JP2012159095A5 - - Google Patents

Description

Biaxial hinge and electronic device provided with the biaxial hinge

  The present invention relates to a biaxial hinge for connecting a device main body and a display unit in a small electronic device such as a video camera and a digital camera, and a small electronic device such as a car navigation apparatus, and the biaxial hinge. The present invention relates to an electronic device provided.

  In a small electronic device such as a camera device such as a video camera or a digital camera or a car navigation device, a display unit is known to be attached to the device body so as to be rotatable in two directions via a biaxial hinge. . As this biaxial hinge, the display unit can be opened and closed in the vertical direction relative to the device main body, that is, the undulation can be rotated around the axis of the first hinge shaft extending in the width direction of the device main body. And a second hinge shaft extending in a direction orthogonal to the first hinge shaft relative to the device body when the display portion is opened to 90 ° with respect to the device body about the first hinge shaft. A biaxial hinge that can be rotated around the axis is proposed (for example, see Patent Document 1).

JP 2007-271063 A

  In the biaxial hinge described in Patent Document 1, a first support member is attached to a pair of attachment members (brackets) attached to a device body via a first hinge shaft (rotating shaft). A second support member that rotatably supports the display unit is attached to the first hinge shaft via a second hinge shaft that is attached in a direction perpendicular to the first hinge shaft. In particular, when attaching the fixed cam to the first hinge shaft, the outer shape of the shaft portion of the first hinge shaft was cut in the axial direction. It took a long time, and this was one of the causes of the cost increase of the biaxial hinge and the electronic device using the biaxial hinge.

  The object of the present invention is to reduce the cost by simplifying the configuration, particularly by devising the engagement means between the first hinge shaft of the first rotation control means and the fixed cam whose rotation is restricted by the first hinge shaft. In addition, it is an object of the present invention to provide a biaxial hinge that can secure a necessary strength and can be reduced in size, and an electronic device including the biaxial hinge.

  In order to achieve the first object, a biaxial hinge according to the present invention has an attachment portion and a bearing portion raised from the attachment portion, and includes a first housing and a second housing constituting an electronic apparatus. A pair of mounting members, each of which is attached to the body at a predetermined interval, a support plate portion, and a pair of pivot portions bent from both ends of the support plate portion. A first support member rotatably attached to each bearing portion, and a predetermined range in a direction perpendicular to the rotation direction of the first support member to the support plate portion of the first support member. And a second support member that is rotatably attached to the other housing of the first housing and the second housing, and the bearing portion of the pair of mounting members includes the second support member. An elastic means is provided between the first hinge shaft for connecting the pivoting portion of the first support member and the pivoting portion. Provided with a first rotation control means comprising a fixed cam and a rotating cam, and between the support plate portion and the second hinge shaft for connecting the second support member to the support plate portion of the first support member, A second rotation control means comprising a click spring plate and a click plate, the first hinge shaft being fixed to a bearing portion of the one of the mounting members, and a flange portion of the first hinge shaft and the fixing cam; It is characterized by engaging.

  In this case, according to the present invention, each of the mounting members can be further provided with a reinforcing portion that is bent from the mounting portion and is further bent and overlapped with the bearing portion.

  In the present invention, the fixed cam of the first rotation control means is positioned on the flange portion side of the first hinge shaft, and an engagement recess for engaging with the flange portion is provided. An engagement portion that is slidably engaged with the first support member is provided.

  The present invention is further characterized in that a cam portion is provided integrally with the flange portion of the first hinge shaft.

  In the present invention, the click spring plate of the second rotation control means is fixed to a support plate portion of the second support member, and the click plate is fixed to the second hinge shaft. To do.

  In the present invention, the second support member has a reinforcing piece bent from the support plate portion, and engages with a stopper portion provided on the click plate, thereby restricting a rotation range of the second support member. It is characterized by that.

  The present invention is further characterized in that the first housing is a device main body or a display unit, and the first housing is a display unit or a device main body.

  The present invention further provides that the second rotation control means is fixedly attached to one end of the second support member and rotated between the first support member and a support piece formed by bending from the first support member. A second hinge shaft that can be attached, a click spring plate that is rotatably inserted into the second hinge shaft and locked to the first support member, and overlaps with the click spring plate and rotates to the second hinge shaft. A click plate regulated and attached, a stopper washer over the click plate and attached to the second hinge shaft, and a rotation restricted and attached to the second hinge shaft, sandwiching the support piece It is characterized by comprising a pair of first and second friction plates provided.

  In the present invention, a cover member is further attached to the first support member.

  The present invention is characterized in that the biaxial hinge is provided between a device main body of an electronic device and a display unit attached to the device main body so as to be opened and closed.

As described above, the present invention has a mounting portion and a bearing portion raised from the mounting portion, and the first housing and the second housing constituting the electronic apparatus are provided in any one of the housings. It has a pair of attachment members which attached attachment parts at a predetermined interval, a support plate part, and a pair of shaft attachment parts bent from both ends of the support plate part. A first support member rotatably attached to the first support member, and the first support member attached to the support plate portion of the support first holding member so as to be rotatable within a predetermined range in a direction orthogonal to the rotation direction of the first support member. A second support member attached to the other case of the case and the second case, and connecting the pivoting portion of the first support member to one bearing portion of the pair of attachment members Between a fixed cam and a rotating cam in which an elastic means is applied between the first hinge shaft and the shaft attachment portion. And a first spring control means comprising a click spring plate and a click plate between a second hinge shaft for connecting the second support member to the support plate portion of the first support member and the support plate portion. the second rotation control means is provided, said first hinge shaft with is fixed to the bearing portion of the one of the mounting member, by a kite engaged with said fixed cam and the flange portion of the first hinge shaft, parts A small-sized biaxial hinge can be provided at low cost with a small number of points.

  Further, by using the biaxial hinge configured as described above, it is possible to reduce the size and cost of electronic devices such as video cameras.

It is a perspective view of a video camera using a biaxial hinge according to the present invention. It is a disassembled perspective view of the part of the biaxial hinge which concerns on this invention. It is a perspective view of the state which assembled the biaxial hinge concerning the present invention. It is a top view of the biaxial hinge which concerns on FIG. FIG. 4 is a rear view of the biaxial hinge according to FIG. 3. FIG. 4 is a side view of the biaxial hinge according to FIG. 3 in a state in which a display unit is closed with respect to a device main body. FIG. 3 is a side view of the biaxial hinge according to the present invention in a state in which a display unit is opened with respect to a device main body. In the biaxial hinge according to the present invention, it is a plan view of a state in which the display unit is rotated by 90 ° with respect to the device body. The attachment member 5 of the biaxial hinge which concerns on this invention is shown, (a) is the perspective view, (b) is the side view. It is a perspective view of the 1st supporting member of the biaxial hinge concerning the present invention. 1 is a perspective view of a fixed cam 10 and a rotating cam 11 of a biaxial hinge according to the present invention. It is a perspective view of the click spring plate of the biaxial hinge which concerns on this invention. It is a perspective view of a stationary cam biaxial hinge shown in Fig. It is a perspective view of a rotating cam of the biaxial hinge shown in Fig. It is a perspective view of the other Example of the biaxial hinge which concerns on this invention. FIG. 16 is an exploded perspective view of the biaxial hinge shown in FIG. 15 . It is a cross-sectional view of a portion of the second rotation control means of the two-axis hinge of FIG. 15. It is a perspective view of the first support member of the biaxial hinge shown in FIG. 15. It is a perspective view of a cover member of the biaxial hinge shown in FIG. 15.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode of a biaxial hinge and an electronic apparatus according to the present invention will be described in detail based on the accompanying drawings. The electronic device is not particularly limited, and for example, a camera device such as a video camera or a digital camera is typical, but other than this, a small electronic device such as a car navigation device can be cited. In the present specification, the first housing described in the claims or the summary of the invention refers to the device main body 2a, and the second housing refers to the display unit. This is a name for convenience, and the device main body may be referred to as a second housing, and the display unit may be referred to as a first housing. Further, the display unit is not limited to this, and includes a lid and the like, which may be referred to as a lid or simply an opening / closing body. In this case, the lid body or the opening / closing body serves as the first housing or the second housing.

FIG. 1 is a diagram showing a video camera as an example of an electronic apparatus embodying the present invention. 2-10 is a figure which shows an example of the biaxial hinge based on this invention. The biaxial hinge 1 according to the present invention is, for example, attached to the side of the device body 2a of the video camera 2 so that the display unit 3 can be opened and closed, and there is no limitation on the attachment position. In the example it is attached to the A view of the portion indicated by the two-dot chain line in the side of the main body.

  According to the drawing, the reference symbols 4 and 5 indicate a pair of mounting members made by pressing a metal plate such as SUS. The mounting members 4 and 5 have the same configuration, and include mounting portions 4a and 5a and bearing portions 4b and 5b bent from one end of the mounting portions 4a and 5a. In particular, as shown in FIGS. 2 and 9, the reinforcing portions 4c and 5c are bent from the other ends of the mounting portions 4a and 5a, and further bent outward from the bearing portions 4b and 5b. By superimposing them, they are reinforced. The side overlapped with the bearing portions 4b and 5b may be inside the bearing portions 4b and 5b, and is not particularly limited. The mounting portions 4a and 5a and the reinforcing portions 4c and 5c are provided with mounting holes 4d, 4d and 4e and mounting holes 5d, 5d and 5e, respectively, and the bearing portions 4b and 5b and the portions overlapping the bearing portions 4b and 5b. The reinforcing portions 4c and 5c are provided with a circular bearing hole 4f and a substantially elliptical deformed bearing hole 5f with a common shaft core. The mounting members 4 and 5 have the same configuration, but the shapes of the bearing holes 4f and 5f are different. Furthermore, one of the mounting holes 4d, 4d and one of 5d, 5d have a substantially elliptical shape.

As shown in FIGS. 1 , 6 and 7 , each of the mounting members 4 and 5 has a mounting screw (not shown) attached to the mounting portion 2b of the apparatus main body 2a, and the mounting portions 4a and 5a and the reinforcing portions 4c and 5c. Although it is used and attached, it is also possible to attach to the display unit 3 side.

  What is indicated by an instruction symbol 6 is a first support member made by pressing a metal plate such as SUS. The first support member 6 includes an elongated support plate portion 6a, shaft mounting portions 6b and 6b bent from both side portions of the support plate portion 6a, and a contact formed by bending in the longitudinal direction of the support plate portion 6a. The support plate portion 6a is provided with a circular bearing hole 6d at the center thereof, a pair of rectangular locking holes 6e and 6e on both sides of the bearing hole 6d, and the locking hole 6e. , 6e are provided with a pair of mounting holes 6f, 6f for attaching a cover member (not shown), and the shaft mounting portions 6b, 6b are provided with circular bearing holes 6g, 6g, each having a common shaft core. ing. Further, the contact plate portion 6c is provided with a pair of stopper holes 6h, 6h at a substantially central portion thereof and an elongated guide hole 6k at one side portion side. Furthermore, stopper pieces 6m and 6m are provided so as to protrude outward from the contact plate portion 6c.

  One pivoting portion 6b of the first support member 6 is rotatably attached to the bearing portion 4b of the mounting member 4 via a hinge pin 7 with a flange portion 7a, and the other pivoting portion 6b is a deformed flange. It is rotatably attached to the bearing portion 5b of the other attachment member 5 via a first hinge shaft 8 with a portion 8a. That is, after the shaft portion 7b of the hinge pin 7 is inserted into the bearing holes 4f and 6g, the end portions thereof are caulked so as to be pivotally connected. The other shaft mounting portion 6b is connected to the other mounting member 5 through a first hinge shaft 8 inserted into the bearing holes 5f and 6g. And the deformation | transformation part 8b is provided in the edge part of the 1st hinge shaft 8, This deformation | transformation part 8b engages with the deformation | transformation bearing hole 5f provided in the bearing part 5b of the attachment member 5, and crimps the edge part. Is attached to the attachment member 5 in a non-rotating manner.

  A first rotation control means 9 is provided between the first hinge shaft 8 and the shaft attachment portion 6 b of the support member 6. The first rotation control means 9 has a first cam portion 10a on one side surface, and the other end surface while the shaft portion 8c of the first hinge shaft 8 is inserted into the insertion hole 10b provided in the central portion axial direction. The engaging recess 10c provided on the fixed cam 10 is engaged with the deformed flange portion 8a of the first hinge shaft 8, and the second cam portion 11a is provided on the surface of the fixed cam 10 facing the first cam portion 10a. The shaft portion 8c of the first hinge shaft 8 is inserted into the insertion hole 11b provided in the central portion axial direction, and the engaging portion 11c provided on the side portion is provided in the contact plate portion 6c of the support member 6. A rotating cam 11 that is slidably engaged with the provided guide hole 6k and an elastic ring wound around the outer periphery of the first hinge shaft 8 and between one pivotal portion 6b of the support member 6 and the rotating cam 11. A bullet consisting of a coil spring installed It is composed of a unit 12. The fixed cam 10 may be provided integrally with the deformed flange portion of the first hinge shaft 8. As shown in FIGS. 13 and 14, gate setting surfaces 10 f and 11 f may be provided on the respective sides of the fixed cam 10 and the rotating cam 11.

  Next, what is indicated by an instruction symbol 13 is a second support member made by pressing a metal plate such as SUS, and has an elongated plate shape. A deformation mounting hole 13a is provided at a substantially central portion of the second support member 13, and boss portions 13b and 13b are provided at both end portions by boss processing. Mounting holes 13c and 13c of the display unit 3 are provided inside the bosses 13b and 13b, and a reinforcing piece 13d is bent from an end in the longitudinal direction.

  The second support member 13 is attached to the first support member 6 via the second hinge shaft 14 so as to be rotatable in a direction orthogonal to the rotation direction of the first support member 6. That is, the second support member 13 is configured to insert a deformation attachment portion 14a provided at one end portion of the second hinge shaft 14 rotatably attached to the bearing hole 6d of the first support member 6 into the deformation attachment hole 13a. After being combined, the end portion is caulked to be attached to the first support member 6 so as to be rotatable. The second hinge shaft 14 includes a large-diameter shaft portion 14b, a small-diameter shaft portion 14c, and a deformed small-diameter portion 14d following the deformation attachment portion 14a.

A second rotation control means 15 is provided between the second hinge shaft 14 and the support plate portion 6 a of the first support member 6 . The second rotation control means 15 engages with the lower surface side of the second support member 13 while rotatably inserting the deformed small diameter portion 14d of the second hinge shaft 14 through the insertion hole 16a provided in the axial direction of the center portion. The click spring plate 16 is fixedly attached, and the click plate 17 is provided to be fixed to the deformed small-diameter portion 14 d of the second hinge shaft 14 so as to overlap the click spring plate 16. In other words, the click spring plate 16 is formed by pressing a metal plate made of spring steel, for example, and then quenching, and has elasticity, and as shown in FIG. Has the structure. Rotating with respect to the first support member 6 by engaging the locking pieces 16b, 16b, which are bent at opposite positions of the both ends, with the locking holes 6e, 6e provided on the first support member 6 side. It is regulated and rotates together with the first support member 6. The click spring plate 16 is further provided with a pair of click protrusions 16c and 16c on the outer periphery thereof. Further, on the click plate 17 side, cutout portions 17b, 17b and a stopper portion 17c that engage with the click convex portions 16c, 16c are provided. The click plate 17 is also configured by, for example, pressing a metal plate made of spring steel and quenching, and has elasticity. The click plate 17 is inserted into a deformed small diameter portion 14d provided at the end of the second hinge shaft 14 with a deformed mounting hole 17a provided in the axial direction of the center portion thereof, and a predetermined torque is generated in the deformed small diameter portion 14d. By caulking in such a manner, the rotation with respect to the second hinge shaft 14 is restricted, so that the second hinge shaft rotates and is further in pressure contact with the click spring plate 16. The second rotation control means 15 may be provided with a notch or a recess on the click spring plate 16 side and a protrusion on the click plate 17 side. The end of the display unit 3 of the video camera 2 is attached to the second support member 13.

  Next, operations of the biaxial hinge 1 according to the present invention and the video camera 2 as an example of an electronic apparatus using the biaxial hinge 1 will be described.

  In the closed state where the device main body 2a of the video camera 2 and the display unit 3 overlap each other and the rotation angle of the first support member 6 is 0 °, the convex portion 11d of the rotary cam 11 of the first rotation control means 9 is provided. 11d and the convex portions 10d and 10d of the fixed cam 10 are engaged with the concave portions 11e, 11e, 10e and 10e at the inclined portions. In this engaged state, the rotating cam 11 is fixed to the fixed cam 10 by the elastic means 12. It is locked by being pressed to the side. Of course, in addition to the first rotation control means 9, other lock means may be provided here. Note that the positional relationship between the mounting member 4 of the biaxial hinge 1 and the first support member 6 and the second support member 13 in the closed state with respect to the device main body 2a of the display unit 3 is shown in FIG. Is in a state.

On the other hand, also in the second rotation control means 15, when the rotation angle of the second support member 13 is 0 °, the notches 17 b and 17 b of the click plate 17 engage with the click protrusions 16 c and 16 c of the click spring plate 16. And the click plate 17 is in a pressure contact state with the click spring plate 16, so that the closed state at a rotation angle of 0 ° is maintained. Of course, another lock means may be provided here in addition to the second rotation control means 15. Further, the second rotation control means 15 may be provided with friction means such as a friction plate in addition to the click stop function. However, according to the present invention, the click spring plate 16 and the click plate 17 are in pressure contact with each other and slide against each other, so that friction torque is also generated here. The second rotation control means 15 does not rotate in the direction orthogonal to the first hinge shaft 8 when the display unit 3 is closed with respect to the device main body 2a.

  When the display unit 3 is used and a finger is placed on the tip side of the display unit 3 to open the device body 2a outward, the display unit 3 rotates around the hinge pin 7 and the first hinge shaft 8 as a fulcrum. Open. At this time, in the display unit 3, the convex portions 11d and 11d of the rotating cam 11 of the first rotation control means 9 ride on the convex portions 10d and 10d of the fixed cam 10 against the pressing force of the elastic means 12. At first, there is resistance, but when a predetermined opening angle (about 8 ° in the embodiment) is exceeded, the convex portions 11d and 11d of the rotating cam 11 again fall into the concave portions 10e and 10e of the fixed cam 10, so that the elastic means A rotational torque is generated by the pressing force of 12, and the display unit 3 is automatically opened. When the opening angle reaches 90 °, the stopper piece 6m of the first support member 6 comes into contact with the side portions of the mounting members 4 and 5 and stops at the opening angle 90 ° as shown in FIG. The positional relationship among the mounting member 4 of the biaxial hinge 1 in this state, the first support member 6 and the second support member 13 is as shown in FIG.

Subsequently, when the display unit 3 is rotated to one side in a direction orthogonal to the hinge pins 7 and the first hinge shaft 8, the display unit 3 is 90 degrees toward the lower surface of the device body 2a, It can be rotated up to 180 ° toward the upper surface. That is, when the display unit 3 is rotated counterclockwise, the second hinge shaft 14 rotates together with the click plate 17 fixed to the second hinge shaft 14. At this time, the notches 17b and 17b are disengaged from the click protrusions 16c and 16c, and a friction torque is generated between the click plate 17 and the click spring plate 16. Accordingly, the display unit 3 is opened in a free stop, that is, in a free stop state from 0 ° to 90 ° toward the lower surface of the device main body 2a and further to 180 ° toward the upper surface of the device main body 2a. When it is opened to 180 °, one end of the stopper portion 17c of the click plate 17 is stopped by engaging with a stopper hole 6h provided in the first support member 6, and cannot be rotated any further. This in turn from all open state rotates the display unit 3 in the clockwise direction, the display unit 3 is closed by rotating the free stop clockwise, the stopper portion 17c is engaged with another stopper hole 6h Will rotate to the 0 ° position. In addition, the state which the display part 3 rotated 90 degrees to the direction orthogonal to the 1st hinge shaft 8 with respect to the apparatus main body 2a is shown in FIG.

  As described above, when the display unit 3 opened 90 degrees outward with respect to the device main body 2a is closed to return it to the original closed state, the display unit 3 that is initially locked in this state is Since the convex portions 11d and 11d of the rotating cam 11 of the first rotation control means 9 and the convex portions 10d and 10d of the fixed cam 10 ride on each other against the pressing force of the elastic means 12, a slight resistance is encountered. The projections 11d, 11d, 10d, and 10d are closed only by the friction torque, and are automatically closed by dropping into the recesses 11e, 11e, 10e, and 10e from near the closing angle of 8 °. 11d, 11d, 10d, and 10d and the recesses 11e, 11e, 10e, and 10e are brought into a locked state at a closing angle of 0 ° where the respective inclined surfaces engage with each other.

In this way, the display unit 3 is opened and closed 90 degrees outward with respect to the device main body 2a. Further, in the state opened to 90 °, 90 ° toward the lower surface of the device main body 2a with the second hinge shaft 14 as a fulcrum in a direction orthogonal to the hinge pin 7 and the hinge shaft 8 of the first rotation control means, the device main body 2a since each towards the top 180 ° can be returned to the rotating original position in the free stop, a display unit 3 attached to the second hinge shaft 14 rotates with respect to the apparatus body 2a together with the second hinge shaft 14 Is.

  15 to 19 show another embodiment of the biaxial hinge according to the present invention. According to the drawing, the biaxial hinge 19 of the second embodiment is different from the first embodiment in the configuration of the second rotation control means and the point that the cover member is provided. Other configurations and functions are the same as those in the first embodiment. It is almost the same. Accordingly, the same reference symbols as those in the first embodiment have been described in the first embodiment, and the description thereof will be omitted.

According to the drawing, the second rotation control means 20 according to the second embodiment fixes the second support member 22 to one end, penetrates the first support member 21 rotatably , and A second hinge shaft 24 rotatably supported by a support piece 23 bent from one end, and click friction means provided between the second hinge shaft 24 and the first support member 21 and the support piece 23. 25.

The first support member 21 includes an elongated support plate portion 21a, shaft mounting portions 21b and 21b bent from both side portions of the support plate portion 21a, and a contact formed by bending in the longitudinal direction of the support plate portion 21a. The support plate portion 21a is provided with a circular bearing hole 21d at the center thereof, a pair of rectangular locking holes 21e and 21e on both sides of the bearing hole 21d, and the locking hole 21e. A pair of mounting holes 21f, 21f for mounting the cover member 32 with mounting screws ( not shown) are provided on both sides of 21e, 21e, and circular bearing holes 21g, 21g are common to the shaft mounting portions 21b, 21b, respectively. Is provided. Further, the contact plate portion 21c is provided with a pair of stopper holes 21h and 21h at a substantially central portion thereof and an elongated guide hole 21k at one side portion side. Furthermore, stopper pieces 21m and 21m are provided to protrude outward from the contact plate portion 21c .

  The second hinge shaft 24 has a deformation mounting portion 24a at one end thereof, and the deformation mounting portion 24a is inserted into a deformation mounting hole 22a provided in the second support member 22 and fixed by caulking the exposed end portion. It is. The second hinge shaft 24 has a circular shaft portion 24b following the deformation mounting portion 24a. Further, following the circular shaft portion 24b, the small circular shaft portion 24c, the large deformation shaft portion 24d, and the small deformation shaft portion 24e. Is provided. Then, the adjustment plate 26, the click spring plate 27, the click plate 28, the stopper washer 29, the first friction plate 30, the support piece 23, and the second friction plate 31 that constitute the click friction means 25 on the second hinge shaft 24. The second hinge shaft 24 is attached by being inserted through the circular insertion holes 26a, 27a, 23a and the modified insertion holes 28a, 29a, 30a, 31a.

That is, the adjustment plate 26 is made of, for example, SUS, and has locking grooves 26b and 26b at both ends thereof. The small circular shaft portion 24c of the second hinge shaft 24 is rotated to the circular insertion hole 26a provided at the center portion thereof. The click spring plate 27 is formed by pressing a metal plate made of spring steel, for example, and then quenching, and has elasticity and a substantially arcuate curved configuration. A small circular shaft portion 24c of the second hinge shaft 24 is rotatably inserted into a circular insertion hole 27a provided in the center portion. The click spring plate 27 has locking pieces 27b and 27b that are bent at opposite positions on both ends, and locking holes provided on the locking grooves 26b and 26b of the adjustment plate 26 and the first support member 21 side. By engaging with 21 e and 21 e, the rotation of the first support member 21 is restricted, and the first support member 21 is rotated. The click spring plate 27 is further provided with a pair of click protrusions 27c and 27c on the outer periphery thereof. The click plate 28 is also configured by, for example, pressing a metal plate made of spring steel and then quenching, and has elasticity. In this click plate 28, a deformation insertion hole 28a provided in the axial direction of the center portion is inserted into a large deformation shaft portion 24d provided at the end of the second hinge shaft 24, and concave portions 28b and 28b are provided at opposing positions on the outer periphery thereof. Is provided. Further, the click plate 28 is provided with a stopper portion 28c on one side of the outer periphery thereof. A stopper washer 29 made of, for example, SUS, which is provided on the outer periphery of the stopper plate 29b so as to overlap the click plate 28, allows the large deformation shaft portion 24d of the second hinge shaft 24 to be inserted into the deformation insertion hole 29a. The first friction plate 30 and the second friction plate 31 are both made of, for example, SUS, and the small deformation shaft portion 24e of the second hinge shaft 24 is inserted into the deformation insertion holes 30a and 31a with the support piece 23 and the cover member 32 interposed therebetween. I am letting. Then, the click spring plate 27 is squeezed so that a predetermined torque is generated at the end of the small deformation shaft portion 24 e protruding from the second friction plate 31 of the second hinge shaft 24. A pressure contact force is created between 27 and the click plate 28 and between the support piece 23, the first friction plate 30 and the second friction plate 31. Further, each of the first and second friction plates 30 and 31 is provided with a small hole for storing a lubricating oil or concave portions 30b and 31b.

  Further, a cover member 32 that covers the first rotation control means 9 and the second rotation control means 20 is attached to the first support member 21 with an attachment screw (not shown). The cover member 32 has an angle cross section, and is provided with a square hole 32a on one surface and an insertion hole 32b on the other surface. For example, mounting pieces 32c and 32c attached to the first support member 21 with mounting screws project. It is installed. A boss portion may be provided on the attachment pieces 32c and 32c, and the boss portion may be fitted into the attachment holes 21f and 21f.

Therefore, when, for example, a display portion (not shown) attached to the second support member 22 is rotated, the second hinge shaft 24 rotates together, and the stopper portion 29b of the stopper washer 29 is rotated at 0 ° and 180 ° by the click plate 28. stopper portion 28c with first stopper hole 21h formed in the contact plate portion 21c of the support member 21, engage the 21h stopped, this time, click spring plate 27 of the click protrusions 27c, 27c is click plate 28 The click is stopped by fitting into the recesses 28b, 28b. When the second hinge shaft 24 rotates, the first and second friction plates 30 and 31 that are in pressure contact with both sides of the support piece 23 generate a friction torque with the support piece 23. The adjustment plate 26 and the stopper washer 29 are for the first friction plate 30 and the second friction plate 31 to create a stable friction torque on the support piece 23 .

  And, when configured as in Example 2, since the second hinge shaft is supported at two locations of the first support member and the support piece, when operating the display unit to tilt the second shaft, Compared to the case where the second shaft is supported at one place as in the first embodiment, the second hinge shaft can be prevented from being squeezed and swung by the display unit, so that stable click friction or friction operation is performed. It is something that can be done.

  As described above, the biaxial hinge according to the present invention has a simple and inexpensive configuration with a small number of parts, and the second housing or the second housing with respect to the device body that is the first housing or the second housing. The display unit, which is one housing, is opened and closed to a predetermined opening angle with the first hinge shaft and the hinge pin as a fulcrum, and the opened display unit is orthogonal to the first hinge shaft and the hinge pin via the second hinge shaft. Since it can be rotated, it is particularly suitable for use in camera devices such as video cameras and digital cameras, car navigation devices, or mobile phones among small electronic devices.

DESCRIPTION OF SYMBOLS 1 2 axis | shaft hinge 2 Video camera 2a Apparatus main body 3 Display part 4 Attachment member 4a Attachment part 4b Bearing part 4c Reinforcement part 5 Attachment member 5a Attachment part 5b Bearing part 5c Reinforcement part 6 1st support member 6a Support plate part 6b Axis attachment part 7a flange portion 8 first hinge shaft 8a deformation flange portion 9 first rotation control means 10 fixed cam 10a first cam portion 10c engagement recess 11 rotation cam 11a second cam portion 11c engagement portion 12 elastic means 13 second support member 13d Reinforcing piece 14 Second hinge shaft 14a Deformation mounting portion 15 Second rotation control means 16 Click spring plate 17 Click plate 17c Stopper portion 19 Biaxial hinge 20 Second rotation control means 21 First support member 21a Support plate portion 21b Part 22 Second support member 23 Support piece 24 Second hinge shaft 24a Deformation attachment part 27 Clear Click spring plate 28 clicks plate 28c stopper portion 29 stopper washer 29b stopper portion 30 first friction plate 31 second friction plate 32 cover

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