JP5613116B2 - Adjusting hinge - Google Patents

Description

This invention relates to a hinge which is utilized in the mounting of the door for opening and closing the door or passage of furniture, adjusting hinge the attached door, it is possible to position adjustment in the front-rear horizontal direction or vertical direction in the closed state About.

  The adjustment hinge is movable relative to at least one of the blades of the pair of blades pivotably supported by the support shaft in a direction along the plate surface of the blade plate and in a direction perpendicular to the support shaft. A mounting member is attached to the head, and a position adjusting means for adjusting the position of the mounting member with respect to the blades is also provided. As the position adjusting means, one using an eccentric cam or one using a rack and pinion (see, for example, Patent Document 1) is generally used, and position adjustment is performed within a range in which the adjusting screw is rotated forward and backward once. In either case, in order to hold the mounting member movably on one of the blade plates, two other members such as a seat plate and a cover plate are mounted so as to sandwich both of them.

JP 2001-271549 A

The conventional adjustment hinge has problems such as a small adjustment allowance, difficulty in fine adjustment, a large number of parts, and production of a dedicated eccentric cam and rack and pinion.
Therefore, the invention according to this application provides an adjustment hinge that can take a large adjustment allowance, is easy to fine-tune, has a small number of parts, does not require the manufacture of dedicated parts, and can be obtained relatively inexpensively. The purpose is that.

Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the adjustment hinge of the invention according to this application includes a first and second pair of blades 1 and 5 that are pivotally supported by a support shaft 2 so as to be openable and closable, and first and second It has the 2nd wing parts 26 and 27, and the 1st wing part 26 moves relative to the 2nd blade board 5 in the direction along the plate surface of the blade board 5 concerned, and the direction orthogonal to support axis 1 A mounting member 6 that can be mounted, a first movement adjusting means 7 that moves the first wing 26 of the mounting member 6 relative to the second blade plate 5 in the relative movement direction, and a second blade plate The first fixing means 8 for releasably fixing the first wing part 26 of the attachment member 6 to the desired relative position with respect to 5 and the second wing part 27 of the attachment member 6 to the second wing part 27 of the attachment member 6 A fixed vane plate 9 which is mounted so as to be movable relative to a direction along the plate surface and perpendicular to the support shaft 2; 7 and the second movement adjusting means 10 for moving the fixed blade 9 in the relative movement direction, and the second blade 27 of the attachment member 6 so that the fixed blade 9 can be released at a desired relative position. And second fixing means 11 for fixing. The first movement adjusting means 7 is a first bolt insertion formed so that a bolt can be inserted between the second vane plate 5 and the first wing portion 26 of the attachment member 6 in the relative movement direction of both. A first nut floating opening 33 formed in the second vane plate 5 and a first nut holding opening 34 formed in the first wing portion 26, located in the middle of the portion 31 and the bolt insertion portion 31. And a first drive nut 30 disposed in the nut floating opening 33 and the nut holding opening 34, and a first adjustment bolt 29 inserted into the bolt insertion portion 31 and screwed into the drive nut 30. The nut floating opening 33 receives the drive nut 30 along the bolt insertion portion 31 so as to be relatively movable with respect to the second blade 5 within a predetermined range, and the nut holding opening 34 receives the drive nut 30 in the first wing portion. 26 is configured so as to be non-rotatable about the axis and not to be axially movable relative to the axis. The second movement adjusting means 10 is a second bolt insertion portion 44 formed so that a bolt can be inserted between the second wing portion 27 of the attachment member 6 and the fixed wing plate 9 in the relative movement direction of both. A second nut floating opening 46 formed in the second blade portion 27 and a nut holding opening 47 formed in the fixed blade 9 in the middle of the bolt insertion portion 44, and the nut floating opening 46. And a second drive nut 40 disposed in the nut holding opening 47 and a second adjustment bolt 39 inserted through the second bolt insertion portion 44 and screwed into the second drive nut 40. The second nut floating opening 46 receives the second drive nut 40 along the second bolt insertion part 44 so as to be movable relative to the second wing part 27 within a predetermined range, and the second nut holding opening. 47 is configured to receive the second drive nut 40 so as not to rotate about the axis with respect to the fixed blade 9 and so as not to move in the axial direction.

  The other adjusting hinge of the invention according to this application includes a first slat 1 fixed to the fixed frame 51 and a first fulcrum 2 on one end side of the first slat 1 by a first support shaft 2. A connecting bracket 3 having a substantially U-shaped cross section of the axis 2 of the support shaft 2, a second blade 5 pivotally supported by the second support shaft 4 on the other end side of the connection bracket 3, The first and second wing portions 26 and 27 are orthogonal to each other, and the first wing portion 26 is in a direction along the plate surface of the blade plate 27 and orthogonal to the support shaft. An attachment member 6 mounted so as to be relatively movable in the direction, a first movement adjusting means 7 for moving the first wing portion 26 of the attachment member 6 in the relative movement direction with respect to the second blade 5, A first fixing means 8 for releasably fixing the first wing portion 26 of the attachment member 6 to the two blades 5 at a desired relative position; and an attachment portion The fixed wing plate 9 attached to the back surface of the door, and mounted on the second wing portion 27 of the sixth wing portion 27 in a direction along the plate surface of the wing portion 27 and in a direction orthogonal to the support shaft 4; Second movement adjusting means 10 for moving the fixed blade 9 in the relative movement direction with respect to the second wing 27 of the attachment member 6, and the fixed wing plate 9 with respect to the second wing 27 of the attachment member 6. And second fixing means 11 for releasably fixing at a desired relative position. The first movement adjusting means 7 is a first bolt insertion formed so that a bolt can be inserted between the second vane plate 5 and the first wing portion 26 of the attachment member 6 in the relative movement direction of both. A first nut floating opening 33 formed in the second blade 5 and a first nut holding opening 34 formed in the first wing portion, located in the middle of the bolt insertion portion 31. The first drive nut 30 disposed in the nut floating opening 34 and the nut holding opening 34 and the first adjustment bolt 29 inserted into the bolt insertion portion and screwed into the drive nut 7 are provided. The nut floating opening 33 receives the drive nut 30 along the bolt insertion portion 31 so as to be relatively movable with respect to the second blade 5 within a predetermined range, and the nut holding opening 34 receives the drive nut 30 in the first wing portion. 26 is configured so as to be non-rotatable about the axis and not to be axially movable relative to the axis. The second movement adjusting means 10 is a second bolt insertion portion 44 formed so that a bolt can be inserted between the second wing portion 27 of the attachment member 6 and the fixed wing plate 9 in the relative movement direction of both. A second nut floating opening 46 formed in the second blade portion 27 and a nut holding opening 47 formed in the fixed blade 9 in the middle of the bolt insertion portion 44, and the nut floating opening 46. And a second drive nut 40 disposed in the nut holding opening 46, and a second adjustment bolt 39 inserted through the second bolt insertion portion 44 and screwed into the second drive nut 40. The second nut floating opening 46 receives the second drive nut 40 along the second bolt insertion part 44 so as to be movable relative to the second wing part 27 within a predetermined range, and the second nut holding opening. 47 is configured to receive the second drive nut 40 so as not to rotate about the axis with respect to the fixed blade 9 and so as not to move in the axial direction.

  According to the adjustment hinge of the invention according to this application, adjustment is performed by moving the drive nuts 30 and 40 on the adjustment bolts 29 and 39, so that the adjustment allowance can be increased and fine adjustment is easy. Since the number of parts is small and standard parts on the market can be used, it is not necessary to produce dedicated parts.

It is a disassembled perspective view of the adjustment hinge which concerns on this invention. It is a perspective view of the adjustment hinge of FIG. It is a front view of the adjustment hinge of FIG. It is a top view of the adjustment hinge of FIG. It is a bottom view of the adjustment hinge of FIG. It is a side view of the adjustment hinge of FIG. It is a top view of the closed state of the door in the installation state of the adjustment hinge of FIG. It is a top view of the state which opened the door 90 degrees in the installation state of the adjustment hinge of FIG. It is a top view of the state which opened the door 180 degrees in the installation state of the adjustment hinge of FIG. It is a disassembled perspective view of the adjustment hinge which concerns on other embodiment of this invention.

  With reference to FIG. 1 thru | or FIG. 9, one Embodiment which applied this invention to the biaxial back hinge is described.

  In FIG. 1, the adjustment hinge is pivotally supported on the connection fitting 3 by the first blade 1, the connection fitting 3 pivotally supported on the blade 1 by the first support shaft 2, and the second support shaft 4. The second blade plate 5, the attachment member 6 assembled to the blade plate 5 so as to be movable in the front-rear direction, the first movement adjusting means 7 for adjusting the relative movement of the attachment member 6 in the front-rear direction, and the blade plate 5. On the other hand, a first fixing means 8 for fixing the attachment member 6 at a desired position, a fixed vane plate 9 mounted on the attachment member 6 so as to be movable in the left-right direction, and a relative movement adjustment of the fixed vane plate 9 in the left-right direction. 2 movement adjusting means 10 and a second fixing means 11 for fixing the fixed blade 9 to the attachment member 6 at a desired position.

  As shown in FIGS. 7 to 9, the first blade 1 is fixed to a fixed frame 51 such as a door frame, and the fixed blade 9 is fixed to the inner surface of the door 52. With this adjustment hinge, the door 52 can be opened from the closed position shown in FIG. 7 to the 180 ° open position shown in FIG. 9 through the 90 ° open position shown in FIG.

  In FIG. 1 thru | or FIG. 6, the 1st blade board 1 comprises the bearing cylinder part 12 in an end edge. A cutout portion 13 is provided in the middle of the bearing tube portion 12, and a nut member 14 is incorporated therein in a non-rotatable manner. A screw rod 15 for height adjustment is inserted from the lower end side of the bearing tube portion 12 and screwed into the nut member 14.

  The first support shaft 2 includes a flange portion 16 in the middle, and a lower half portion below the flange portion 16 is inserted into the bearing tube portion 12 from the upper end side. A rolling ball 17 is incorporated at the lower end of the support shaft 2 and abuts against the upper end of the screw rod 15. If the screw rod 15 is screwed in, the support shaft 2 will rise. The ball 17 reduces the frictional resistance between the support shaft 2 and the screw rod 15 and reduces the rotational operation force of the screw rod 15.

  The connection fitting 3 includes first and second side plate portions 18 and 19 that face each other in parallel, and a connection plate portion 20 that couples the base ends of both side plates in an orthogonal direction. The connecting fitting 3 is pivotally supported on one end side of the first blade 1 by the first support shaft 2 in the bearing tube portion 21 at the leading edge of the first side plate portion 18. Further, the bearing tube 22 at the tip edge of the second side plate 19 is pivotally supported by the second vane plate 5 by the second support shaft 4.

  The second vane plate 5 includes a bearing tube portion 23 that receives the support shaft 4 at an edge portion on one end side, and is attached to the outer surface of the side plate portion 19 of the connecting metal fitting 3 by the attached spring 24 so as to rotate. Be forced. On one surface of the blade 5, a guide protrusion 25 extending in the horizontal direction is provided.

  The attachment member 6 has first and second wing portions 26 and 27 that are orthogonal to each other. The first wing portion 26 includes a horizontal guide groove hole 28 slidably fitted to the guide protrusion 25 of the blade plate 5, and the blade plate 5 has a direction along the plate surface of the blade plate. And it is joined so that relative movement is possible in the orthogonal direction (front-back direction) with respect to the spindle 4.

  Between the blade 5 and the attachment member 6, there is a first movement adjusting means 7 for moving both in the relative movement direction (front-rear direction), and a first fixing means 8 for fixing both at a desired relative position. Provided. The movement adjusting means 7 includes an adjusting bolt 29 inserted between the blade plate 5 and the wing portion 26 of the mounting member 6 in the relative movement direction of the both, and a drive nut 30 into which the adjusting bolt 29 is screwed. The fixing means 8 includes a fixing bolt 38 that is screwed into the screw hole 37 of the blade plate 5 through the long hole 36 of the wing portion 26.

  That is, a first bolt insertion portion 31 is formed between the blade plate 5 and the wing portion 26 so that the bolt 29 can be inserted in the relative movement direction of both. The bolt insertion portion 31 includes a bolt insertion groove 32 formed by bending a part of the blade plate 5 into a substantially semi-cylindrical shape, and an opposed surface of the wing portion 26 facing the bolt insertion groove 32. In the middle of the bolt insertion portion 31, a nut floating opening 33 is formed on the blade plate 5 side, and a nut holding opening 34 is formed on the wing portion 26 side. The nut floating opening 33 receives the drive nut 30 along the bolt insertion part so as to be relatively movable with respect to the blade plate 5 within a predetermined range, and the nut holding opening 34 rotates the drive nut 30 around the axis with respect to the wing part 26. Accept non-rotatable and axially non-movable. The adjustment bolt 29 passes through the bolt insertion portion 31 and is screwed into the drive nut 30 and is prevented from coming off by a retaining ring 35 that is caulked to the tip portion.

  Therefore, by rotating the adjusting bolt 29 forward and backward, the drive nut 30 can be moved relative to the blade plate 5 along with the mounting member 6 in the front-rear direction, and the bolt 38 is tightened at a desired relative position. Can be fixed.

  The second wing portion 27 is joined to the fixed wing plate 9 so as to be relatively movable in a direction along the plate surface of the wing portion 27 and in a direction orthogonal to the support shaft 4 (left-right direction).

  Between the fixed wing plate 9 and the wing part 27, the second movement adjusting means 10 for moving both in the relative movement direction (left and right direction) and the second fixing means 11 for fixing both at a desired relative position. Provided.

  The movement adjusting means 10 includes an adjustment bolt 39 inserted between the fixed blade 9 and the blade portion 27 in the relative movement direction of the both, and a drive nut 40 into which the adjustment bolt 39 is screwed. The fixing means 11 includes a fixing bolt 43 that is screwed into the screw hole 42 of the fixed blade 9 through the long hole 41 of the blade portion 27.

That is, a second bolt insertion portion 44 is formed between the fixed blade 9 and the blade portion 27 so that the bolt 39 can be inserted in the relative movement direction of both. The bolt insertion portion 44 includes a bolt insertion groove 45 formed by bending a part of the fixed wing plate 9 in a substantially semi-cylindrical shape, an opposing surface of the wing portion 27 facing this, and both left and right end portions of the wing portion 27. And a pair of opposed brackets 48 formed on each other. In the middle of the bolt insertion portion 44, a nut floating opening 46 is formed on the wing portion 27 side, and a nut holding opening 47 is formed on the fixed wing plate 9 side. The nut floating opening 46 receives the drive nut 40 along the bolt insertion part 44 so as to be relatively movable within a predetermined range with respect to the wing part 27, and the nut holding opening 47 receives the drive nut 40 with respect to the fixed wing plate 9. Accepts rotation around the axis and relative movement in the axial direction. The adjustment bolt 39 passes through the bolt insertion portion 44, is screwed into the drive nut 40, and is prevented from coming off by a retaining ring 49 that is caulked to the tip portion.

  Therefore, by rotating the adjustment bolt 39 forward and backward, the drive nut 40 can be moved relative to the wing 27 together with the fixed blade 9 in the left-right direction, and the bolt 43 is tightened at a desired relative position. Both can be fixed.

  Since the front / rear and left / right position adjustment is performed by moving the drive nuts 30 and 40 on the adjustment bolts 29 and 39, the adjustment allowance is large and fine adjustment is easy. The number of parts is small, and it is not necessary to manufacture dedicated parts such as the adjusting bolts 29 and 39 and the drive nuts 30 and 40, and can be obtained at low cost by using commercially available standard parts.

  FIG. 10 shows an adjustment hinge according to another embodiment of the present invention. In this embodiment, the connecting fitting 3 in the previous embodiment is omitted, and the second blade 5 is directly pivotally supported by the support shaft 2. Since the other specific configuration is the same as that of the previous embodiment, the same components are denoted by the same reference numerals and the description thereof is omitted. Also in this embodiment, the position of the fixed wing plate 9 fixed to the door can be adjusted front and rear, left and right, and up and down with respect to the first blade 1 fixed to the fixed frame.

DESCRIPTION OF SYMBOLS 1 1st blade 2 1st spindle 3 Connecting metal fitting 4 2nd spindle 5 2nd blade 6 Attachment member 7 1st movement adjustment means 8 1st fixing means 9 Fixed blade board 10 2nd Movement adjusting means 11 second fixing means 12 bearing tube portion 13 notch portion 14 nut member 15 screw rod 16 flange portion 17 ball 17 first side plate portion 19 second side plate portion 20 connection plate portion 21 bearing tube portion 22 Bearing tube portion 23 Bearing tube portion 24 Spring 25 Guide protrusion 26 First blade portion 27 Second blade portion 28 Guide groove hole 29 Adjustment bolt 30 Drive nut 31 First bolt insertion portion 32 Bolt insertion groove 33 Nut free opening 34 Nut holding opening 35 Retaining ring 36 Long hole 37 Screw hole 38 Fixing bolt 39 Adjustment bolt 40 Drive nut 41 Long hole 42 Screw hole 43 Fixing bolt 44 Second bolt insertion portion 45 Bolt insertion groove 46 Nut free opening 47 Nut holding opening 48 Bracket 51 Fixed frame 52 Door

Claims (4)

A first and a second pair that are pivotally supported so as to be openable and closable by a support shaft that is inserted into a bearing tube portion that is formed by winding vertical edges that face each other so as to protrude toward the opposing surfaces. Slats and
There are first and second wing portions that are orthogonal to each other, and the first wing portion moves relative to the second blade plate in a direction along the plate surface of the blade plate and in a direction orthogonal to the support shaft. A mounting member that can be mounted;
First movement adjusting means for moving the first wing portion of the attachment member in the relative movement direction with respect to the second blade,
First fixing means for releasably fixing the first wing portion of the mounting member to the second blade plate at a desired relative position;
A fixed wing plate mounted on the second wing portion of the mounting member in a direction along the plate surface of the wing portion so as to be relatively movable in a direction orthogonal to the support shaft;
Second movement adjusting means for moving the fixed blade in the relative movement direction with respect to the second wing of the mounting member;
A second fixing means for releasably fixing the fixed vane plate to the second wing portion of the attachment member at a desired relative position;
The first movement adjusting means is a first bolt insertion portion formed so that a bolt can be inserted between the second blade plate and the first wing portion of the mounting member in the relative movement direction of both. A first nut floating opening formed in the second blade plate and a first nut holding opening formed in the first wing portion, located in the middle of the bolt insertion portion, the nut floating opening, A first drive nut disposed in the nut holding opening; and a first adjustment bolt inserted through the bolt insertion portion and screwed into the drive nut;
The nut loosening opening receives the drive nut along the bolt insertion portion so as to be relatively movable with respect to the second blade plate within a predetermined range, and the nut holding opening receives the drive nut in the first blade. It is configured to accept the part so that it cannot rotate around the axis and cannot move relative to the axis.
The second movement adjusting means includes a second bolt insertion portion formed so that a bolt can be inserted between the second wing portion of the mounting member and the fixed blade plate in the relative movement direction of both, A second nut floating opening formed in the second wing portion and a second nut holding opening formed in the fixed blade plate located in the middle of the bolt insertion portion, and in the nut floating opening and the nut holding opening And a second adjustment bolt inserted into the second bolt insertion portion and screwed into the second drive nut.
The second nut floating opening receives the second drive nut along the second bolt insertion portion so as to be movable relative to the second wing portion within a predetermined range, and holds the second nut. The opening is configured to receive the second drive nut non-rotatable about the axis relative to the fixed vane and not axially movable;
The first bolt insertion portion includes a bolt insertion groove formed on a joint surface side of the second blade with the first wing portion of the mounting member, and a first opposed to the bolt insertion groove. Consists of the wing part facing surface,
The second bolt insertion portion includes a bolt insertion groove formed on a side of the fixed blade that is joined to the second wing portion of the mounting member, and a second wing portion facing the bolt insertion groove. Of the opposite surface,
The bolt insertion groove of the second vane plate is formed by bending a part of the second vane plate into a substantially semi-cylindrical shape so as to protrude to the opposite surface side of the bolt insertion groove,
The bolt insertion groove of the fixed wing plate is formed by bending a part of the fixed wing plate into a substantially semi-cylindrical shape so as to protrude to the opposite surface side of the bolt insertion groove . The support shaft has a flange in the middle, the lower half is supported by the first blade, the upper half is supported by the second blade,
The first blade has the bearing tube portion for inserting the lower half portion of the support shaft at one end edge,
The second blade has the bearing tube portion for inserting the upper half of the support shaft at one end edge,
A nut member that receives the lower end portion of the support shaft is fixed in the middle of the bearing tube portion of the first blade,
The upper part of the screw rod inserted from the lower end side of the bearing tube portion is screwed to the nut member, the lower end of the support shaft comes into contact with the upper end of the screw rod, and the screw shaft moves up and down together with the support shaft. The adjustment hinge according to claim 1, wherein the second blade can be adjusted up and down. A first vane fixed to the fixed frame;
A connecting fitting that is pivotally supported on one end side of the first blade by the first support shaft on one end side, and the cross-sectional shape perpendicular to the axis of the support shaft is substantially U-shaped;
A second blade that is pivotally supported by a second spindle on the other end of the coupling fitting;
There are first and second wing portions that are orthogonal to each other, and the first wing portion moves relative to the second blade plate in a direction along the plate surface of the blade plate and in a direction orthogonal to the support shaft. A mounting member that can be mounted;
First movement adjusting means for moving the first wing portion of the attachment member in the relative movement direction with respect to the second blade,
First fixing means for releasably fixing the first wing portion of the mounting member to the second blade plate at a desired relative position;
A fixed wing plate that is attached to the second wing portion of the mounting member in a direction along the plate surface of the wing portion, and is relatively movable in a direction orthogonal to the support shaft, and is fixed to the back surface of the door;
Second movement adjusting means for moving the fixed blade in the relative movement direction with respect to the second wing of the mounting member;
A second fixing means for releasably fixing the fixed vane plate to the second wing portion of the attachment member at a desired relative position;
The first movement adjusting means is a first bolt insertion portion formed so that a bolt can be inserted between the second blade plate and the first wing portion of the mounting member in the relative movement direction of both. A first nut floating opening formed in the second blade plate and a first nut holding opening formed in the first wing portion, located in the middle of the bolt insertion portion, the nut floating opening, A first drive nut disposed in the nut holding opening; and a first adjustment bolt inserted through the bolt insertion portion and screwed into the drive nut;
The nut loosening opening receives the drive nut along the bolt insertion portion so as to be relatively movable with respect to the second blade plate within a predetermined range, and the nut holding opening receives the drive nut in the first blade. It is configured to accept the part so that it cannot rotate around the axis and cannot move relative to the axis.
The second movement adjusting means includes a second bolt insertion portion formed so that a bolt can be inserted between the second wing portion of the mounting member and the fixed blade plate in the relative movement direction of both, A second nut floating opening formed in the second wing portion and a second nut holding opening formed in the fixed blade plate located in the middle of the bolt insertion portion, and in the nut floating opening and the nut holding opening And a second adjustment bolt inserted into the second bolt insertion portion and screwed into the second drive nut.
The second nut floating opening receives the second drive nut along the second bolt insertion portion so as to be movable relative to the second wing portion within a predetermined range, and holds the second nut. The opening is configured to receive the second drive nut non-rotatable about the axis relative to the fixed vane and not axially movable;
The connection fitting includes first and second side plate portions whose inner side faces are parallel to each other, and a connection plate portion that connects the base ends of both side plates in an orthogonal direction, and is perpendicular to the first side plate portion. Is pivotally supported on one end side of the first vane plate by the first support shaft inserted through a bearing tube portion formed by winding in a cylindrical shape so as to protrude the outer edge side of the A vertical tip edge of the side plate portion of the side plate is pivotally supported on the second blade by the second support shaft inserted through a bearing tube portion formed by being wound into a cylindrical shape so as to protrude outward.
The first bolt insertion portion includes a bolt insertion groove formed on a joint surface side of the second blade with the first wing portion of the mounting member, and a first opposed to the bolt insertion groove. Consists of the wing part facing surface,
The second bolt insertion portion includes a bolt insertion groove formed on a side of the fixed blade that is joined to the second wing portion of the mounting member, and a second wing portion facing the bolt insertion groove. Of the opposite surface,
The bolt insertion groove of the second blade is formed by bending a part of the second blade into a substantially semi-cylindrical shape so as to protrude to the opposite surface side of the bolt insertion groove,
The bolt insertion groove of the fixed blade is formed by bending a part of the fixed blade into a substantially semi-cylindrical shape so as to protrude to the opposite surface side of the bolt insertion groove,
The adjustment hinge, wherein the second blade is always urged to rotate in a direction to be joined to the outer surface of the second side plate of the coupling metal by an attached spring. The first support shaft has a flange in the middle, the lower half is supported by the first blade, and the upper half is supported by the first side plate of the coupling metal,
The first blade has the bearing tube portion for inserting the lower half of the first support shaft at one end edge,
The first side plate portion has the bearing tube portion for inserting the upper half portion of the first support shaft at a tip edge,
A nut member that receives the lower end portion of the first support shaft is fixed in the middle of the bearing tube portion of the first blade,
An upper portion of a screw rod inserted from the lower end side of the bearing tube portion is screwed onto the nut member, the lower end of the first support shaft abuts on the upper end of the screw rod, and the support is moved by raising and lowering the screw rod. The adjustment hinge according to claim 3, wherein the connection fitting can be adjusted up and down together with the shaft .

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