge shaft 12 into the deformation insertion holes 30a and 31a provided in the central portion axial direction, and also has side surfaces thereof. The first A curved cam convex portion 30b and the first B curved cam convex portion 30c, the second A curved cam convex portion 31b, and the second B curved cam convex portion 31c provided on the outer side and the inner side of the connecting member 20, respectively. The large and small first A curved cam recesses 20f and 1B curved cam recesses 20g, second A curved cam recesses 20h, and second B curved cam recesses 20i provided on the outer and inner side surfaces of the second bearing portions 20a and 20b are opposed to each other. First cam follower 30 and second cam follower 31 provided, and an insertion hole provided in contact with the first cam follower 30 and the second cam follower 31 in the axial direction of the central portion thereof A plurality of disc springs 32a, 32a,... 33a, 33a,... Provided by inserting the second deformation shaft portions 10f, 12f of the first hinge shaft 10 and the second hinge shaft 12 into 2b, 33b. The first elastic shaft 32 and the second elastic member 33, and the first hinge shaft 10 in the deformation insertion holes 34a and 35a provided in contact with the first elastic member 32 and the second elastic member 33 in the axial direction of the central portion thereof. A first presser washer 34 and a second presser washer 35 provided by inserting and engaging the second deformed shaft portion 10f and the second deformed shaft portion 12f of the second hinge shaft 12, and the first hinge shaft 10 and the second hinge shaft. The first and second tightening nuts 36h and 12h are screwed to the first male screw portion 10h and the second male screw portion 12h provided on the free end side of each of the second deformation shaft portions 10f, 12f. With 37 To have.

  The stopper means 19 also includes a first stopper means 19a on the first hinge shaft 10 side and a second stopper means 19b on the second hinge shaft 12 side, which will be described together here. The stopper means 19 includes a first stopper piece 23c and a second stopper piece 24c provided on the first lock cam member 23 and the second lock cam member 24, and a first bearing portion 22a and a second bearing portion 22b of the slide guide member 22. The first stopper portion 22f and the second stopper portion 22g are provided, and the first housing 2 and the second housing 3 are in the closed position and the fully opened position (both 180 degrees). Is to regulate.

  Next, the operation of the biaxial hinge 4 according to the present invention will be described below. First, in the state shown in FIG. 1B in which the first housing 2 and the second housing 3 are closed, as shown in FIGS. The second mounting plate 13 faces in the same direction. As shown in FIG. 8, the first cam recess 23b of the first lock cam member 23 is located on the upper side, and the outer periphery thereof is the first cam protrusion of the lock member 21. 21a, and the second cam recess 24b of the second lock cam member 24 is in engagement with the second cam projection 21b of the lock member 21, so that the first casing 2 and the second casing 3 In the closed state, the first hinge shaft 10 can rotate, but the second hinge shaft 12 cannot rotate. Therefore, in the closed state of the first casing 2 and the second casing 3, only the second casing 3 can be opened and closed with respect to the first casing 2 by the selective rotation restricting means 15. Is possible.

  Therefore, when the second housing 3 is opened with respect to the first housing 2, the first hinge shaft 10 rotates together, and the first cam convex portion 21 a on the upper side of the lock member 21 moves to the first lock cam member 23. Since the second casing 3 is opened while being in contact with the outer periphery, the first casing 2 cannot be rotated together with the second hinge shaft 12 by the selective rotation restricting means 15 during the opening / closing operation of the second casing 3. . Subsequently, when the second casing 3 is opened with respect to the first casing 2, the first A curved cam convex portion 30b and the first B curved cam convex portion of the first cam follower 30 of the first suction means 17a are initially set. The portion 30c encounters resistance when the first A curved cam concave portion 20f and the first B curved cam concave portion 20g provided on the connecting member 20 are removed, but the first A curved cam convex portion 30b and the first B curved cam convex portion 30c are the first ones. By escaping the 1A curved cam recess 20f and the 1B curved cam recess 20g, the second casing 3 is opened with respect to the first casing 2, and at this time, the upper portion of the first friction torque generating means 16a is opened. Since the friction torque is generated between the first A friction washer 26 and the upper second A friction washer 28 and the friction plate 25, the second casing 3 is connected to the first casing 2. It was opened free stop and one in which it is possible to stop holding the second housing 3 relative to the first housing 2 at any opening angle. The friction torque at this time is also created by the first suction means 17a of the suction means 17, but this is auxiliary, and the main friction torque in this case is the first friction torque generating means 16's first friction torque. It is created by the friction torque generating means 16a.

  In this way, when the second housing 3 is opened to the first housing 2 in a free stop, when the second housing 3 is opened 180 degrees, it is shown in FIGS. 5, 7, 15, and 16. As described above, since the first stopper piece 23c of the first lock cam member 23 of the first stopper means 19a contacts the first stopper portion 22f of the slide guide member 22, the rotation of the first hinge shaft 10 is restricted. The second housing 3 stops when it is opened 180 degrees with respect to the first housing 2. At the same time, as shown in FIG. 9, the first cam recess 23b of the first lock cam member 23 is rotated by 180 ° to come to the position of the first cam protrusion 21a of the lock member 21, and a gap is formed between them. Since a occurs, the rotation (opening / closing) of the first casing 2 is allowed.

  In addition, if it is going to close from the open position of 180 degree | times with respect to the 1st housing | casing 2 of the 2nd housing | casing 3, it will be closed without a problem. That is, when the second housing 3 is rotated in the closing direction with respect to the first housing 2, the first cam recess 23 b of the first lock cam member 23 that rotates together with the first hinge shaft 10 and the first of the lock member 21 are rotated. Since there is a gap a between the one cam projection 21a, the second casing 3 can be closed with respect to the first casing 2. Once the second housing 3 is rotated with respect to the first housing 2 in the closing direction, the outer periphery of the second housing 3 comes into contact with the first cam convex portion 21a. 21b remains in a fitted state with the second cam recess 24b of the second lock cam member 24 fixed to the second hinge shaft 12, and even when the second casing 3 is closed, the first casing The rotational movement of 2 is restricted.

  In this way, the second casing 3 can be freely opened and closed with respect to the first casing 2 between 0 degrees and 180 degrees, and during that time, the rotation of the first casing 2 is rotated by the selective rotation restricting means 15. Remains regulated.

  Next, when the first casing 2 is in the closed state with the second casing 3 as shown in FIG. 1B, the outer periphery of the first lock cam member 23 is as described above. Since it is in contact with the first cam projection 21a of the lock member 21, the opening / closing operation cannot be performed, but after opening the second casing 3 180 degrees, Can rotate up to 180 degrees in the opposite direction. That is, when the second housing 3 is rotated 180 degrees, the first cam recess 23b of the first lock cam member 23 is rotated 180 degrees and the first cam protrusion of the lock member 21 is rotated as shown in FIG. 21a, and a gap a is formed between them, so that the second lock cam member 24 attached to the second hinge shaft 12 with its rotation regulated can be rotated, and the first housing When the body 2 rotates, the outer periphery of the second lock cam member 24 comes into contact with the second cam convex portion 21b of the lock member 21, so that the second casing 3 cannot be closed.

  Therefore, when the first casing 2 is rotated relative to the second casing 3 in the opposite direction to that of the second casing 3, the second hinge shaft 12 rotates together, and the lower part of the lock member 21 is rotated. Since the second cam projection 21b on the side is opened while being in contact with the outer periphery of the second lock cam member 24, the second casing 3 can be rotated in the closing direction by the selective rotation restricting means 15. Disappear. When the first casing 2 is rotated with respect to the second casing 3, first, the second A curved cam convex portion 31b and the second B curved cam convex portion of the second cam follower 31 of the second suction means 17b. 31c encounters resistance when removing the second A curved cam concave portion 20h and the second B curved cam concave portion 20i provided in the connecting member 20, but the second A curved cam convex portion 31b and the second B curved portion of the second cam follower 31 are encountered. When the cam convex portion 31c escapes from the second A curved cam concave portion 20h and the second B curved cam concave portion 20i, the first casing 3 rotates with respect to the second casing 3, and at this time, the second friction The friction torque is generated between the second B friction washer 29 at the lower part of the torque generating means 16b and the first B friction washer 27 at the lower part of the torque generating means 16 and the friction plate 25. 2 rotates freely with respect to the second housing 3 and can stop and hold the first housing 2 with respect to the second housing 3 at an arbitrary rotation (opening / closing) angle. It is. The friction torque at this time is also created by the second suction means 17b of the suction means 17, but this is auxiliary, and the main friction torque at this time is the second torque of the friction torque generation means 16. Created by the friction means 16b.

  In this way, when the first casing 2 is rotated free-stopping in the direction opposite to the opening direction of the second casing 3 with respect to the second casing 3, it is rotated 180 degrees. By the way, as can be seen from FIGS. 7, 13, and 16, the second stopper piece 24 c of the second lock cam member 24 constituting the second stopper means 19 b is the second stopper portion of the slide guide member 22. Since the rotation of the second hinge shaft 12 is restricted by coming into contact with 22g, the first casing 2 stops when it is opened 180 degrees with respect to the second casing 3. This state is just a state in which the first housing 2 and the second housing 3 overlap each other.

  In addition, if it is going to return the 1st housing | casing 2 to the original position from the open position of 180 degree | times with respect to the 2nd housing | casing 3, it can return without a problem. That is, from the state shown in FIG. 10, when the first housing 2 is rotated in the closing direction with respect to the second housing 3, the outer periphery of the second lock cam member 24 that rotates together with the second hinge shaft 12 is The first cam convex portion 21 a of the lock member 21 is in contact with the second cam convex portion 21 b of the lock member 21, and the first cam concave portion 23 b of the first lock cam member 23 fixed to the first hinge shaft 10. Since the fitting state is maintained, the first casing 2 can be rotated in the direction of the original position. At this time, in the second housing 3, the first cam concave portion 23 b of the first lock cam member 23 fixed to the first hinge shaft 10 is in a fitted state with the first cam convex portion 21 a of the lock member 21. Therefore, the opening / closing operation of the second housing 3 remains restricted.

  As described above, the first casing 2 can be freely rotated between 0 degree and 180 degrees with respect to the second casing 3 in a state where the second casing 3 is opened 180 degrees. In the meantime, the opening / closing operation of the second housing 3 remains restricted by the selective rotation restricting means 15. As is apparent from the above description, the second casing 3 and the first casing 2 are selectively opened and closed by the selective rotation restricting means 15, and the other opening / closing operation is restricted during one opening / closing operation. .

  In the invention according to the first embodiment described above, when the first casing and the second casing are in the closed state, only the second casing 3 is compared with the first casing 2. Can be opened and closed, and when the second casing 3 is opened with respect to the first casing 2, the first casing 2 is opened and closed (or rotated) with respect to the second casing 3 during the opening / closing operation. Can not do it. The first casing 2 opens and closes the first casing 2 with respect to the second casing 3 after the second casing 3 is opened 180 degrees with respect to the first casing 2 ( The second housing 3 cannot be opened and closed with respect to the first housing 2 during the opening / closing operation.

  On the other hand, when the biaxial hinge according to the second embodiment shown in FIGS. 20 to 22 is in the closed state in which the first housing and the second housing are overlapped with each other, the first housing Both the second housing 3 and the second housing 3 can be opened and closed. When one of the housings is opened and closed with respect to the other housing, the other housing cannot be opened and closed. When both the first casing 2 and the second casing 3 reach a predetermined opening angle (or rotation angle), both the first casing 2 and the second casing 3 can be opened and closed. In this case, once one casing is opened / closed, the other casing cannot be opened / closed.

  That is, according to FIGS. 20 to 22, the outer circumferences of the first lock cam member 41 and the second lock cam member 42 of the biaxial hinge 40 according to the second embodiment are spaced apart by 180 degrees from the first A cam recess 41 b and the second lock cam member 42, respectively. A 1B cam recess 41c, a second A cam recess 42b, and a second B cam recess 42c are provided, and each of the second deformation shaft portions 10f and 12f of the first hinge shaft 10 and the second hinge shaft 12 has a respective deformation insertion hole. 41a and 42a are inserted and engaged. The same reference symbols denote the same members as those in the first embodiment.

  Therefore, in a state where the first casing and the second casing (not shown) are both closed, as shown in FIG. 20, the first cam protrusion 21a and the second cam protrusion of the lock member 21 21b opposes the first B cam recess 41c and the second A cam recess 42b of the first lock cam member 41 and the second lock cam member 42, respectively, and a gap b is formed, so that the first hinge shaft 10 and the second hinge shaft Since both 11 can rotate, both the first housing and the second housing can be opened and closed.

  However, when the opening / closing operation of either the first casing or the second casing is performed, along with the rotating operation of either the first hinge shaft 10 or the second hinge shaft 12 that rotates, Either the first lock cam member 41 or the second lock cam member 42 rotates together, and this rotation operation causes the first cam convex portion 21a or the second cam convex portion 21b of the lock member 21 to move to the first lock cam member. 41 or the second lock cam member 42 is in contact with the outer periphery of the second lock cam member 42, so that the other rotation is restricted.

  FIG. 21 shows a state in which the second housing 3 is opened 180 degrees with respect to the first housing 2, and this state is obtained by rotating the second housing 3 in the closing direction. In a state where the second casing 3 can be returned to the position and at the same time the second casing 3 is opened 180 degrees with respect to the first casing 2, the first casing 2 is moved relative to the second casing 3. And can be rotated in the opposite direction. Of course, even in this state, when either the first casing 2 or the second casing 3 is rotated, the other rotation is restricted.

  As shown in FIG. 22, even when the first housing 2 and the second housing 3 are both opened 180 degrees, the first cam convex portion 21a and the second cam convex portion of the lock member 21 are used. Since 21b faces the first B cam recess 41c and the second B cam recess 42c of the first lock cam member 41 and the second lock cam member 42, both the first hinge shaft 10 and the second hinge shaft 12 are rotatable. Therefore, both the first casing and the second casing can be opened and closed. However, when either the first casing or the second casing is being opened / closed, the outer periphery of each of the first lock cam member 41 and the second lock cam member 42 is the first of the lock member 21 as described above. Since the first cam convex portion 21a or the second cam convex portion 21b comes into contact, the other opening / closing operation is restricted.

  Even if it implements in this way, a fixed regularity will arise in the opening / closing operation of the 1st housing | casing 2 and the 2nd housing | casing 3, and the objective of this invention can be achieved. It should be noted that the above is an example, and the present invention is not limited to this, and the position where the first cam recess 23b and the second cam recess 24b are provided on the outer periphery of the first and second lock cam members 23 and 24 is arbitrary. Is possible.

  Therefore, as is clear from the above description, the biaxial hinges 4 and 40 according to the present invention have the first casing 2 and the second casing 3 connected to the first hinge shaft 10 and the second hinge shaft 12, respectively. However, the opening / closing operation of 360 degrees in total is possible by alternately rotating 180 degrees, but the opening / closing angle is not particularly limited.

  Then, after the notebook computer can be used in its original way, the first housing is bent in the same direction with respect to the second housing to form a substantially L hour shape or a mountain shape. It is possible to use the tablet in a variety of ways as a tablet by superimposing it into a flat plate shape and directing the second casing toward the operator side.

  As is apparent from the above description, the present invention can cause the first and second elastic means 32 and 33 to act on both the friction torque generating means 16 and the suction means 17 in addition to those described above, for example. As a result, it is efficient and it is easy to use the outer shape of the lock member and the lock cam member, or to arbitrarily change the cam shape of the suction means, and to easily design the cam characteristics Therefore, the opening angle of the second housing 3 with respect to the first housing 2 can be prevented from wobbling at a specific angle, or a suction function can be provided at the specific opening angle.

  As other embodiments, the first A curved cam recesses 20f and the first B curved cam recesses 20g, the second A curved cam recesses 20h and the second B curved cam recesses 20i provided in the connecting member 20, the first cam follower 30, The first A curved cam convex portion, the first B curved cam convex portion, the second A curved cam convex portion and the second B curved cam convex portion provided on the second cam follower 31 are connected to the connecting member 20 and the first and second cam follower 30. , 31 can be changed into cam convex portions and cam concave portions provided radially from the outer periphery to the outer periphery. Further, the first and second elastic means 32, 33 made of a disc spring can be replaced with a spring washer, a compression coil spring, a synthetic resin material such as rubber having elasticity, etc. The second tightening nuts 36 and 37 can be replaced by caulking the end portions of the first hinge shaft 10 and the second hinge shaft 12. Furthermore, the first housing can be configured to be opened and closed before the second housing by changing the installation positions of the first and second cam recesses. In addition, the hinge case 14 does not interfere with the functions of the biaxial hinges 4, 5, and 40 without this, but with this hinge case, the biaxial hinge is selectively rotated when the biaxial hinge is attached to the terminal device. Since the regulating means, the friction torque generating means, the suction means and the like are not exposed to the outside, there is an advantage that the appearance is clear.

  Since the present invention is configured as described above, the biaxial hinge in the case where the first casing and the second casing are opened and closed relative to each other by 180 degrees or more, particularly in a terminal device such as a notebook personal computer or the like. However, it is particularly suitable for use in which a notebook personal computer is also used as a tablet at the same time.

DESCRIPTION OF SYMBOLS 1 Laptop PC 2 1st housing | casing 3 2nd housing | casing 4 2 axis | shaft hinge 5 2 axis | shaft hinge 10 1st hinge shaft 10d Flange part 12 2nd hinge shaft 12d Flange part 15 Selective rotation control means 16 Friction torque generation means 17 Suction means 19 Stopper means 20 Connecting member 20f 1A curved cam recess 20g 1B curved cam recess 20h 2A curved cam recess 20i 2B curved cam recess 21 Lock member 21a 1st cam projection 21b 2nd cam projection 22 Slide Guide member 22f 1st stopper part 22g 2nd stopper part 23 1st lock cam member 23b 1st cam recessed part 23c 1st stopper piece 24 2nd lock cam member 24b 2nd cam recessed part 24c 2nd stopper piece 25 Friction plate 26 1st A friction washer Turbocharger over (above)
27 1B Friction washer (bottom)
28 2nd A friction washer (top)
29 2B Friction washer (bottom)
30 1st cam follower 30b 1A curved cam convex part 30c 1B curved cam convex part 31 2nd cam follower 31b 2A curved cam convex part 31c 2B curved cam convex part 32 1st elastic means 33 2nd elastic means 40 2 Shaft hinge 41 First lock cam member 42 Second lock cam member