JP5112925B2 - Biaxial hinge and electronic device provided with the biaxial hinge - Google Patents

Description

  The present invention relates to a camera device such as a video camera and a digital camera, a mobile device such as a mobile phone, a PDA, and a Zaurus (trademark), a small electronic device such as a laptop computer and a car navigation device, and the device body and the display device. The present invention relates to a biaxial hinge that is pivotably connected in two directions and an electronic device including the biaxial hinge.

  Camera devices such as video cameras and digital cameras, mobile devices such as mobile phones, PDAs and Zaurus (trademark), and small electronic devices such as notebook computers and car navigation devices, the display device is connected to the device body via a biaxial hinge. Some of them are attached so as to be rotatable in two directions. As this biaxial hinge, the display device can be opened and closed in the vertical direction relative to the device body, that is, the undulating rotation can be performed around the axis of the first shaft extending in the width direction of the device body. When the display device is opened up to 90 ° about the first shaft with respect to the device body, the display device is rotated around the axis of the second shaft extending in a direction perpendicular to the first shaft relative to the device body. Two-axis hinges that can be made have been proposed (see, for example, Patent Documents 1 and 2).

The biaxial hinge described in Patent Documents 1 and 2 includes a base bracket that is attached to the device body, a mounting bracket that is attached to the display device, a support bracket that is provided between the base bracket and the mounting bracket, and a base bracket. And a support bracket, and a first rotation mechanism for rotating the display device relative to the device main body about a first shaft extending in the width direction of the device main body, and a first support mechanism and a mounting bracket. A second rotating mechanism for rotating the display device relative to the device main body about a second shaft extending in a direction orthogonal to the shaft. The support bracket is formed in a substantially U-shaped cross section in which both end portions of an elongated substantially rectangular flat plate-like substrate are bent in a direction substantially orthogonal to each other. Both side portions of the support bracket are formed as support pieces, and the space between the both side portions is formed as a substrate portion. A first rotation mechanism is attached to each support piece, and a second rotation mechanism is attached to a substantially central portion in the longitudinal direction of the substrate portion. When the display device is closed (closed state), the device main body and the display device are overlapped with each other. From this state, the display device is rotated by 90 ° about the first shaft with respect to the device main body. From this state, the display device can be further rotated with respect to the device body about the second shaft.
JP 2007-16944 A JP 2006-220198 A

The biaxial hinges described in Patent Documents 1 and 2 have a problem that the manufacturing cost is high due to the large number of parts and the structure is complicated. In addition, both the supporting pieces of the supporting bracket are attached to the base bracket. The first shaft is attached, and the second shaft attached to the attachment bracket is attached to a substantially central portion in the longitudinal direction of the substrate portion of the support bracket. For this reason, when the display device is rotated with respect to the device main body via the second shaft, a force acts on the substrate portion in the direction in which the second shaft is pulled from the substrate portion, so that a tensile load is applied to the substrate portion. The hanging substrate portion tends to bend in a direction in which both ends approach each other. In order to secure the strength that can withstand this load, the thickness of the substrate portion has to be increased. Thus, when the thickness of the substrate portion is increased, there is a problem that the length of the support bracket (length in the longitudinal direction) becomes longer and the support bracket becomes larger. That is, since the support bracket is formed in a substantially U-shaped cross-section by bending both ends of the elongated substantially rectangular flat plate substrate in a direction substantially orthogonal to each other, in order to increase the thickness of the substrate portion, A thick substrate must be used, and if the support bracket is formed by bending both sides of the substrate, the length of the support bracket (length in the longitudinal direction) must be increased. There was a problem that the entire biaxial hinge was also large.

  Further, the display device can be rotated relative to the device body in the longitudinal direction relative to the first shaft as an axis, and this rotation can be performed from a closed state in which the device body and the display device overlap each other. The display device is restricted to the first rotation range up to the fully opened state. This is because, in the closed state, the display device and the device main body are in close contact with each other, and thus the range in which the display device rotates in the vertical direction about the first shaft with respect to the device main body is restricted and opened. In the state, the display device and the apparatus main body are engaged with each other, and the rotation range is restricted. That is, since the rotation range cannot be restricted due to insufficient strength with only the two-axis hinge, the display device and the device main body are provided with engaging portions that engage with each other in the open state. For this reason, there existed a problem that the whole electronic device became large sized and the structure became complicated.

  SUMMARY OF THE INVENTION A first object of the present invention is a biaxial hinge capable of reducing the number of parts and reducing the cost and securing the required strength to reduce the size, and an electronic apparatus equipped with the biaxial hinge. Is to provide. A second object of the present invention is to provide a biaxial hinge capable of sufficiently restricting the first rotation range and an electronic device including the biaxial hinge.

In order to achieve the first object, a biaxial hinge according to the present invention includes a substrate portion and a shaft support piece portion raised from the substrate portion, and includes a first casing and an electronic device constituting the electronic apparatus. A pair of base members attached to either one of the two housings at a predetermined interval; a support plate portion; and a pair of support piece portions bent from both ends of the support plate portion; A support member rotatably attached to each of the shaft support pieces via a first A shaft and a first B shaft, and a second shaft to the support plate portion of the support member. And an attachment member attached to either the first housing or the second housing so as to be rotatable in a predetermined range in a direction orthogonal to the rotation direction of the support member. the said support plate portion of the support member, across the second shaft A pair of reinforcing plates are attached to reinforce the bending strength of the first rotating range restricting means between one of the reinforcing plates and one of the first A shaft or the first B shaft, A second rotation restricting range restricting means is provided between the other one of the reinforcing plates and the second shaft.

  According to this invention, the reinforcing plate for reinforcing the bending strength of the supporting plate portion is attached to the supporting plate portion of the supporting member, so that the second housing is pivoted about the second shaft relative to the first casing. When the support member is rotated in a direction orthogonal to the direction of rotation of the support member relative to the base member, the support plate portion is bent by the reinforcing plate attached to the support plate portion even if a load due to this rotation is applied to the support plate portion. There is no. Accordingly, the cost can be reduced by reducing the number of parts, and the required strength of the support plate portion can be ensured to reduce the size.

In the biaxial hinge according to the present invention, each support piece portion of the support member is rotatably attached to at least one of the shaft support piece portions of the base member via the first rotation control means. The first rotation control means is attached in a state of being fitted to the shaft support piece portion, and is inserted into the support piece portion so that the support member can be rotated with respect to the base member. One of the first A shaft or the first B shaft to be supported, the first cam portion provided on the support piece, and the outer periphery of one of the first A shaft or the first B shaft and its shaft A first cam body that is movable in the direction and in surface contact with the first cam portion; and a first biasing means that biases the first cam body in surface contact with the first cam portion; Less of the contact surface of the first cam body and the first cam portion Is provided on at least the other of the first cam convex portion provided on one side, the contact surface of the first cam body and the first cam portion, and engages with the first cam convex portion to And a first cam recess that holds the position of the support member at a predetermined position.

Further, in the biaxial hinge according to the present invention, the attachment member is attached to the support member via a second rotation control means so as to be rotatable. The second shaft that is attached in a state of being fitted to the attachment member and that is inserted into the support plate portion and rotatably supports the support member with respect to the attachment member, and the support plate portion of the support member a second cam section provided, the with second fitted outside circumference of the shaft is movable in the axial direction of the second shaft, a second cam member to surface contact with the second cam portion, A second urging means for urging the second cam body so as to make surface contact with the second cam portion; and a second urging means provided on at least one of the contact surface of the second cam body and the second cam portion. There are few cam projections, contact surfaces of the second cam body and the second cam portions. Provided Kutomo other, it is preferable that a second cam recesses for holding the position of the mounting member with respect to the supporting member engaged with the second cam protrusion in a predetermined position.

Further, the biaxial hinge according to the present invention, before Symbol first rotation range restricting means includes a first 1A rotation range restricting portion provided on one of one of the said first 1A shaft or the 1B shaft, the first 1A It is preferable to include a 1B rotation range restriction portion that engages with the rotation range restriction portion and restricts the first rotation range of the support member with respect to the base member. The 1A rotation range restricting portion is a flange portion formed on one of the first A shaft and the first B shaft and having a substantially U-shaped outer periphery, and the 1B rotation range restricting portion is The first A rotation range restricting portion is preferably the reinforcing plate that is in sliding contact with the surface.

Further, the biaxial hinge according to the present invention, before Symbol second rotation range restricting means includes a first 2A rotation range restricting portion provided on the second shaft, and the first 2A rotation range restricting portion engages And a second B rotation range restricting portion for restricting a second rotation range of the attachment member with respect to the support member. The second A rotation range restricting portion is a second rotation range restricting convex portion provided on the second shaft, and the second B rotation range restricting portion is provided on the reinforcing plate. it is not preferred in the range restricting projection.

  An electronic apparatus according to the present invention includes the biaxial hinge according to the present invention. According to this invention, since the reinforcing plate for reinforcing the bending strength of the supporting plate portion is attached to the supporting plate portion of the supporting member as described above, the number of parts is reduced and the cost is reduced. The required strength of the support plate portion can be ensured and the size can be reduced. Further, a first rotation range restricting means is provided between the base member and the support member, and the first rotation range restricting means is provided on the first shaft. Since the first rotation range of the support member relative to the base member is restricted by engaging with the movement range restricting portion and the reinforcing plate is attached to the support member, the first rotation range can be sufficiently restricted. .

  As described above, according to the biaxial hinge and the electronic apparatus including the biaxial hinge according to the present invention, the reinforcing plate for reinforcing the bending strength of the supporting plate portion is attached to the supporting plate portion of the supporting member. Therefore, the cost can be reduced by reducing the number of parts, and the required strength of the support plate portion can be ensured to reduce the size. Further, a first rotation range restricting means is provided between the base member and the support member, and the first rotation range restricting means is provided on the first shaft. Since the first rotation range of the support member relative to the base member is restricted by engaging with the movement range restricting portion and the reinforcing plate is attached to the support member, the first rotation range can be sufficiently restricted. .

  Hereinafter, a biaxial hinge and an electronic device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram illustrating an example of an electronic apparatus in which the present invention is implemented. 2-5 is a figure which shows an example of the 1st biaxial hinge based on this invention. As shown in FIGS. 1 to 5, the first biaxial hinge 1 according to the present invention includes substrate portions 21 a and 22 a and shaft support pieces 21 b and 22 b raised from the substrate portions 21 a and 22 a. A pair of base members attached to the first housing and the first housing constituting the electronic device 10 with the substrate portions 21a and 22a at a predetermined interval, for example, the first housing. 2 (21, 22), a support plate portion 41, and a pair of support piece portions 42a and 42b bent from both end sides of the support plate portion 41. Each of the support piece portions 42a and 42b is connected to each of the shaft support pieces. The support member 4 rotatably attached to the portions 21 b and 22 b via the first shaft 5, and the support plate portion 41 of the support member 4 is orthogonal to the rotation direction of the support member 4 via the second shaft 6. The first housing and the first housing are rotatably mounted in a predetermined range in the direction. A reinforcing plate for reinforcing the bending strength of the support plate portion 41 of the support member 4 while being constituted by the other case of the case, for example, the attachment member 3 attached to the second case. 7 (7a, 7b) is attached.

  The electronic device 10 is not particularly limited, and for example, camera devices such as a video camera and a digital camera are typical, but other than this, a portable device such as a mobile phone, PDA, and Zaurus (trademark), a notebook type, and the like. A small electronic device such as a personal computer or a car navigation device may be used. In the present embodiment, a camera device will be described as an example of the electronic device 10 including the first biaxial hinge 1, but the present invention is not limited to this. The first housing is, for example, a substantially rectangular box-shaped device body 11 having an operation unit (not shown) such as a switch, a camera unit (not shown), and the like. The second housing is a substantially rectangular display device 12 having a display unit 13 such as an LCD, for example. The display unit 13 functions as a monitor for displaying captured images, and also functions as a large finder during shooting. For example, in the closed state in which the display device 12 is superimposed on one side surface of the device main body 11, the display device 12 is connected to the device main body 11 through the first biaxial hinge 1 so as to be opened and closed. Has been. For example, the base member 2 is attached to the device main body 11, and the attachment member 3 is attached to the display device 12.

  The base member 2 is, for example, a bracket attached to the device main body 11 with screws or the like, and includes, for example, a pair of a first base bracket 21 and a second base bracket 22. The first base bracket 21 and the second base bracket 22 are, for example, substantially rectangular flat plate-like substrate portions 21a and 22a attached to the device main body 11, and end portions of the substrate portions 21a and 22a facing each other are substantially orthogonal to each other. The shaft support piece portions 21b and 22b bent in the direction are formed in a substantially L-shaped cross section. The first base bracket 21 and the second base bracket 22 are formed, for example, by pressing a stainless steel metal plate. For example, the first base bracket 21 and the second base bracket 22 are spaced apart from each other by a predetermined distance so that the shaft support pieces 21b and 22b face each other in the vicinity of the front end of one side surface of the device main body 11. Installed and installed.

  The board portions 21a and 22a are provided with mounting holes 21c and 22c and mounting recesses 22d for mounting to the device main body 11 with, for example, screws. The shaft support pieces 21b and 22b are respectively provided with oval (substantially elliptical) fitting holes 23 and 24 to which the first shaft 5 is attached. One of these fitting holes 23, 24, for example, the fitting hole 23 of the first base bracket 21, is relatively long so that wiring for electrically connecting the device main body 11 and the display device 12, for example, FPC can pass therethrough. Largely formed. The base member 2 includes a pair of the first base bracket 21 and the second base bracket 22, but is not limited thereto, and may be formed by, for example, one bracket.

  The attachment member 3 is, for example, a bracket attached to the display device 12 with screws or the like, and is formed of, for example, an elongated rectangular flat plate-like attachment bracket 31. In the vicinity of both ends of the mounting bracket 31, for example, mounting holes 31a, 31b, and 31c for mounting with screws or the like are provided. A fitting hole 32 is provided at a substantially central portion in the longitudinal direction of the mounting bracket 31. The fitting hole 32 is formed in, for example, an oval shape (substantially elliptical shape) substantially the same as the size of the fitting hole 23 of the first base bracket 21. The mounting bracket 31 is formed, for example, by pressing a stainless steel metal plate. Although the base member 2 is attached to the device main body 11 and the attachment member 3 is attached to the display device 12, the base member 2 may be attached to the display device 12 and the attachment member 3 may be attached to the device main body 11. A support member 4 is provided between the base member 2 and the attachment member 3.

  The support member 4 is, for example, a support bracket 40, a support plate portion 41 to which the second shaft 6 is attached, and a plurality of support pieces that extend from the support plate portion 41 in a direction substantially orthogonal to each other and to which the first shaft 5 is attached. Part 42a, 42b. The support bracket 40 is formed in, for example, a substantially U-shaped cross-section obtained by bending both ends of an elongated, substantially rectangular flat plate-like substrate in a direction substantially perpendicular to each other, and both side portions are formed as support pieces 42a and 42b. A rectangular flat plate portion therebetween is formed as the support plate portion 41. The support bracket 40 is formed, for example, by pressing a stainless steel metal plate. In addition, although two support piece parts 42a and 42b are formed by bending both ends of the substrate, the present invention is not limited to this.

  An insertion hole 43 into which the second shaft 6 is inserted is provided at a substantially central portion in the longitudinal direction of the support plate portion 41. The insertion hole 43 is formed in a circular shape having a diameter larger than the diameter of the fitting hole 32 of the mounting bracket 31. Further, three attachment holes 44a and 44b are provided between the insertion hole 43 and both ends of the support plate portion 41, respectively. A screw groove is provided on the inner surface of two of the three mounting holes 44a and 44b. A reinforcing plate 7 is provided on the inner surface of the support plate portion 41 (the surface of the support plate portion 41 between the support piece portions 42a and 42b).

  The reinforcing plate 7 prevents the support plate portion 41 from bending, and is not particularly limited as long as the support plate portion 41 can be prevented from bending, and is, for example, a metal plate such as stainless steel or a steel plate. The reinforcing plate 7 is attached to, for example, the inner surface between the support piece portions 42a and 42b, and is an elongated rectangular flat plate substantially the same as the support plate portion 41. The insertion hole 43 of the support plate portion 41 and the vicinity thereof are provided. It consists of two reinforcing plates 7a and 7b cut out. The two reinforcing plates 7a and 7b are formed so that, for example, one end thereof is in contact with the inner surface of the support piece portions 42a and 42b and the other end portion is positioned in the vicinity of the insertion hole 43 of the support plate portion 41. Yes. The two reinforcing plates 7a and 7b have a fitting projection 7c that fits into a mounting hole 44b that is not provided with a screw groove of the support plate 41, and a mounting hole that is provided with a screw groove of the support plate 41. Opposite to 44a, two attachment holes 7d for attachment using, for example, screws 49 are provided. When the other end of one of the two reinforcing plates 7a and 7b (also referred to as the first reinforcing plate 7a) is attached to the supporting plate 41, the insertion hole of the supporting plate 41 is inserted. 43 is formed in an arc shape that is substantially coaxial with the insertion hole 43 and has a larger diameter than the insertion hole 43. At the other end of the other reinforcing plate 7b (sometimes referred to as the second reinforcing plate 7b) of the two reinforcing plates 7a and 7b, a second rotation range restricting protrusion 92 is provided to protrude. .

  The support bracket 40 includes the first base bracket 21 and the second base bracket 21 so that both support piece portions 42a and 42b face the shaft support piece portion 21b of the first base bracket 21 and the shaft support piece portion 22b of the second base bracket 22, respectively. It is arranged between the base bracket 22. A through hole into which the first shaft 5 (first A shaft 51) is inserted into the support piece portion 42a (also referred to as the first support piece portion 42a) facing the shaft support piece portion 21b of the first base bracket 21. 46 is provided. The through hole 46 is formed in a circular shape having a diameter larger than the diameter of the fitting hole 23 of the shaft support piece 21 b of the first base bracket 21. The first shaft 5 (the first B shaft 52) is inserted into the support piece portion 42b (also referred to as the second support piece portion 42b) facing the shaft support piece portion 22b of the second base bracket 22. A through hole 47 is provided. The through hole 47 is formed in a circular shape having a diameter larger than the diameter of the fitting hole 24 of the shaft support piece portion 22 b of the second base bracket 22. The shaft support piece 21b of the first base bracket 21 and the shaft support piece 22b of the second base bracket 22 and the support pieces 42a and 42b of the support bracket 40 are connected to each other by the first shaft 5 so as to be rotatable. Yes. Further, the support plate portion 41 of the support bracket 40 and the mounting bracket 31 are connected to each other by the second shaft 6 so as to be rotatable.

  The first shaft 5 includes, for example, a first A shaft 51 that rotatably connects the shaft support piece 21 b of the first base bracket 21 and the first support piece 42 a of the support bracket 40, and the second base bracket 22. The shaft support piece portion 22b and the second support piece portion 42b of the support bracket 40 include a first B shaft 52 that rotatably connects the shaft support piece portion 22b and the second support piece portion 42b of the support bracket 40. Note that the first A shaft 51 and the first B shaft 52 may be integrally formed as a single shaft. In this sense, in this specification, both may be referred to as the first shaft.

  The first A shaft 51 is formed in a cylindrical shape whose outer diameter can be inserted into the through hole 46 of the first support piece 42 a of the support bracket 40. The first A shaft 51 is formed with an inner diameter through which a wiring, for example, an FPC, for electrically connecting the device main body 11 and the display device 12 can be passed. At one end of the first A shaft 51, a flange portion 51a having a diameter larger than the diameter of the through hole 46 of the first support piece portion 42a is provided. The other end of the first A shaft 51 is provided with an oval (substantially oval) fitting portion 51b that can be fitted into the fitting hole 23 of the shaft support piece 21b of the first base bracket 21. Yes. The fitting portion 51b is inserted into the through hole 46 from the inner surface of the first support piece portion 42a of the support bracket 40 and passes through the sleeve 54, and then the fitting hole 23 of the shaft support piece portion 21b of the first base bracket 21. To fit. By caulking the tip end of the fitting portion 51b protruding from the fitting hole 23, the flange portion 51a of the first A shaft 51 is in contact with the inner surface of the first support piece portion 42a. The first support piece 42a of the support bracket 40 is rotatably connected. A sleeve 54 is provided on the outer periphery of the first A shaft 51 between the first support piece 42 a of the support bracket 40 and the shaft support piece 21 b of the first base bracket 21.

The first B shaft 52 is formed in an oval shape (substantially elliptical) having an outer diameter that can be inserted into the through hole 47 of the second support piece portion 42 b of the support bracket 40. At one end of the first B shaft 52, a flange portion 52a having a diameter larger than the diameter of the through hole 47 of the second support piece portion 42b is provided. The flange portion 52a is formed with, for example, substantially the same diameter as the flange portion 51a of the first A shaft 51. Moreover, the location located in the through-hole 47 of the 2nd support piece part 42b of the support bracket 40 in the vicinity of the one end part of the 1B shaft 52 is formed in circular shape. Further, the other end portion of the first B shaft 52 is provided with an oval (substantially elliptical) fitting portion 52b that can be fitted into the fitting hole 24 of the shaft support piece portion 22b of the second base bracket 22. Yes. The fitting portion 52b is inserted into the through hole 47 from the inner surface of the second support piece portion 42b of the support bracket 40, and is fitted into the fitting hole 24 of the shaft support piece portion 22b of the second base bracket 22. By caulking the tip end of the fitting portion 52b protruding from the fitting hole 24, the flange portion 52a of the first B shaft 52 is in contact with the inner surface of the second support piece portion 42b. The 2nd support piece part 42b of the support bracket 40 is connected so that rotation is possible. Therefore, the support member 4 is rotatably supported by the first base bracket 21 and the second base bracket 22 via the first A shaft 51 and the first B shaft 52. You may provide the 1st rotation control means 8 which controls rotation of the supporting member 4 with respect to the base member 2 (the 1st base bracket 21 and the 2nd base bracket 22).

The first rotation control means 8 may be provided both between the first base bracket 21 and the support member 4, between the second base bracket 22 and the support member 4, or may be provided on either one of them. For example, it is provided between the second base bracket 22 and the support member 4. First rotation control means 8, for example, the first 1B shaft 52, the first cam portion 81 provided on the support bracket 40, about the axis of the 1B shaft 52 fitted on the outer periphery of the 1B shaft 52 The first cam body 82 can be moved in the axial direction of the first B shaft 52 without rotating in the first direction, and in surface contact with the first cam portion 81, and the first cam body 82 can be in surface contact with the first cam portion 81. The first urging means 83 for urging in this way, the first cam protrusion 87 provided on at least one of the contact surface of the first cam body 82 and the first cam portion 81, and the contact surface of the first cam body 82 And a first cam recess 86 which is provided on at least the other of the first cam portion 81 and engages with the first cam protrusion 87 to hold the position of the support member 4 with respect to the base member 2 at a predetermined position. Yes. The outer periphery of the first cam body 82 and the first urging means 83 is covered with a sleeve 84.

  The first cam portion 81 is provided around the through hole 47 on the outer surface of the second support piece portion 42 b of the support bracket 40, for example. For example, two first cam recesses 86 are provided in the first cam portion 81 at intervals of 180 ° in the circumferential direction.

  The first cam body 82 rotates together with the first B shaft 52, is movable in the axial direction of the first B shaft 52, and is in surface contact with the first cam portion 81. The first cam body 82 is formed in a disc shape, for example. An oval (substantially elliptical) insertion hole 82b is provided at the center of the first cam body 82 so as to pass through the first camshaft 52 in a fitted state. A first cam convex portion 87 that engages with the first cam concave portion 86 of the first cam portion 81 is provided on the surface of the first cam body 82 on the first cam portion 81 side (sometimes referred to as a cam surface). Two are provided at intervals of 180 ° in the direction. The first cam convex portion 87 is formed in a substantially trapezoidal shape, for example, and the first cam concave portion 86 is formed in a substantially trapezoidal shape into which the first cam convex portion 87 is fitted, for example.

  The first urging means 83 is not particularly limited as long as it urges the first cam body 82 to be pressed against the first cam portion 81, and may be a compression spring, a spring washer, or other urging member. The disc spring 83. The number of disc springs 83 is not particularly limited, and is two, for example, and may be three or more. The first cam body 82 is biased by the biasing force of the disc spring 83 by caulking the end of the fitting portion 52b of the first B shaft 52 that passes through the disc spring 83 and protrudes from the fitting hole 24 of the shaft support piece portion 22b. Is pressed against the first cam portion 81 (the second support piece portion 42b of the support bracket 40), and friction is generated between the second support piece portion 42b of the support bracket 40 and the second base bracket 22, The 2nd base bracket 22 and the 2nd support piece part 42b of support bracket 40 are connected so that rotation is possible. Accordingly, the fitting hole 23 of the first base bracket 21, the first A shaft 51, the through hole 46 of the first support piece portion 42a of the support bracket 40, the through hole 47 of the second support piece portion 42b, the first B shaft 52, and The fitting holes 24 of the second base bracket 22 are arranged substantially coaxially, and the support member 4 (support bracket 40) is the first with respect to the base member 2 (the pair of first base bracket 21 and second base bracket 22). The display device 12 is configured to rotate about the first A shaft 51 and the first B shaft 52 with respect to the device body 11.

  For example, the first cam convex portion 87 and the first cam concave portion 86 may be configured such that the display device 12 rotates with respect to the device body 11 at a rotation angle of 0 to 180 ° about the first A shaft 51 and the first B shaft 52 (first rotation). In the case of rotation within a range, the first rotation angle is 0 ° and 180 °, and the display device 12 is held at that position with respect to the device main body 11 and 10 to 170 °. In this first rotation range, friction is generated and a free stop state is established. That is, the first cam convex portion 87 and the first cam concave portion 86 are such that the display device 12 is completely engaged with the device main body 11 at the first rotation angles of 0 ° and 180 °, or In a state in which the first rotation angle of 0 ° and 180 ° is not completely engaged, for example, the engagement starts from the first rotation angle of 10 ° and 170 ° and becomes −10 ° and 190 °. It is formed so that each can be completely engaged at an angle. Further, the first cam convex portion 87 and the first cam concave portion 86 are formed, for example, such that the protruding surface 87a of the first cam convex portion 87 and the cam surface 81a of the first cam portion 81 other than the first cam concave portion 86 are formed in a plane. Then, the protruding surface 87a of the first cam convex portion 87 and the cam surface 81a of the first cam portion 81 are brought into surface contact with each other in a first rotation range of 10 to 170 ° to generate friction, thereby causing a free stop state. It is formed to become. As a result, in the first rotation range of 10 to 170 °, friction is generated that can form a free stop state between the second base bracket 22 and the support bracket 40, that is, between the device body 11 and the display device 12. To do.

In the present invention, 0 ° includes approximately 0 °, 10 ° includes approximately 10 °, 90 ° includes approximately 90 °, and 170 ° includes approximately 170 °. , 180 ° includes approximately 180 °. Further, the first rotation angle in the present invention, be put that angles in the longitudinal direction of the display device 12 for a side of the apparatus body 11 (a direction to rotate the first 1A shaft 51 and the 1B shaft 52 in the axial) For example, when the angle is 0 °, the device main body 11 and the display device 12 overlap each other, and when the angle is 180 °, the display device 12 is opened forward with respect to the device main body 11. Further, the first cam convex portion 87 and the first cam concave portion 86 hold the display device 12 at the position with respect to the device main body 11 at a first rotation angle of 0 ° and 180 °, and 10 to 170 °. However, the present invention is not limited to this, and the display device 12 is held and free-stopped at an arbitrary first rotation angle. Also good.

  Further, the first rotation range in which the first A shaft 51 and the first B shaft 52 of the support member 4 (support bracket 40) are rotated with respect to the base member 2 (the pair of first base bracket 21 and second base bracket 22). First rotation range restricting means 70 for restricting the above may be provided. That is, the first rotation range restricting means 70 is provided between the base member 2 and the support member 4 and has a first rotation range in which the first main shaft 5 of the display device 12 is rotated with respect to the device main body 11. It is something to regulate. The first rotation range restricting means 70 is not particularly limited as long as it can restrict the first rotation range. For example, the first rotation range restricting portion 71 provided on the first shaft 5 and the first A It consists of a 1B rotation range restriction part that engages with the rotation range restriction part 71 and restricts the rotation range of the support member 4 relative to the base member 2. The first rotation range restricting means 70 may be provided on one of the two first A shafts 51 and the first B shaft 52, but is preferably provided on both the two first A shafts 51 and the first B shaft 52. .

  The first A rotation range restricting portion 71 is not particularly limited. For example, the outer peripheries of the flange portion 51a of the first A shaft 51 and the flange portion 52a of the first B shaft 52 are each substantially U-shaped, and two reinforcing plates are used. It is formed so as to be in sliding contact with the surfaces of 7a and 7b. The two U-shaped first flat surface portions 71a and 71b of the first A rotation range restricting portion 71 are formed substantially parallel to each other. The 1B rotation range restricting portions are two reinforcing plates 7a and 7b whose two 1A rotation range restricting portions 71 are in sliding contact with the surface. Accordingly, the first A rotation range restricting portion 71 from the state in which one first flat surface portion 71a of the first A turning range restricting portion 71 is in contact with the surfaces of the reinforcing plates 7a and 7b (particularly, see FIG. 3B). The first A shaft 51 and the first B shaft 52 of the display device 12 with respect to the device main body 11 are moved within a first rotation range of 0 to 180 ° until the other second flat surface portion 71b contacts the surface of the reinforcing plates 7a and 7b. The range of rotation about the shaft is restricted. In addition, although the 1st rotation range was controlled to 0-180 degrees by the 1st rotation range control means 70, it is not limited to this, For example, two plane part 71a, 71b of the 1A A rotation range control part 71 is used. You may make it restrict | limit to arbitrary ranges, changing the angle which mutually opposes.

The 2nd shaft 6 connects the support bracket 40 and the attachment bracket 31 so that rotation is mutually possible. The second shaft 6 has, for example, a cylindrical shape with an inner diameter through which a wiring, for example, an FPC, for electrically connecting the device main body 11 and the display device 12 can pass, and the outer diameter is the support plate portion 41 of the support bracket 40. It is formed in an oval shape (substantially oval) having a size that can be inserted into the insertion hole 43. At one end of the second shaft 6, a flange portion 6 a having a diameter larger than the diameter of the insertion hole 43 of the support plate portion 41 is provided. A portion located in the vicinity of one end portion of the second shaft 6 and in the insertion hole 43 of the support plate portion 41 of the support bracket 40 is formed in a circular shape. In addition, an oval (substantially oval) fitting portion 6 b that can be fitted into the fitting hole 32 of the mounting bracket 31 is provided at the other end portion of the second shaft 6. The fitting portion 6 b is inserted into the insertion hole 43 from the inner surface of the support plate portion 41 of the support bracket 40 and then fitted into the fitting hole 32 of the mounting bracket 31. The support bracket 40 (support member 4) is in a state where the flange portion 6 a of the second shaft 6 is in contact with the inner surface of the support plate portion 41 by caulking the tip end portion of the fit portion 6 b protruding from the fit hole 32. And the mounting bracket 31 (the mounting member 3) are connected to each other so as to be rotatable. A second rotation control means 60 may be provided between the support bracket 40 and the mounting bracket 31.

For example, the second rotation control means 60 is mounted in a state of being fitted to the mounting bracket 31 and is inserted into the support plate 41 to support the support member 4 in a rotatable manner with respect to the mounting member 3. a shaft 6, and the second cam portion 62 provided on the support bracket 40, in the axial direction of the second shaft 6 without rotating fitted to the outer periphery of the second shaft 6 around the axis of the second shaft 6 A second cam body 63 that is movable and in surface contact with the second cam portion 62; and a second urging means 66 that urges the second cam body 63 in surface contact with the second cam portion 62; The second cam protrusion 65 provided on at least one of the contact surface of the second cam body 63 and the second cam portion 62, and at least the other of the contact surface of the second cam body 63 and the second cam portion 62. The attachment member 3 to the support member 4 by engaging with the second cam projection 65 And a second cam recess 64 to hold the position to a predetermined position. The outer periphery of the second cam body 63 and the second biasing means 66 is covered with a sleeve 67.

  For example, the second cam portion 62 is provided on the outer surface of the support plate portion 41 of the support bracket 40 and around the insertion hole 43. For example, four second cam recesses 64 are provided in the second cam portion 62 at intervals of 90 ° in the circumferential direction.

  The second cam body 63 rotates with the second shaft 6, is movable in the axial direction of the second shaft 6, and is in surface contact with the second cam portion 62. The second cam body 63 is formed in a disk shape, for example. An oval (substantially elliptical) insertion hole 63a is provided at the center of the second cam body 63 so as to penetrate in a state where the second shaft 6 is fitted. A second cam convex portion 65 that engages with the second cam concave portion 64 of the second cam portion 62 is disposed on the surface of the second cam body 63 on the second cam portion 62 side (also referred to as a cam surface). Four are provided at intervals of 90 ° in the direction. The second cam convex portion 65 is formed in a substantially trapezoidal shape, for example, and the second cam concave portion 64 is formed in a substantially trapezoidal shape into which the second cam convex portion 65 is fitted, for example.

  The second urging means 66 is not particularly limited as long as it urges the second cam body 63 to be pressed against the second cam portion 62, and may be a disc spring, a spring washer, or other urging member. A spring 66 is preferred. By crimping the end of the fitting portion 6b of the second shaft 6 that passes through the compression spring 66 and protrudes from the fitting hole 32 of the mounting bracket 31, the second cam body 63 is supported by the compression spring 66 by the support bracket. The support bracket 40 (support plate portion 41) is pressed against the support plate portion 41 (second cam portion 62) and friction is generated between the support plate portion 41 and the mounting bracket 31 of the support bracket 40. And the mounting bracket 31 are coupled so as to be rotatable about the second shaft 6.

  The second cam convex portion 65 and the second cam concave portion 64 are, for example, a rotation angle (referred to as a second rotation angle) of −135 to 135 ° with respect to the device body 11 when the display device 12 is centered on the second shaft 6. When rotating in the range, the display device 12 is held in its position with respect to the device body 11 by completely engaging at the second rotation angles of −90 °, 0 ° and 90 °. , 135 to −100 °, −80 to −10 °, 10 to 80 °, and 100 to 135 °, the friction is generated and the free stop state is established. That is, the second cam convex portion 65 and the second cam concave portion 64 allow the display device 12 to be completely engaged with the device main body 11 at the second rotation angles of −90 °, 0 °, and 90 °. Is formed. Further, the second cam convex portion 65 and the second cam concave portion 64 are formed, for example, such that the protruding surface 65a of the second cam convex portion 65 and the cam surface 62a of the second cam portion 62 other than the second cam concave portion 64 are formed in a plane. Thus, the projecting surface 65a of the second cam convex portion 65 and the cam surface 62a of the second cam portion 62 are −135 to −100 °, −80 to −10 °, 10 to 80 °, and 100 to 135 °. In the second rotation range, they are brought into surface contact with each other and friction is generated to form a free stop state.

  In the present invention, −135 ° includes approximately −135 °, −100 ° includes approximately −100 °, −80 ° includes approximately −80 °, and −10 °. Includes approximately −10 °, 80 ° includes approximately 80 °, 100 ° includes approximately 100 °, and 135 ° includes approximately 135 °. The second rotation angle in the present invention is a straight line extending in the longitudinal direction of the support plate 41 when the support plate 41 and the mounting bracket 31 of the support bracket 40 are viewed from the axial direction of the second shaft 6. The angle formed by a straight line extending in the longitudinal direction of the mounting bracket 31, for example, in the case of 0 °, the support plate portion 41 and the mounting bracket 31 overlap each other and can rotate 135 ° back and forth from this state. State. Further, when the second rotation angle is 0 ° and the first rotation angle is 0 °, the device main body 11 and the display device 12 overlap each other, and this state Sometimes, for example, the display device 12 may be attached to the attachment bracket 31 so that the display unit 13 is on the outer surface. In addition, the second cam convex portion 65 and the second cam concave portion 64 are −90 °, 0 °, and 90 ° when the second rotation angle is rotated in the second rotation range of −135 to 135 °. Although formed so as to be completely engaged at an angle, the present invention is not limited to this.

  Moreover, even if the 2nd rotation range regulation means 9 which regulates the 2nd rotation range rotated about the 2nd shaft 6 of the attachment member 3 (attachment bracket 31) with respect to the support member 4 (support bracket 40) is provided. Good. That is, the second rotation range restricting means 9 restricts the second rotation range that rotates around the second shaft 6 of the display device 12 with respect to the device main body 11. The second rotation range restricting means 9 is not particularly limited as long as the second rotation range can be restricted. For example, the second rotation range restricting portion provided on the second shaft 6 and the second A rotation It consists of a 2B rotation range control part engaged with a movement range control part.

  The second A rotation range restricting portion is, for example, a second rotation range restricting convex portion 91 in which a part of the outer periphery of the flange portion 6a of the second shaft 6 protrudes radially outward. The second B rotation range restricting portion is, for example, the second rotation range restricting protrusion 92 of the second reinforcing plate 7b. The second rotation range restricting protrusion 91 and the second turn range restricting protrusion 92 are configured so that the second turn range restricting convex portion 91 is formed on the second reinforcing plate 7b when the second turn angle is −135 °. The rotation in the − direction is restricted by contacting the second rotation range restricting protrusion 92, and when the second turning angle becomes 135 ° from this state, the second turning range restricting protrusion is formed. The portions 91 are formed so as to be in contact with the second rotation range restricting protrusions 92 to restrict the rotation in the + direction. Thereby, the 2nd rotation range rotated with the 2nd shaft 6 of the display apparatus 12 with respect to the apparatus main body 11 as an axis | shaft is controlled by -135-135 degrees. In addition, although the 2nd rotation range was controlled to -135-135 degrees by the 2nd rotation range control means 9, it is not limited to this, You may make it control to arbitrary ranges.

  Next, the operation of the first biaxial hinge 1 and the electronic device 10 according to the present invention will be described.

  In the closed state in which the device main body 11 and the display device 12 overlap each other, the first rotation angle is 0 °, and the first cam convex portion 87 and the first cam concave portion 86 are engaged with each other. The first cam body 82 is urged toward the first cam portion 81 by the disc spring 83 and the second rotation angle is 0 °, so that the second cam convex portion 65 and the second cam concave portion 64 are Since the second cam body 63 is biased toward the second cam portion 62 by the compression spring 66 so that the engagement is performed, the device main body 11 and the display device 12 are closed. It is held in a completed state (see FIG. 1A). In order to maintain this closed state more reliably, another lock mechanism may be provided.

  In order to use the electronic device 10 in the closed state with the display device 12 opened, for example, the display device 12 is rotated with respect to the device body 11 around the first A shaft 51 and the first B shaft 52. At this time, the first flat surface portion 71a of the first A rotation range restricting portion 71 is in contact with the surfaces of the reinforcing plates 7a and 7b (particularly, see FIG. 3B). The circular portion 71c comes into sliding contact with the surfaces of the reinforcing plates 7a and 7b. And if the display apparatus 12 rotates until the 1st rotation angle will be 180 degrees with respect to the apparatus main body 11, the 2nd plane part 71b of the 1st A rotation range control part 71 will be on the surface of the reinforcement plates 7a and 7b, respectively. The rotation stops upon contact. (See FIG. 1 (b)). Thus, when the first rotation angle rotates to 180 °, the second flat surface portion 71b of the first A rotation range restricting portion 71 comes into contact with the surfaces of the reinforcing plates 7a and 7b, and the first cam convex portion. Since 87 and the 1st cam recessed part 86 engage, the apparatus main body 11 and the display apparatus 12 are hold | maintained in this open state.

  Further, when the display device 12 rotates about the first A shaft 51 and the first B shaft 52 with respect to the device main body 11, if the first rotation angle exceeds 10 °, the first cam convex portion 87 is moved to the first cam. The protrusion 87a of the first cam protrusion 87 is slid on the surface of the first cam portion 81 while being in surface contact with the cam surface 81a of the first cam portion 81. As a result, a friction torque is generated between the device main body 11 and the display device 12. Therefore, when the rotation of the display device 12 is stopped, the display device 12 is stopped at that position by the friction torque. Therefore, the display device 12 can be stopped at a desired angle in the first rotation range of 10 to 170 ° with respect to the device main body 11.

  When the display device 12 is opened with respect to the device main body 11 by rotating the first A shaft 51 and the first B shaft 52 about the axis, the display device 12 is further centered on the second shaft 6 with respect to the device main body 11. Can be rotated. For example, from the opened state in which the display device 12 is rotated with respect to the device main body 11 about the first A shaft 51 and the first B shaft 52 until the first rotation angle becomes 180 °, The display device 12 can be rotated in both directions around the second shaft 6. This rotation is restricted by the second turning range restricting means 9 at a second turning angle of ± 135 °. When the display device 12 is rotated by 90 ° in both directions around the second shaft 6 with respect to the device body 11, the second cam convex portion 65 and the second cam concave portion 64 are engaged and held in that state. . This state is a state where the display device 12 is horizontal and the display unit 13 faces upward or downward.

  Further, when the display device 12 rotates about the second shaft 6 with respect to the device body 11, the second rotation angles are −135 to −100 °, −80 to −10 °, 10 to 80 °, and 100 to 100 °. When the angle is 135 °, the second cam convex portion 65 is detached from the second cam concave portion 64 and the tip surface of the second cam convex portion 65 slides on the surface of the second cam portion 62 while being in surface contact with the cam surface. To do. As a result, a friction torque is generated between the device main body 11 and the display device 12. Therefore, when the rotation of the display device 12 is stopped, the display device 12 is stopped at that position by the friction torque. Therefore, the display apparatus 12 is stopped at a desired angle within the second rotation angle range of −135 to −100 °, −80 to −10 °, 10 to 80 °, and 100 to 135 ° with respect to the device main body 11. be able to.

  Therefore, for example, in a state where the device main body 11 is held and fixed with one hand, the display device 12 is grasped with the other hand, and the display device 12 is attached to the device main body 11 with the first A shaft 51 and the first B shaft 52. The angle of the display unit 13 can be adjusted by rotating the display device 12 with respect to the device main body 11 and rotating the display device 12 about the second shaft 6 as an axis. Can be easily adjusted to a position that is easy to see as a large finder.

  In this manner, the display device 12 is opened by rotating the first A shaft 51 and the first B shaft 52 around the device main body 11, and the display device 12 is rotated around the second shaft 6 with respect to the device main body 11. In particular, when the display device 12 is rotated about the second shaft 6 with respect to the device body 11, the second shaft 6 of the second rotation mechanism tends to come off from the support plate portion 41 of the support bracket 40. A force acts on the support plate portion 41. That is, a tensile load is applied to the support plate portion 41 and the support plate portion 41 tends to bend in the direction in which both sides approach each other, but the reinforcing plates 7a and 7b are attached to the inner surface of the support plate portion 41, so that the support plate portion 41 is supported. The plate part 41 is not bent. Therefore, since it is not necessary to increase the thickness of the support plate part 41, the length of the support bracket 40 can be shortened. That is, when the thickness of the support plate portion 41 is increased, the support bracket 40 is formed by bending both end portions of the substrate. Therefore, the thickness of the support piece portions 42a and 42b is also increased and the length of the support bracket 40 is increased. Although it becomes long, since the thickness of the support piece portions 42a and 42b does not increase by attaching the reinforcing plates 7a and 7b to the inner surface of the support plate portion 41, the length of the support bracket 40 can be shortened. Therefore, the cost can be reduced by reducing the number of components, and the support bracket 40 can be reduced in size by securing the necessary strength of the support plate portion 41. As a result, the first biaxial hinge 1 can be reduced in size. Can be achieved.

  The first rotation range restricting means 70 is provided with a first A rotation range restricting portion 71 on the outer periphery of the flange portion 51a of the first A shaft 51 and the flange portion 52a of the first B shaft 52. Since the portion 71 can be slidably contacted with the surfaces of the two reinforcing plates 7a and 7b, the portion where the first A rotation range restricting portion 71 engages when the first rotation range is restricted is the reinforcing plate 7a. 7b, the bracket such as the support bracket 40 is not directly involved. That is, the flange portions 51a and 52a of the two first A shaft 51 and the first B shaft 52 are used as stoppers, and the stoppers are slidably contacted (engaged) with the surfaces of the reinforcing plates 7a and 7b, respectively. A large surface for regulating the rotation range can be taken, and the reinforcing plates 7a and 7b are used to regulate the first rotation range, so that the first biaxial hinge 1 is sufficient for the first rotation. The range can be regulated. Therefore, since it is not necessary to provide means for restricting the first rotation range in the bracket such as the device main body 11, the display device 12, or the support bracket 40, the bracket such as the support bracket 40 can be downsized. The first biaxial hinge 1 can be reduced in size.

  The second rotation range restriction means 9 is provided with a second rotation range restriction projection 91 on the outer periphery of the flange portion 6a of the second shaft 6, and the second rotation range restriction projection 91 is provided as a second reinforcing plate. The portion where the second rotation range restriction convex portion 91 abuts when the second rotation range is restricted by being brought into contact (engaged) with the second rotation range restriction protrusion 92 provided in 7b. However, the bracket such as the support bracket 40 does not directly engage with the second rotation range restricting projection 92 of the reinforcing plate 7b, so that there is no means for restricting the second rotation range on the bracket such as the support bracket 40. The bracket such as the support bracket 40 can be downsized, and as a result, the first biaxial hinge 1 can be further downsized.

  Further, by using the compression spring 66 as the second urging means, the outer diameter of the portion connecting the support bracket 40 and the mounting bracket 31, that is, the outer diameter of the sleeve 67 can be reduced. That is, if a disc spring is used as the second urging means, the disc spring will not bend when the outer diameter is reduced, and will not function as a spring, so the outer diameter of the connecting portion between the support bracket 40 and the mounting bracket 31 will increase. As a result, it becomes large. On the other hand, the compression spring 66 has a function as a spring even when the outer diameter is reduced, and the biasing force can be easily adjusted. Therefore, by using the compression spring 66 as the second urging means, the outer diameter of the portion connecting the support bracket 40 and the mounting bracket 31, that is, the outer diameter of the sleeve 67 can be reduced, and as a result, the first The overall size of the two-axis hinge 1 can be reduced. Further, by using the disc spring 83 as the first urging means, the length of the portion connecting the second base bracket 22 and the support bracket 40, that is, the length of the sleeve 84 can be shortened. The first biaxial hinge 1 can be reduced in size.

  Further, the wiring for electrically connecting the apparatus main body 11 and the display device 12, for example, FPC, passes through the first A shaft 51 and reaches between the support piece portions 42 a and 42 b of the support bracket 40, and from there to the second shaft 6. Wiring can be performed easily.

  6 and 7 are views showing an example of an electronic apparatus provided with the second biaxial hinge according to the present invention. 8-10 is a figure which shows an example of the 2nd biaxial hinge based on this invention. The second biaxial hinge according to the present invention is different from the first biaxial hinge 1 described above in the configuration of the second rotational range restricting means 9 and the first restricted by the first rotational range restricting means 70. One rotation range, control by the first rotation control means 8, and control by the second rotation control means 60. In addition, the same name is attached | subjected to the member same as the above-mentioned 1st biaxial hinge 1, and the description may be abbreviate | omitted.

  This second biaxial hinge is also used to open and close the electronic device 14 as shown in FIGS. 6 and 7. As an example of the electronic device 14 provided with the second biaxial hinge 100, a mobile phone is used. Although explained, it is not limited to this. The first casing 15 and the second casing 16 are each formed in a substantially rectangular shape on a plane. On the upper surface of the first housing 15, for example, an operation unit 17 such as a keyboard unit is provided. On one surface of the second housing 16, for example, a display unit 18 such as an LCD is provided. The electronic device 14 is configured to be openable and closable via a second biaxial hinge 100 in a closed state in which the second housing 16 is superimposed on the upper surface of the first housing 15.

  Similarly to the first biaxial hinge 1, the second biaxial hinge 100 according to the present invention includes the base member 2, the support member 4, and the mounting member 3, as shown in FIGS. The base member 2 and the support member 4 are rotatably connected to each other via the first shaft 5, and the support member 4 and the mounting member 3 are rotatably connected to each other via the second shaft 6. Has been. The attachment member 3 is formed in, for example, a horizontally long rectangular flat plate shape, and the attachment piece portions 33a and 33b are formed by bending the vicinity of both side portions of the front end portion in a substantially orthogonal direction. The attachment pieces 33a and 33b are provided with attachment holes 34a and 34b for attaching the attachment member 3 to the second housing 16 with, for example, screws.

  The insertion hole 43 of the support plate portion 41 of the support member 4 is provided at a position shifted from the center portion in the longitudinal direction of the support plate portion 41 toward the second support piece portion 42b. Between the insertion hole 43 and both ends, one mounting hole 44a having a thread groove is provided. In addition, circular fitting protrusions 44c are provided on the inner surface of the support plate portion 41 and in the vicinity of the attachment hole 44a. A reinforcing plate 7 (two reinforcing plates 7f and 7g) is attached to the inner surface of the support plate portion 41.

  The two reinforcing plates 7f and 7g have a substantially rectangular flat plate shape. For example, one end portion is in contact with the inner surface of the supporting piece portions 42a and 42b, and the reinforcing plate 7g on the second supporting piece portion 42b side (third reinforcing plate 7g). The other end of the support plate 41 is formed in the vicinity of the insertion hole 43. The two reinforcing plates 7f and 7g are provided with mounting holes 7d for mounting using, for example, screws 49 so as to face the mounting holes 44a of the supporting plate portion 41, and the fitting protrusions of the supporting plate portion 41. A mounting hole 7h for fitting with 44c is provided.

  The first A rotation range restricting portion 73 constituting the first rotation range restricting means 70 is, for example, an outer periphery of the flange portion 51a of the first A shaft 51 and the flange portion 52a of the first B shaft 52. It is substantially U-shaped in parallel and is formed so as to be in sliding contact with the surfaces of the two reinforcing plates 7f and 7g, and the first flat surface portion 73a of the first A rotation range restricting portion 73 is the reinforcing plates 7f and 7g. The first rotation angle until the second flat surface portion 73b of the first A rotation range restricting portion 73 comes into contact with the surfaces of the reinforcing plates 7f and 7g is set to −15 to 165 °. Has been. As a result, when the first rotation angle is 0 °, the second housing 16 is in close contact with the first housing 15, and the second housing 16 is further in the minus direction with respect to the first housing 15. The first rotation range is regulated to 0 to 165 ° without rotating. In the present invention, −15 ° includes approximately −15 °, and 165 ° includes approximately 165.

A compression spring 88 is used as the first urging means constituting the first rotation control means 8. Four first cam recesses constituting the first rotation control means 8 are provided in the first cam body 82 , and two first A cam recesses 89 a are 180 ° in the circumferential direction of the first cam body 82 . The remaining two 1B cam recesses 89b are provided at intervals of 180 ° in the circumferential direction of the first cam body 82 and at a position separated from the first A cam recesses 89a by 100 ° in the circumferential direction. It has been. The first A cam recess 89a is formed to be completely engaged with the first cam protrusion 87 when the first rotation angle is, for example, −10 ° from 0 °. When formed in this way, when the first rotation angle is 0 ° and 165 °, the first cam convex portion 87 is not completely engaged with the first A cam concave portion 89a, and the first cam convex portion is in the middle of engagement. The portion 87 is in the middle of the inclined surface of the first A cam recess 89a. Further, the first B cam recess 89b is formed at a position to engage with the first cam protrusion 87 when the first rotation angle is 90 °. The 1A cam recess 89a and a surface other than the 1B cam recess 89b of the first cam member 82 is formed in a plane, One or, when the distal end portion of the first cam protrusion 87 is in contact with the plane, for example, the first When the rotation range is 10 to 80 ° and 100 to 150 °, the friction is generated and the free stop state is established. In addition, the 1st rotation range used as this free stop state is not limited to 10-80 degrees and 100-150 degrees, changing the shape of the 1st A cam recessed part 89a and the 1st B cam recessed part 89b, etc., and desired The angle can be set.

  The 2A rotation range restriction | limiting part 93 which comprises the 2nd rotation range restriction | limiting means 9 is a substantially U-shaped outer periphery of the flange part 6a of the 2nd shaft 6, for example, and is on the side surface of the 3rd reinforcement board 7g. It is formed so that it can slide. The two U-shaped first flat surface portion 93a and second flat surface portion 93b of the second A rotation range restricting portion 93 are formed substantially parallel to each other. The second B rotation range restricting portion is the third reinforcing plate 7g. As a result, the other second flat surface portion 93b of the second A rotation range restricting portion 93 is subjected to the third reinforcement from the state where one first flat surface portion 93a of the second A rotating range restricting portion 93 is in contact with the side surface of the reinforcing plate 7g. The range of rotation about the second shaft 6 of the second housing 16 relative to the first housing 15 is regulated in the second rotation range of 0 to 180 ° until the side surface of the plate 7g comes into contact. ing. In addition, although the 2nd rotation range was controlled to the range of 0-180 degrees by the 2nd rotation range control means 9, it is not limited to this, For example, two 1st plane parts of the 2A rotation range control part 93 You may make it restrict | limit to arbitrary ranges, such as changing the angle which 93a and the 2nd plane part 93b mutually oppose.

  The second cam convex portion 68 and the second cam concave portion 69 constituting the second rotation control means 60 are respectively provided in the second cam body 63 and the second cam portion 62, for example, at intervals of 180 ° in the circumferential direction. Is provided. The second cam convex portion 68 and the second cam concave portion 69 are second rotated when the second casing 16 rotates within a second rotating range of 0 to 180 ° with respect to the first casing 15. The second housing 16 is held at that position with respect to the first housing 15 at an angle of 0 ° and 180 °, and friction is generated in a second rotation range of 10 to 170 °, for example, and free stop is performed. It is formed to be in a state. That is, the second cam convex portion 68 is formed in a substantially trapezoidal cross section, and the cam surface 62a of the second cam portion 62 other than the second cam concave portion 69 is formed in a flat surface, and these second cam convex portions 68 are formed. The projecting surface 68a of the second cam portion 62 and the cam surface 62a of the second cam portion 62 are in surface contact with each other within a second rotation range of 10 to 170 ° so that friction is generated and a free stop state is established. In addition, the 2nd rotation range used as this free stop state is not limited to 10-170 degrees, It can set to a desired angle by changing the shape of the 2nd cam recessed part 69, etc.

  Next, the operation of the second biaxial hinge 100 and the electronic device 14 according to the present invention will be described.

  In the closed state where the first housing 15 and the second housing 16 overlap each other, for example, the upper surface of the first housing 15 having the operation unit 17 and the surface of the second housing 16 having the display unit 18 are in close contact with each other. In this closed state, when the first rotation angle is 0 °, the first cam projection 87 and the first A cam recess 89a are engaged by the elasticity of the compression spring 88, and the second rotation Since the second cam convex portion 68 and the second cam concave portion 69 are engaged by the elasticity of the compression spring 66 at an angle of 0 °, the first housing 15 and the second housing 16 are held in a closed state. (See FIG. 6A).

  In this closed state, the first cam convex portion 87 and the first A cam concave portion 89a are engaged, but the first engagement is not the state in which the engagement is completely (including substantially complete) but the first. The leading end of the cam projection 87 is positioned in the middle of the inclined surface of the first A cam recess 89a. For this reason, the first casing 15 is biased by the elasticity of the compression spring 88 so as to overlap the second casing 16, so that the first casing 15 and the second casing 16 are closed without rattling. Is retained.

  In order to use the electronic device 14 in the closed state by opening the second housing 16, for example, the second housing 16 is used with the first A shaft 51 and the first B shaft 52 as axes with respect to the first housing 15. It is rotated in the opening direction (the direction in which the second housing 16 is separated from the first housing 15). At this time, the semicircular portion 73c of the first A rotation range restricting portion 73 from the state where the first flat surface portion 73a of the first A turning range restricting portion 73 is close to the surface of the reinforcing plates 7f and 7g. The surface comes into sliding contact. When the second housing 16 rotates 90 ° with respect to the first housing 15 (see FIGS. 6B and 6C), the first cam convex portion 87 and the first B cam concave portion 89b are engaged. Thus, the first housing 15 is held in the 1A open state in which the second housing 16 is opened by 90 °. In the 1A opening state, the operation unit 17 is exposed to be operable and the display unit 18 is exposed to be visible, so that the operation unit 17 can be operated while viewing the display unit 18.

  Further, when the second casing 16 is rotated with respect to the first casing 15 from the first A opening state and the first rotation angle becomes 165 ° (see FIGS. 6D and 6E), the first A is used. Since the second flat surface portion 73b of the rotation range restricting portion 73 comes into contact with the surfaces of the reinforcing plates 7f and 7g and stops rotating, the first cam convex portion 87 and the first A cam concave portion 89a are engaged. The first casing 15 and the second casing 16 are held in the second open state. Even in the second opened state, the operation unit 17 can be operated while viewing the display unit 18.

  In the second open state, the first cam convex portion 87 and the first A cam concave portion 89a are engaged, but the engagement is not in a fully engaged state (including substantially complete) but in the first state. This is a state in which the leading end portion of the one cam convex portion 87 is located in the middle of the inclined surface of the first A cam concave portion 89a. For this reason, since the first casing 15 is biased by the elasticity of the compression spring 88 so as to overlap the second casing 16, the first casing 15 and the second casing 16 are in the second open state without rattling. Is held in.

Further, when the second casing 16 rotates with respect to the first casing 15 about the first A shaft 51 and the first B shaft 52, the first rotation angle is in the range of 10 to 80 ° and 100 to 150 °. Sometimes, the first cam convex portion 87 is detached from the first A cam concave portion 89a or the first B cam concave portion 89b, and the front end portion of the first cam convex portion 87 is in contact with the plane of the first cam body 82 while sliding on the surface. Move. As a result, a friction torque is generated between the first housing 15 and the second housing 16, so when the rotation of the second housing 16 is stopped, the second housing 16 stops at that position by the friction torque. To do. Therefore, the second housing 16 can be stopped at a desired position in the first rotation range of 10 to 80 ° and 100 to 150 ° with respect to the first housing 15.

  In order to return from the second open state and the 1A open state to the closed state, the second housing 16 is closed with respect to the first housing 15 in the direction in which the first A shaft 51 and the first B shaft 52 are closed (the first housing). By rotating the body 15 in a direction approaching the second housing 16), the closed state in which the first housing 15 and the second housing 16 overlap each other can be returned.

  Further, when the second casing 16 is opened relative to the first casing 15 by rotating about the first A shaft 51 and the first B shaft 52, for example, in the 1A open state, the 2A rotation range restriction Since the first flat surface portion 93a of the portion 93 is in contact with the side surface of the third reinforcing plate 7g, the semicircular portion 93c of the second A rotation range restricting portion 93 can be in contact with the side surface of the third reinforcing plate 7g. Can be rotated. Therefore, the second housing 16 can be rotated about the second shaft 6 with respect to the first housing 15 from the 1A open state. This rotation can be performed in the second rotation range of 0 to 180 ° until the second flat surface portion 93b of the second A rotation range restricting portion 93 contacts the side surface of the third reinforcing plate 7g. When this rotation is performed 90 °, an intermediate state is obtained (see FIGS. 7A and 7B). Further, if the rotation is performed by 90 °, the 1B opening state is changed to the 1B opening state in which the direction of the second housing 16 is different from the 1A opening state (see FIGS. 7C and 7D). Since the part 68 and the 2nd cam recessed part 69 are engaging, the 1st housing | casing 15 and the 2nd housing | casing 16 can be hold | maintained in a 1B open state.

When the second casing 16 rotates about the second shaft 6 with respect to the first casing 15 and the second rotation range is 10 to 170 °, the second cam projection 68 is the second cam. The protrusion 68a of the second cam projection 68 is separated from the recess 69 and slides on the surface while contacting the cam surface 62a of the second cam 62. As a result, a friction torque is generated between the first housing 15 and the second housing 16, so when the rotation of the second housing 16 is stopped, the second housing 16 stops at that position by the friction torque. To do. Therefore, the second housing 16 can be stopped at a desired angle in the second rotation range of 10 to 170 ° with respect to the first housing 15.

  Further, even in the 1B open state, the second housing 16 can be rotated with respect to the first housing 15 in the closing direction with the first A shaft 51 and the first B shaft 52 as axes, so that the display unit 18 is placed on the upper surface. Closed state. In this case, the display unit 18 can be viewed with the second housing 16 closed.

  Therefore, for example, in a state where the first casing 15 is held and fixed with one hand, the second casing 16 is grasped with the other hand, and the second casing 16 is held with respect to the first casing 15. By rotating the 1A shaft 51 and the first B shaft 52 about the shaft and opening the shaft, and further rotating the second housing 16 about the second shaft 6 with respect to the first housing 15, the angle of the second housing 16 is increased. The second housing 16 can be easily adjusted to a position where it can be easily seen.

  In this manner, the second housing 16 is opened with the first A shaft 51 and the first B shaft 52 being rotated with respect to the first housing 15, and the second housing 16 is further opened with respect to the first housing 15. When rotating the second shaft 6 around the axis, especially when rotating the second casing 16 relative to the first casing 15 around the second shaft 6, the second shaft 6 of the second rotating mechanism is supported. A force that tends to come off from the support plate portion 41 of the bracket 40 acts on the support plate portion 41. That is, a tensile load is applied to the support plate portion 41 and the support plate portion 41 tends to bend in the direction in which both sides approach each other, but the reinforcing plates 7f and 7g are attached to the inner surface of the support plate portion 41. The plate part 41 is not bent. Therefore, since it is not necessary to increase the thickness of the support plate part 41, the length of the support bracket 40 can be shortened. That is, when the thickness of the support plate portion 41 is increased, the support bracket 40 is formed by bending both end portions of the substrate. Therefore, the thickness of the support piece portions 42a and 42b is also increased and the length of the support bracket 40 is increased. Although it becomes long, since the thickness of the support piece portions 42a and 42b does not increase by attaching the reinforcing plates 7f and 7g to the inner surface of the support plate portion 41, the length of the support bracket 40 can be shortened. Accordingly, the cost can be reduced by reducing the number of parts, and the support bracket 40 can be secured with the required strength to reduce the size of the support bracket 40. As a result, the second biaxial hinge 100 can be reduced in size. Can be achieved.

The first rotation range restricting means 70 is provided with a first A rotation range restricting portion 73 on the outer periphery of the flange portion 51a of the first A shaft 51 and the flange portion 52a of the first B shaft 52. Since the portion 73 can be brought into sliding contact with the surfaces of the two reinforcing plates 7f and 7g, the portion where the first A rotation range restricting portion 73 engages when the first rotation range is restricted is the reinforcing plate 7f. 7g, brackets such as the support bracket 40 are not directly involved. That is, the flange portions 51a and 52a of the two first A shaft 51 and the first B shaft 52 are used as stoppers, and the stoppers are slidably contacted (engaged) with the surfaces of the reinforcing plates 7f and 7g, respectively. A large surface for restricting the rotation range can be taken, and the reinforcing plates 7f and 7g are used for restricting the first rotation range, so that the first two-axis hinge 100 is sufficient for the first rotation. The range can be regulated. Therefore, it is not necessary to provide a means for restricting the first rotation range in the first housing 15, the second housing 16, or the bracket such as the support bracket 40, so that the bracket such as the support bracket 40 can be downsized. As a result, the size of the second biaxial hinge 100 can be reduced.

  The second rotation range restricting means 9 is provided with a second A rotation range restricting portion 93 on the outer periphery of the flange portion 6a of the second shaft 6, and the second A turning range restricting portion 93 is provided on the third reinforcing plate 7g. By making contact (engagement) with the side surface, when the second rotation range is restricted, the place where the second A rotation range restriction portion 93 abuts is the third reinforcing plate 7g, such as the support bracket 40 or the like. Since the brackets do not directly engage with each other, it is not necessary to provide a means for restricting the second rotation range on the bracket such as the support bracket 40, and the bracket such as the support bracket 40 can be downsized. The size of the two biaxial hinges 100 can be reduced.

  Further, by using the compression spring 66 as the second urging means, the outer diameter of the portion connecting the support bracket 40 and the mounting bracket 31, that is, the outer diameter of the sleeve 67 can be reduced. That is, if a disc spring is used as the second urging means, the disc spring will not bend when the outer diameter is reduced, and will not function as a spring, so the outer diameter of the connecting portion between the support bracket 40 and the mounting bracket 31 will increase. As a result, it becomes large. On the other hand, the compression spring 66 has a function as a spring even when the outer diameter is reduced, and the biasing force can be easily adjusted. Therefore, by using the compression spring 66 as the second urging means, the outer diameter of the portion connecting the support bracket 40 and the mounting bracket 31, that is, the outer diameter of the sleeve 67 can be reduced, and as a result, the second The overall size of the biaxial hinge 100 can be reduced. Further, by using the compression spring 88 as the first urging means, the outer diameter of the portion connecting the second base bracket 22 and the support bracket 40, that is, the outer diameter of the sleeve 84 can be reduced. The second biaxial hinge 100 can be reduced in size.

  Further, the wiring for electrically connecting the first casing 15 and the second casing 16, for example, FPC, passes through the first A shaft 51 and reaches between the support piece portions 42 a and 42 b of the support bracket 40, and then from there. Since it passes through the two shafts 6, wiring can be easily performed.

  As described above, in the biaxial hinge according to the present invention, the reinforcing plate for reinforcing the bending strength of the supporting plate portion is attached to the supporting plate portion of the supporting member, thereby reducing the number of parts and reducing the cost. In addition, the required strength of the support plate portion can be ensured and the size can be reduced. Further, a first rotation range restricting means is provided between the base member and the support member, and the first rotation range restricting means is provided on the first shaft. Since the first rotation range of the support member relative to the base member is restricted by engaging with the movement range restriction portion and the reinforcing plate is attached to the support member, the first rotation range can be sufficiently restricted. Therefore, it is particularly suitable for use in camera devices such as video cameras and digital cameras and mobile phones.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the camera apparatus as an example of the electronic device which concerns on this invention, (a) is a figure which shows a closed state, (b) is a figure which shows the state opened 180 degrees centering on the 1st shaft, (c) ) Is a view showing a state in which the second shaft is further rotated around the axis from the state of (b). It is a perspective view which shows an example of the 1st biaxial hinge which concerns on this invention. It is a figure which shows an example of the 1st biaxial hinge which concerns on this invention, (a) is a top view, (b) is AA arrow sectional drawing in (a). It is a disassembled perspective view which shows an example of the 1st biaxial hinge which concerns on this invention. It is a disassembled perspective view which shows an example of the 1st biaxial hinge which concerns on this invention. It is a figure which shows an example of the electronic device provided with the 2nd biaxial hinge based on this invention, (a) is a side view which shows a closed state, (b) is a side view which shows a 1A open state, (c) (A) is a front view which shows a 1st A opening state, (d) is a side view which shows a 2nd opening state, (e) is a front view which shows a 2nd opening state. It is a figure which shows an example of the electronic device provided with the 2nd biaxial hinge which concerns on this invention, (a) is a side view which shows the state rotated 90 degrees centering on the 2nd shaft from the 1A opening state, (b) ) Is a front view showing a state in which the second shaft is rotated by 90 ° from the 1A opening state, and (c) is a 1B opening state in which the second shaft is rotated by 180 ° from the first A opening state. A side view and (d) are the front views which show the 1B opening state rotated 180 degree | times centering on the 2nd shaft from the 1A opening state. It is a perspective view which shows an example of the 2nd biaxial hinge which concerns on this invention. It is a disassembled perspective view which shows an example of the 2nd biaxial hinge which concerns on this invention. It is a disassembled perspective view which shows an example of the 2nd biaxial hinge which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st biaxial hinge 2 Base member 3 Mounting member 4 Support member 5 1st shaft 6 2nd shaft 7 Reinforcement board 8 1st rotation control means 9 2nd rotation range control means 10 Electronic device 11 Apparatus main body (1st 1 case)
12 Display device (second housing)
DESCRIPTION OF SYMBOLS 13 Display part 14 Electronic device 15 1st housing | casing 16 2nd housing | casing 21 1st base bracket 22 2nd base bracket 31 Mounting bracket 40 Support bracket 51 1st A shaft 52 1st B shaft 60 2nd rotation control means 62 2nd Cam part 63 2nd cam body 64 2nd cam recessed part 65 2nd cam convex part 66 Compression spring (2nd biasing means)
68 2nd cam convex part 69 2nd cam recessed part 70 1st rotation range regulation means 71 1A 1st rotation range regulation part 73 1st 1A rotation range regulation part 81 1st cam part 82 1st cam body 83 Belleville spring (1st 1 biasing means)
86 1st cam recessed part 87 1st cam convex part 88 Compression spring (1st biasing means)
89a 1A cam recessed part 89b 1B cam recessed part 91 2nd rotation range control convex part 92 2nd rotation range control protrusion 93 2A rotation range control part 100 2nd biaxial hinge

Claims (8)

A board part and a shaft support piece part raised from the board part are provided, and the board part is provided at a predetermined interval in one of the first housing and the second housing constituting the electronic device. has a pair of base members attached Te, the supporting plate portion and the pair of support pieces formed by bending from both ends of the support plate, the 1A shaft the respective support piece in the respective shaft support piece portions And a support member rotatably attached via the first B shaft , and the support plate portion of the support member can be rotated within a predetermined range in a direction orthogonal to the rotation direction of the support member via the second shaft. An attachment member attached to the other housing of the first housing and the second housing, the support plate portion of the support member sandwiching the second shaft therebetween Attach a pair of reinforcing plates to reinforce the bending strength. A first rotation range restricting means is provided between one of the plates and one of the first A shaft or the first B shaft, and a first rotation range restricting means is provided between the other of the reinforcing plates and the second shaft. A two- axis hinge characterized in that a two- turn regulation range regulation means is provided . Each support piece portion of the support member is rotatably attached to at least one of the shaft support piece portions of the base member via a first rotation control means. control means, the first 1A shaft or the 1B to the support member for supporting rotatably relative to the base member is inserted into the support piece with attached in the fitted state in the shaft support piece portion and one of those of the shaft, a first cam portion provided on the supporting piece part, together with the movable fitted in the axial direction on the outer periphery of one of those of the first 1A shaft or the 1B shaft, wherein A first cam body in surface contact with the first cam portion; first biasing means for biasing the first cam body so as to make surface contact with the first cam portion; and a contact surface of the first cam body; First cam protrusion provided on at least one of the first cam portion , Provided on at least the other of the contact surface of the first cam body and the first cam portion, and engages with the first cam convex portion to hold the position of the support member with respect to the base member at a predetermined position. The biaxial hinge according to claim 1, further comprising a first cam recess.   The attachment member is rotatably attached to the support member via second rotation control means, and the second rotation control means is attached in a state of being fitted to the attachment member. And the second shaft that is inserted into the support plate portion and rotatably supports the attachment member with respect to the mounting member, the second cam portion provided on the support plate portion of the support member, and the first A second cam body that fits on the outer periphery of the two shafts and is movable in the axial direction of the second shaft, and is in surface contact with the second cam portion; and the second cam body is connected to the second cam portion. Contact between the second cam body, second biasing means for biasing the surface to come into surface contact, a second cam projection provided on at least one of the contact surface of the second cam body and the second cam portion. Provided on at least the other of the surface and the second cam portion, the second cam protrusion Wherein the engaging and a second cam recess for holding the position of the mounting member relative to the support member in a predetermined position and, biaxial hinge according to claim 1 or 2. Before Symbol first rotation range restricting means, said a first 1A rotation range restricting portion provided on one of those of the 1A shaft or the 1B shaft, engaged with the first 1A rotation range restricting portion The biaxial hinge according to any one of claims 1 to 3, comprising a first B rotation range restricting portion that restricts a first rotation range of the support member with respect to the base member. The first A rotation range restricting portion is a flange portion formed by forming an outer periphery of one of the first A shaft and the first B shaft in a substantially U shape, and the first B rotation range restricting portion. The biaxial hinge according to claim 4, wherein the portion is the reinforcing plate in which the first A rotation range restricting portion is in sliding contact with the surface. Before Stories second rotation range restricting means, first of the and the 2A rotation range restricting portion provided in the second shaft, the mounting member relative to the first 2A rotation range restricting portion engaged with the support member The biaxial hinge according to any one of claims 1 to 5, comprising a second B rotation range restricting portion that restricts the two rotation ranges.   The second A rotation range restricting portion is a second rotation range restricting convex portion provided on the second shaft, and the second B rotation range restricting portion is provided on the reinforcing plate. The biaxial hinge according to claim 6, wherein the biaxial hinge is a range restricting protrusion. An electronic apparatus comprising the biaxial hinge according to any one of claims 1 to 7 .

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