JP2013072180A - Pivot hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pivot hinge that facilitates fitting of a door to a door frame, prevents a finger from being caught by a suspension source, and enables the door to be moved and adjusted in three axial directions for the door frame after fitting.SOLUTION: There is provided a pivot hinge 12 which supports a door 13 swingably to a door frame 11, the pivot hinge having a base 31 having a lower hinge part 30 fitted to a lower end on one side of the door frame, the lower hinge part being fitted in a recessed part 13b formed below an end surface on a suspension-source side of the door; and a fixed shaft part 32 fixed at a lower-end position on one side of the door frame corresponding to the base. A vertical shaft 32b of the fixed shaft part has a spherical part 32c at an upper end, a shaft holder 36 receiving the vertical shaft on the base has a recessed part 36b corresponding to the spherical part, and the vertical shaft 32b is supported by the shaft holder to rotate within a thickness of the door and to swing in three axial directions.

Description

  The present invention relates to a pivot hinge that pivotally supports a door so that it can be opened and closed with respect to a door frame of an opening.

2. Description of the Related Art Conventionally, for example, a so-called hinged door type door that is swingably supported by a hinge on one side of a door frame that defines an opening is often used as an interior door of a house.
Conventionally, flat hinges, hidden hinges and outset pivot hinges have been mainstream as hinges for pivotally supporting such hinged doors, and have been used for a long time.
For example, inset pivot hinges are used in public swing doors such as toilet booths.

  However, the flat hinge is a so-called outset type in which the swinging shaft is located outside the door, and has a problem of pinching the suspending finger because the suspending side opens greatly when opened. Further, when the door is attached to the door frame, it is necessary to lift the door greatly in parallel to the door frame, and therefore, particularly in the case of a heavy door, the attaching operation becomes difficult.

In addition, the hidden hinge is excellent in design and has a small external projection size from the wall and good appearance, but there is a risk of pinching of the hung finger.
Furthermore, although the outset pivot hinge is similarly excellent in design, the outer projecting dimension from the wall is increased, so that the appearance is impaired and there is a problem of pinching of the hanging base finger.

  On the other hand, the inset pivot hinge has a small projecting dimension from the wall, has a good appearance, and reduces the problem of pinching of the suspending finger. Therefore, the above-mentioned flat hinge, hidden hinge and outset Compared to pivot hinges, it is superior in safety, but generally has a structure in which the shaft is housed in the door and protrudes outward by a spring member, etc., so installation requires at least two people It is difficult to work and there is a problem in rigidity, and it is difficult to pivot a heavy door.

  In any type of hinge, it is difficult to adjust the position of the door in the triaxial direction with respect to the door frame after the door is attached to the door frame. Therefore, in order to increase the door mounting accuracy with respect to the door frame, it is necessary to increase the door frame and door dimensional accuracy, as well as the door frame and door hinge mounting accuracy, which increases the component cost and assembly cost. End up.

  In view of the above, the present invention has an object to provide a pivot hinge that can be easily attached to a door frame with a simple structure.

  According to the configuration of the present invention, the above object is a pivot hinge that swingably supports the door with respect to the door frame, and has a lower hinge portion attached to the lower end on one side of the door frame. The lower hinge part has a base attached in a recessed part formed at the lower end surface of the door suspending side, and a fixed shaft part fixed to a lower end position on one side of the door frame corresponding to the base. The vertical shaft of the fixed shaft portion has a sphere at the upper end, the shaft holder that receives the vertical shaft in the base has a recess corresponding to the sphere, and the vertical shaft can be rotated within the thickness of the door by the shaft holder In addition, this is achieved by a pivot hinge that is supported so as to be swingable in three axial directions.

  In the pivot hinge according to the present invention, preferably, the vertical shaft of the fixed shaft portion has a base portion and a support portion including a spherical portion, and the support portion is screwed into a screw portion extending in the vertical direction provided in the base portion. By doing so, it can be adjusted up and down with respect to the base.

  In the pivot hinge according to the present invention, the base portion preferably has a spanner holding structure for holding a spanner for rotating the support portion.

  The pivot hinge according to the present invention preferably has an upper hinge portion that is attached to the upper end of one side of the door frame, and the upper hinge portion is a recess formed on the upper end surface of the door hanging side. And a fixed shaft portion fixed at one side upper end position of the door frame corresponding to the base, and the vertical shaft of the fixed shaft portion in the upper hinge portion is in the upper hinge portion. The shaft holder of the base is held so as to be rotatable within the thickness of the door and movable up and down.

  In the pivot hinge according to the present invention, preferably, the base in the lower hinge portion and the upper hinge portion can adjust the movement of the shaft holder holding the vertical axis of the corresponding fixed shaft portion in two horizontal directions. I support it.

  The pivot hinge according to the present invention preferably supports the shaft holder via a first adjustment screw in which the base in the lower hinge portion and the upper hinge portion extends in the left-right direction parallel to the door surface. The shaft holder can be moved and adjusted in the left-right direction with respect to the base by turning the first adjusting screw.

  The pivot hinge according to the present invention preferably has a second adjusting screw and a second adjusting screw in which the base in the lower hinge portion and the upper hinge portion extends in the left-right direction parallel to the surface of the door. The shaft holder is supported via the rack and pinion mechanism provided on the shaft, and the shaft holder can be swung in the longitudinal direction perpendicular to the door surface by turning the second adjustment screw. It is.

  In the pivot hinge according to the present invention, preferably, the rack and pinion mechanism is provided on the opposite side of the rack, and elastically abuts against the pinion to press the pinion toward the rack and brake the rotation of the pinion. An elastic member is provided.

  In the pivot hinge according to the present invention, preferably, the base of the upper hinge portion is detachably mounted in a cup fixed in the recessed portion of the door, and is fixedly held at the mounting position by the lock mechanism. The lock member is arranged vertically near the rear end of the base and a lever extending back and forth below the base, and the lock member is supported so as to be movable in the vertical direction within the base. When raised, the upper end engages with the upper rear end of the cup, the lever is supported on the base so as to be swingable around the horizontal axis in the middle in the front-rear direction, and the rear end is the lower end of the lock member. An elastic member that is disposed on the lower side and biases the front end downward is provided. When the front end of the lever is moved downward by the elastic member, the engaging protrusion that engages the cup is located near the front end. I have.

  In the pivot hinge according to the present invention, preferably, the lower end of the engaging protrusion and the upper end of the lock member are provided with a taper on the rear side.

  In the pivot hinge according to the present invention, the upper hinge portion and the lower hinge portion are preferably composed of the same parts except for the vertical shaft and the shaft holder of the fixed shaft portion, respectively.

With the above configuration, with respect to the lower hinge portion, the base is attached in the recessed portion formed at the lower end surface of the door suspension base side, and the fixed shaft portion is attached at the lower end position on one side of the door frame. Further, with respect to the upper hinge portion, the fixed shaft portion is attached to the upper end position on one side of the door frame in a state where the fixed shaft portion is incorporated into the base.
From this state, align the shaft holder exposed at the lower end of the door with the fixed shaft part on the door frame side while tilting the door with respect to the door frame so that the upper part of the door does not hit the upper edge of the door frame, It is made to fit in the spherical part of the upper end.
Then, while swinging the door relative to the door frame around the sphere in the lower hinge, attach it to the upper end of one side of the door frame in the recessed part formed on the upper end surface of the door suspension side. The base of the upper hinge part currently inserted is inserted, and a door erects with respect to a door frame. Thereby, the base of the upper hinge part is attached in the recessed part of the corresponding door, and the operation of attaching the door to the door frame is completed.

Therefore, the door is tilted and the door is lifted to the height of the sphere portion of the fixed shaft portion fixed to the lower end of the door frame, and the shaft holder of the lower hinge portion is moved to the sphere portion at the upper end of the vertical portion of the fixed shaft portion. After fitting, the base of the upper hinge part is simply attached to the recessed part at the upper end position on one side of the door while swinging the door, and the lower hinge part and the upper hinge part are used. Since the door can be attached, even if the door is heavy, the door can be easily and easily attached by one person.
Also, since the vertical axis of the fixed shaft portion is located within the thickness of the door, it is configured as a so-called inset pivot hinge, and the gap on the suspension side does not change during the door opening and closing process. The occurrence of pinching of fingers is suppressed and safety is improved.

The vertical shaft of the fixed shaft portion has a base portion and a support portion including a spherical body portion, and the support portion can be adjusted up and down with respect to the base portion by screwing with a screw portion extending in the vertical direction provided in the base portion. In this case, in the fixed shaft portion of the lower hinge portion, the support portion moves in the vertical direction with respect to the base portion by rotating the support portion with respect to the base portion. To adjust the position in the vertical direction.
In this case, in the upper hinge part, the door side shaft holder supports the vertical axis on the door frame side so as to be movable up and down, so the vertical position adjustment by the support part and the base part in the lower hinge part There is nothing to prevent it.

  When the base has a spanner holding structure that holds a spanner for rotating the support part, it is easy to use a spanner with the support part held in the spanner holding structure without preparing a separate tool. The vertical position of the door can be adjusted, and the spanner held by the spanner holding structure is positioned between the support portion and the base portion, so that the axial height of the support portion adjusted in the vertical direction can be reduced. It is prevented from changing with the load from the door.

  The bases in the lower hinge part and the upper hinge part support the shaft holders that hold the vertical axes of the corresponding fixed shaft parts so that they can be moved and adjusted in the horizontal biaxial direction. The base in the hinge part supports the shaft holder via a first adjustment screw extending in the left-right direction parallel to the surface of the door, and the shaft with respect to the base is turned by turning the first adjustment screw. The holder can be moved and adjusted in the left-right direction, and the second adjustment screw in which the base in the lower hinge part and the upper hinge part extends in the left-right direction parallel to the surface of the door, and the second adjustment. The shaft holder is supported via a rack and pinion mechanism provided on the screw. By rotating the second adjustment screw, the shaft holder can be swung in the longitudinal direction perpendicular to the door surface with respect to the base. If possible Can be position adjustment in the horizontal biaxial direction the door after mounting to the door frame. Accordingly, the position of the door can be adjusted in the triaxial direction with respect to the door frame together with the vertical position adjustment by screwing the base portion and the support portion in the lower hinge portion described above.

  When the rack and pinion mechanism is provided on the opposite side of the rack and includes an elastic member that presses the pinion toward the rack by elastically contacting the pinion and brakes the rotation of the pinion. When the pinion is securely meshed with the rack, the rack and pinion mechanism is reliably operated, and after the operation, the rotation of the pinion is braked by the elastic member, so that the position adjustment in the front-rear direction is shifted. There is no such thing.

  The base of the upper hinge part is detachably mounted in a cup fixed in the recessed part of the door, and is fixedly held in the mounting position by the lock mechanism, and the lock mechanism is arranged vertically near the rear end of the base. And a lever extending back and forth below the base. The lock member is supported so as to be movable in the vertical direction within the base, and when it is lifted, its upper end is the rear end of the cup. The lever engages with the upper portion, and is supported by the base so as to be swingable around the horizontal axis in the middle in the front-rear direction. The rear end is disposed below the lower end of the lock member, and the front end is If the lever has an elastic member that urges downward, and the lever has an engaging protrusion that engages the cup when the front end of the lever is moved downward by the elastic member, the tension of the elastic member On the lever against When the base of the upper hinge part is inserted into the cup in the recessed part of the door, the lock member is retracted downward and smoothly accommodated in the cup, and the base is completely accommodated in the cup. In this state, the front end of the lever is moved downward by the tension of the elastic member, whereby the lock member is lifted upward, the upper end of the lock member is engaged with the upper rear end of the cup, and the engagement protrusion at the front end of the lever is Engage with.

Therefore, the base is engaged with the cup diagonally in the longitudinal section by engaging the upper end of the locking member at the upper part of the rear end and the engaging protrusion of the lever at the lower part of the front end. . As a result, when the load due to the weight of the door acts on the cup, the base and the cup are securely engaged against the moment that acts to cause the base to fall off the cup, so that the base is surely removed from the cup. Will be prevented.
Also, even if the lever front end is accidentally lifted upward in the door mounting state, a load due to the weight of the door acts on the upper end of the lock member and is held in the engaged state by frictional force. There is no such thing as falling off the upper rear end. On the other hand, when removing the door, if the door is supported and the load due to the weight of the door does not act on the cup, the lock member will fall by its own weight and fall off the upper part of the rear end of the cup. It is possible to easily remove the door.

  When the lower end of the engaging protrusion and the upper end of the lock member have a taper on the rear side, when the base is inserted into the cup, the front end of the lever is lifted upward along this taper. The base can be smoothly inserted into the cup and attached without manually lifting the front end of the lever upward.

  When the upper hinge part and the lower hinge part are composed of the same parts except for the vertical shaft and the shaft holder of the fixed shaft part, respectively, the upper hinge and the lower hinge are shared parts. By comprising, the manufacturing cost of each component can be reduced by the mass production effect, and the manufacturing cost of each hinge part can also be reduced.

  In this way, according to the present invention, the door can be easily attached to the door frame with a simple configuration, and pinching of the hanging finger can be prevented.

It is a schematic front view in the open state which shows the structure of the door structure incorporating one Embodiment of the pivot hinge by this invention. It is a partially broken schematic plan view which shows the door structure of FIG. It is a disassembled perspective view which expands and shows the structure of the upper hinge part in the door structure of FIG. 3A is a plan view, FIG. 3B is a side view, FIG. 3C is a front view, FIG. 3D is a bottom view, FIG. 3E is a cross-sectional view in the left-right direction, and FIG. FIG. It is sectional drawing of the front-back direction which expands and shows the hinge part of the upper part of FIG. FIG. 6 is an enlarged cross-sectional view in the front-rear direction showing in more detail the rack and pinion structure in the upper hinge portion of FIG. It is a disassembled perspective view which expands and shows the structure of the lower hinge part in the door structure of FIG. 8A is a front view, FIG. 8B is a side view, FIG. 8C is a plan view, and FIG. 8D is a cross-sectional view in the left-right direction. It is a partially broken enlarged plan view which expands and shows the attachment position of the fixed shaft part with respect to the door frame of the upper hinge part in the door structure of FIG. It is a partial expansion perspective view which shows the 1st step of the attachment process with respect to the door frame of the door in the door structure of FIG. It is a partial expansion perspective view which shows the 2nd step of the attachment process with respect to the door frame of the door in the door structure of FIG.

1 and 2 show the configuration of the main part of a door structure incorporating an embodiment of a pivot hinge according to the present invention.
As shown in FIGS. 1 and 2, the door structure 10 includes, for example, a door frame 11 that defines an opening provided at the entrance of a room in a house, and a pivot hinge 12 with respect to the door frame 11. And a door 13 supported so as to be swingable.

Here, as shown in FIG. 1, the pivot hinge 12 includes an upper hinge portion 20 attached to the upper end on one side of the door frame 11 and a lower hinge attached to the lower end on the one side of the door frame 11. Part 30.
These upper and lower hinge portions 20 and 30 are configured as so-called inset type pivot hinges, each of which has a swing shaft located in the door 13, as shown in FIG. Yes.

  As shown in FIGS. 3 and 4, the upper hinge portion 20 includes a base 21 attached in a recessed portion 13 a formed on the upper end surface of the door 13 on the suspending side, and a door frame corresponding to the base 21. 11 and a fixed shaft portion 22 fixed to an upper end position on one side.

The base 21 is made of, for example, ZDC, is formed in a hollow shape by walls on both sides in the front-rear direction (X direction) of the door 13, and is attached to the corresponding recessed portion 13 a of the door 13. As will be described later, it is detachably mounted and lockable by the lock mechanism 29.
Further, one side (left side in FIG. 3) of the base 21 in the left-right direction (Y direction) is closed by the cover 24.
The cover 24 is formed so that the surface thereof is curved in accordance with the shape of the end surface of the door 13 on the suspending side. That is, as shown in FIG. 2, the end surface of the door 13 has a semicircular outer shape in a horizontal section, and the cover 24 is formed so as to be aligned with the semicircular outer shape. Has been.

The base 21 includes an adjustment member 25 that is movable in the Y direction below the hollow portion. The adjustment member 25 has a left / right adjustment screw 25a disposed along the Y direction. The left / right adjustment screw 25a is supported so as to be rotatable with respect to the adjustment member 25 and not to move in the Y direction. Yes. Here, the adjustment member 25 is formed to extend downward so that the left side portion in FIG. 3 receives the left / right adjustment screw 25a.
The left / right adjustment screw 25a is provided at a portion extending below the adjustment member 25 so that the screw head is exposed from the end surface of the adjustment member 25 on the suspending side of the door 13 through the window 24a of the cover 24. It is inserted through a through hole 25b extending in the Y direction, and is held by an E ring 25c so that it can rotate and does not move in the axial direction.
Further, the left and right adjustment screw 25 a has a screw portion 25 d on its tip side screwed into a screw hole 21 a provided in the base 21 and extending in the Y direction. Accordingly, the adjustment member 25 is moved and adjusted in the Y direction with respect to the base 21 by rotating the left and right adjustment screw 25a.

On the other hand, the base 21 includes a shaft holder 26 on the upper side of the hollow portion. The shaft holder 26 is made of, for example, ZDC, and is supported so as to be swingable around a king pin 26 a that vertically penetrates the shaft holder 26 and the base 21 in the vicinity of the other side.
The shaft holder 26 includes a bearing portion 26b that receives a vertical shaft 22b of the fixed shaft portion 22 to be described later on the upper surface, and a rack 26c that extends in the X direction at the lower end of one side edge.
The bearing portion 26b receives the vertical shaft 22b of the fixed shaft portion 22 and supports it so as to be rotatable and vertically movable.

  The front / rear adjustment screw 27 for moving and adjusting the shaft holder 26 in the front / rear direction has a screw head on the suspension base side of the door 13 of the adjustment member 25 with respect to a hole 25e provided in the adjustment member 25 extending in the Y direction. It is inserted through the window 24b of the cover 24 so as to be exposed from the end face of the cover 24, and is held by the E ring 27a so as to be rotatable with respect to the adjustment member 25 and not to move in the axial direction.

As shown in detail in FIG. 5, the front / rear adjustment screw 27 is provided with a pinion 27b adjacent to the head thereof. The pinion 27b meshes with the rack 26c of the shaft holder 26 described above, and the rack and pinion The mechanism is configured.
Accordingly, by rotating the front / rear adjustment screw 27, the shaft holder 26 swings around the king pin 26a so that the front end provided with the bearing portion 26b moves substantially in the X direction.

Here, the regulating member 25 is adjacent to the exposed pinion 27b of the left / right adjusting screw 25a on the end surface of the door suspension base side of the adjusting member 25, on the opposite side to the rack 26c of the shaft holder 26, that is, on the lower side. Is provided.
The regulating member 28 is made of an elastic material, and as shown in FIG. 6, on the side facing the pinion 27b, the regulating member 28 is formed in a substantially arc shape corresponding to the outer shape of the pinion 27b. A small recess 28a corresponding to each tooth 27c is provided. In the case of illustration, this small recessed part 28a is formed with the half pitch with respect to the pinion 27b which has the eight teeth | gears 27c.

Thereby, the regulating member 28 is engaged with the lower side of the pinion 27b and elastically abuts against the pinion 27b, thereby pressing the pinion 27b upward, that is, against the rack 26c. Accordingly, at the time of front / rear adjustment, the regulating member 28 is elastically deformed to allow the operation of the pinion 27b, the rack / pinion mechanism is operated, and the Y direction adjustment by the front / rear adjustment screw 27 is performed.
Further, at the time of non-adjustment, the regulating member 28 is elastically engaged with the pinion 27b, so that the rotation of the pinion 27b is braked, and the longitudinal adjustment is not performed carelessly. At that time, since the pinion 27b is locked by the restricting member 28 at a position corresponding to the half pitch of the teeth, fine adjustment is possible as compared with the case where the pitch of the recesses 28a is the same as the pitch of the pinion 27b.

The fixed shaft portion 22 includes a base portion 22a and a vertical shaft 22b.
The base portion 22a is made of, for example, SUS303, and is attached to the upper edge of the door frame 11 with an attachment screw (not shown).

Further, the vertical shaft 22b is made of, for example, SUS303, is provided so as to protrude downward from the vicinity of the center of the base portion 22a, and is formed in a substantially cylindrical shape.
Here, at the time of assembly, the vertical shaft 22b is fitted into the bearing portion 26a of the shaft holder 26, and is supported so as to be rotatable and movable in the vertical direction.

As shown in FIG. 3, the lock mechanism 29 includes a lock member 29a and a lever 29b.
The lock member 29a is made of, for example, SECC, and extends in the vertical direction near the rear end (right end in FIG. 3) in the base 21 and is supported so as to be movable in the vertical direction.
Further, the upper end 29c of the lock member 29a has a taper on the rear side.
When the lock member 29a moves upward, the upper end 29c of the lock member 29a engages with the engagement portion 23a provided on the upper rear end of the cup 23 attached to the corresponding door 13 side and moves downward. When this occurs, the upper end 29c is retracted downward and released from the engaging portion 23a of the cup 23.

The lever 29b is disposed so as to extend in the left-right direction (Y direction) below the base 21, is supported so as to be swingable around the horizontal axis 29d at an intermediate position in the left-right direction, and from the horizontal axis 29d. On the suspension side (hereinafter referred to as the front side with respect to the lever 29b), it is biased downward by a biasing spring 29e.
The rear end 29f of the lever 29b extends to the lower side of the lower end of the lock member 29a, and pushes the lock member 29a upward by swinging the lever 29b.

The front end 29g of the lever 29b is exposed from the window 24c of the cover 24 attached to the front side of the base 21, and has an engaging protrusion 29h protruding downward from the lower surface near the front end. The engagement protrusion 29h has a taper on the rear side.
On the other hand, the cup 23 is provided with an engagement hole 23b at a lower portion of the front end. When the base 21 is inserted into the cup 23, the engagement protrusion 29h of the lever 29b is in the engagement hole 23b of the cup 23. And engage.

The lever 29b further includes a guide portion 29i that protrudes upward from the front side of the horizontal shaft 29d. The guide portion 29i is formed as a cylindrical surface whose inner surface on the horizontal shaft 29d side is centered on the axis of the horizontal shaft 29d.
Correspondingly, the base 21 similarly has a guide surface 21g formed as an outer cylindrical surface having the horizontal axis 29d as an axis.
As a result, the lever 29b slides along the guide surface 21g of the base 21 on the inner surface of the guide portion 29i, so that the load of the door 13 when the door is mounted is changed from the lever 29b to the guide surface 29i to the guide surface 21g. So that an excessive load is not applied to the lever 29b.

As shown in FIGS. 7 and 8, the lower hinge portion 30 includes a base 31 attached in a recessed portion 13 b formed at a lower end surface on the suspending side of the door 13 and a door frame corresponding to the base 31. 11 and a fixed shaft portion 32 fixed to a lower end position on one side.
The base 31 and the fixed shaft portion 32 are substantially the same as the upper hinge portion 20 shown in FIG. 3 and FIG.
That is, in the lower hinge portion 30, the base 31, the fixed shaft portion 32, the cup 33, the cover 34, the adjustment member 35, the shaft holder 36, the front / rear adjustment screw 37, the regulating member 38, and the lock mechanism 39 have the following points. Except for the above, the base 21, the fixed shaft portion 22, the cup 23, the cover 24, the adjustment member 25, the shaft holder 26, the front / rear adjustment screw 27, the regulating member 28, and the lock mechanism 29 in the upper hinge portion 20 are the same.

Here, in the lower hinge portion 30, the vertical shaft 32b of the fixed shaft portion 32 has a spherical portion 32c at the upper end thereof. On the other hand, the shaft holder 36 is provided with a bearing hole 36b as a recess that can receive the spherical portion 32c so as to be rotatable in three axial directions.
Thus, the vertical shaft 32b is supported so as to be swingable in an arbitrary direction like a universal joint by engaging with the bearing portion 36b of the shaft holder 36 in the base 31.

In addition, the vertical shaft 32b of the fixed shaft portion 32 is formed as a nut portion 32d having a hexagonal shape, for example, in the vicinity of the lower end, and on the inner side surface of the male screw portion 32e provided in the base portion 32a and extending in the vertical direction. An internal thread portion 32f to be screwed is provided.
Accordingly, the vertical shaft 32b can be adjusted in the vertical direction by rotating the nut portion 32d.

Further, the fixed shaft portion 32 includes a thin spanner 32g for engaging with the nut portion 32d to adjust the rotation of the vertical shaft 32b, and a holding structure 32h for holding the spanner 32g in a state of being engaged with the nut portion 32d. Have. In the case of illustration, the holding structure 32h is configured to screw the spanner 32g to the fixed shaft portion 32 with a fixing screw (not shown).
Accordingly, the vertical shaft 32b of the fixed shaft portion 32 in the lower hinge portion 30 can be rotated and adjusted using the spanner 32g. Further, by holding the spanner 32g by the holding structure 32h, it is possible to prevent the vertical shaft 32b from moving downward due to the load of the door 13 and the opening / closing operation.

  The pivot hinge 12 according to the present invention is configured as described above. When the door 13 is attached to the door frame 11 using the pivot hinge 12, the following operations are performed.

First, the upper hinge portion 20 is attached to the upper end of one side of the door frame 11 in an assembled state, that is, in a state where the components shown in FIG.
At that time, as shown in FIG. 9, the base portion 22a of the fixed shaft portion 22 has two end edges respectively corresponding to the door stopper 11a and the frame side edge 11b of the door frame 11 at the upper end on one side of the door frame 11. It is attached to the upper edge of the door frame 11 in a state of contact.

On the other hand, for the lower hinge portion 30, the base 31 and the fixed shaft portion 32 are separated, that is, the vertical shaft 32 b of the fixed shaft portion 32 is removed from the bearing portion 36 a of the shaft holder 36.
And the base part 32a of the fixed axis | shaft part 32 is the same as the fixed axis | shaft part 22 in the upper hinge part 20, and the two edge is 11a of doors of the door frame 11 in the lower end of the one side of the door frame 11, respectively. And attached to the lower edge of the door frame 11 in contact with the frame side edge 11b.
The base 31 is inserted in the horizontal direction in the corresponding cup 33 on the door 13 side. At the time of insertion, the engagement protrusion 39h protruding upward from the lever 39b of the lock mechanism 39 and the lower end 39c of the lock member 39a are smoothly inserted into the cup 33 by the taper on the rear side.

When the base 31 is completely inserted into the cup 33, the engaging protrusion 39h of the lever 39b is inserted into the engaging hole 33b of the cup 33, and the tension of the biasing spring 39e causes the FIG. While being held at the engagement position shown, the lock member 39a is lowered, and its lower end 39c is engaged with the engagement portion 33a of the corresponding cup 33.
Thereby, the base 31 is fixedly held with respect to the cup 33 at two locations on the diagonal line of the lower rear end and the upper front end. Therefore, when the door 13 is attached, the door 13 can be reliably supported by sufficiently supporting the moment applied to the base 31 by the weight of the door 13.

From this state, as shown in FIG. 10, the door 13 is lifted and the bearing hole 36 b of the shaft holder 36 in the base 31 attached to the lower end on one side of the door 13 is attached to the lower part on one side of the door frame 11. After being aligned with the spherical body portion 32c of the vertical shaft 32b of the fixed shaft portion 32, the door 13 is lowered. At this time, if the door 13 is slightly inclined, the upper portion of the door 13 does not interfere with the door frame 11 and can be easily lifted.
As a result, the door 13 is connected to the door frame 11 by the hinge part 30 below.

Next, as shown in FIG. 11, while returning the inclination of the door 13, the cup 23 attached to the upper end of the door 13 is aligned with the base 21 attached to the upper part of the door frame 11. The base 21 is relatively inserted into the cup 23.
At this time, in the lower hinge portion 30, the spherical portion 32c of the vertical shaft 32b of the fixed shaft portion 32 is supported so as to be swingable with respect to the bearing hole 36b of the shaft holder 36, so that the door 13 is inclined smoothly. Can be returned and the base 21 can be inserted into the cup 23.

When the base 21 is pushed into the cup 23, the rear side of the engagement protrusion 29h and the upper end 29c of the lock member 39a is the same as when the base 31 is inserted into the cup 33 in the lower hinge portion 30. By the taper, the lever 29b of the lock mechanism 29 is retracted upward, and the lock member 29b is retracted downward. Thereby, the base 21 is smoothly inserted into the cup 23.
When the base 21 is completely inserted into the cup 23, the engaging protrusion 29h of the lever 29b is fitted into the engaging hole 23b of the cup 23 and is held in the engaging position by the tension of the biasing spring 29e. The lock member 29a is raised, and the upper end 29c of the lock member 29a is engaged with the corresponding engaging portion 23a of the cup 23.

Thereby, the base 21 is fixedly held with respect to the cup 23 at two locations on the diagonal line of the upper rear end and the lower front end. Therefore, when the door 13 is attached, the door 13 can be reliably supported by sufficiently resisting the moment applied to the base 21 by the weight of the door 13.
In this case, the lower end of the door 13 may be lifted up to the height of the vertical shaft 32 b of the fixed shaft portion 32 in the lower hinge portion 30, and the base 21 is pushed into the cup 23 at the upper hinge portion 20. The door mounting operation can be easily performed by only a simple operation.

Thus, the door 13 attached to the door frame 11 is adjusted in the triaxial direction as follows.
That is, with respect to the position adjustment in the vertical direction (Z direction), the vertical shaft 32 of the fixed shaft portion 32 in the lower hinge portion 30 is rotated by rotating the nut portion 32d using the spanner 32g. To adjust the position of the door 11 to an appropriate height position.
After the adjustment, the spanner 32g is engaged with the nut portion 32d and is screwed to the fixed shaft portion 32 by the holding structure 32h. As a result, the spanner 32g as a tool necessary for the vertical adjustment can be arranged integrally with the spot hinge 10, and the spanner 32g screwed to the fixed shaft portion 32 in this way is provided with a nut portion. Since the inadvertent rotation of 32d is prevented, for example, it is possible to effectively prevent the vertical shaft 32b from inadvertently rotating due to the load of the door 13 and shifting the height adjustment.

  On the other hand, regarding the position adjustment in the front-rear direction (X direction), the corresponding shaft holder 26 is rotated by rotating the front-rear adjustment screws 27 and 37 in the upper hinge part 20 and the lower hinge part 30, respectively. , 36 rotate around the king pins 26a, 36p, respectively, and the bearing portions 26b, 36b of the shaft holders 26, 36 move substantially in the X direction.

  Further, regarding the position adjustment in the left-right direction (Y direction), the corresponding shaft holders 26, 36 are rotated by rotating the left-right adjustment screws 25a, 35a in the upper hinge portion 20 and the lower hinge portion 30, respectively. Each is adjusted to move back and forth.

  Here, since the position adjustment in the X direction is actually performed by the swinging of the shaft holders 26 and 36, strictly speaking, it also varies in the Y direction. Therefore, in order to perform accurate position adjustment in the X direction and the Y direction, it is desirable to perform position adjustment in the Y direction after performing position adjustment in the X direction.

In the state where the door 13 is attached to the door frame 11 in this way, for some reason, the tip of the lever 29b located in the window portion 24a of the cover 24 of the upper hinge portion 20 on the suspension side end surface of the door 13 is provided. When 29g is moved upward, the lever 29b rotates around the rotation shaft 29d, and the rear end thereof moves downward.
At this time, since a force acts in the lateral direction on the upper end 29c of the lock member 29a due to the load of the door 13, the lock member 29a is held in the engaged position by the frictional force. Therefore, the lock member 29a does not fall downward due to its own weight and is not detached from the engaging portion 23a of the cup 23.

When the door 13 is removed from the door frame 11, the operation is performed in the reverse procedure to the case of attaching the door 13 described above.
That is, first, the door 13 is supported from below so that a force due to the load of the door 13 is not applied to the upper hinge portion 20.
When the tip 29g of the lever 29b is moved upward from this state, the lever 29b is rotated around the rotation shaft 29d and the rear end thereof is moved downward. At this time, since the lateral force due to the load of the door 13 is not applied to the upper end 29c of the lock member 29a, the lock member 29a falls due to its own weight, and the lock mechanism 29 is released. From this state, the base 21 in the upper hinge portion 20 is taken out from the cup 23.
Thereafter, the door 13 is inclined, the bearing portion 36b of the shaft holder 36 is removed from the vertical shaft 32b of the fixed shaft portion 32 in the lower hinge portion 30, and the door 13 is removed from the door frame 11.

Thus, according to the pivot hinge 12 of the present invention, the door 1 to the door frame 11
3, with the door 13 tilted, the lower hinge portion 30 can be lifted by lifting the door 13 slightly higher than the height of the vertical shaft 32 b in the fixed shaft portion 32 of the lower hinge portion 30. Can be mounted on the upper hinge part 20 by a so-called one-touch simple operation of inserting the base 21 in the upper hinge part 20 into the cup 23 while returning the inclination of the door. Can be performed.
Furthermore, since the position of the door 13 after installation can be adjusted in three axial directions, the door 13 can be moved relative to the door frame 11 even if the dimensional accuracy of the door frame 11, the door 13, and the pivot hinge 12 is not so high. It can be installed properly.
Further, the end surface on the suspending side of the door 13 is formed in a semicircular cross section, and correspondingly, the suspending side of the upper and lower hinge portions 20 and 30 is formed so as to be aligned. When the door is opened and closed, the user or the like does not accidentally pinch his / her finger between the end surface of the door 13 on the suspending side and the door frame 13, and the door 13 can be attached alone. it can.

The present invention can be implemented in various forms without departing from the spirit of the present invention.
For example, in the above-described embodiment, in the lower hinge portion 30, the upper end of the vertical shaft 32 b has the spherical portion 32 d, but not limited to this, it is in an arc shape with respect to the axis perpendicular to the door 11. Other shapes may be used as long as they are formed.

  In the above-described embodiment, in the lower hinge portion 30, the spanner 32g is screwed to the base portion 32a of the fixed shaft portion 32 by the spanner holding structure 32h. You may make it store in. In this case, even if there are a plurality of hinge parts 30, only one spanner 32g may be prepared.

  In the above-described embodiment, in the rack and pinion mechanism, the pinions 27b and 37b have the eight teeth 27c and 37c. However, the present invention is not limited to this, and the pinions 27b and 37b are seven or less or nine or more. The teeth 27c and 37c may be provided. In this case, the accuracy of the position adjustment of the shaft holders 26 and 36 in the front-rear direction varies depending on the fractions of the pinions 27b and 37b, and the accuracy increases as the number of sheets increases.

  As described above, according to the present invention, with a simple configuration, the door can be easily attached to the door frame, and the hanging finger can be prevented from being pinched. A very good pivot hinge that can be moved and adjusted in the axial direction is provided.

DESCRIPTION OF SYMBOLS 10 Door structure 11 Door frame 12 Pivot hinge 13 Door 20 Upper hinge 21, 31 Base 22, 32 Fixed shaft part 22b, 32b Vertical shaft 23, 33 Cup 24, 34 Cover 25, 35 Adjustment member 25a, 35a Left-right adjustment Screw 26, 36 Shaft holder 26a, 36a King pin 26b, 36b Bearing part 26c, 36c Rack 27, 37 Front / rear adjustment screw 27b, 37b Pinion 28, 38 Restriction member 29, 39 Lock mechanism 29a, 39a Lock member 29b, 39b Lever 29h, 39h Engagement protrusion

Claims (11)

A pivot hinge that swingably supports the door with respect to the door frame,
Having a lower hinge attached to the lower end of one side of the door frame;
A base attached to a recessed portion formed in a lower end surface of the door on the suspension base side, and a fixed shaft portion fixed to a lower end position on one side of the door frame corresponding to the base; Have
The vertical axis of the fixed shaft portion has a sphere at the upper end,
The shaft holder that receives the vertical shaft in the base has a recess corresponding to the sphere,
The pivot hinge, wherein the vertical shaft is supported by the shaft holder so as to be rotatable within the thickness of the door and to be swingable in three axial directions. The vertical axis of the fixed shaft portion has a base portion and a support portion including the sphere portion,
The support portion can be adjusted up and down with respect to the base portion by screwing with a screw portion extending in the vertical direction provided on the base portion.
The pivot hinge according to claim 1.   The pivot hinge according to claim 2, wherein the base portion has a spanner holding structure that holds a spanner for rotating the support portion. Having an upper hinge attached to the upper end of one side of the door frame;
A base attached to a recessed portion formed in an upper end surface of the door on the suspending side of the door; and a fixed shaft portion fixed to an upper end position on one side of the door frame corresponding to the base. Have
The vertical shaft of the fixed shaft portion in the upper hinge portion is held by the base shaft holder in the upper hinge portion so as to be rotatable and vertically movable within the thickness of the door.
The pivot hinge according to claim 1. The bases in the lower hinge part and the upper hinge part support the shaft holders holding the vertical axes of the corresponding fixed shaft parts so as to be movable and adjustable in two horizontal axes.
The pivot hinge according to claim 1. The base in the lower hinge part and the upper hinge part supports the shaft holder via a first adjustment screw extending in the left-right direction parallel to the surface of the door,
The shaft holder can be moved and adjusted in the left-right direction with respect to the base by turning the first adjusting screw.
The pivot hinge according to claim 5.
A base in the lower hinge part and the upper hinge part has a second adjustment screw extending in the left-right direction parallel to the door surface and a rack and pinion mechanism provided on the second adjustment screw. Via the shaft holder,
By rotating this second adjustment screw, the shaft holder can be adjusted to swing in the front-rear direction perpendicular to the surface of the door with respect to the base.
The pivot hinge according to claim 5. The rack and pinion mechanism is provided on an opposite side of the rack, and includes an elastic member that presses the pinion toward the rack and elastically brakes the rotation of the pinion by elastically contacting the pinion.
The pivot hinge according to claim 7. The base of the upper hinge part is detachably mounted in a cup fixed in the recessed part of the door, and fixed and held in the mounting position by a lock mechanism,
The lock mechanism is composed of a lock member arranged vertically near the rear end of the base, and a lever extending back and forth below the base,
The lock member is supported so as to be movable in the vertical direction within the base, and when it is raised, its upper end engages with the upper rear end of the cup,
The lever is supported with respect to the base so as to be swingable around a horizontal axis in the middle in the front-rear direction, a rear end thereof is disposed below the lower end of the lock member, and a front end thereof is attached downward. An elastic member for energizing,
The lever is provided with an engagement protrusion near the front end that engages with the cup when the front end thereof is moved downward by the elastic member.
The pivot hinge according to claim 1. The lower end of the engagement protrusion and the upper end of the lock member have a taper on the rear side,
The pivot hinge according to claim 9.   The pivot hinge according to claim 4, wherein the upper hinge portion and the lower hinge portion are composed of the same parts except for the vertical shaft and the shaft holder of the fixed shaft portion, respectively.

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