JP2022141052A - hinge - Google Patents

Abstract

To make it possible for a hinge to hang a door temporarily with ease without lifting the door when connecting the upper side of the door to a door frame.SOLUTION: A hinge includes: a door side blade 10 having a door side shaft pipe 12 into which a core rod 30 is inserted in a vertical direction; and a frame side blade 20 having a frame side shaft pipe 23 into which a lower end part 32 of the core rod 30 inserted into the door side shaft pipe 12 is inserted. The door side blade 10 and the frame side blade 20 have engagement parts 16 and 25c for temporarily hanging a door 4 by mutual engagement and coaxially arranging the door side shaft pipe 12 and the frame side shaft pipe 23. The engagement part 16 of the door side blade 10 is made up of a hook part engaged with the engagement part 25c by being horizontally hooked to the engagement part 25c of the frame side blade 20. The lower end part 32 of the core rod 30 is inserted into the frame side shaft pipe 23 in a state where both engagement parts 16 and 25c are engaged with each other.SELECTED DRAWING: Figure 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge used for connecting an upper part of a door and a door frame when hanging the door on the door frame of a building or the like.

Generally, when a door is suspended from a door frame installed in a building or structure, at least two hinges are used to connect the door frame and the door. One of the hinges is located on the top side of the door and the other is located on the bottom side of the door.

Conventionally, a door-side blade having a core rod that serves as a rotation axis of the door with respect to the door frame, a door-side shaft pipe through which the core rod is vertically inserted, and a lower end portion of the core rod that is inserted through the door-side shaft pipe. There are hinges with frame-side wings that have frame-side shaft tubes inserted therein.

In the operation of hanging a door using this type of hinge, the door-side blade is attached to the door and the frame-side blade is attached to the door frame. The operator moves the door to coaxially arrange the door-side shaft tube and the frame-side shaft tube. The lower end of the core rod is inserted into the frame-side shaft tube in the state of coaxial arrangement. As a result, the door-side blade and the frame-side blade are connected via the core rod, and the core rod becomes the rotation shaft of the door.

A hinge having a function of temporarily hanging a door (also referred to as temporary hanging) has been proposed in order to allow one person to easily perform the hinge connection work described above (Patent Document 1).

The hinge disclosed in Patent Document 1 is for connecting the upper side of the door and the door frame. belongs to. The hinge disclosed in Patent Document 1 has a notch extending upward from the frame-side shaft tube so that the lower end of the core rod can be temporarily held in a state of protruding downward from the door-side shaft tube. The lower end of the frame-side blade and the notched portion of the frame-side blade are used as engaging portions for temporary suspension. By horizontally inserting the protruding portion of the core rod into the cutout portion of the frame-side blade, the door can be temporarily suspended by engaging them. After this, the operator can push the core rod downward by hand to further insert it into the frame-side shaft tube.

Japanese Patent No. 4292109

In the hinge disclosed in Patent Document 1, when hanging the door, it is necessary to align the lower end of the core rod with the notch of the frame-side blade. When working alone, the lower end of the core rod is hidden by the notch in the frame-side blade from the perspective of the worker holding the door with both hands. It is necessary to move the upper part and insert it into the notch of the frame-side blade. Also, if the door is opened and closed while the lower end of the core rod is not properly inserted into the notch of the frame-side blade due to misalignment, or the door is not inserted properly, the door tip side of the door may The lower end of the core rod and the notch of the frame-side blade cannot receive the load that is about to fall (the moment load of the door). There is a possibility that the operator may be injured or the door or the like may be damaged.

SUMMARY OF THE INVENTION In view of the background described above, the problem to be solved by the present invention is to provide a hinge that can easily temporarily suspend a door when connecting the upper side of the door and the door frame.

In order to achieve the above object, the present invention provides a door-side blade having a core rod serving as a rotation axis of a door with respect to a door frame, a door-side shaft tube through which the core rod is vertically inserted, and the door-side door blade. In a hinge provided with a frame-side blade having a frame-side shaft tube into which the lower end of the core rod inserted through the shaft tube is inserted, the door-side blade and the frame-side blade are engaged with each other to move the door. An engaging portion for temporarily suspending the door-side shaft tube and the frame-side shaft tube and coaxially arranging the frame-side shaft tube is provided, and the engaging portion for the frame-side blade is provided in a cylindrical shape at the upper end portion of the frame-side shaft tube. The engaging portion of the door-side blade adopts a configuration in which the engaging portion of the frame-side blade is provided in a hook shape that is hooked from the horizontal direction toward the door tip side of the door. .

According to the above configuration, the engaging portion of the door-side blade can be horizontally hooked to the engaging portion of the frame-side blade so that both engaging portions can be engaged. After performing the process of connecting with the other hinge first, the weight of the door is supported by other hinges, and then the engaging part of the door-side blade is moved to the engaging part of the frame-side blade by lightly moving the upper part of the door. can be performed. The engaging portion of the door-side blade is provided in a hook shape to be hooked toward the door tip side of the door, and the engaging portion of the frame-side blade is provided in a cylindrical shape at the upper end portion of the frame-side shaft tube. Therefore, when hooking the hook-shaped engaging portion to the cylindrical engaging portion, position the door so that the tip of the hook-shaped engaging portion is located closer to the door frame than the cylindrical engaging portion. It is only necessary to roughly adjust the posture, and after that, both engaging parts can be easily engaged simply by hooking the hook-shaped engaging part on the cylindrical engaging part using the load that the door tip side is about to fall. can be engaged. In the engaged state, the hook-shaped engaging portion is always caught toward the door tip side of the door with respect to the cylindrical engaging portion. can be hung. Further, since the door-side shaft tube and the frame-side shaft tube are coaxially arranged by engaging both the engaging portions, the lower end of the core rod can be inserted into the frame-side shaft tube in the engaged state. The door-side blade and the frame-side blade can be connected with a core rod. Furthermore, even if the door is opened and closed after both the engaging portions are engaged and before the lower end of the core rod is inserted into the frame-side shaft tube, the hook-shaped engaging portion may be replaced by the cylindrical engaging portion. In contrast, the hook-shaped engaging portion is not disengaged from the cylindrical engaging portion because the state of being urged toward the door tip side and being caught does not change.

Therefore, according to the present invention, by adopting the above configuration, it is possible to provide a hinge that can easily temporarily suspend the door when connecting the upper side of the door and the door frame.

The front view which shows the door apparatus which concerns on embodiment of this invention. FIG. 2 is a perspective view showing a state immediately before connecting the upper side of the door and the vertical frame using the hinge according to the embodiment of the present invention; (a) is a front view showing an assembled state of a hinge according to an embodiment of the present invention, (b) is a cross-sectional view taken along line BB of (a), and (c) is line CC of (a). cross section of (a) is a top view of the door-side blade according to the embodiment of this invention, (b) is a front view of the door-side blade, (c) is a bottom view of the door-side blade, (d) is the door-side blade right side view of (a) is a top view of a tightening portion according to an embodiment of the present invention, and (b) is a front view of the tightening portion. (a) is a top view of the frame-side blade according to the embodiment of this invention, and (b) is a front view of the frame-side blade. (a) is a front view of an extension tube portion according to an embodiment of the present invention, and (b) is a longitudinal sectional view of the extension tube portion. (a) is a vertical cross-sectional view of a case member according to an embodiment of the present invention, and (b) is a front view of the case member. FIG. 2 is a cross-sectional view showing how the engaging portion of the door-side blade and the engaging portion of the frame-side blade of the hinge according to the embodiment of the present invention are engaged;

A hinge according to an embodiment as an example of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view showing a door device according to this embodiment. In FIG. 1, reference numeral 1 denotes a door device attached to an opening of a building.

The door device 1 includes a door frame 2 provided in an opening and a door 4 provided in the door frame 2 via a plurality of hinges 3 so as to be openable and closable.

The door frame 2 is assembled in a rectangular frame shape by an upper frame portion 2a, a lower frame portion 2b, and left and right vertical frame portions 2c and 2d.

The hanger side, which is one side of the door 4, is attached via a hinge 3 to the corresponding hanger side vertical frame portion 2d. In order to stably support the door 4 so that it can be opened and closed, two sets of hinges 3 are arranged at the upper and lower portions of the vertical frame portion 2d on the hanger side with an appropriate gap therebetween. An upper hinge 3A is arranged on the upper side, and a lower hinge 3B is arranged on the lower side.

The upper hinge 3A has a door-side blade 10 fixed to the door 4 and a frame-side blade 20 fixed to the door frame 2. The door-side blade 10 is placed on the frame-side blade 20, and each of these blades is mounted. 10 and 20 are connected by a core rod 30 . Similarly, the lower hinge 3B has a door-side blade 50 fixed to the door 4 and a frame-side blade 60 fixed to the door frame 2, and the door-side blade 50 is placed on the frame-side blade 60. , these blades 50 and 60 are connected by a core rod (not shown). This door device 1 is characterized by the structure of the upper hinge 3A.

The upper hinge 3A shown in FIG. 2 is for connecting the upper side of the door 4 and the vertical frame portion 2d of the door frame 2. As shown in FIG. The upper hinge 3A includes a door-side blade 10 attached to the edge of the door 4 on the hanger side, a frame-side blade 20 attached to the vertical frame portion 2d of the door frame 2, and a rotation shaft of the door 4 with respect to the door frame 2. and a case member 40 for enhancing design.

As shown in FIGS. 2, 3(a), 3(b), and 4(a) to 4(d), the door-side blade 10 includes a mounting plate 11 fixed to the tail end of the door 4, It has a door-side shaft tube 12 through which the core rod 30 is inserted in the vertical direction (corresponding to the axial direction of the core rod 30).

The door-side shaft tube 12 is composed of an upper roll plate portion 13 around which a first end of a metal plate is wound, and a tightening portion 14 that temporarily holds the core rod 30 . The core rod 30 is manually inserted into the door-side shaft tube 12 from above downward.

A plurality of counterbore holes 15 are formed in the mounting plate 11 . These counterbore holes 15 are for screwing the mounting plate 11 to the door 4 . The door-side blade 10 is attached to the door 4 by this screwing.

The upper roll plate portion 13 of the door-side shaft tube 12 supports the core rod 30 inserted into the door-side shaft pipe 12 in the horizontal direction (corresponding to the axial radial direction of the core rod 30), and at the upper end opening edge By locking the head portion 31 of the core rod 30, the descent of the core rod 30 is restricted. The tightening portion 14 has a tightening margin with respect to the core rod 30 and tightens the core rod 30 inserted through the tightening portion 14 . When the manual insertion operation of the core rod 30 is stopped after the core rod 30 is inserted into the tightening portion 14 , the tightening portion 14 elastically tightens the core rod 30 to temporarily hold the core rod 30 at the insertion stop position. By manually pushing the head 31 of the temporarily held core rod 30 downward, the core rod 30 can be forcibly lowered.

The door-side blade 10 further has an engaging portion 16 for temporarily suspending the door 4 . The engaging portion 16 is formed of a hook plate portion formed by bending a second end projecting downward from a first end of a metal plate into a curved plate shape. The bending direction of the engaging portion 16 is the same as the winding direction of the upper roll plate portion 13 , and the radius of curvature of the engaging portion 16 is set larger than that of the upper roll plate portion 13 . As shown in FIG. 4(c), the plate surface of the engaging portion 16 on the _side of the center of curvature G2 faces the door tip side of the door 4 with the mounting plate 11 fixed to the door 4 by the fastening surface 11f.

In this embodiment, the winding direction of the upper roll plate portion 13 is the same as the bending direction of the engaging portion 16, but the bending direction of the engaging portion 16 may be opposite.

Regarding the plate surface _on the _side of the center of curvature G2 of the engaging portion 16, the central angle θ from _one circumferential edge to the other circumferential edge around the center of curvature G2 of the engaging portion 16 with respect to the center of curvature G2 is It is set at 120°. This central angle is preferably set to 120° or more in order to temporarily hang the door 4, and is preferably set to 180° or less to facilitate horizontal engagement with the frame-side blade 20 side. .

Even if it is difficult to set θ to 120° or more, the angle α between the fastening surface 11f and the line segment connecting the center of curvature G2 of the engaging portion 16 and the tip portion T of the engaging portion 16 should be ₀ . °, it is possible to more reliably prevent the engagement portion 16 from slipping in the front-rear direction of the door 4 with respect to the engagement portion 25c of the frame-side blade 20 during temporary suspension.

A slit 17 is formed between the upper edge of the engaging portion 16 of the door-side blade 10 and the lower edge of the upper roll plate portion 13 of the door-side shaft tube 12 .

Also, the upper roll plate portion 13 is divided into two upper and lower portions, and a slit 18 is formed between the upper portion and the lower portion.

These slits 17, 18 are formed during the stamping process for molding the first and second ends of the metal plate. The upper roll plate portion 13 is formed by rolling a first end portion of a metal plate. The engaging portion 16 of the door-side blade 10 is formed by pressing the second end portion of the metal plate. Since the slits 17 are formed, it becomes easy to mold the engaging portion 16 of the door-side blade 10 and the upper roll plate portion 13 into curved surfaces different from each other.

The center of curvature G1 of the inner peripheral surface of the upper roll plate portion ₁₃ and the center of curvature G2 of the engaging portion 16 _are arranged coaxially. The core rod 30 is fitted inside the upper roll plate portion 13 from the upper end side opening of the upper roll plate portion 13 . A convex portion 30d formed by coining or the like is formed on the outer side of the cylindrical surface of the core rod 30 (see FIG. 3B). The protruding portion 30d of the core rod 30 is inserted into the slit of the upper roll plate portion 13 (the gap formed between the winding end of the upper roll plate portion 13 and the plate surface of the metal plate). Thereby, the core rod 30 is prevented from rotating with respect to the upper roll plate portion 13 .

As shown in FIG. 5, the tightening portion 14 is composed of a ring-shaped retaining ring with ends that is divided at one point in the circumferential direction, and is integrally molded of synthetic resin. The tightening portion 14 is horizontally inserted into the slit 18 as shown in FIGS. 2 and 3(a). The vertical movement of the tightening portion 14 is restricted by the upper and lower opposing edges of the upper roll plate portion 13 . When the core rod 30 is inserted into the tightening portion 14 , the tightening portion 14 is elastically deformed to expand its diameter, thereby tightening the core rod 30 .

As shown in FIGS. 2, 3(a), 3(c), and 6(a) to 7, the frame-side blade 20 has a mounting case 21 fixed to the vertical frame portion 2d and a mounting case 21 attached to the mounting case 21. and a frame-side shaft tube 23 into which the lower end portion 32 of the core rod 30 inserted through the door-side shaft tube 12 is inserted.

The frame-side shaft tube 23 is composed of a lower roll plate portion 24 around which an end of a metal plate is wound, and an extension pipe portion 25 inserted and fixed to the lower roll plate portion 24 . The frame-side shaft tube 23 horizontally supports the lower end portion 32 of the core rod 30 inserted into the frame-side shaft tube 23 .

The position adjustment plate 22 and the lower roll plate portion 24 are made of the same metal plate. The extension tube portion 25 is integrally molded from synthetic resin.

The mounting case 21 is connected to the position adjusting plate 22 by a plurality of male screw members 26 to 28, and fixed to the vertical frame portion 2d. The frame-side blade 20 is attached to the door 4 by these screws.

The male screw member 27 is for adjusting the position of the position adjusting plate 22 in the front-rear direction with respect to the vertical frame portion 2d. The male screw member 28 is for adjusting the position of the position adjusting plate 22 in the horizontal direction with respect to the vertical frame portion 2d. It is also possible to omit the position adjustment function and replace the metal plate having the frame-side shaft tube 23 with a frame-side blade fixed to the vertical frame portion 2d. Moreover, it is good also as a structure which provides a position adjustment mechanism in the door side blade|wing side.

The extension tube portion 25 is vertically spaced apart from the lower cylinder 25a positioned inside the lower roll plate portion 24, the lower collar 25b placed on the upper edge of the lower roll plate portion 24, and the lower collar 25b. It consists of an upper collar 25e and an engaging portion 25c of the frame-side blade 20 extending upward from the upper collar 25e.

The lower cylinder 25 a is fitted inside the lower roll plate portion 24 from the upper end side opening of the lower roll plate portion 24 . The extension tube portion 25 is inserted and fixed to the lower roll plate portion 24 by fitting the lower cylinder 25 a and the lower roll plate portion 24 and by locking the lower collar 25 b to the upper end edge of the lower roll plate portion 24 . A vertically extending ridge 25d is formed on the outer side of the lower cylinder 25a (see FIG. 3(c)). The ridge 25d of the lower cylinder 25a is inserted into the slit of the lower roll plate portion 24 (the gap formed between the winding end of the lower roll plate portion 24 and the plate surface of the metal plate). Thereby, the extension pipe portion 25 is prevented from rotating with respect to the lower roll plate portion 24 .

A lower end opening of the lower roll plate portion 24 is closed by a cap 29 press-fitted into the lower roll plate portion 24 .

A case member 40 is detachably fitted to the upper brim 25e. As shown in FIG. 8, the case member 40 is formed in a bottomed tubular shape with a closed upper end and an open lower end. A slit 41 is formed at one place in the circumferential direction of the case member 40 . The slit 41 extends vertically. The case member 40 shown in FIG. 3 is fitted to the upper flange 25e so as to cover the door-side shaft tube 12 and the engaging portion 16 of the door-side blade 10. As shown in FIG. At this time, the vicinity of the root of the upper roll plate portion 13 and the vicinity of the root of the engaging portion 16 of the mounting plate 11 are passed through the slit 41 . The lower flange 25b abuts the lower edge of the case member 40 vertically, and the upper flange 25e fits inside the case member 40. As shown in FIG. Here, a plurality of claw portions 42 provided at the lower end of the case member 40 are snap-fitted between the upper flange 25e and the lower flange 25b, and the case member 40 is retained.

As shown in FIG. 7, the engaging portion 25c of the frame-side blade 20 has a cylindrical shape extending vertically. The engaging portion 25c and the lower cylinder 25a are set coaxially. When the extension pipe portion 25 is inserted into and fixed to the lower roll plate portion 24 , the engaging portion 25 c constitutes the upper end portion of the frame-side shaft pipe 23 .

As shown in FIGS. 2 and 9, the engaging portion 16 of the door-side blade 10 is hooked to the engaging portion 25c of the frame-side blade 20 from the horizontal direction toward the door edge of the door 4, thereby It is engaged with the engaging portion 25c of the frame-side blade 20. As shown in FIG. The outer periphery of the engaging portion 25c of the frame-side blade 20 is arranged so that the plate surface of the engaging portion 16 of the door-side blade 10 on the center of curvature side is brought into contact with the outer periphery of the engaging portion 25c over a predetermined central angle range. Furthermore, the diameter is smaller than the radius of curvature of the plate surface. Further, the length of the engaging portion 25c in the vertical direction is set so that the engaging portion 16 does not move upward from the engaging portion 25c even if a load is applied that causes the door tip side of the door 4 to drop. It is larger than half of the vertical length of the 10 engaging portions 16 .

The lower end portion 32 of the core rod 30 shown in FIGS. 2 and 3A is inserted into the frame-side shaft tube 23 from the upper end-side tube opening of the engaging portion 25c of the frame-side blade 20 . The lower end portion 32 of the core rod 30 is inserted until it protrudes downward from the lower cylinder 25a. The lower end portion 32 of the core rod 30 and the inner peripheral side of the upper end tube opening of the engaging portion 25c are chamfered. This is because mutual misalignment when inserting the lower end portion 32 of the core rod 30 into the engaging portion 25c is guided coaxially by sliding contact between the chamfered portions.

As shown in FIG. 9, the temporary suspension step of hooking the engaging portion 16 of the door-side blade 10 to the engaging portion 25c of the frame-side blade 20 is carried out in advance by attaching the door-side blade 10 and the frame-side blade 20 to the corresponding doors 4 and 4 respectively. It is started after completing the suspension preparation process in which the door 4 is attached to the vertical frame portion 2d and the lower side of the door 4 is connected to the vertical frame portion 2d by the lower hinge 3B (see FIG. 1).

For the lower hinge 3B, the hinge 3A consisting of the door-side blade 10, the frame-side blade 20, and the core rod 30 may be used, or a hinge having a structure not applicable to the present invention may be used. A hinge with a position adjustment function may be used.

After the suspension preparation process, substantially all of the weight of the door 4 is supported by the other hinge 3B. Therefore, the worker can lightly move the upper side of the door 4 shown in FIG. 2 to carry out the temporary suspension process. When a worker moves the upper side of the door 4 to hook the engaging portion 16 of the door-side blade 10 to the engaging portion 25c of the frame-side blade 20 from the horizontal direction, the engaging portion 16 on the door 4 side is positioned on the front side. Therefore, the visibility of the engaging portion 16 is good, and it is easy to align the engaging portion 16 with the engaging portion 25c on the side of the vertical frame portion 2d. Furthermore, since a slit 17 is formed between the engaging portion 16 of the door-side blade 10 and the door-side shaft tube 12, the worker can visually recognize the state of the above-described alignment through the slit 17.

As shown by the two-dot chain line in FIG. 9, the position of the door 4 is roughly adjusted so that the hook-shaped engaging portion 16 is located closer to the vertical frame portion 2d than the cylindrical engaging portion 25c. After that, the operator only needs to hook the engaging portion 16 to the engaging portion 25c using the load (applied in the Y2 direction in the figure) that the door tip side of the door 4 is about to fall. Both engaging portions 16 and 25c can be easily engaged.

In this engaged state, as shown by the solid line in FIG. 9, the hook-shaped engaging portion 16 is always engaged with the cylindrical engaging portion 25c toward the door tip side of the door 4. The door 4 can be temporarily hung by supporting the load (applied in the Y1 direction in the figure) that the front side is about to fall. That is, since the hook-shaped engaging portion 16 of the door-side blade 10 is integrated with the mounting plate 11 fixed to the hanger side of the door 4, the door-end side of the door 4 ( (Y1 direction in the same figure) and is caught by the engaging portion 25c of the frame-side blade 20 to prevent the door 4 from tilting toward the door tip side, and the cylindrical engaging portion 25c has a central angle of 120° or more. Since the door 4 is caught over the entire length, it is possible to prevent the tilting behavior of the door 4 in the front-rear direction. For this reason, both the engaging portions 16 and 25c serve as temporary rotation shafts of the door 4, and the door-side shaft tube 12 and the frame-side shaft tube 23 are arranged coaxially. In this manner, the engagement portion 25c of the frame-side blade 20 and the engagement portion 16 of the door-side blade 10 temporarily suspend the door 4 and also connect the door-side shaft tube 12 and the frame-side shaft tube 23 by mutual engagement. Can be arranged coaxially. This coaxiality is not required to be strictly coaxial as long as the accuracy is such that the lower end portion 32 of the core rod 30 can be inserted into the frame-side shaft tube 23 .

After the temporary suspension process described above, a connection process of manually inserting the core rod 30 shown in FIG. 2 is performed. Here, before the temporary suspension process, the core rod 30 is temporarily held in advance by the tightening portion 14 so as not to protrude downward from the door-side shaft tube 12, and if the temporary suspension process is performed in that state, the temporary suspension process can be performed. After that, the lower end portion 32 of the core rod 30 can be skillfully inserted into the frame-side shaft tube 23 to complete the connecting process.

After the temporary hanging process described above, the door 4 is temporarily hung by the upper and lower hinges, and the moment load that the door tip side of the door 4 is about to drop is supported by the engaging portion 16. Even if the door 4 is released from the door frame 2 or opened and closed with respect to the door frame 2, the door 4 normally does not fall or tilt. For this reason, before the temporary suspension process, the core rod 30 is not inserted into the door-side shaft tube 12, and after the temporary suspension process, the core rod 30 is inserted into the door-side shaft tube 12 and is inserted up to the frame-side shaft tube 23. It is also possible to change the order of steps to implement

After the connecting step, as shown in FIG. 3(a), the case member 40 is fitted to the upper and lower flanges 25b, 25e (hereinafter, refer to FIGS. 2, 3(a) to 3(c), and 9 as appropriate). .

As described above, this hinge includes a door-side blade 10 having a core rod 30 that serves as a rotation axis of the door 4 with respect to the door frame 2, a door-side shaft tube 12 through which the core rod 30 is vertically inserted, and a door-side hinge. A frame-side blade 20 having a frame-side shaft tube 23 into which a lower end portion 32 of a core rod 30 inserted through the side shaft tube 12 is inserted. It has engaging portions 16 and 25c for temporarily suspending the door 4 by engagement and coaxially arranging the door-side shaft tube 12 and the frame-side shaft tube 23, and the engaging portion 25c of the frame-side blade 20 is connected to the frame-side shaft tube. 23, and the engaging portion 16 of the door-side blade 10 is hooked to the engaging portion 25c of the frame-side blade 20 from the horizontal direction toward the door tip side of the door 4. By providing, the process of connecting the lower side of the door 4 and the vertical frame part 2d with another hinge is performed first, and after the weight of the door 4 is supported by the other hinge, the upper side of the door 4 is connected. A temporary suspension process can be performed in which the engaging portion 16 of the door-side blade 10 is engaged with the engaging portion 25c of the frame-side blade 20 by lightly moving the hook-shaped engaging portion 16. It is only necessary to roughly adjust the position for hooking to the cylindrical engaging portion 25c, and thereafter, the hook-shaped engaging portion 16 is moved into the cylindrical shape using the load that the door tip side of the door 4 is about to drop. Both the engaging portions 16 and 25c can be easily engaged simply by hooking the engaging portion 25c. In this engaged state, the hook-shaped engaging portion 16 is always hooked toward the door tip side of the door 4 with respect to the cylindrical engaging portion 25c, so that the door tip side of the door 4 supports the load that is about to fall. the door 4 can be temporarily suspended. Further, since the door-side shaft tube 12 and the frame-side shaft tube 23 are coaxially arranged by engaging both the engaging portions 16 and 25c, the lower end portion 32 of the core rod 30 is attached to the frame in the engaged state. The door-side blade 10 and the frame-side blade 20 can be connected with the core rod 30 by inserting it into the side shaft tube 23 . Even if the door 4 is opened and closed before the lower end portion 32 of the core rod 30 is inserted into the frame-side shaft tube 23 after both the engaging portions 16 and 25c are engaged, the above-described load will cause the hook-like movement. The hook-shaped engaging portion 16 is disengaged from the cylindrical engaging portion 25c because the engaging portion 16 is biased toward the door tip side of the cylindrical engaging portion 25c and remains hooked. never. Therefore, this hinge can easily temporarily hang the door 4 when connecting the upper side of the door 4 and the vertical frame portion 2d.

In addition, this hinge has a slit 17 between the engaging portion 16 of the door-side blade 10 and the door-side shaft tube 12, so that the engaging portion 16 is hooked to the engaging portion 25c of the frame-side blade 20. The visibility of the actual alignment can be further improved.

In addition, this hinge has an upper roll plate portion 13 in which the door-side shaft tube 12 winds the first end of the metal plate, and the engaging portion 16 of the door-side blade 10 wraps the second end of the metal plate. The upper roll plate portion 13 and the engaging portion 16 are formed from a single metal plate by forming a slit 17 between the upper roll plate portion 13 and the engaging portion 16. When forming, it is possible to divide each part by slits 17 so that each part can be formed into an appropriate shape, and the above-mentioned visibility can be improved by the slits 17 .

In this embodiment, the slit 17 is provided as an example, but the present invention is not limited to this. The tube 12 may be molded into a continuous shape.

In addition, this hinge has a tightening portion 14 for temporarily holding the core rod 30 inserted into the door-side shaft tube 12 , so that the core rod 30 is held in the door-side shaft tube 12 in advance. In this state, the engaging portion 16 of the door-side blade 10 can be hooked to the engaging portion 25c of the frame-side blade 20, and then the core rod 30 can be skillfully inserted into the frame-side shaft tube 23. can be done.

In this embodiment, the tightening portion 14 is used to temporarily hold the core rod 30, but the temporary holding means is not limited to this. may be eliminated, and with the core rod 30 inserted into the door-side shaft tube 12, the end portion of the upper roll plate portion 13 may be appropriately crushed for retaining and temporary holding.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. Therefore, the scope of the present invention is indicated by the claims, and is intended to include all changes within the meaning and range of equivalents of the claims.

10 door-side blade 12 door-side shaft tube 13 upper roll plate portion 14 tightening portion 16 engaging portion 17 slit 20 frame-side blade 23 frame-side shaft pipe 24 lower roll plate portion 25 extension pipe portion 25a lower cylinder 25b lower collar 25c engagement Part 30 Core rod 32 Bottom end 40 Case member

Claims (1)

A door-side blade having a core rod serving as a rotation axis of the door with respect to the door frame, a door-side shaft pipe through which the core rod is vertically inserted, and a lower end portion of the core rod inserted through the door-side shaft pipe. A hinge comprising a frame-side blade having a frame-side shaft tube into which is inserted,
The door-side blade and the frame-side blade have engaging portions for temporarily suspending the door by engaging each other and coaxially arranging the door-side shaft tube and the frame-side shaft tube,
The engaging portion of the frame-side blade is provided in a cylindrical shape at the upper end portion of the frame-side shaft tube,
A hinge according to claim 1, wherein the engaging portion of the door-side blade is provided in the shape of a hook that is hooked to the engaging portion of the frame-side blade from the horizontal direction toward the door tip side of the door.

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