JP2017002969A - Monitor hinge - Google Patents

Abstract

Provided is a monitor hinge which can be made compact while applying a sufficient urging force to the monitor. In a monitor hinge 1, a first cam 13 is connected by receiving a biasing force from a compression spring 35 via a first slider 33 in the entire rotation region of a connecting member 31 from a horizontal plane 2a. The member 31 assists in turning away from the horizontal surface 2a, and the second cam 23 is located at the open end portion of the monitor fixing surface 3b in the rotation region of the monitor fixing surface 3b from the connecting member 31. By receiving the urging force from the compression spring 35 via 34, the rotation of the monitor fixing surface 3 b away from the connecting member 31 is assisted. [Selection] Figure 2

Description

  The present invention relates to a monitor hinge for connecting a plate-like monitor to a fixed part of, for example, office equipment.

  Conventionally, many office machines such as notebook PCs have a plate-like monitor on the upper surface of the fixed part, and the monitor is closed (closed) and opened (open) with respect to the fixed part. And can be transitioned. At this time, the monitor is connected to the fixed portion via the monitor hinge, and the monitor can be opened and closed with respect to the fixed portion by rotating the monitor hinge (see, for example, Patent Document 1).

JP 2003-122447 A

  As described above, the monitor hinge according to the related art has a configuration in which the rotation support portions are provided on both the fixed portion side and the monitor side. In addition, the monitor hinge needs to support the weight of the monitor or prevent shaking when the user touches the touch panel monitor. For this reason, in the prior art, there may be used a configuration in which a torsion spring is provided on the rotation support portion on the fixed portion side and the monitor side to apply an urging force to the monitor. However, in order to provide a sufficient biasing force with the monitor hinge, it is necessary to provide a torsion spring on both of the rotation support parts, and the configuration becomes large, so it is difficult to make the monitor hinge compact. there were.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and the problem to be solved by the present invention is to provide a monitor hinge that can be made compact while providing a sufficient urging force to the monitor. It is to be.

  Hereinafter, means for solving the above problems will be described.

  That is, in Claim 1, the 1st fixing member fixed to the horizontal surface in a fixing | fixed part, the 1st rotating shaft fixed to a said 1st fixing member so that relative rotation is impossible, and said 1st rotating shaft A first cam fixed in a relatively non-rotatable manner, a second fixing member fixed to a monitor fixing surface formed on the back side of the display surface of the plate-like monitor, and parallel to the first rotation shaft A second rotating shaft fixed to the second fixing member so as not to rotate relative to the second fixing member; a second cam fixed to the second rotating shaft so as not to rotate relative to the second fixing member; A cylindrical shape that is rotatably connected to the first fixing member via a rotating shaft and that is rotatably connected to the second fixing member via the second rotating shaft. A first cam surface is formed on the connecting member and the first cam side, and is close to and away from the first cam. A second cam surface is formed on the side of the first slider and the second cam accommodated in the connecting member so as to be movable in the direction, and movable in a direction approaching and separating from the second cam. A second slider housed inside the connecting member, and interposed between the first slider and the second slider, and biasing the first slider and the second slider away from each other A compression spring that rotates the connection member and the monitor so that the rotation direction of the connection member with respect to the horizontal plane is opposite to the rotation direction of the monitor fixing surface with respect to the connection member. By doing so, the monitor and the fixing part are capable of transitioning between a closed state in which the horizontal plane and the monitor fixing surface are parallel and an open state in which the monitor fixing surface rises with respect to the horizontal plane. Ream And the first cam receives the urging force from the compression spring via the first slider in the entire rotation region of the connection member from the horizontal plane. Assists in turning away from the horizontal plane, and the second cam moves the second slider at an open end portion of the monitor fixing surface in a rotation region of the monitor fixing surface from the connecting member. By receiving an urging force from the compression spring via, the rotation of the monitor fixing surface away from the connecting member is assisted.

  According to a second aspect of the present invention, the difference between the maximum rotation angle of the monitor fixing surface from the connecting member and the maximum rotation angle of the connecting member from the horizontal plane is set to be less than 90 degrees.

  According to a third aspect of the present invention, a plurality of sets of the first slider, the second slider, and the compression spring are arranged side by side in the axial direction of the first rotation shaft.

  According to a fourth aspect of the present invention, the connecting member is provided with a guide member having a cable insertion hole opened in the axial direction of the connecting member.

  According to a fifth aspect of the present invention, the connecting member is provided with a cover that covers the connecting member, and the cover is brought into contact with the second fixing member, whereby the second fixing member and the connecting member are rotated. It regulates movement.

  The monitor hinge according to the present invention has an effect that the monitor hinge can be made compact while applying a sufficient urging force to the monitor.

The right view which shows the monitor hinge which concerns on one Embodiment of this invention, a monitor, and a fixing | fixed part. The perspective view which similarly shows a monitor hinge. The top view which similarly shows a monitor hinge. The top view which shows the monitor hinge of the state which removed the cover. The front view which similarly shows a monitor hinge. (A) is a right view which similarly shows a monitor hinge, (b) is the sectional view on the AA line in FIG. The right view which shows the monitor hinge in the 1st rotation state, a monitor, and a fixing | fixed part. The right view which shows the monitor hinge in a 1st rotation state. Sectional drawing which shows the monitor hinge in a 1st rotation state. The right view which shows the monitor hinge in the 2nd rotation state, a monitor, and a fixing part. The right view which shows the monitor hinge in a 2nd rotation state. Sectional drawing which shows the monitor hinge in a 2nd rotation state. The right view which shows the monitor hinge in the 3rd rotation state, a monitor, and a fixing | fixed part. The right view which shows the monitor hinge in a 3rd rotation state. Sectional drawing which shows the monitor hinge in a 3rd rotation state. The perspective view which shows the monitor hinge which concerns on another embodiment of this invention.

  First, the monitor hinge 1 according to the present embodiment will be described with reference to FIGS. 1 to 6. The monitor hinge 1 connects the fixed portion 2 and the touch panel monitor 3. Specifically, as shown in FIG. 1, a horizontal surface 2 a in the fixing portion 2 and a monitor fixing surface 3 b formed on the back side of the display surface 3 a in the monitor 3 are connected. The monitor hinge 1 is in a closed state (see FIG. 1) in which the horizontal surface 2a and the monitor fixing surface 3b are parallel to each other, and an open state in which the monitor fixing surface 3b stands with respect to the horizontal surface 2a (see FIG. 13). , Transition is possible. In the present embodiment, illustration and description of various cables connected to the monitor fixing surface 3b are omitted.

  As shown in FIGS. 1 to 6, the monitor hinge 1 includes, as main components, a first fixing member 11 (11R / 11L), a first rotating shaft 12, a first cam 13, and a second fixing member 21. (21R / 21L), the second rotating shaft 22, the second cam 23, the connecting member 31, the first slider 33, the second slider 34, and the compression spring 35 (35a, 35b, 35c), A cover 41. Hereinafter, it demonstrates in order.

  The first fixing member 11 includes a right first fixing member 11R and a left first fixing member 11L, each of which is formed by bending a single metal plate into an L shape. Each of the right first fixing member 11R and the left first fixing member 11L is formed with a first fixing surface 11a that supports the first rotating shaft 12 as will be described later.

  When the first fixing member 11 is fixed to the horizontal surface 2a of the fixing portion 2, the first fixing surfaces 11a and 11a are arranged to face each other at positions parallel to each other while being orthogonal to the horizontal surface 2a. In the first fixed surface 11a, a guide groove 11b is opened through the first fixed surface 11a.

  The first rotating shaft 12 is fixed so as not to rotate relative to the first fixing member 11. Specifically, the first rotating shaft 12 is spanned between the right first fixing member 11R and the left first fixing member 11L by being inserted through both the first fixing surfaces 11a and 11a.

  A first cam 13 is fixed to the first rotating shaft 12. Specifically, as shown in FIG. 6B, the first cam 13 is formed with an insertion hole 13a penetrating in the axial direction, and the first rotating shaft 12 is inserted into the insertion hole 13a. One rotating shaft 12 is fixed to the first fixing member 11. Since the insertion portion of the insertion hole 13 a and the first rotation shaft 12 is formed in a non-circular shape, the first cam 13 is not rotatable relative to the first rotation shaft 12. Similarly, since the first fixing member 11 and the first rotating shaft 12 are also fixed so as not to rotate relative to each other, the first cam 13 is also arranged so as not to rotate relative to the first fixing member 11. .

  The second fixing member 21 includes a right second fixing member 21R and a left second fixing member 21L, each of which is formed by bending a single metal plate into an L shape. Each of the right second fixing member 21R and the left second fixing member 21L is formed with a second fixing surface 12a that supports the second rotating shaft 22 as described later.

  When the second fixing member 21 is fixed to the monitor fixing surface 3b of the monitor 3, the second fixing surfaces 21a and 21a are arranged opposite to the positions parallel to each other while being orthogonal to the monitor fixing surface 3b. . A contact portion 21b is formed at the front end portion of the second fixed surface 21a.

  The second rotation shaft 22 is fixed so as not to rotate relative to the second fixing member 21 so as to be parallel to the first rotation shaft 12. Specifically, the second rotating shaft 22 is bridged between the right second fixing member 21R and the left second fixing member 21L by being inserted through both the second fixing surfaces 21a and 21a.

  A second cam 23 is fixed to the second rotating shaft 22. Specifically, as shown in FIG. 6 (b), the second cam 23 is formed with an insertion hole 23a penetrating in the axial direction, and the second rotating shaft 22 is inserted into the insertion hole 23a. The two rotation shafts 22 are fixed to the second fixing member 21. Since the insertion portion of the insertion hole 23 a and the second rotation shaft 22 is formed in a noncircular shape, the second cam 23 is not rotatable relative to the second rotation shaft 22. Similarly, since the second fixing member 21 and the second rotating shaft 22 are also fixed so as not to rotate relative to each other, the second cam 23 is also arranged so as not to rotate relative to the second fixing member 21. .

  One end of a cylindrical connecting member 31 is connected to the first fixing member 11 via the first rotating shaft 12 so as to be rotatable with respect to the first fixing member 11. The other end of the connecting member 31 is connected to the second fixing member 21 via the second rotating shaft 22 so as to be rotatable with respect to the second fixing member 21. Thereby, the 2nd fixing member 21 is connected with respect to the 1st fixing member 11 so that rotation is possible. That is, the monitor 3 is rotatably connected to the fixed portion 2. As shown in FIGS. 2 to 4, engagement protrusions 36 and 36 are formed on the rear portion of the connecting member 31 so as to protrude to the left and right. The engaging protrusion 36 is engaged with the guide groove 11 b by being inserted into the guide groove 11 b of the first fixing member 11. Thereby, the rotation angle of the connection member 31 with respect to the 1st fixing member 11 is controlled (refer FIG.8 and FIG.9). In this embodiment, as shown in FIGS. 2 and 5, the connecting member 31 is formed in a rectangular tube shape, but the connecting member 31 may be formed in a cylindrical shape.

  The connecting member 31 is provided with a cover 41 that covers the upper surface and both side surfaces of the connecting member 31. When the second fixing member 21 rotates with respect to the connecting member 31, the contact portion 21 b of the second fixing member 21 contacts the cover 41, so that the rotation angle of the second fixing member 21 with respect to the connecting member 31 is increased. Be regulated. (See FIG. 14). In addition, it is also possible to adopt a configuration in which the rotation angle of the second fixing member 21 with respect to the connecting member 31 is regulated by bringing the contact portion 21b into contact with the connecting member 31.

  A first slider 33 is accommodated on the first fixing member 11 side inside the connecting member 31. The first slider 33 is accommodated in the connecting member 31 so as to be movable in a direction approaching and separating from the first cam 13. A first cam surface 33 a is formed on the first slider 13 side of the first slider 33.

  A second slider 34 is accommodated on the second fixing member 21 side inside the connecting member 31. The second slider 34 is accommodated in the connecting member 31 so as to be movable in the direction of approaching and separating from the second cam 23. A second cam surface 34 a is formed on the second slider 23 side of the second slider 34.

  Inside the connecting member 31, a compression spring 35 (specifically, three compression springs 35 a, 35 b, and 35 c) is interposed between the first slider 33 and the second slider 34. The first slider 33 and the second slider 34 are urged away from each other by the urging force of the compression spring 35.

  According to the monitor hinge 1 according to the present embodiment, the rotating direction of the connecting member 31 with respect to the horizontal surface 2a (counterclockwise when viewed from the right side) and the rotating direction of the monitor fixing surface 3b with respect to the connecting member 31 (when viewed from the right side). The connecting member 31 and the monitor 3 can be rotated so that the clockwise direction is the opposite direction. Thereby, transition is possible between a closed state in which the horizontal surface 2a and the monitor fixing surface 3b are parallel as shown in FIG. 1 and an open state in which the monitor fixing surface 3b stands with respect to the horizontal surface 2a as shown in FIG. It is said.

  Next, a procedure for changing the monitor hinge 1 from the closed state to the open state will be described with reference to FIGS. First, as shown in FIGS. 7 to 9, the user rotates the connecting member 31 about the first rotation shaft 12 with respect to the first fixing member 11. At this time, the rotation angle of the connecting member 31 with respect to the horizontal plane 2a is the first imaginary line S1 shown in each drawing (a straight line that is on the horizontal plane 2a and orthogonal to the axial direction of the first rotation shaft 12 in plan view). And the second imaginary line S2 (a straight line in the axial direction of the connecting member 31). In the present embodiment, as shown in each drawing, the first maximum rotation angle of the connecting member 31 with respect to the horizontal surface 2a (the angle when the engagement protrusion 36 contacts one end of the guide groove 11b) α1 is set to about 30 °. Is done.

  In the present embodiment, as shown in FIGS. 6B and 9, the first cam 13 is the entire rotation region of the connecting member 31 from the horizontal surface 2a (that is, until the rotation angle becomes 0 ° to α1). In FIG. 5, the biasing force from the compression spring 35 is received via the first slider 33. More specifically, a part of the first cam 13 protrudes radially outward, and the first cam surface 33a of the first slider 33 is separated from the first cam 13 toward the lower side. It is formed obliquely with respect to the moving direction of one slider 33. When the connecting member 31 rotates, the first slider 33 approaches the first rotating shaft 12 until the rotating angle of the connecting member 31 from the horizontal surface 2a becomes α1 from 0 °. Thereby, the 1st cam 13 assists the rotation which the connection member 31 spaces apart from the horizontal surface 2a in the whole region of a rotation area | region.

  Next, as shown in FIGS. 10 to 12, the user rotates the monitor 3 and the second fixing member 21 around the second rotation shaft 22 with respect to the connecting member 31. At this time, the rotation angle of the monitor fixing surface 3b with respect to the connecting member 31 is the second imaginary line S2 and the third imaginary line S3 (shown on the monitor fixing surface 3b shown in each drawing, and is second in the plan view in the closed state). It is represented by an angle formed by a straight line orthogonal to the axial direction of the rotation shaft 22.

  In this embodiment, as shown in FIGS. 9 and 12, the shape of the second cam surface 34a of the second cam 23 and the second slider 34 is such that the rotation angle of the monitor fixing surface 3b with respect to the connecting member 31 is predetermined from 0 °. The distance between the second slider 34 and the second rotation shaft 22 is not changed until the angle β1 is reached.

  Furthermore, when the user rotates the monitor 3 and the second fixing member 21 as shown in FIGS. 12 and 15, the rotation angle of the monitor fixing surface 3b with respect to the connecting member 31 changes from the predetermined angle β1 to the second maximum rotation angle. The distance between the second slider 34 and the second rotating shaft 22 is reduced until it reaches β2 (the angle at which the contact portion 21b contacts the cover 41).

  More specifically, the second cam 23 is formed in an arc shape in which a portion of the rotation angle of the monitor fixing surface 3b with respect to the connecting member 31 from 0 ° to a predetermined angle β1 protrudes outward, and the second slider 23 The second cam surface 34a of 34 is formed obliquely with respect to the movement direction of the second slider 34 so that the upper part is separated from the second cam 23 as the upper part is directed upward, and the lower part is in the movement direction of the second slider 34. They are formed so as to be orthogonal to each other. For this reason, the second cam 23 has an urging force from the compression spring 35 via the second slider 34 at the open end portion of the monitor fixing surface 3 b in the rotation region of the monitor fixing surface 3 b from the connecting member 31. In response, the monitor fixing surface 3 b assists in turning away from the connecting member 31. This supports the weight of the monitor 3 in the open state, and prevents shaking and the like when the user touches the touch panel type monitor 3.

  In the present embodiment, the predetermined angle β1 is set to about 90 °, and the second maximum rotation angle β2 is set to about 105 °. That is, in the present embodiment, the monitor fixing surface 3b in the open state stands by about 75 ° that is the difference between the second maximum rotation angle β2 and the first maximum rotation angle α1 with respect to the horizontal surface 2a. Thus, the difference between the second maximum rotation angle β2 and the first maximum rotation angle α1 is set to be less than 90 degrees. That is, in the open state, the monitor 3 is arranged so that the display surface 3a faces slightly upward in the front.

  In the monitor hinge 1 according to the present embodiment, as described above, the first slider 33, the second slider 34, and the compression spring 35 are accommodated in the connecting member 31, and the first cam 13 disposed on the first rotating shaft 12 and A biasing force is applied via a second cam 23 disposed on the second rotating shaft 22. Thereby, since the structure of the rotation support part in the monitor hinge 1 can be simplified, the monitor hinge 1 can be made compact. Further, by adjusting the number of the compression springs 35 and the spring strength, the urging force by the monitor hinge 1 can be easily changed.

  In addition, the second cam 23 assists in turning the monitor fixing surface 3b away from the connecting member 31 only in the open end portion of the monitor fixing surface 3b in the rotation region of the monitor fixing surface 3b from the connecting member 31. It is configured to do. That is, since the second cam 23 does not assist the rotation of the monitor fixing surface 3b until the rotation angle of the monitor fixing surface 3b with respect to the connecting member 31 reaches the predetermined angle β1, it is possible to prevent the monitor 3 from being lifted in the closed state. Can do.

  Next, a monitor hinge 101 according to another embodiment will be described with reference to FIG. The monitor hinge 101 connects the fixed portion 2 and the touch panel type monitor 3 in the same manner as the monitor hinge 1 shown in FIG.

  As shown in FIG. 16, the monitor hinge 101 includes, as main components, a first fixing member 111 (111R / 111L), a first rotating shaft 112, first cams 113/113, and a second fixing member 121 ( 121R / 121L), the second rotating shaft 122, the second cams 123/123, the connecting members 131R / 131L, the first sliders 133R / 133L, the second sliders 134R / 134L, and the compression springs 135a / 135b. And guide members 137R and 137L. Hereinafter, it demonstrates in order.

  The first fixing member 111 includes a right first fixing member 111R and a left first fixing member 111L, each of which is formed by bending a single metal plate into an L shape. The first fixing member 111 is fixed to the horizontal surface 2 a in the fixing portion 2.

  The first rotation shaft 112 is fixed so as not to rotate relative to the first fixing member 111. Specifically, the first rotating shaft 112 is inserted into the right first fixing member 111R and the left first fixing member 111L, and is spanned between the right first fixing member 111R and the left first fixing member 111L. .

  Two first cams 113 and 113 are fixed to the first rotating shaft 112 so as not to rotate relative to each other. Similarly, since the first fixing member 111 and the first rotation shaft 112 are also fixed so as not to rotate relative to each other, the first cam 113 is also arranged so as not to rotate relative to the first fixing member 111. .

  The second fixing member 121 includes a right second fixing member 121R and a left second fixing member 121L, each of which is formed by bending a single metal plate into a U shape. The second fixing member 121 is fixed to the monitor fixing surface 3 b of the monitor 3. Cable insertion holes 121b and 121b are opened on the left and right outer sides of the right second fixing member 121R and the left second fixing member 121L.

  The second rotation shaft 122 is fixed so as not to rotate relative to the second fixing member 121 so as to be parallel to the first rotation shaft 112. Specifically, the second rotating shaft 122 is inserted into both the right second fixing member 121R and the left second fixing member 121L, so that the second rotating shaft 122 is interposed between the right second fixing member 121R and the left second fixing member 121L. It is bridged.

  Two second cams 123 and 123 are fixed to the second rotating shaft 122 so as not to be relatively rotatable. Similarly, since the second fixing member 121 and the second rotation shaft 122 are also fixed so as not to rotate relative to each other, the second cam 123 is also arranged so as not to rotate relative to the second fixing member 121. .

  One end of two cylindrical connecting members 131 </ b> R and 131 </ b> L connected to the first fixing member 111 through the first rotating shaft 112 so as not to be relatively displaceable rotates with respect to the first fixing member 111. Connected as possible. The second fixing member 121 is rotatably connected to the second fixing member 121 at the other end of the connecting members 131R and 131L via the second rotating shaft 122. Thereby, the 2nd fixing member 121 is connected with respect to the 1st fixing member 111 so that rotation is possible. That is, the monitor 3 is rotatably connected to the fixed portion 2.

  Guide members 137R and 137L in which cable insertion holes 137a and 137a are opened in the axial direction of the connecting members 131R and 131L are disposed on the left and right outer sides of the connecting members 131R and 131L. The cable insertion holes 137a and 137a can be inserted with a cable (not shown) connected to the monitor 3.

  The first sliders 133R and 133L are accommodated on the first fixing member 111 side inside the connecting members 131R and 131L. The first sliders 133R and 133L are accommodated in the connecting members 131R and 131L, respectively, so as to be movable in the direction of approaching and separating from the first cam 113. A first cam surface is formed on the first cam 113 side of the first sliders 133R and 133L.

  Second sliders 134R and 134L are accommodated on the second fixing member 121 side inside the connecting members 131R and 131L. The second sliders 134R and 134L are accommodated in the connecting members 131R and 131L, respectively, so as to be movable in the direction of approaching and separating from the second cam 123. A second cam surface is formed on the second cam 123 side of the second sliders 134R and 134L.

  Compression springs 135a and 135b are inserted between the first sliders 133R and 133L and the second sliders 134R and 134L inside the connecting members 131R and 131L. The first sliders 133R and 133L and the second sliders 134R and 134L are urged away from each other by the urging force of the compression springs 135a and 135b.

  According to the monitor hinge 101 according to the present embodiment, the rotating direction of the connecting members 131R and 131L with respect to the horizontal surface 2a (counterclockwise when viewed from the right side) and the rotating direction of the monitor fixing surface 3b with respect to the connecting members 131R and 131L ( The connecting members 131R and 131L and the monitor 3 can be rotated so that the direction is clockwise with respect to the right side view. Thereby, like the above-mentioned embodiment, it is possible to transition between a closed state in which the horizontal surface 2a and the monitor fixing surface 3b are parallel and an open state in which the monitor fixing surface 3b stands with respect to the horizontal surface 2a. Since the procedure for transitioning the monitor hinge 101 from the closed state to the open state is the same as that in the above embodiment, the description thereof is omitted.

  In the monitor hinge 101 according to the present embodiment, as described above, the first sliders 133R and 133L, the second sliders 134R and 134L, and the compression springs 135a and 135b are arranged in the axial direction (left-right direction) of the first rotating shaft 112. Two sets are arranged side by side. Thereby, it becomes easy to adjust the urging force generated in each. In the present embodiment, two sets of the first slider, the second slider, and the compression spring are provided, but it is also possible to adopt a configuration in which one set or three or more sets are provided.

  In the monitor hinge 101 according to the present embodiment, guide members 137R and 137L in which cable insertion holes 137a and 137a are opened are disposed on the left and right outer sides of the connecting members 131R and 131L. Thus, a cable (not shown) connected to the monitor 3 can be inserted into the cable insertion holes 137a and 137a, and the cable can be easily routed.

DESCRIPTION OF SYMBOLS 1 Monitor hinge 2 Fixing part 2a Horizontal surface 3 Monitor 3b Monitor fixing surface 11 1st fixing member 12 1st rotation shaft 13 1st cam 21 2nd fixing member 22 2nd rotation shaft 23 2nd cam 31 Connection member 33 1st Slider 34 Second slider 35 Compression spring

Claims (5)

A first fixing member fixed to a horizontal surface in the fixing portion;
A first rotation shaft fixed in a relatively non-rotatable manner with respect to the first fixing member;
A first cam fixed so as not to rotate relative to the first rotation shaft;
A second fixing member fixed to the monitor fixing surface formed on the back side of the display surface in the plate-shaped monitor;
A second rotation shaft fixed so as not to be relatively rotatable with respect to the second fixing member so as to be parallel to the first rotation shaft;
A second cam fixed so as not to rotate relative to the second rotation shaft;
The first fixed member is rotatably connected to the first fixed member, and the second fixed member is rotatably connected to the second fixed member. A tubular connecting member;
A first slider having a first cam surface formed on the side of the first cam, and being accommodated in the connecting member so as to be movable toward and away from the first cam;
A second slider formed on the side of the second cam and accommodated in the connecting member so as to be movable toward and away from the second cam;
A compression spring that is interposed between the first slider and the second slider and biases the first slider and the second slider away from each other.
By rotating the connecting member and the monitor so that the rotating direction of the connecting member with respect to the horizontal plane is opposite to the rotating direction of the monitor fixing surface with respect to the connecting member, the horizontal plane and the monitor A monitor hinge for connecting the monitor and the fixing portion so as to be capable of transition between a closed state in which the monitor fixing surface is parallel and an open state in which the monitor fixing surface stands with respect to the horizontal plane. ,
The first cam receives a biasing force from the compression spring via the first slider in the entire rotation region of the connection member from the horizontal plane, so that the connection member is separated from the horizontal plane. Help
The second cam receives a biasing force from the compression spring via the second slider at an open-side end portion of the monitor fixing surface in a rotation region of the monitor fixing surface from the connecting member. Accordingly, the monitor hinge assists the rotation of the monitor fixing surface away from the connecting member.   The monitor hinge according to claim 1, wherein a difference between a maximum rotation angle of the monitor fixing surface from the connection member and a maximum rotation angle of the connection member from the horizontal plane is set to be less than 90 degrees.   The monitor according to claim 1 or 2, wherein a plurality of sets of the first slider, the second slider, and the compression spring are arranged side by side in the axial direction of the first rotation shaft. Hinge.   The monitor hinge according to any one of claims 1 to 3, wherein the connecting member is provided with a guide member having a cable insertion hole opened in an axial direction of the connecting member. The connecting member is provided with a cover that covers the connecting member,
The monitor hinge according to any one of claims 1 to 4, wherein rotation of the second fixing member and the connecting member is regulated by the cover coming into contact with the second fixing member.

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