JPH07150850A - Door hinge - Google Patents

Abstract

PURPOSE:To select the door opened in two stages of a half open and a full open in a pipe hinge type door hinge with two hinge shafts. CONSTITUTION:A pair of left and right hinge bodies 4, 5 and an intermediate hinge body 6 mounted between both hinge bodies 4, 5 are connected by a first shaft 7 and a second shaft 8. Stoppers 21, 22 temporarily controlling the quantites of opening are installed among the intermediate hinge body 6 and boss sections 11, 17 for coupling each hinge body 4, 5 respectively. A guide cylinder 18 bent in a U-shape is set up to the intermediate hinge body 6. A first lock tool 23 and a second lock tool 24 are supported at both ends of a guide cylinder 18 in a freely forward-backward movable manner respectively. Transmission bodies 25 composed of a group of balls 25a made of steel between both lock tools 23, 24 are arranged into the guide cylinder 18. A first recessed section 12 and a second recessed section 13 are formed to the boss sections 11, 11 of the hinge bodies 4, 5 in response to each lock tool 23, 24, and both lock tools 23, 24 are engaged alternatively with each recessed section 12, 13 by utilizing the opening-closing operation of a door 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door hinge capable of temporarily restricting the opening operation of a door in a half-open position and selecting a door opening amount in two steps of a half-open position and a fully-open position.

[0002]

2. Description of the Related Art Door hinges of this type are known as 3-121
It is known in Japanese Patent Publication No. 38-38. This door hinge is a pivot hinge type having two hinge shafts, has three hinge plates that are vertically stacked, and a second hinge plate sandwiched between the first and third hinge plates is a first hinge plate. The third hinge plate can rotate 90 degrees around the axis, and the third hinge plate can rotate 90 degrees around the second axis. The second hinge plate incorporates a lock tool for opening and closing the second hinge plate and the third hinge plate in the order described. The locking member engages with either the first hinge plate or the third hinge plate. Between the first and second hinge plates and between the second and third hinge plates, a pair of arcuate groove and pin for restricting the opening degree of the second and third hinge plates by 90 degrees are provided, respectively. There is. Japanese Utility Model Laid-Open No. 2-11983, Japanese Utility Model 1-
The same type of door hinge is disclosed in Japanese Patent No. 138080 and Japanese Utility Model Laid-Open No. 63-76177.

[0003]

In the conventional door hinge described above, the first hinge plate is fixed to the furniture main body side, the third hinge plate is fixed to the door side, and the door is supported at the upper and lower ends of the hanging base. Take the form. Therefore, it is inevitable that the upper and lower door hinges are exposed at the upper and lower corners of the door when the door is closed. As the size and weight of the door change, it is necessary to prepare several types of door hinges having different load resistance values, which causes a problem of high manufacturing cost.

An object of the present invention is to provide a pipe hinge type door hinge having two hinge shafts and capable of selecting a door opening amount in two steps of a half open position and a fully open position. Another object of the present invention is to provide a pipe hinge type door hinge having two hinge shafts, which can cover the hinge with the door when the door is closed, like the hidden hinge.

[0005]

The door hinge of the present invention comprises:
A pair of hinge bodies 4 and 5 each having a boss portion 11 on one end and boss portions 17 and 17 on both ends are connected to each hinge body 4.5 by a first shaft 7 and a second shaft 8. And an intermediate hinge body 6. The intermediate hinge body 6 is provided with a guide cylinder 18 that is bent in a U shape along a plane that intersects the central axis of the hinge and is open at both ends. A first lock tool 23 and a second lock tool 24 are respectively supported at the open ends of the guide cylinder 18 facing the peripheral surfaces of the boss portions 11 of the hinge bodies 4 and 5 so as to be retractable, and the boss portions are provided. 11 and 11, the first recess 12 and the second recess 13 corresponding to the locks 23 and 24, respectively.
And, respectively. A transmission body 25 that transmits the withdrawal movement of one lock tool 23 to the other lock tool 24 is arranged between both lock tools 23 and 24 in the guide cylinder 18. The stoppers 21 and 22 for restricting the opening amounts of the intermediate hinge body 6 and the respective hinge bodies 4 and 5 are provided between the one hinge body 4 and the intermediate hinge body 6 and between the other hinge body 5 and the intermediate hinge body 6. Provide each in between. At the half-open position defined by the one stopper 21, the first lock tool 23 and the first recess 12, and the second lock tool 24 and the second recess 13 are arranged to face each other in a disengageable manner. Specifically, the intermediate hinge body 6 is composed of a main plate 15 and a cover 16 each of which is bent in a U-shaped cross section and joined in a state of overlapping inside and outside, and a groove 19 having a U-shaped cross section provided in the main plate 15. The guide cylinder 18 is constituted by the cover 16 that closes the opening surface of the groove 19. Transmission 2
5 is composed of a large number of steel balls 25a.

[0006]

In use, one of the pair of hinge bodies 4 and 5 is fixed to the inner surface of the opening frame 2 and the other is fixed to the inner surface of the door 3. In the door closed state, the second lock tool 24 engages with the second recess 13 provided in the hinge body 5 on the door 3 side, and the first lock tool 23 moves around the boss portion 11 in which the first recess 12 is formed. Holds on the face. Therefore, the hinge body 5 and the intermediate hinge body 6 on the door 3 side cannot rotate relative to each other, and the door 3 can be opened and moved to the half-open position by swinging the intermediate hinge body 6 around the first shaft 7. In this half-open position, the door 3
A stopper 21 is provided between the intermediate hinge body 6 and the hinge body 4 on the side of the opening frame 2 in order to temporarily restrict the opening operation of the. Another stopper 22 regulates the opening angle of the door 3 in the fully open position.

In the half-opened position, the first locking device 23 is located on the outer surface of the first recess 12, and both locking devices 23.
4 and the transmission body 25 are in a state of being movable in the guide cylinder 18 only in the direction in which the first lock tool 23 engages with the first recess 12. Therefore, when the door 3 is further opened, as shown in FIG. 7, the recess wall of the second recess 13 pushes out the second lock tool 24 to release the lock engagement there.
Instead, the first locking tool 23 engages with the first recess 12,
Rotation of the intermediate hinge body 6 and the hinge body 4 on the opening frame 2 side is prevented. As described above, the reason why the two locks 23 and 24 are selectively engaged with either one of the hinge bodies 4 and 5 is that the intermediate hinge body 6 is engaged during door closing and door opening operations.
This is to prevent both and the hinge body 5 on the door 3 side from rotating at the same time, and to perform the specified sequential operations.

One of the pair of hinge bodies 4 and 5 is fixed to the opening frame 2 and supports the first shaft 7 and one end of the intermediate hinge body 6 inside the opening surface. 180 door 3 in this state
In order to fully open up to an opening angle of about 10 degrees, it is necessary to rotate the second shaft 8 around the first shaft 7 and position it on the outer surface of the opening frame 2 in the half-opened state. In order to prevent the intermediate hinge body 6 from coming into contact with and interfering with the opening frame 2 during the rotation to the half-open position, the guide cylinder 18 is bent and formed in a U shape along a plane intersecting with the hinge central axis. There is.

[0009]

According to the present invention, two hinge shafts are formed by the intermediate hinge body 6 provided with the guide tube 18 that is bent in a U shape, and the pair of hinge bodies 4 and 5 connected to both ends of the intermediate hinge body 6. A pipe hinge type door hinge with a middle hinge body 6
And a stopper 21 provided between the hinge body 4 on the side of the opening frame 2
Thus, the opening operation of the door 3 is temporarily restricted at the half-open position.
Further, a first lock tool 23 and a first recess 12, and a second lock tool 24 and a second recess 13 are provided between both open ends of the guide cylinder 18 and the boss portions 11 of the hinge bodies 4 and 5, respectively. The locks 23 and 24 are provided respectively, and the locks 23 and 24 are selectively engaged with the recesses 12 and 13, respectively, and the intermediate hinge body 6 and the hinge body 5 on the door 3 side are opened in a prescribed order. Alternatively, it can be closed. As a result, a pipe hinge type door hinge in which the door opening amount can be selected in two steps of a half-open position and a full-open position is obtained, and even in the case of the door 3 which is difficult to apply with the conventional pivot type door hinge, the door opening amount can be increased. Can be selected in two steps to improve its usability. Since the guide cylinder 18 is bent in a U shape so that both the hinge bodies 4 and 5 and the intermediate hinge body 6 can be arranged on the inner surface side of the door, the door hinge is prevented from being exposed to the outer surface of the door when the door is closed. However, the appearance of the door 3 can be improved. As many door hinges as necessary can be attached to the door 3, and by changing the number of attachments, it is possible to respond to changes in the size and weight of the door 3, so even if the size and weight of the door 3 change over a wide range, It suffices to prepare several types of door hinges having different load bearing capacities, and the manufacturing cost of the door hinges can be reduced accordingly.

[0010]

1 to 7 show an embodiment of a door hinge according to the present invention. In FIG. 2, reference numeral 1 is an office cabinet, 2 is an opening frame, and 3 is a door. Door 3 is opening frame 2
The closing operation can be made flush with the outer surface of the, and the fully opening operation can open 180 degrees from the closed position. Inner surface of door and opening frame 2
The door hinges H of the present invention are provided at two upper and lower positions on the inner surface of the door.

In FIG. 3, a door hinge H is a pair of left and right hinge bodies 4 mounted on the inner surfaces of the opening frame 2 and the door 3.
5 and an intermediate hinge body 6 arranged between both hinge bodies 4 and 5.
And a first shaft 7 and a second shaft 8 which connect the hinge bodies 4 and 5 and the intermediate hinge body 6 so as to be rotatable relative to each other.
Each of the left and right hinge bodies 4 and 5 has a seat plate 10 having screw holes provided above and below the plate surface, and is a press-formed product in which a boss portion 11 is integrally bent at one end of the seat plate 10. As shown in FIG. 4, a spherical first concave portion 12 and a second concave portion 13 are formed at one circumferential position of each boss portion 11 in correspondence with lock tools 23 and 24 described later. The formation positions of the recesses 12 and 13 are different between the hinge body 4 on the opening frame 2 side and the hinge body 5 on the door 3 side. As shown in FIG. 5, the former hinge body 4
Then, the first recessed portion 12 is provided at a position where the phase is shifted by 90 degrees in the clockwise direction from the bent base end of the boss portion 11. In the latter hinge body 5, the second concave portion 13 is provided at a position where the phase is shifted by 180 degrees in the counterclockwise direction from the bent base end of the boss portion 11.

In FIG. 4, the intermediate hinge body 6 is formed by joining a main plate 15 and a cover 16 each having a U-shaped cross section in a state of being overlapped with each other inside and outside. Two boss portions 17 are integrally bent and formed, and a guide cylinder 18 that is bent in a U shape along the center of the plate surface is provided. The guide cylinder 18 is formed of a groove 19 having a U-shaped cross section that is recessed in the plate surface of the main plate 15, and the cover 16 that closes the opening surface of the groove 19, and the central axis thereof is the first shaft 7 and the first shaft 7. Along the plane orthogonal to the hinge central axis of the biaxial 8. The respective bosses 17 and 17 and the bosses 11 and 11 of the left and right hinge bodies 4 and 5 are connected to the first shaft 7 and the second shaft 8.
By connecting with each other, the left and right hinge bodies 4 and 5 and the intermediate hinge body 6 can relatively rotate around the respective shafts 7 and 8. In this connected state, the open ends of the guide cylinders 18 face the peripheral surfaces of the boss portions 11 of the left and right hinge bodies 4 and 5, respectively.

In order to control the opening amount of the intermediate hinge body 6 with respect to the hinge body 4 on the side of the opening frame 2, each boss portion 11 is regulated.
・ Provide stoppers 21 on the upper and lower portions of 17. Similarly, in order to regulate the opening amount of the hinge body 5 on the door 3 side with respect to the intermediate hinge body 6, another stopper 22 is provided at the vertically adjacent portions of the respective boss portions 11 and 17. In FIG. 6, both stoppers 21 and 22 are formed by cutting out the joint ends of the bosses 11 and 17 by a predetermined angle and forming a pair of stepped portions 11a and
It is composed of 17a and has a structure in which the angle between the step portions 11a and 17a is 90 degrees, and the rotation of the coupling partner is allowed only within this angle range.

When the door 3 is opened, only the intermediate hinge body 6 is opened and rotated from the closed position to the half open position, and only the hinge body 5 on the door 3 side is opened and rotated from the half open position to the fully open position. In addition, as shown in FIG.
The first and second locking members 23 and 24 are fitted in the openings at both ends of the to support each of them so that they can be retracted and retracted. Further, in the guide cylinder 18, a transmission body 25 composed of a group of steel balls 25a is arranged between both locks 23 and 24 without a gap. Each of the locks 23 and 24 is formed in a rivet shape, and has spherical heads 23a and 24a that engage with the first recess 12 and the second recess 13 at one end of the shaft portion. When the door is closed as shown in FIG.
The second lock tool 24 is circumscribed on the peripheral surface of No. 1 and is engaged with the second recess 13. Therefore, the hinge body 5 and the intermediate hinge body 6 on the side of the door 3 cannot rotate relative to each other, and the intermediate hinge body 6 does not move.
It can be rotated relative to the hinge body 4 on the side.

Next, the operation of the door hinge H when opening and closing the door 3 will be described. In the door closed state, the stoppers 21 and 22 are both the intermediate hinge body 6 and the hinge body on the door 3 side as shown in FIG. It is in a state in which the opening and rotation of 5 is permitted. However, since the second lock 24 is engaged with the second recess 13, the hinge body 5 on the door 3 side cannot be opened and rotated. Therefore, when the door 3 is opened, the hinge body 5 and the intermediate hinge body 6 rotate together with the first shaft 7. When the opening angle of the door 3 reaches 90 degrees,
The step portions 11a and 17a of the stopper 21 on the side of the first shaft 7 come into contact with each other to prevent the intermediate hinge body 6 from further opening and rotating. That is, the door 3 is temporarily restricted from opening and rotating in the half-open position.

When the amount of documents or articles to be put into or taken out of the cabinet 1 is very small, it suffices to open the door 3 to the half-open position. However, when a large amount of documents or the like is taken in or out, or when the inside of the cabinet is cleaned, the door 3 protrudes to the front of the cabinet 1, which is an obstacle.
In preparation for such a case, the door 3 can be further opened to the fully open position.

In the half-opened position, the second locking member 24 and the second recess 13 are engaged with each other, and the first locking member 23 is located on the outer surface of the first recess 12 and corresponds to the depth of the first recess 12. It is ready to move (see Fig. 1). Therefore, when the door 3 is operated to open, the moment acts on the head portion 24a of the second lock tool 24 via the boss portion 11 of the hinge body 5, and as shown in FIG. Two
It is pushed out by the recess wall of the recess 13 and the lock engagement state there is released. As a result, the door 3 can be opened and rotated about the second shaft 8 to the fully open position without any trouble. On the other hand, since the retreat operation of the second lock tool 24 is transmitted to the first lock tool 23 via the transmission body 25, the second lock tool 24 is pushed out of the second recess 13 and at the same time, the first lock tool 24 is pushed out. 23
Enter into the first recess 12 and engage. In this way, by selectively switching the engagement states of the locks 23 and 24 and the recesses 12 and 13, the intermediate hinge body 6 and the hinge body 5 can be sequentially opened and rotated.

When the door 3 is closed, the second lock 24 is in the disengaged state, so the door 3 is closed and rotated about the second shaft 8 from the fully open position to the half open position.
The stopper 22 tentatively regulates the closing rotation at the half-open position. When the door 3 is further closed from this state, the first lock tool 23 is pushed out of the first recess 12, and the second lock tool 24 engages with the second recess 13 instead. The intermediate hinge body 6 accompanies the hinge body 5 on the door side, closes and rotates around the first shaft 7, and returns to the door closed state of FIG.

When the door 3 is opened to the half open position, the second shaft 8 is located outside the outer surface of the opening frame 2. At this time, in order to prevent the intermediate hinge body 6 from coming into contact with and interfering with the opening frame 2, the intermediate hinge body 6 and the guide cylinder 18 are each bent in a U-shaped cross section.

FIG. 8 shows a modified embodiment of the intermediate hinge body 6. There, the guide tube 1 is made of a pipe material 26 bent in a U shape.
8 is formed, and the intermediate hinge body 6 is constituted by the pipe member 26 and the pair of left and right hinge plates 27 and 28 welded to both ends of the pipe member 26.

In addition to the above, the intermediate hinge body 6 can be formed by a die cast molding product or a plastic molding product. The guide cylinders 18 can be provided at a plurality of upper and lower positions of the intermediate hinge body 6. In this case, the left and right hinge bodies 4
5 is provided with a plurality of boss portions 11. As the transmission element of the transmission body 25, a roller, a flexible shaft, a chain, or the like may be applied instead of using the ball 25a, or a combination thereof may be used. Left and right locks 23, if necessary
Oil can be enclosed between 24 to make the liquid a transmission element. Both locks 23 and 24 can use a short shaft with one end or both ends rounded into a hemispherical shape, and steel balls may be applied depending on the case. INDUSTRIAL APPLICABILITY The door hinge of the present invention can be applied to various doors such as doors for furniture and office furniture and doors for buildings. The opening angle when the door 3 is half-opened can be arbitrarily set within a range from an acute angle to an obtuse angle. The opening angle when fully opened can be freely selected other than 180 degrees.

In the above embodiment, the hinge body 4 is attached to the opening frame 2.
Although it is mounted on the inner surface of the hinge body 4, it is not necessary to mount the hinge body 4 on the side section wall orthogonal to the opening frame 2. The stoppers 21 and 22 do not have to be provided between the boss portions 11 and 17 that are vertically adjacent to each other, and can be anywhere between the hinge body 4 and the intermediate hinge body 6 and the intermediate hinge body 6 and the hinge body 5 connected to each other. It may be provided. For example, the boss 17
And the seat plate 10 or between the boss 11 and the main plate 15. In the above embodiment, the ball 25
A compression coil type spring can be interposed at an intermediate position of a. In this case, the first lock member 23 can be engaged with the first recess 12 at the same time when the door 3 is opened to the half-open position.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view of a door hinge in a half-open position.

FIG. 2 is a perspective view showing an application example of a door hinge.

FIG. 3 is a front view of a door hinge in a fully closed position.

FIG. 4 is an exploded perspective view of a door hinge.

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

FIG. 6 is a sectional view taken along line BB in FIG.

FIG. 7 is an explanatory diagram showing a switching operation of a lock tool.

FIG. 8 is a vertical sectional side view showing another embodiment of the intermediate hinge body.

[Explanation of symbols]

 2 Opening frame 3 Door 4 Opening frame side hinge body 5 Door side hinge body 6 Intermediate hinge body 7 First shaft 8 Second shaft 12 First recess 13 Second recess 17 Boss 18 Guide tube 21 Stopper 22 Stopper 23th 1 lock tool 24 second lock tool 25 transmission body

Claims (3)

[Claims] 1. A pair of hinge bodies 4, 5 each having a boss portion 11, 11 at one end and boss portions 17, 17 at both ends, wherein each hinge body 4, 5 has a first shaft 7 and a second shaft. 8 is provided with an intermediate hinge body 6, which is provided with a guide tube 18 that is bent in a U shape along a plane intersecting the hinge central axis and has open ends. The first lock tool 23 and the second lock tool 24 are respectively supported at the open ends of the guide cylinder 18 facing the peripheral surfaces of the boss portions 11 of the hinge bodies 4 and 5 so as to be retractable, and the boss portions are provided. The first recess 12 and the second recess 13 are provided in 11/11 corresponding to the respective lock tools 23 and 24, and the movement of the one lock tool 23 is transmitted to the other lock tool 24. The transmission 25 is used to lock the two locks 2 in the guide cylinder 18.
The stoppers 21 and 22 arranged between the third hinge 24 and the intermediate hinge body 6 for restricting the opening amount of the intermediate hinge body 6 and the respective hinge bodies 4,5 are provided between the one hinge body 4 and the intermediate hinge body 6 and the other. Hinge body 5 and intermediate hinge body 6
And the half-open position defined by the stopper 21 on one side,
A door hinge in which a first lock tool 23 and a first recess 12, and a second lock tool 24 and a second recess 13 are arranged to face each other in a disengageable manner. 2. The intermediate hinge body (6) is composed of a main plate (15) and a cover (16) which are respectively bent in a U-shaped cross section and joined in a state of being overlapped inward and outward. The door hinge according to claim 1, wherein the guide cylinder (18) is composed of the groove (19) and the cover (16) closing the opening surface of the groove (19). 3. A steel ball 25 having a large number of transmission bodies 25.
The door hinge according to claim 1 or 2, which comprises a.