JP3446069B2 - Pivot door hinges - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge for a pivot type door having two hinge shafts.

[0002]

2. Description of the Related Art Hinges of this type are known from Japanese Utility Model Publication No. 2-11983 and Japanese Utility Model Publication No. 3-12138.
These form a hinge by using three hinge bodies that are vertically stacked and two hinge shafts as hinge elements. Of the three hinge bodies, the upper and lower hinge bodies are fixed to the opening frame and the door, and the intermediate hinge body is connected to the upper and lower hinge bodies by two hinge shafts. If you open the door from the closed position,
The hinge body on the door side and the intermediate hinge body swing together with one hinge axis to the half-open position, and thereafter only the door side hinge body swings to the fully open position about the other hinge axis. Can move. In order to perform these sequential operations reliably,
A lock mechanism and a stopper mechanism are provided between the intermediate hinge body and the upper and lower hinge bodies.

[0003]

In such a conventional door hinge, the number of constituent parts is large and the number of man-hours for processing each hinge is large, so that the manufacturing cost of the hinge is high. Since the lock mechanism and the stopper mechanism are incorporated inside the intermediate hinge body, there is a limit to downsizing the entire body. As described above, hinges that are costly and difficult to miniaturize are limited to doors of office furniture and the like, which are relatively large and expensive to be applied.

An object of the present invention is to obtain a biaxial hinge type pivot type hinge which has a simple structure and can be manufactured at low cost. An object of the present invention is to obtain a door hinge that can be easily miniaturized as a whole and can be widely applied to a large door to a small door. An object of the present invention is to obtain an inexpensive and small door hinge suitable for opening and operating a small door having a small outer dimension in two steps of a half open position and a fully open position.

[0005]

A first door hinge according to the present invention has a fixed hinge body 4, a movable hinge body 5, and an intermediate hinge body 6, and a connecting portion 11 of the fixed hinge body 4. The intermediate hinge body 6 is a half-open shaft 7, and the connecting portion 19 of the movable hinge body 5 is
The intermediate hinge body 6 and the intermediate hinge body 6 are connected by a fully open shaft 8 so as to be rotatable relative to each other. Both connecting portions 11 and 19 are arranged adjacent to one surface of the intermediate hinge body 6 with their relative rotational trajectories partially overlapping, and circumscribe a part of each peripheral surface to the peripheral surface of the adjacent partner. The restriction recesses 14 and 21 are provided. The intermediate hinge body 6 is provided between the fixed hinge body 4 and the intermediate hinge body 6.
Stopper 25 that regulates the open swing limit of the half open position
To provide. Both connecting parts 11.1 facing each other in the half open position
Both of the restricting recesses 14 and 21 are formed so as to face each other on each of the peripheral surfaces of 9.

The second door hinge according to the present invention includes a fixed hinge body 4, a movable hinge body 5, an intermediate hinge body 6, and a pair of rotation restricting bodies 27 and 28. Both rotation restricting bodies 27, 28 are provided on one side of the intermediate hinge body 6 with both 27, 28
The relative rotation trajectories of 28 are arranged adjacent to each other so as to partially overlap with each other. The fixed hinge body 4 and one rotation restricting body 27 are rotatably connected to the intermediate hinge body 6 via a half-open shaft 7, and the movable hinge body 5 and the other rotation restricting body 28 are intermediate. It is connected to the hinge body 6 via a fully open shaft 8 so as to be relatively rotatable. Between the fixed hinge body 4 or the rotation restricting body 27 and the intermediate hinge body 6, the stopper 2 that defines the swing limit of the intermediate hinge body 6 at the half open position.
5 is provided. Both rotation restricting bodies 2 facing each other in the half open position
Both of the restriction recesses 14 and 21 are formed on the peripheral surfaces of 7 and 28 so as to face each other.

The third door hinge according to the present invention has a fixed hinge body 4, a movable hinge body 5, and an intermediate hinge body 6, and the connecting portion 11 and the intermediate hinge body 6 of the fixed hinge body 4 are half opened. On the shaft 7, the connecting portion 19 of the movable hinge body 5 and the intermediate hinge body 6 are connected by a fully open shaft 8 so as to be relatively rotatable. Both connection parts 1 arranged adjacent to one surface of the intermediate hinge body 6.
A restriction recess 14 that interposes a lock piece 30 between the adjacent peripheral surfaces of 1 and 19 so as to be movable left and right, and selectively engages with the lock piece 30 on each of the peripheral surfaces of both connection portions 11 and 19.
・ Provide 21. A stopper 25 is provided between the fixed hinge body 4 and the intermediate hinge body 6 to define the open swing limit of the intermediate hinge body 6 at the half open position. At the half-opened position, on the opposing peripheral surfaces of both connecting portions 11 and 19 that sandwich the lock piece 30,
The two regulation recesses 14 and 21 are formed so as to face each other. Specifically, in the above-mentioned third door hinge, the half-open shaft 7 and the fully-open shaft 8 are provided with the holders 31 that guide the lock pieces 30 to move only left and right. A long hole 35 is provided on the plate surface of the intermediate hinge body 6, and the lock piece 30 is formed by the long hole 35.
To guide you to move left and right.

[0008]

In the first hinge of the present invention, when the door 2 is closed, the restriction recess 21 on the movable hinge body 5 side is circumscribed on the peripheral surface of the connecting portion 11 of the fixed hinge body 4.
The intermediate hinge body 6 can swing open and swing around the half-open shaft 7, but the movable hinge body 5 cannot swing in any direction of opening and closing because the connecting portion 11 interferes. The intermediate hinge body 6 can be opened and rocked to a half-open position where the stopper 25 acts. At this time, since both the regulation recesses 14 and 21 face each other, only the movable hinge body 5 can be opened and swung thereafter, and the intermediate hinge body 6 is swung closed while the connecting portion 19 is in the regulation recess 14. I can't. In this way, both connection parts 1
1.19 and restriction recesses 14 and 21 provided on these peripheral surfaces
When the rotation of the intermediate hinge body 6 and the movable hinge body 5 is restricted, the number of constituent parts of the hinge and the number of processing steps can be reduced.

In the second hinge of the present invention, both connecting portions 11
The rotation restriction is performed in the same manner as the first hinge, except that a pair of rotation restriction bodies 27 and 28 having restriction recesses 14 and 21 are used instead of 19. Although the number of parts is larger than that of the first hinge, the structure can be simplified as compared with the conventional hinge of this type.

In the third hinge of the present invention, the lock piece 30 is provided between the adjacent connecting portions 11 and 19, and when the door 2 is opened and closed across the half-opened position, the lock piece 30 is provided with the restriction recesses 14 and 21. Since it is passed from one to the other, it is possible to prevent the door 2 from wobbling in the half-open position by the amount of the floating gap between the movable hinge body 5 and the intermediate hinge body 6.

[0011]

According to the present invention, the connecting portion 11 of the fixed hinge body 4 and the connecting portion 19 of the movable hinge body 5 are used to regulate the rotation of the intermediate hinge body 5 and the movable hinge body 5. Alternatively, instead of the both connecting portions 11 and 19, one rotation restricting body 27 is provided.
・ By using 28, the intermediate hinge body 6 and the movable hinge body 5
Since the rotation of the hinge is restricted, the number of constituent parts and the number of processing steps can be reduced to simplify the hinge structure, and the manufacturing cost can be reduced accordingly, as compared with the conventional pivot hinge of the biaxial hinge type. Since the number of parts is small and the structure is simple, the entire hinge can be downsized without any hindrance, and even a small door can be easily applied with a biaxial hinge type hinge that can be opened in two steps: half open and full open. According to the door hinge that interposes the lock piece 30 between the adjacent connecting portions 11 and 19 and transfers the lock piece 30 from one of the two restricting recesses 14 and 21 to the other in the half-open position, the lock piece 30 is in the half-open position. The wobbling of the door 2 can be eliminated and its position can be reliably held.

[0012]

【Example】

(Embodiment 1) In FIG. 2, reference numeral 1 is an opening frame of a cabinet, and 2 is a door. The door 2 is supported by a pair of hinges 3 fixed to the upper and lower sides of the opening frame 1, and can be opened between a half-open position that swings 90 degrees from the closed position and a fully open position that swings 180 degrees from the closed position. In addition, since the structures of the hinges 3 and 3 are vertically and horizontally symmetrical, only the hinge 3 at the lower right corner will be described below.

3 and 4, the hinge 3 is a fixed hinge body 4 fixed to the opening frame 1, a movable hinge body 5 fixed to the door 2, and an intermediate hinge connecting both hinge bodies 4 and 5. The body 6 and the fixed hinge body 4 and the intermediate hinge body 6 are connected by the half-open shaft 7, and the intermediate hinge body 6 and the movable hinge body 5 are connected.
And are connected by a fully open shaft 8. Each of these hinge bodies 4, 5, 6
Are made of press-formed stainless steel plates.

As shown in FIG. 5, the fixed hinge body 4 has an inverted L-shape.
It has a mounting wall 10 having a V-shaped cross section, and a connecting portion 11 that is continuously bent horizontally at the lower end of one side of the mounting wall 10, and is provided with screw insertion holes 12 at two locations on the standing wall portion of the mounting wall 10. A connecting hole 13 for the half-open shaft 7 is provided in the connecting portion 11. The movable hinge body 5 has a mounting wall 18 in which two screw insertion holes 17 are provided on the left and right sides of the plate surface, and a connecting portion 19 that is horizontally bent continuously to the lower end on one side thereof. The connecting portion 19 is provided with a connecting hole 20 for the fully open shaft 8.

The intermediate hinge body 6 has a quadrangular horizontal plate surface, and connecting holes 23 for the half-open shaft 7 and the full-open shaft 8 are provided at two positions on the left and right of the plate surface, and one long side portion of the plate surface as a whole. Is bent at a right angle to form the stopper 25, and the middle part 1 of the other long side
A stopper protrusion 26 is provided at a position. The connecting portions 11 and 19 of the fixed and movable hinge bodies 4 and 5 are arranged adjacent to each other on the surface wall of the upper surface of the intermediate hinge body 6 such that the relative rotation trajectories of the both 11 and 19 partially overlap with each other, and they are connected to each other. Hole 13
The half open shaft 7 and the full open shaft 8 inserted through
Insert it through and fix it by caulking. Washers and plastic washers can be inserted as needed.

The intermediate hinge body 6 and the movable hinge body 5 are selectively opened and closed to swing to open and close the door 2 between the closed position and the half open position.
And open and close between the half open and full open positions. In order to open / close and swing the two hinge bodies 6/5 in a prescribed order, the fixed / movable connecting portions 11 of the hinge bodies 4/5 are connected.
19 is used as a rotation restricting body to restrict the rotation of each of the hinge bodies 4, 5 and 6.

More specifically, an arcuate restriction recess 14 circumscribing the peripheral surface of the adjacent mating side on the arcuate peripheral surface of each of the connecting portions 11 and 19.
・ Provide 21 respectively. The restriction concave portion 21 on the movable hinge body 5 side is formed over the arcuate peripheral surface of the connecting portion 19 and the linear side surface continuous with the circular arc peripheral surface, and when the door 2 is in the closed position (state of FIG. 3), The center of the recess is located on a straight line connecting the centers of the half-open shaft 7 and the fully-open shaft 8. The restriction recess 14 on the fixed hinge body 4 side is provided at a position directly facing the restriction recess 21 when the intermediate hinge body 6 opens and swings to the half-open position. The restriction recess 21 on the side of the connecting portion 19
Is longer than the chord length of the restriction recess 14 on the connection portion 11 side.

When the door 2 is closed as shown in FIG.
The mounting walls 10 and 18 of both the fixed and movable hinge bodies 4 and 5 are parallel to each other, and the restriction recess 14 provided in the connection portion 11 of the fixed hinge body 4 faces the stopper 25. The restriction recess 21 on the movable hinge body 5 side is circumscribed on the arcuate circumferential surface of the connecting portion 11 on the fixed hinge body 4 side. In this state, a part of the peripheral edge of the connecting portion 11 has entered the restricting concave portion 21 in the rotation locus of the connecting portion 19, so that the movable hinge body 5 cannot swing about the fully open shaft 8.

When the door 2 is opened from the above state, the intermediate hinge body 6 swings open and swings about the half-open shaft 7, and the center of the fully open shaft 8 swings and displaces to the outside of the outer surface of the opening frame 1. At this time, the movable hinge body 5 swings along with the intermediate hinge body 6, and the restriction recess 21 moves along the arcuate circumferential surface of the connecting portion 11 as shown in FIG. Until it reaches the half open position
The side edge of the connecting portion 19 of the movable hinge body 5 is the stopper projection 2
Since it is in contact with 6, the hinges 5 and 6 can be swung together to the closed position when the door 2 is closed during opening.

In the half open position, the stopper 25 of the intermediate hinge body 6 abuts against the side edge of the connecting portion 11 of the fixed hinge body 4 to prevent the intermediate hinge body 6 from swinging open beyond this position. To do. At this time, the restriction recess 21 of the movable hinge body 5 faces the restriction recess 14 on the fixed hinge body 4 side as shown by an imaginary line in FIG. 1, but a part of the concave surface on the lower side of the rotation is: The movable hinge body 5 is prevented from swinging toward the closing side by contacting the arcuate circumferential surface of the connecting portion 11 by the difference in chord length between the restriction recesses 14 and 21. Thereafter, when the door 2 is further opened, as shown in FIG. 6, only the movable hinge body 5 opens and swings around the fully open shaft 8. Along with this opening and swinging, the arcuate peripheral surface of the connecting portion 19 enters the restriction recess 14 and prevents relative rotation of the fixed hinge body 4 and the intermediate hinge body 6.
Therefore, the intermediate hinge body 6 cannot swing in the closing direction about the half-open shaft 7, and only the movable hinge body 5 can swing in both the opening and closing directions. The open limit position of the movable hinge body 5 is defined by receiving the mounting wall 18 by the side end surface 25a of the stopper piece 25.

When the door 2 is closed, only the movable hinge body 5 is closed and rocked to the half-open position. When the half-open position is exceeded, the closing moment acting on the movable hinge body 5 is transmitted to the intermediate hinge body 6 via the stopper projection 26 that abuts the side edge of the connecting portion 19, so that both hinge bodies 5 and 6 accompany each other. Then, the regulating recess 21 again circumscribes the circular arc peripheral edge of the connecting portion 11 and oscillates.

The hinge bodies 4, 5 and 6 are formed by press molding, and the pair of connecting portions 11 and 19 are used as rotation restricting bodies to regulate the rotation of the movable hinge body 5 and the intermediate hinge body 6. According to the above-described embodiment, the total number of constituent parts per hinge can be reduced to only five, the man-hour required for processing each part can be reduced, and the hinge 3 can be manufactured at low cost. By simply scaling down the whole, you can achieve miniaturization without any problems. It is also advantageous in that the possibility of failure can be reduced because the number of parts is small.

(Second Embodiment) FIGS. 7 and 8 show a door hinge according to a second embodiment of the present invention. In this example,
A pair of movable hinges 4 and 5 are arranged adjacent to each other on the lower surface of the intermediate hinge body 6 and connected to the upper surface of the intermediate hinge body 6 to rotate together with the fixed and movable hinge bodies 4 and 5. The rotation restricting bodies 27 and 28 are arranged adjacent to each other with the relative rotation trajectories of both 27 and 28 partially overlapping. Then, similarly to the above-described embodiment, the regulation recesses 14 and 21 are formed on a part of the arcuate circumferential surfaces of the rotation regulating bodies 27 and 28, respectively. The fixed hinge body 4, the half-open shaft 7, and the rotation restricting body 27 are connected so that they cannot rotate relative to each other. Similarly, the movable hinge body 5, the fully open shaft 8 and the rotation restricting body 28 are also connected so that they cannot rotate relative to each other. As described above, the rotation restricting bodies 27 and 28, which are made into independent parts, can have their thickness freely changed and set, and can be formed as precision casting or metal turning products.
If necessary, plastic molded products can be used. The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

(Third Embodiment) FIGS. 9 to 11 show a door hinge according to a third embodiment of the present invention. The hinge of this example is
The hinge is basically configured in the same manner as the hinge of the first embodiment, but is different in the following points. Connection part 11 of both fixed and movable hinge bodies 4 and 5
・ 19 are arranged adjacent to each other with a gap E, and both connection parts 11 ・
The lock piece 30 is interposed between the adjacent peripheral surfaces of 19. Further, a holder 31 is provided which guides the lock piece 30 so that the lock piece 30 can be moved laterally only. The lock piece 30 is made of a metal disc, and the control recesses 14 and 21 that match the radial dimension of the lock piece 30 are connected to the connecting portions 11 and 1.
It is formed on the circular arc circumferential surface of 9.

As shown in FIG. 11, the holder 31 is made of a press-molded product made of stainless steel plate material in the shape of a spectacle frame, and the insertion holes 32 for the half-open shaft 7 and the insertion holes for the full-open shaft 8 are formed on the left and right plate surfaces. A pair of claw pieces 34 for holding the lock piece 30 are bent downward through the hole 33 and at the center of the plate surface. The distance between the pair of claw pieces 34 facing each other in the front-rear direction is slightly larger than the diameter dimension of the lock piece 30. Also in this embodiment, the same members as in Embodiment 1 are designated by the same reference numerals,
The description is omitted.

When the door 2 is opened to the half-opened position, the lock piece 30 is inserted into the restriction recess 21 on the movable hinge body 5 side. When the door 2 is further opened from this state, the lock piece 30 is pushed out of the restriction recess 21 and enters the restriction recess 14 on the fixed hinge body 4 side as shown by an imaginary line in FIG. The lock piece 30 is the restriction recess 14
When it completely enters the inside, the intermediate hinge body 6 cannot swing in the closing direction, and only the movable hinge body 5 can swing in the opening and closing directions. In this way, in the half-open position, according to the configuration in which the lock piece 30 is transferred from one of the restriction recesses 14 and 21 to the other, the loose clearance between the facing recesses 14 and 21 can be reduced, so that the wobbling of the door 2 can be reduced. Can be prevented.

FIG. 12 shows a modification of the restriction recess 21. In this case, the restriction recess 21 is formed by a contour-shaped irregular recess of the cap, and only the contact pieces 21a at both ends thereof are brought into contact with the arcuate peripheral surface of the connecting portion 11. Thus, the regulation recess 1
The concave shape of 4.21 does not need to be a concave arc, and may be any shape that can circumscribe at least two points on the peripheral surface of the adjacent partner. The restriction recess 21 shown in FIG.
The side edge 19a of the connecting portion 19 that abuts against was formed along the outer tangent line at the center of the recessed portion of the regulation recess 21 of Example 1 to reduce the contact area of the regulation recess 21 to the connection portion 11.

[0028]

In addition to the above, the half-open shaft 7 and the full-open shaft 8 can be integrally provided on the rotation restricting bodies 27 and 28 which are formed as independent parts. The half-open angle of the door 2 can be arbitrarily set within a range from an acute angle to an obtuse angle, and the fully-open angle can also be arbitrarily set.
The stopper 25 may be provided on the fixed hinge body 4 side or the rotation restricting body 27 side. Connection parts 11 and 19 and rotation restricting body 2
The peripheral surface of 7.28 is preferably a circular arc surface . Fixed
The mounting structure of the movable hinge bodies 4 and 5 can be freely changed. For example, the fixed hinge body 4 may be attached to the ceiling surface or the bottom surface of the opening frame 1. The movable hinge body 5 may be attached to the upper and lower end surfaces of the door 2. Also in the third embodiment, similarly to the second embodiment, the pair of rotation restricting bodies 27, 28 can be provided, and the restricting recesses 14, 21 can be formed in these .

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view of a door hinge.

FIG. 2 is a front view of the cabinet with the upper and lower midsections omitted.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is an exploded perspective view of a door hinge.

FIG. 6 is a cross-sectional plan view showing the operation of the movable hinge body.

FIG. 7 is a cross-sectional plan view of a door hinge according to the second embodiment.

8 is a cross-sectional view taken along line CC in FIG.

FIG. 9 is a cross-sectional plan view of a door hinge according to a third embodiment.

10 is a cross-sectional view taken along the line DD in FIG.

FIG. 11 is an exploded perspective view of a door hinge.

FIG. 12 is a cross-sectional plan view showing a modified example of the restriction recess.

FIG. 13 is a cross-sectional plan view showing still another modified example of the restriction recess.

[Explanation of symbols]

1 Opening frame 2 doors 4 Fixed hinge body 5 Movable hinge body 6 Intermediate hinge body 7 Half open axis 8 fully open axis 11 Connection 14 Regulating recess 19 Connection 21 Regulated recess 27 Rotation restriction body 28 Rotation restriction body 30 lock pieces

Continuation of the front page (56) Reference JP-A-7-197726 (JP, A) JP-A-7-229355 (JP, A) JP-A-7-293098 (JP, A) JP-A-7-293097 (JP , A) JP 7-293096 (JP, A) JP 7-293095 (JP, A) JP 8-42235 (JP, A) Actual flat 5-71382 (JP, U) Actual flat 2-11983 (JP, U) Actual development Sho 62-176375 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E05D 7/081 E05C 17/28

Claims (3)

(57) [Claims] 1. A fixed hinge body 4 fixed to an opening frame 1.
And a movable hinge body 5 fixed to the door 2 and both hinge bodies 4
· 5 and an intermediate hinge member 6 connected, at the connection portion 11 and the intermediate hinge member 6 and the half-open shaft 7 of the fixed hinge body 4, fully open and connection 19 of the movable hinge member 5 and the intermediate hinge member 6 is Axis 8
And the hinges for the doors, which are connected to each other so as to be rotatable relative to each other, connecting the connecting portion 11 of the fixed hinge body 4 and the movable hinge body 5.
The portion 19 has an arcuate peripheral surface, and the connecting portion 11 of the fixed hinge body 4 is provided on one surface of the intermediate hinge body 6.
And the connecting portion 19 of the movable hinge body 5 are
Are disposed adjacent with a portion of the arcuate circumferential surface overlaps, the arcuate peripheral surfaces of the connecting portions 11, 19, adjacent the mating regulating Ru can circumscribing arc <br/> peripheral surface of the recess 14, 21 is They are respectively provided, and when the door 2 is in the closed position, the connecting portion 1 of the fixed hinge body 4 is provided.
Part of the circumferential surface of the circular arc 1 is a restriction recess 2 on the movable hinge body 5 side.
1, the movable hinge body 5 is centered on the fully open shaft 8.
The intermediate hinge body 6 is centered on the semi-open shaft 7 and cannot swing.
Open and swing so that when the door 2 is in the half open position,
The stopper 25 provided is provided for connecting the connecting portion 11 of the fixed hinge body 4.
Abut the side edge, and open the intermediate hinge body 6 beyond the half-open position.
When the door 2 is in the half-open position, the movable hinge body 5 side regulation recess is regulated.
The portion 21 faces the restriction recess 14 on the fixed hinge body 4 side.
And when the door 2 is in the half-open position, only the movable hinge body 5 is fully open.
A pivot type hinge for a door that can be opened and closed bidirectionally around 8 . 2. A fixed hinge body 4 fixed to the opening frame 1.
And a movable hinge body 5 fixed to the door 2 and both hinge bodies 4
· 5 and the intermediate hinge member 6 which connects the one pair of rotation restricting member 2
7, 28, and the connection between the connecting portion 11 of the fixed hinge body 4 and the movable hinge body 5.
And the portion 19 is disposed adjacent to the lower surface of the intermediate hinge body 6.
Ri, both the rotation regulating member 27, 28 in the upper surface of the intermediate hinge member 6, in a state where a part of the circular arc peripheral surface of both 27, 28 overlap are disposed adjacent, arc each rotational regulating member 27, 28 On the circumference,
Restricting recess 14, 21 that can be circumscribed in an arcuate peripheral surface has kicked respectively set <br/>, a fixed hinge member 4 and the half-open shaft 7 and one of the rotation restricting member 27
Are connected so that they cannot rotate relative to each other, and
The body 5, the fully open shaft 8 and the other rotation restricting body 28 are relatively rotated.
The fixed hinge body 4 and the one rotation restricting body 27 are immovably connected to each other, and are relatively rotatably connected to the intermediate hinge body 6 via the half-open shaft 7. The rotation restricting body 28 is rotatably connected to the intermediate hinge body 6 via the fully open shaft 8, and when the door 2 is in the closed position, the rotation restricting body on the fixed hinge body 4 side.
A part of the circular arc peripheral surface of the control body 27 rotates on the movable hinge body 5 side.
The movable hinge has entered the restriction recess 21 of the restriction body 28 and
The body 5 cannot open and swing around the fully open shaft 8 and has an intermediate hinge.
The body 6 can open and swing about the half-open shaft 7.
And the door 2 is in the half-open position, the intermediate hinge body 6
The stopper 25 provided is provided for connecting the connecting portion 11 of the fixed hinge body 4.
Abut the side edge, and open the intermediate hinge body 6 beyond the half-open position.
Swinging is regulated, and when the door 2 is in the half-opened position, the swinging regulation on the movable hinge body 5 side.
The regulation recess 21 of the control body 28 is a rotation regulation on the fixed hinge body 4 side.
It faces the restriction recess 14 of the control body 27, and when the door 2 is in the half-open position, only the movable hinge body 5 is fully opened.
A pivot type hinge for a door that can be opened and closed bidirectionally around 8 . 3. A fixed hinge body 4 fixed to the opening frame 1.
And a movable hinge body 5 fixed to the door 2 and both hinge bodies 4
· 5 and an intermediate hinge member 6 connected, at the connection portion 11 and the intermediate hinge member 6 and the half-open shaft 7 of the fixed hinge body 4, fully open and connection 19 of the movable hinge member 5 and the intermediate hinge member 6 is Axis 8
The hinges for doors are connected to each other so as to be rotatable relative to each other, and the connecting portion 11 of the fixed hinge body 4 is provided on one surface of the intermediate hinge body 6.
And the connecting portion 19 of the movable hinge member 5 are next <br/> contact spaced apart E, the lock piece 30 between adjacent circumferential surfaces of the two connecting portions 11, 19 is
Are via instrumentation, ho that moves and guides the lock piece 30 horizontally moves only freely
It has a rudder 31, and this holder 31 has both connection parts 11 and
19 is covered and fixed by the half-open shaft 7 and the full-open shaft 8.
In which a part of the circular arc peripheral surfaces of both connecting portions 11, 19, the lock piece 30 and alternatively the restriction recessed portion 14, 21 which engage are provided <br/> respectively, closed position the door 2 From the half open position
The piece 30 enters the restriction recess 21 on the movable hinge body 5 side.
The movable hinge body 5 opens and swings around the fully open shaft 8
It cannot move and the intermediate hinge body 6 opens around the half-open shaft 7.
When the door 2 is in the half-open position, the intermediate hinge body 6 can be swung.
The stopper 25 provided is provided for connecting the connecting portion 11 of the fixed hinge body 4.
Abut the side edge, and open the intermediate hinge body 6 beyond the half-open position.
When the door 2 is in the half-open position, the movable hinge body 5 side regulation recess is regulated.
The portion 21 faces the restriction recess 14 on the fixed hinge body 4 side.
The lock piece 30 is one of the two restriction recesses 14 and 21.
The lock piece 30 is movable to the other side when the door 2 is in the half open position.
Fixed hinge body pushed out from the regulation recess 21 on the side of the body 5
When entering the restriction recess 14 on the 4 side, only the movable hinge body 5
Is a pivot type door hinge that can swing in both directions of opening and closing around the fully open shaft 8 .