JP4440189B2 - Biaxial hinge device - Google Patents

Description

  The present invention relates to a biaxial hinge in which two sets of uniaxial hinges are used in parallel for use in a folding mechanism for folding a small electronic device such as a mobile phone, a notebook computer, an electronic notebook, a DVD monitor, and a remote controller. Relates to the device.

  In general, in a two-fold type mobile phone, a first housing in which a keyboard is installed and a second housing in which a liquid crystal monitor (LCD) that captures an image is connected are coupled by a single-axis hinge device. Accordingly, there is a configuration in which an opening / closing operation for rotating the second casing (LCD side) about the axis of the one-axis hinge is performed.

  Further, the two-fold type mobile phone is connected to the first case and the second case by connecting the first case and the second case with a two-axis hinge having a structure in which two axes intersect. A configuration in which one uniaxial hinge can be opened and closed between two housings, and a second housing provided with a liquid crystal monitor can be rotated by the other uniaxial hinge orthogonal to the one uniaxial hinge. is there.

  Further, in a conventional foldable mobile phone as shown in FIG. 17, in a uniaxial hinge that connects the first housing and the second housing so as to be capable of opening and closing, the compression coil spring 101 is inserted through the shaft 100, The compression coil spring 101 is provided with two torque generating portions each composed of a rotating cam 103 and a fixed cam 104 at both ends, thereby achieving high durability, downsizing, and weight reduction. It has been proposed (see, for example, Patent Document 1).

  The above-described two-fold type mobile phone has a structure in which a single uniaxial hinge is assembled between the first casing and the second casing to perform an opening / closing operation. In order to prevent a part of the first housing and the second housing from colliding with each other when the opening / closing operation is performed around the center, a rotation stopper mechanism for limiting the rotation angle is installed. This rotation stopper mechanism is referred to as a so-called housing stopper mechanism, and a projection for abutting is provided on the first housing and the second housing on which the hinges are installed, and the projection comes into contact with the first housing. The opening and closing angle between the body and the second housing is limited.

  For this reason, in a two-fold type mobile phone, it is common to use the second case with the second case opened at a rotation angle of 180 ° or less by the case stopper mechanism. .

In such a two-fold type mobile phone, the second housing can be rotated with respect to the first housing in an angle range close to approximately 360 °, or the first housing and the second housing can be rotated 180 °. There is a strong demand for diversification of the open state and expansion of the degree of freedom of the rotation operation, such as making it horizontal with no steps in the state of being rotated and opened.
JP 2002-206520 A

  In view of the above, the present invention diversifies the state when the first housing and the second housing that are joined by a hinge to form a small electronic device that can be opened and closed. It is an object of the present invention to newly provide a biaxial hinge device capable of expanding the degree of freedom of the rotation angle when rotating the second housing.

  A biaxial hinge device according to claim 1 of the present invention is a biaxial hinge device having two open / close shafts arranged in parallel for connecting the first housing and the second housing so as to be openable and closable. In the device, a fixed cam and a rotating cam inserted through the opening / closing shaft are in contact with each other at the contact cam surface, and a torque unit configured to generate sliding friction torque or click torque at the time of opening / closing operation in which the opening / closing shaft rotates is opened / closed by one Two sets of one-axis hinges that are arranged independently at two or more locations at both ends of a spring inserted through the shaft and two rotary cam portions arranged on the two-axis hinges are common to both opening and closing shafts. It is characterized in that it is configured to be integrated in a state where two sets of one-axis hinges are arranged in parallel by forming and assembling into two coupling parts.

  By configuring as described above, a single-shaft hinge having two or more torque units that generate sliding friction torque or click torque is used as a common component for the rotating cam portion, thereby reducing the number of components. The second housing can be rotated by about 360 ° with respect to one housing, the second housing can be stopped at an arbitrary angle, and the first housing and the second housing are in an open state with no steps. The first housing and the second housing are diversified so that the casing can be rotated around one opening / closing axis during the opening / closing operation, and the first housing and the second housing are diversified. And the degree of freedom of the rotation angle when rotating the second housing.

  A biaxial hinge device according to claim 1 of the present invention is a biaxial hinge device having two open / close shafts arranged in parallel for connecting the first housing and the second housing so as to be openable and closable. In the device, two or more positions are independently arranged at both ends of the springs penetrating each open / close shaft, and the open / close operation in which the fixed cam and the rotary cam inserted through the open / close shaft come into contact with each other at the contact cam surface and the open / close shaft rotates. A torque unit configured to generate sliding friction torque or click torque at times, a protrusion provided on the lock block portion that is arranged to rotate in synchronization with the opening and closing shaft, and a body stopper portion that is rotatably attached to the opening and closing shaft. Two sets of one-axis hinges having a rotation stopper portion for limiting the rotation angle of the opening and closing shaft by contact with the provided projections, and two rotation cam portions disposed on the two sets of one-axis hinges, One common connecting part for the open / close shaft By form assemble, characterized by being configured so as to be integrated in a state where one axis of the hinge is 2 sets arranged in parallel.

  According to a third aspect of the present invention, in the biaxial hinge device according to the first or second aspect, the rotating cam portion disposed on the two sets of one-shaft hinges is combined into one joint common to both opening and closing shafts. Forming and assembling the parts, and forming and assembling the body stopper part into one joint part common to both the opening and closing shafts, the two single-axis hinges are integrated in a parallel state, and the first housing When the second housing is rotated 180 ° along the circumference around the axis of one of the hinges installed on the body, the first housing and the second housing are in a horizontal state. Further, it is configured to be rotatable up to about 360 °.

  According to a fourth aspect of the present invention, in the biaxial hinge device according to the first or second aspect, the rotation for limiting the rotation angle to one of the two opening / closing shafts of the one-axis hinges. It is characterized by installing a stopper.

  By configuring as described above, by having two or more torque units that generate sliding friction torque or click torque, and further using a single-shaft hinge having a rotation stopper mechanism as a common component for the rotating cam portion The number of parts is reduced, the second housing can be rotated up to about 360 ° within the range allowed by the rotation stopper mechanism, the second housing can be stopped at any angle, and the first housing can be stopped. The body and the second housing can be opened in a step-free manner, and during the opening / closing operation, the casing can be operated around one opening / closing axis, so that the first housing and the second housing can be operated. Diversified the state when the housing is opened, the degree of freedom of the rotation angle when rotating the first housing and the second housing can be expanded, and a rotation stopper that restricts the rotation is provided And stop rotation of the housing at any angle, One control shaft can preferentially rotation operation at the start rolling.

  According to a fifth aspect of the present invention, in the biaxial hinge device according to the first or second aspect, a spring that penetrates a single opening / closing shaft through a torque unit that generates a sliding friction torque or a click torque during the opening / closing operation. A single-shaft hinge that is installed at two or more locations at both ends, and is formed on the contact cam surface between the fixed cam and the rotating cam for each torque unit to generate multiple click torques during rotation of the opening and closing shaft. The angle of the uneven cam groove and the number of grooves are changed.

  According to a sixth aspect of the present invention, in the biaxial hinge device according to the first or second aspect, the abutting cam surface of the fixed cam and the rotating cam constituting the torque unit disposed on the opening / closing shaft is flat. And is configured to generate only sliding friction torque.

  By configuring as described above, in addition to the operation and effect of the invention according to claim 1 or 2, the angle and number of the concave and convex grooves formed on the contact cam surface between the fixed cam and the rotating cam are changed. Alternatively, by forming it flat, it is possible to increase the angle at which the rotating housing is stopped and the number of stops.

  According to a seventh aspect of the present invention, in the biaxial hinge device according to the first or second aspect, the shaft of the opening / closing shaft is formed in a portion in which a part of the opening / closing shaft is formed in a cross-sectional shape having a major axis and a minor axis. Friction torque is generated by pressing the fixed cam that is movable in the direction and rotating in synchronization with the opening and closing shaft, and the rotating cam that is rotatably installed on the opening and closing shaft by the biasing force of the spring on the contact cam surface It is characterized by being configured.

  By configuring as described above, in addition to the operation and effect of the invention according to claim 1 or 2, at least the operation of the fixed cam can be stabilized, and so-called wobbling and backlash can be prevented.

  A biaxial hinge device according to an eighth aspect of the present invention is a biaxial hinge device having two open / close shafts arranged in parallel for connecting the first housing and the second housing so as to be openable and closable. In the apparatus, fixed cams are arranged on both surfaces of the rotating cam inserted through the opening / closing shaft, respectively, and the corresponding fixing cams are pressed against the both surfaces of the rotating cam by the spring biasing force. Two opening / closing shafts are provided with two sets of one-axis hinges configured by providing a torque unit configured to generate a sliding friction torque or a click torque during a rotating opening / closing operation and two rotary cam portions arranged on the two sets of one-axis hinges. It is characterized in that it is configured to be integrated in a state in which two sets of one-axis hinges are arranged in parallel by forming and assembling to one common coupling part.

  By configuring as described above, a single-shaft hinge having two or more torque units that generate sliding friction torque or click torque is fixed to both surfaces of one rotating cam with the rotating cam portion as a common part. By disposing the cam, the number of parts can be reduced and the size can be reduced, the second housing can be rotated about 360 ° with respect to the first housing, the second housing can be stopped at an arbitrary angle, The first housing and the second housing can be opened in a step-free manner, and during the opening / closing operation, the casing can be operated around one opening / closing axis, The state when the second housing is opened can be diversified, and the degree of freedom of the rotation angle when rotating the first housing and the second housing can be expanded.

  According to a ninth aspect of the present invention, in the biaxial hinge device according to the first or second aspect of the present invention, the outer shape of the rotary cam formed on one coupling component common to at least both opening and closing shafts is substantially the same. A torque unit is housed in a hinge case having an internal shape.

  By configuring as described above, in addition to the operation and effect of the invention according to claim 1 or claim 2, housing the torque unit in the case makes it possible to simplify the design and incorporation of the housing. In addition, since each open / close shaft can be integrated into one side of the housing, an area where a dermy shaft or wiring can be mounted can be secured on the opposite side of each open / close shaft.

  According to a tenth aspect of the present invention, in the biaxial hinge device according to the first or second aspect, the first casing or the second casing is joined to both ends of each of the two opening / closing shafts. It is characterized by constituting a part.

  By constructing as described above, in addition to the operation and effect of the invention according to claim 1 or claim 2, when the biaxial hinge device is assembled to the first housing and the second housing, Since it can be supported at both ends of the two open / close shafts, the fixing force can be improved and the reinforcement structure of the housing can be simplified.

  According to a tenth aspect of the present invention, in the biaxial hinge device according to the first or second aspect, the rotating cam formed on one coupling component common to both the opening and closing shafts, the device housing or the case. A fastening hole for a fastening part to be fastened is formed.

  By configuring as described above, in addition to the operation and effect of the invention according to claim 1 or 2, it is possible to easily fix the biaxial hinge device to the device housing or the case. It can be firmly fixed to prevent backlash and improve durability.

  According to the biaxial hinge device of the present invention, the state when the first housing and the second housing connected by the hinges are opened to form a small electronic device that can be opened and closed is diversified. There is an effect that the degree of freedom of the rotation angle when rotating the body and the second housing can be expanded.

  Hereinafter, a first embodiment of a biaxial hinge device of the present invention will be described with reference to FIGS. 1 to 6, 8, 15, and 16. FIG.

  In the biaxial hinge device 1 according to the first embodiment, as shown in FIG. 16, a keyboard 7- is shown in a state in which a two-fold type mobile phone is opened in a substantially horizontal state with no step between the two cases. 1 is mounted and used so as to be coupled between the first housing 7 in which 1 is disposed and the second housing 8 in which the LCD monitor 8-1 is disposed.

  This biaxial hinge device 1 is related to FIG. 1 (parts relating to an example of an embodiment relating to claim 2 for the biaxial hinge device are shown) and FIG. 2 (related to claim 2 for the biaxial hinge device). As shown in the assembly example of the embodiment), the rotation shafts of the two sets of one-axis hinges are arranged in parallel to form a single unit.

  In this biaxial hinge device 1, one opening / closing shaft 10 (lower opening / closing shaft as viewed in FIGS. 1 and 2) is assembled to the first housing 7 (keyboard side), and the other opening / closing shaft 11 (FIG. 1). And the upper opening / closing shaft (as viewed in FIG. 2) is assembled to the second casing 8 (LCD side).

  The pair of opening / closing shafts 10 and 11 is made of metal, and is formed into a predetermined shape by cutting, header processing, or the like, and is subjected to heat treatment or surface treatment as necessary. As shown in FIG. 3 (the embodiment of the invention of claim 7 is shown), the pair of opening / closing shafts 10 and 11 has a part of a circle with a large diameter from the left as viewed in the figure. The first spline-shaped portion 11-1 having a cut oval shape (a cross-sectional shape having a major axis and a minor axis other than a circle), a circular shaft portion 11-2 having a circular cross section, and a part of a small-diameter circle are cut. The second spline-shaped portion 11-3 having an oval shape is formed, and a fixing portion 11-4 having a substantially square cross section is formed to prevent high-precision alignment and caulking.

  A pair of opening / closing shafts 10 and 11 that are parallel to each other and arranged at a predetermined interval are provided with a pair of stopper lock blocks 12, an integral stopper body stopper 13, a pair of torque plates 14, and an integral structure. The first rotary cam 15, the pair of first fixed cams 16, the pair of compression coil springs 17, the pair of second fixed cams 18, the integral second rotary cam 19, and the pair of riveting rings 20. And assembling.

  This stopper lock block 12 is shown in FIGS. 4 (a), (b), (c) (in FIGS. 4 (a), (b), and (c), parts related to an example of the embodiment of claim 2 are shown. As shown in the figure, a fitting recess 12-2 for fitting into the first spline-shaped part 11-1 and a shaft hole 12-4 through which the round shaft part 11-2 penetrates are drilled. .

  Further, the stopper lock block 12 is provided with a protrusion 12-3 having a trapezoidal cross section, for example, which constitutes a rotation stopper. Two protrusions 12-3 project from the shaft hole 12-4 at a symmetrical position shown by hatching in FIG.

  In the stopper lock block 12, the angle in the range where the protrusion 12-3 is provided is 40 °, and the angle in the range of the flat portion 12-6 (the portion shown in white in FIG. 4C) is 140 °. Yes.

  Each stopper lock block 12 configured as described above is integrally rotated at the boundary between the first spline-shaped portion 11-1 and the round shaft portion 11-2 between the opening and closing shaft 10 and the opening and closing shaft 11. Fit and arrange.

  The body stopper 13 for the stopper is shown in FIGS. 4D and 4E (note that FIGS. 4D and 4E show parts related to an example of the embodiment of claim 2). As shown, each open / close shaft 10, 11 is assembled as a common part.

  The stopper body stopper 13 is provided with a shaft hole 13-2 and a shaft hole 13-5 that penetrate the opening and closing shafts 10 and 11 in a rotatable manner, and for example, a cross-section table for forming a rotation stopper around the shaft hole 13-2. Protrusions 13-4 having a shape are provided.

  The protrusion 13-4 portion constitutes a rotation stopper mechanism that limits the rotation angle by abutting against the protrusion 12-3 portion of the stopper lock block 12.

  The stopper body stopper 13 is arranged so that the round shaft portions 11-2 of the open / close shafts 10 and 11 corresponding to the shaft hole 13-2 and the shaft hole 13-5 can be freely inserted. The side surface 13-6 is formed on a flat surface that does not form the uneven groove surface.

  In the stopper body stopper 13 shown in FIG. 4 (d), two stopper protrusions 13-4 shown symmetrically by hatching in the figure centering on the shaft hole 13-2 or 13-5, and the white in the figure. The flat part 13-3 shown by the part is provided, the angle of the upper and lower stopper projections 13-4 is 50 °, and the angle of the flat part 13-3 is 130 °.

  The torque plate 14 is a component for generating torque by sliding friction with the flat plate surface of the rotating cam 14, and FIGS. 6 (a) and 6 (b) are shown in FIG. 6 (a) and FIG. 6 (b). As shown in (1), (2), (2), (5), and (6), components related to an example of the embodiment are shown. A shaft hole 14-2 for fitting formed in an oval shape to be fitted into the two spline-shaped portions 11-3 is drilled.

  In the figure, the side surfaces 14-3 and 14-4 of the torque plate 14 are shown as flat plate surfaces, but a groove or hole (not shown) is installed on the circumference of the shaft hole 14-2 in the axial diameter direction. You may comprise so that an increase in friction torque and a grease reservoir may be installed.

  The first rotating cam 15 and the second rotating cam 19 are shown in FIG. 5 (note that FIG. 5 shows parts related to an example of the embodiments of claims 1, 2, and 5). As shown, it is configured as an integral structure member that is assembled as a common part to each of the opening and closing shafts 10 and 11. Since the second rotating cam 19 has the same structure as the first rotating cam 15, the first rotating cam 15 will be described below.

  The first rotating cam 15 is provided with a shaft hole 15-2 and a shaft hole 15-4 for freely inserting the second spline-shaped portion 11-3 portion at predetermined intervals, with a predetermined interval between them. Protrusions (hatched parts in the figure) 15-1, 15-3, 15-7, flat part (bottom part) 15-5, and slope part 15-6 around the axis are 180 ° symmetrical about the shaft hole. Configure in the correct position.

  In addition, as shown in FIG.5 (d), as for the 1st rotation cam 15-9, the projection part 15-7 is 54 degrees, the slope part 15-6 of one side is 36 degrees, and the flat part 15-5 is 54 degrees. The example which installed two grooved cam surfaces up and down is shown.

  The first rotating cam 15 has a protrusion 15-8 as shown in FIGS. 5C and 5D on the outer periphery for the purpose of preventing movement or backlash of the biaxial hinge when it is housed and fixed in the hinge case 25. It may be provided.

  The first fixed cam 16 and the second fixed cam 18 are shown in FIGS. 6 (c) and 6 (d) (note that FIG. 6 shows the implementation of claims 1, 2, 5, and 6). As shown in the figure, parts related to an example of the form are shown). The shaft is inserted into each of the open / close shafts 10 and 11 and is slidable in the axial direction, but is formed in an oval shape to rotate in synchronization with the shaft. Hole 16-2 is drilled. Since the second fixed cam 18 has the same structure as the first fixed cam 16, the first fixed cam 16 will be described below.

  The first fixed cam 16 includes a protruding portion (a portion indicated by hatching in the drawing) 16-3, a flat portion (bottom portion) 16-5, and a slope portion 16-4 along the plane circumference of the disc-shaped cam. In this case, the shaft hole 16-2 is configured at a 180 ° symmetrical position. In addition, the 1st fixed cam 16 shown in FIG.6 (c) is the example which installed the groove | channel where the projection part 16-3 is 54 degrees, the slope part 16-4 of one side is 36 degrees, and the flat part 16-5 is 54 degrees. Indicates. The groove angle of the first fixed cam 16 shown in FIG. 6 (c) is the same as the groove angle shown in the first rotating cam 15-9 of FIG. 5 (d).

  Both cams 15-9, 16 constitute a torque unit that generates click and sliding torque by repeated alignment contact and non-alignment contact of the concave and convex grooves, and generates the click torque twice during about 360 ° rotation. .

  5 is not limited to the configuration in which the protrusion and the flat portion are installed at an angle of 54 ° at a 180 ° symmetrical position, and the click cam position is not limited to the click position. You may comprise in the cam which changed the design of the number and angle of the uneven groove | channel according to the strength of torque. Furthermore, the torque unit can be installed on the same axis with units having different click characteristics. 5 and 6 is not limited to a fan shape or a trapezoidal shape having a slope, but may be a cylindrical or square columnar boss, or a combination of a boss and a hole.

  The compression coil spring 17 is shown in FIG. 8 (a) (note that FIGS. 8 (a) and 8 (b) show parts related to an example of the embodiment of claim 1 and claim 2). The end surfaces are polished in parallel, and the coil portion is configured as a compression coil spring formed in a size that can be loosely inserted into the open / close shafts 10 and 11. The compression coil spring 17 is disposed between the back plane side of the grooved cam surface of the fixed cam 16 and the back plane side of the grooved cam surface of the second fixed cam 18.

  Note that the disc spring 17-1 shown in FIG. 8B can be manufactured by pressing from a spring plate, and can be used in place of the compression coil spring 17. In the present invention, either the compression coil spring 17 or the disc spring 17-1 is selected and used from the specifications such as the size and durability of the hinge.

  The rivet ring 20 is configured in a structure that can be fixed to the fixing portions 11-4 of the opening and closing shafts 10 and 11 by caulking.

  Next, a procedure for assembling the biaxial hinge device 1 using the components having the above-described configuration will be described.

  In assembling the biaxial hinge device 1, first, the opening and closing shafts 10 and 11 are respectively inserted with lock blocks 12 at the boundary portions between the first spline-shaped portion 11-1 and the round shaft portion 11-2. Furthermore, the body stopper 13 which is a common part is inserted into the portion of the round shaft portion 11-2, and each torque plate 14 is inserted into the second spline-shaped portion 11-3 portion.

  Next, the second spline-shaped portion 11-3 of each of the opening and closing shafts 10 and 11 is inserted with the rotating cam 15 which is a common part having a larger outer shape than the other parts, and then each first fixed cam 16 is inserted. Assembling is performed such that the concave and convex groove cam surface of the fixed cam 16 is brought into contact with the concave and convex groove cam surface of the rotating cam 15.

  Next, the compression coil spring 17 is inserted through the second spline-shaped portion 11-3 of each of the open / close shafts 10 and 11 into the back plane side of the grooved cam surface of the fixed cam 16. Further, a second fixed cam 18 is inserted into the second spline-shaped portion 11-3 portion of each of the opening and closing shafts 10 and 11 as a second torque generating portion after the compression coil spring 17, and is a common component. As shown in FIG. 2, the two-rotation cam 19 is inserted and assembled so that the cam surface is brought into contact, and finally, the fixed portion 11-4 is fixed in a state where it passes through the rivet ring 20. The hinge device 1 is completed.

  When the rivet ring 20 is fixed to the fixing portion 11-4, a load is applied so as to compress the compression coil spring 17, and after press-fitting to the fixing portions 11-4 of the open / close shafts 10, 11, the shaft end portion is caulked. Fix by processing.

  In the biaxial hinge device 1 shown in FIG. 1 and FIG. 2, the components assembled to the opening / closing shaft 10 and the opening / closing shaft 11 are basically configured to have the same shape and movement. However, the biaxial hinge device of the present invention may be configured such that the shape, the number of components, and the movement of the parts constituting the hinge are different between the open / close shaft 10 and the open / close shaft 11 depending on the hinge specifications.

  In the biaxial hinge device 1 shown in FIG. 2, the state of the first rotary cam 15, the first fixed cam 16, the second fixed cam 18, and the second rotary cam 19 of the torque unit is such that the concave and convex grooves are not mutually connected. It is pressed in a sliding state that is in alignment. In the biaxial hinge device 1, in this sliding state, the compression coil spring 17 is compressed most in the axial direction and exhibits a large repulsive force.

  In this biaxial hinge device 1, the click torque is adjusted so that the cam surfaces with the concave and convex grooves of the first rotary cam 15 and the second rotary cam 19, the first fixed cam 16 and the second fixed cam 18 are aligned. Generated by the four torque units that come into contact.

  Further, the sliding torque is measured between the stopper lock block 12 and the stopper body stopper 13, between the stopper body stopper 13 and the torque plate 14, between the torque plate 14 and the first rotating cam 15, and second. It occurs at a total of 8 locations between the rotating cam 19 and the riveting ring 20. When the fixed and rotating cams are in contact with each other, sliding torque is generated.

  As shown in FIG. 4, the rotation stopper for limiting the rotation angle in the biaxial hinge device 1 shown in FIG. 2 has a 40 ° lock block protrusion 12-3 formed by a 130 ° stopper body stopper 13. The flat portion 13-3 can be slidably contacted, and the flat portion 12-6 of the 140 ° lock block can be slidably contacted with the protrusion 13-4 of the 50 ° body stopper.

  The rotation range of both parts configured in this way is that the protrusion 12-3 and the protrusion 13-4 rotate within the angular area of the flat portion 13-3 and the flat portion 12-6, and the protrusion 13-4 is located at both ends. And the angle until it hits the protrusion 12-3.

  In this example, the flat portion (130 °) −protrusion (40 °) = 90 ° and the flat portion (140 °) −protrusion (50 °) = 90 ° are the rotatable regions. In the example of FIG. 4D, the angle settings of the protrusion 13-4 and the flat portion 13-3 are the same for the upper and lower rotation stoppers, and two stopper lock blocks 12 shown in FIG. 4C are used. Then, both the upper and lower uniaxial hinges can be rotated by 90 °. In this example, the maximum rotation angle of the biaxial hinge device 1 is 180 °, which is twice 90 °.

  The rotation stoppers are set in such a way that the number of protrusions and flat portions, the method of installing them in parallel along the circumference of the angle or axial diameter direction, the upper and lower open / close shafts 10 for the stopper lock block 12 and the stopper body stopper 13. , 11 can be combined with a method using parts with different condition settings, and various combinations can be made within a 360 ° rotation range. In addition, as materials for the stopper lock block 12 and the stopper body stopper 13, metals, resins, and the like having excellent strength and wear resistance can be used. The protrusions may be formed by embedding pins in addition to being formed by pressing and resin molding.

  Next, the biaxial hinge device according to the second embodiment of the present invention will be described with reference to FIG. 7 (note that FIG. 7 shows an example of assembly of the biaxial hinge device according to the first embodiment of the present invention. Will be explained.

  The biaxial hinge device 1 shown in FIG. 7 has a configuration in which monoaxial hinges are arranged in parallel and integrated by rotating cams 15 and 19 which are common parts. The biaxial hinge device 1 includes a first rotary cam 15 with a concave and convex groove, a first fixed cam 16 with a concave and convex groove, a compression coil spring 17, a second fixed cam 18, and a second The rotary cam 19 is inserted, and finally the rivet ring 20 is fixed by caulking after being press-fitted into the fixing portions 11-4 of the opening and closing shafts 10 and 11.

  In the state shown in FIG. 7, the biaxial hinge device 1 is configured such that the first rotating cam 15, the second rotating cam 19, the first fixed cam 16, and the second fixed cam 18 are uneven groove cams. The state is inconsistent and the sliding torque is generated. In the state shown in FIG. 7, between the back plate portion of the grooved surface of the first rotating cam 15 and the end surface portion of the first spline-shaped portion 11-1 of each opening / closing shaft 10, 11, and the second rotation A sliding torque due to friction is generated during rotation at two locations, the back flat plate portion of the grooved surface of the cam 19 and the flat plate portion of the riveting ring 20.

  In the biaxial hinge device 1 shown in FIG. 7, the opening / closing shafts 10 and 11 are not limited by the stopper lock block 12 and the stopper body stopper 13 in the rotation range. Can be obtained.

  Note that the configurations, operations, and effects of the second embodiment other than those described above are the same as those of the first embodiment described above, and thus description thereof is omitted.

  Next, a biaxial hinge device according to a third embodiment of the present invention will be described with reference to FIG. 9 (note that FIG. 9 shows parts related to an example of the embodiment of claim 9). . The biaxial hinge device according to the third embodiment is configured by housing the biaxial hinge device 1 with a rotation stopper in a case 21.

  As shown in FIGS. 9D and 9E, the case 21 is provided with a bottom plate 21-2 on one side of a cylindrical case having an oval cross section, and the opening and closing shafts 10 and 11 are provided on the bottom plate 21-2. Each hole 21-3 is formed by drilling.

  As shown in FIGS. 9A, 9B, and 9C, the biaxial hinge device 1 housed in the case 21 includes a first rotating cam 15, a second rotating cam 19, and a stopper body. The biaxial hinge device 1 is housed in a case 21 having an inner shape substantially the same as the outer shape of the stopper 13.

  In the biaxial hinge device 1 configured to be accommodated in the case 21, the open / close shafts 10 and 11 are respectively passed through the shaft holes 21-3 formed in the case 21 and then fixed to the outside of the case 21. By fixing the riveting ring 20 to the portion 11-4 by caulking, the biaxial hinge device 1 and the case 21 are integrated.

  The biaxial hinge device 1 configured to be housed in the case 21 is in a state in which the opening / closing shaft 11 is rotated by 90 ° with respect to the opening / closing shaft 10 in the state shown in FIGS. 9 (a), 9 (b) and 9 (c). Yes, the cam of the torque unit on the open / close shaft 11 side is in a clicked state, and the torque unit on the open / close shaft 10 side is in a sliding state.

  As shown in FIG. 9B, the biaxial hinge device 1 configured to be housed in the case 21 includes the outer shapes of both the first rotating cam 15, the second rotating cam 19, and the stopper body stopper 13. The case 21 is housed in a state in which the inner wall is in contact, but the outer shape of any one of the parts may be used instead.

  In the state shown in FIG. 9B, the biaxial hinge device 1 configured to be housed in the case 21 has the open / close shaft 10 in a sliding torque and the open / close shaft 11 in a click torque state. Now, when the open / close shafts 10 and 11 are to be rotated, the open / close shaft 10 having a small friction torque first moves. By utilizing this, in the biaxial hinge device 1 of the third embodiment, only one side of the first housing or the second housing connected to the opening / closing shaft 10 or the opening / closing shaft 11 is rotated first. A rotation priority operation that starts or stops the casing on one side first is possible. This rotation priority operation can be used in combination with the function of the rotation stopper.

  FIG. 9 (f) shows a configuration in which the biaxial hinge device 1 shown in FIG. 7 is fixed by a fixing plate 22 and a fixing ring 23 as means to replace the fixing means by the riveting ring 20 after being housed in the case 21. Indicates.

  As shown in FIG. 9 (g) (FIG. 9 shows parts related to an example of the embodiment of claim 10), the biaxial hinge device 1 shown in FIG. In addition, each open / close shaft 10, 11 is configured as a hinge unit extended from both ends of the case 21.

  In this hinge unit, the opening / closing shaft extending portions 10-12 and 11-12 extending from both ends of the case 21 can be joined to the housing with the structure of both bearings. There is an advantage that the design can be simplified.

  Since the configuration, operation, and effects of the third embodiment other than those described above are the same as those of the first embodiment described above, description thereof is omitted.

  Next, a biaxial hinge device according to a fourth embodiment of the present invention will be described with reference to FIG. 10 (note that FIG. 10 shows examples described in claim 2 and claim 6). The biaxial hinge device according to the fourth embodiment is configured such that the characteristics of the torque units of the opening / closing shaft 10 and the opening / closing shaft 11 are different.

  A biaxial hinge device 1 shown in FIG. 10 is different from the biaxial hinge device 1 with a rotation stopper shown in FIG. The second rotating cam 19 and the first fixed cam 16 and the second fixed cam 18 are configured as a flat plate-shaped rotating cam with no uneven grooves, so that only sliding torque is generated. With this configuration, the opening / closing shaft 11 has six sliding torque surfaces.

  Since the configuration, operation, and effects of the fourth embodiment other than those described above are the same as those of the first embodiment described above, description thereof is omitted.

  Next, a biaxial hinge device according to a fifth embodiment of the present invention will be described with reference to FIG. 11 (note that FIG. 11 shows examples described in claim 4 and claim 6). The biaxial hinge device according to the fifth embodiment is configured by omitting the rotation stopper mechanism of the uniaxial hinge portion constituting the opening / closing shaft 10 and providing a grooved cam torque unit.

  The biaxial hinge device 1 shown in FIG. 11 is different from the biaxial hinge device 1 with a rotational stopper shown in FIG. It is configured as a torque unit with a cam.

  In addition, the uniaxial hinge portion constituting the opening / closing shaft 10 is configured such that the cam operating state is changed by the left and right torque units toward the FIG. 11 in the state shown in FIG. Dynamic torque), and the right one is in alignment (click torque).

  This biaxial hinge device 1 is configured so that the click position of the torque unit is different by means of changing the direction of the oval shaft hole 16-2 or the angle of the groove position 16-3 shown in FIG. 6C. be able to.

  Since the configuration, operation, and effects of the fifth embodiment other than those described above are the same as those of the first embodiment described above, description thereof is omitted.

  Next, a biaxial hinge device according to a sixth embodiment of the present invention will be described with reference to FIG. 12 (note that FIG. 12 shows an example described in claim 1). In the biaxial hinge device according to the sixth embodiment, the left and right torque units included in the opening and closing shafts 10 and 11 are configured so that the click torque generation angle differs between the left and right.

  In the biaxial hinge device 1 shown in FIG. 12, the groove cam of the torque unit is arranged according to the click strength (suction and output), the number of clicks during 360 ° rotation, and the open / close shafts 10 and 11. It can be arbitrarily designed and configured in accordance with a request for priority rotation operation to start or stop rotation first.

  Since the configuration, operation, and effects of the sixth embodiment other than those described above are the same as those of the first embodiment described above, description thereof is omitted.

  Next, a biaxial hinge device according to a seventh embodiment of the present invention will be described with reference to FIG. 13 (note that FIG. 13 shows an example described in claim 11). In the biaxial hinge device according to the seventh embodiment, a screw hole 15-10 for fixing the hinge is provided in the projecting portion 15-3 of the first rotating cam 15, and a hinge case 25 as a device housing or case is provided. The mechanism portion of the biaxial hinge device is fastened and integrated with a screw 26 that is a fastening component (for example, a screw, a rivet, or a pin).

  Thus, in the structure which fastens the mechanism part of a biaxial hinge apparatus to the hinge case 25, it can prevent that a hinge moves within the case 25 or generation | occurrence | production of backlash by an insertion gap.

  Since the configuration, operation, and effects of the seventh embodiment other than those described above are the same as those of the first embodiment described above, description thereof is omitted.

  Next, a biaxial hinge device according to an eighth embodiment of the present invention will be described with reference to FIG. 14 (note that FIG. 14 shows an example described in claim 8). In the biaxial hinge device according to the eighth embodiment, the first fixed cam 16 and the second fixed cam are provided on both side surfaces of the first rotary cam 15 which is a common part for connecting the single axis hinge portions in parallel. And a cam surface with a groove which abuts on each.

  That is, in the biaxial hinge device 1 shown in FIG. 14, grooved cam surfaces are formed on both side surfaces at the center in the length direction of the second spline-shaped portion 11-3 in each of the opening and closing shafts 10 and 11. The first rotating cam 15 is arranged, and the corresponding first fixed cam 16 and second fixed cam 18 are brought into contact with the grooved cam surfaces on both side surfaces, respectively, so that the step shape of the first spline-shaped portion 11-1 is obtained. A compression coil spring 17 is provided between the end face and the first fixed cam 16 and between the riveting ring 20 and the second fixed cam 18 so as to be in pressure contact with each other.

  In the biaxial hinge device 1 shown in FIG. 14, in addition to the two sets of torque units at the center of the open / close shafts 10 and 11, other torque units are added to both sides of each compression coil spring 17. May be configured.

  Since the configuration, operation, and effects of the eighth embodiment other than those described above are the same as those of the first embodiment described above, description thereof will be omitted.

  Next, various first casings 7 and second casings 8 in a two-fold type mobile phone in which the first casing and the second casing are coupled by the biaxial hinge device 1 configured as described above. 15 and the state in which the degree of freedom of the rotation angle between the first housing 7 and the second housing 8 is enlarged will be described with reference to FIG.

  FIG. 15A shows a state in which both the casings 7 and 8 are closed and the keyboard 7-1 and the LCD 8-1 face each other. FIGS. 15B and 15C show a case where either the first housing 7 or the second housing 8 is rotated by 90 ° from the state of FIG.

  FIGS. 15D, 15E, and 15F show a case where the state is rotated 90 ° and opened 180 ° in the same manner from the states of FIGS. 15B and 15C. FIGS. 15 (g) and 15 (h) show a case where it is further rotated to 270 ° and opened.

  FIG. 15 (i) shows a state in which the first housing 7 and the second housing 8 are closed by rotating about 360 °. The closed state from FIG. 15 (i) to FIG. 15 (a) in the fully opened state can be realized by following the reverse of the above-described operation order.

  The operations of the first housing 7 and the second housing 8 during opening and closing shown in FIG. 15 are performed at the time of starting rotation between the one-shaft hinge portions of the opening and closing shaft 10 and the opening and closing shaft 11 every 90 °. It shows the variety of movements caused by the difference in torque or the configuration with rotation stopper. Although not shown, when the two sets of single-shaft hinges configured for the open / close shaft 10 and the open / close shaft 11 in the biaxial hinge device 1 have completely the same torque specifications, the first housing 7 and the second housing 8 can always be operated while maintaining a state in which the perpendicular to the case 21 and the opening angle between the two housings are the same.

  As shown in FIG. 15 (e) (note that FIG. 15 (e) shows an example described in claim 3), the case 21, the first and second housings are horizontal, because the opening / closing shaft 10 This is realized when the rotation angle of the one-axis hinge portion formed on the opening / closing shaft 11 is the same (here, the rotation angle is 90 °). Further, in the configuration of the biaxial hinge device 1, the states (a, b, e, g, i) in which the opening / closing shaft 11 rotates on the circumference with the opening / closing shaft 10 as the center of rotation are alternately displayed. The opening / closing shaft 10 and the opening / closing shaft 11 can be realized by rotating the same angle.

Further, in the state shown in FIG. 15D, only the hinge of the opening / closing shaft 11 of the second housing 8 is changed from the state in which the first housing 7 and the second housing 8 shown in FIG. This is when 180 ° is opened.
The state shown in FIG. 15F shows a state where only the hinge of the opening / closing shaft 10 of the first housing 7 is opened. The states shown in FIGS. 15D and 15F show the maximum opening angle that can be realized even in the conventional example using a single-axis hinge and the positional relationship between the casings.

  The biaxial hinge device of the present invention is configured by combining a click torque by a grooved cam and a rotation stopper mechanism of the hinge itself with a commonly used sliding torque mechanism or housing stopper mechanism. Thus, it is possible to realize a state in which one housing is stopped at an arbitrary angle in design, and is opened and closed so as not to generate a step between the two housings, and a rotation operation centered on the specified axis.

  In addition, this invention is not limited to embodiment mentioned above, Of course, it can take other various structures in the range which does not deviate from the summary of this invention.

It is a disassembled front view which shows the components structure of the biaxial hinge apparatus concerning 1st Embodiment of this invention (related to invention of Claim 2). It is a front view of the assembly state which shows the biaxial hinge device concerning 1st Embodiment of this invention (related to invention of Claim 2). FIG. 9 is an explanatory diagram of parts showing an opening / closing shaft of the biaxial hinge device according to the first embodiment of the present invention (related to the invention of claim 7). (A) (b) (c) is a front view, a side view, and a rear view showing a stopper lock block of the biaxial hinge device according to the first embodiment of the present invention (related to the invention of claim 2). (D), (e) is a front view and a side view showing a body stopper for a stopper. (A) (b) (c) is a side view showing the first rotating cam of the biaxial hinge device according to the first embodiment of the present invention (related to the inventions of claims 1, 2 and 5). It is a figure, a front view, and a rear view, (d) is a front view which shows the 1st rotation cam of another structure. (A) and (b) are a front view and a side view showing a torque plate of the biaxial hinge device according to the first embodiment of the present invention (related to the inventions of claims 5, 6 and 7). (C) and (d) are a front view and a side view showing the first fixed cam. It is a front view of the assembly state which shows the biaxial hinge apparatus concerning 2nd Embodiment of this invention (related to invention of Claim 1). (A) is a side view showing a compression coil spring of a biaxial hinge device according to a first embodiment of the present invention (related to the inventions of claims 1 and 2), and (b) shows this. It is the front view and side view which show the disk spring which can substitute. (A), (b), (c), (d), (e), (f), (g) are the third embodiment of the present invention (related to the inventions of claims 9 and 10). Left side view showing the biaxial hinge device related, front view in the assembled state, right side view, left side view showing the case portion, front view showing the case portion, front view showing the assembled state of other configurations, and other It is a front view of the assembly state which shows this structure. It is a front view of the assembly state which shows the biaxial hinge apparatus concerning 4th Embodiment of this invention (related to invention of Claim 2 and Claim 6). It is a front view of the assembly state which shows the biaxial hinge apparatus concerning 5th Embodiment of this invention (related to invention of Claim 4 and Claim 6). It is a front view of the assembly state which shows the biaxial hinge apparatus concerning 6th Embodiment of this invention (related to invention of Claim 1). (A), (b), (c) is a side view, a front view showing a first rotating cam portion of a biaxial hinge device according to a seventh embodiment of the present invention (related to the invention of claim 11), It is a front view which shows the biaxial hinge apparatus principal part. It is a front view which shows the biaxial hinge apparatus concerning 8th Embodiment of this invention (related to invention of Claim 1 and Claim 8). (A), (b), (c), (d), (e), (f), (g), (h), (i) are the present invention (Claim 1, Claim 2 and Claim). FIG. 6 is a side view illustrating a variation of an open / close state of a two-fold type mobile phone provided with a two-axis hinge device (related to the third invention). It is a perspective view which shows the two-fold type mobile phone provided with the biaxial hinge apparatus of this invention. It is a front view of the assembly state which illustrates the conventional 1 axis hinge.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hinge unit 2 Hinge unit without a stopper 3 Hinge unit with a case 4 Double cam type 1 axis hinge 7 The 1st case (keyboard side)
8 Second housing (LCD side)
10 First Open / Close Shaft 11 Second Open / Close Shaft 12 Stopper Lock Block 13 Stopper Body Stopper 14 Torque Plate 15 First Rotating Cam 16 First Fixed Cam 17 Compression Coil Spring 18 Second Fixed Cam 19 Second Rotating Cam 20 Rivet Ing ring 21 Case 22 Fixing plate 23 Fixing ring 25 Housing hinge case 26 Fixing screw

Claims (11)

A biaxial hinge device having two opening and closing shafts arranged in parallel for connecting the first housing and the second housing so as to be openable and closable,
One opening and closing shaft fixed to the first housing;
Another opening and closing shaft fixed to the second housing;
A coupling component that supports the one and the other opening and closing shafts in parallel and rotatably;
A torque unit that is provided on the one and other opening and closing shafts, and generates sliding friction torque or click torque in the one and other opening and closing shafts when the one and other opening and closing shafts rotate;
A rotation stopper portion that is provided on at least one of the one opening / closing shaft and the other opening / closing shaft and restricts a rotation angle of the opening / closing shaft with respect to the coupling component ;
Have
The torque unit includes a fixed cam that rotates in synchronization with the opening and closing shaft, a rotating cam that is fixed to the coupling component and that is rotatably inserted into the opening and closing shaft, and is inserted into the opening and closing shaft. together we are, anda spring biasing toward the rotating cam and the fixed cam to the fixed cam and the rotational cam abuts with the abutting cam surface,
The opening / closing shaft rotates while the contact cam surface of the fixed cam is pressed against the contact cam surface of the rotating cam by the spring, thereby generating sliding friction torque or click torque,
The rotating cam through which the one opening / closing shaft is inserted and the rotating cam through which the other opening / closing shaft is inserted are integrated to form the coupling component,
The rotation stopper portion is provided so as to be opposed to the lock block portion and the lock block portion that rotates in synchronization with the opening and closing shaft, and is fixed to the coupling component , and the opening and closing shaft is rotatable. And a body stopper portion inserted through
Both the lock block part and the body stopper part are formed with protrusions on the opposite end surfaces, and the opening / closing shaft rotates so that the protrusions of the lock block part come into contact with the protrusions of the body stopper part, A biaxial hinge device that restricts the rotation of the opening and closing shaft. A biaxial hinge device having two opening and closing shafts arranged in parallel for connecting the first housing and the second housing so as to be openable and closable,
One opening and closing shaft to which the first housing is fixed;
Another opening and closing shaft to which the second housing is fixed;
A coupling component that supports the one and the other opening and closing shafts in parallel and rotatably;
A first torque unit provided on the one opening / closing shaft and generating a sliding friction torque on the one opening / closing shaft when the one opening / closing shaft rotates;
A second torque unit provided on the other opening / closing shaft and generating a click torque in the other opening / closing shaft when the other opening / closing shaft rotates;
Have
The first torque unit includes a fixed cam that rotates in synchronization with the opening / closing shaft, a rotating cam that is fixed to the coupling component and through which the opening / closing shaft is rotatably inserted, and the opening / closing shaft. A spring that is inserted through and biases the fixed cam toward the rotating cam so that the fixed cam and the rotating cam come into contact with each other at a contact cam surface;
The contact cam surface of the fixed cam and the contact cam surface of the rotating cam are both flat, and the contact cam surface of the fixed cam is pressed against the contact cam surface of the rotating cam by the spring. When the open / close shaft rotates, sliding friction torque is generated,
The second torque unit includes a fixed cam that rotates in synchronization with the opening / closing shaft, a rotating cam that is fixed to the coupling component and through which the opening / closing shaft is rotatably inserted, and an opening / closing shaft. A spring that is inserted through and biases the fixed cam toward the rotating cam so that the fixed cam and the rotating cam come into contact with each other at a contact cam surface;
Cam grooves are formed in both the contact cam surface of the fixed cam and the contact cam surface of the rotary cam, and the contact cam surface of the fixed cam is pressed against the contact cam surface of the rotary cam by the spring. When the opening / closing shaft rotates in a state where the cam groove on the contact cam surface of the fixed cam and the rotating cam engages and disengages from each other, a click torque is generated.
The biaxial hinge device in which the rotating cam through which the one opening / closing shaft is inserted and the rotating cam through which the other opening / closing shaft is inserted form an integrated part. A biaxial hinge device having two opening and closing shafts arranged in parallel for connecting the first housing and the second housing so as to be openable and closable,
One opening and closing shaft to which the first housing is fixed;
Another opening and closing shaft to which the second housing is fixed;
A coupling component that supports the one and the other opening and closing shafts in parallel and rotatably;
A first torque unit provided on the one opening / closing shaft and generating a click torque in the one opening / closing shaft when the one opening / closing shaft rotates;
A second torque unit provided on the other opening / closing shaft and generating a click torque in the other opening / closing shaft when the other opening / closing shaft rotates;
Have
The first and second torque units include a fixed cam that rotates in synchronization with the opening / closing shaft, a rotating cam that is fixed to the coupling component , and through which the opening / closing shaft is rotatably inserted, together are inserted through the opening and closing shaft, anda spring biasing toward the fixed cam such that the said fixed cam and said rotary cam comes into contact with the contact cam surface on the rotating cam,
A cam groove is formed in the contact cam surface of the fixed cam and the contact cam surface of the rotating cam, and the contact cam surface of the fixed cam is pressed against the contact cam surface of the rotating cam by the spring When the opening / closing shaft rotates, the cam groove on the contact cam surface of the fixed cam and the rotating cam engages and disengages to generate click torque,
The cam grooves of the fixed cam and the rotating cam in the second torque unit are formed in the second torque unit so that click torque is generated at a rotation angle different from that of the first torque unit. The fixed cam and the cam groove of the rotating cam are formed so as to have different phases,
The biaxial hinge device in which the rotating cam through which the one opening / closing shaft is inserted and the rotating cam through which the other opening / closing shaft is inserted form an integrated part. The biaxial hinge device according to claim 1, wherein the rotation stopper portion is provided on one of the one opening / closing shaft and the other opening / closing shaft. 2. The biaxial hinge device according to claim 1, wherein the rotation stopper portion is provided on both the one opening / closing shaft and the other opening / closing shaft. The rotation stopper part provided in the said one opening-and-closing axis | shaft and the rotation stopper part provided in the said other opening-and-closing axis | shaft are formed so that the controlled rotation angle may become the same. Shaft type hinge device. 7. The biaxial shaft according to claim 1, 5 or 6, wherein a body stopper portion through which the one opening / closing shaft is inserted and a body stopper portion through which the other opening / closing shaft is inserted form an integrated part. Type hinge device. The biaxial hinge device according to any one of claims 1 to 7, wherein both surfaces of the rotating cam are contact cam surfaces, and the fixed cam is disposed so as to face both surfaces of the rotating cam. . The biaxial hinge device according to any one of claims 1 to 8, further comprising a hinge case having an inner periphery having the same shape as an outer periphery of the rotary cam, wherein the torque unit is accommodated in the hinge case. . The junction part with a 1st housing | casing is formed in the both ends of said one opening-and-closing axis | shaft, and the junction part with a 2nd housing | casing is formed in the both ends of said other opening-and-closing axis | shaft. A biaxial hinge device according to claim 1. The biaxial hinge device according to any one of claims 1 to 10, wherein a fastening hole for a fastening part to be fastened to a device housing or a case is formed in the rotating cam.

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