JP2006083628A - Invisible hinge, door including the hinge, and method for mounting the hinge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a biaxial type invisible hinge with lightweight and simplified structure. <P>SOLUTION: The hinge for mounting a door 3 in an openable/closable manner to a frame 1 of an opening is composed of two sets of frames provided with pins 14 serving as the rotational center, and a connecting member 21 bent at the ends to form bearings 25 at both tips. The pins of the frames and the bearings are turnably fitted and integrated to form the invisible hinge structured to transmit the motion of one bearing in opening/closing operation to the other bearing through the connecting member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hidden hinge for opening and closing a door to an opening frame, a door incorporating the hinge, and a method for attaching the hinge.

  There are many types of hinges that attach the door to the frame of the opening. However, when viewed from the installed state of the hinge with respect to the closed door, the type of the hinge can be seen from either the inside or outside of the door or from either side, and the hinge is not used at all. Divided into types. Both types have more usage than visible ones.

  A typical hinge that can be seen is based on a structure in which two blades are pivotally connected around a single shaft. There are hinges that are divided into a flag type that is detachable. In both types, in order to open the door 90 degrees or more with respect to the frame, it is necessary to protrude the connecting portion from the joint between the frame and the door. Moreover, the protrusion amount of a connection part may become obstructive by the positional relationship of a wall and an opening part, and the opening / closing direction of a door may be restrict | limited.

  The invisible type is also called a hidden hinge, and the frame and the two frames attached to the door are connected by multiple shafts and links, and the holes formed in each frame change the shape due to the expansion and contraction of the links. Absorb. When the door starts to open, the link approaches, and when it opens, a triangular link projects into the opening with the connecting shaft as a boundary. The hidden hinge is used for an opening / closing member that requires a flush structure because it is difficult to form a gap by closely contacting the other party when the door is opened 180 degrees.

There is [Patent Document 1] as a prior art using a link structure related to a hidden hinge. This document is a structure in which two links connected by two fixed shafts and three movable shafts are connected between two casings, and a slide function and a hidden hinge are attached to the two movable shafts. A technique to which a position adjustment function is added is disclosed.
JP-A-6-288139

  The hidden hinge built in the frame and the door is not visible at all when the door is closed, so that the appearance is improved. However, the hinge structure is complicated and has a problem of high cost. Although the link mechanism of [Patent Document 1] has an excellent structure, since a link with a large number of parts and a complicated shape is used, it can be easily estimated that the movement is complicated. In addition, the situation in which the link protrudes in a triangular shape when the door is open is not desirable for people and objects to enter and exit. An object of the present invention is to solve the above problems and to provide a low cost hidden hinge with a simple structure.

The present invention provides a hinge for attaching the door to the frame of the opening,
Opening and closing operation is made up of two sets of frames with pins that become the center of rotation and a connecting material that is bent at both ends and bearings are formed at both ends, and the pins of the frame and the bearings are rotatably fitted. Hidden hinge with a structure that transmits the movement of one bearing to the other bearing through a connecting material,
A door incorporating the hidden hinge;
When attaching two sets of hidden hinges to the frame and door of the opening with a center distance H, the ratio of the gap δ to the width L formed by fitting a pin having an outer diameter d and a bearing having a width L with a hole diameter D δ / This is a hidden hinge mounting method in which the inequality δ / L> P / H is established between L and the interval P between the bearings held by the connecting material and the ratio P / H of the center distance H of the upper and lower hinges.

The following effects were obtained by using the hidden hinge.
1) The structure with a pin-equipped frame and a bearing-equipped connecting material can simplify the structure, enabling low-cost hinge manufacturing.
2) The simple structure reduces the burden required for maintenance.
3) The part of the projecting part that protrudes during the opening and closing process of the door will be released once it has been opened, and will not interfere with the entry or exit of people or objects.
4) Since the installation conditions and position can be adjusted with hinge accuracy, the work is easy.
5) Just apply a small amount of oil during assembly to withstand long-term use without contaminating the surroundings.

  Combining two frames with pins that serve as the center of rotation and a connecting material that forms a bearing at the tip of the plate bent in an inverted U shape, and two centers of rotation where the pins and bearings are rotatably fitted It is a built-in hidden hinge. A plate-like material is used for the frame and connecting material, so that it can be formed mainly by drilling and bending. Therefore, a structure that does not require labor and cost such as cutting, or is minimized even if necessary. The door used in the description of the present invention is defined as including an opening / closing material composed of one or more sheets, regardless of size, such as a revolving door, a folding door, or a box door.

  The hidden hinge can be given a function of adjusting the mounting position in two directions, front and rear and left and right. Two L-shaped materials corresponding to the divided state of the connecting material connecting the frames are connected by another connecting material, and a combination of a position adjusting push screw and a pulling screw is incorporated in the connecting portion of the L-shaped material and the connecting material. . An L-shaped material connected by a connecting material is connected to a frame having a double structure of the outer frame and the inner frame. The movement of the rotation center that occurs in the two directions of front and rear and left and right by the position adjustment is absorbed by the change in the relative position of the door with respect to the frame.

  Normally, two hinges are used for mounting the door, but mounting the door so that the virtual axis shares the rotation center of the two shafts is a condition for smoothly opening and closing the door. The same applies to the hidden hinge of the present invention, but the conditions are different because two rotation centers are incorporated. That is, as shown in FIG. 1 (A, B, C), the ratio δ / L of the pin used at the rotation center and the play δ of the bearing, the width L of the bearing, the interval P between the rotation centers, and the interval between the two hinges. That is, δ / L <P / H is established between the H ratio P / H.

  Since the two hidden hinges have two rotation centers A and B and A 'and B', the movement of the hidden hinges satisfies δ / L <P / H as shown in FIG. Then, the rotation center A and A ′ or B, B ′ share the virtual axis, and the door opens and closes smoothly. However, as shown in FIG. 1B, when the movement of the hidden hinge satisfies the relationship of δ / L> P / H, the rotation center A and B ′ or B, A ′ share the virtual axis, and the door The virtual axis that should be parallel is tilted, and twisting acts on the hidden hinge, preventing smooth opening and closing of the door. As a result, it leads to generation of itchiness and damage.

  2A, 2B, and 2C are a front view, a side view, and a plan view of the hidden hinge 11, respectively. FIG. 3 is an exploded perspective view. 4A and 4B are cross-sectional views of the hidden hinge in which the door is in the closed state and the open state. FIG. 5 is a locus diagram of the connecting material when the rotation of the frame side bearing of the hidden hinge precedes in the door opening and closing process. FIG. 6 is a locus diagram of the connecting material when the door side bearing of the hidden hinge precedes rotation in the door opening and closing process.

As shown in FIGS. 2 (A, B, C) and FIG. 3, the hidden hinge 11 is composed of left and right frames 12 and a connecting member 21. The frame has two pins 14 that are the center of rotation and two pins 15 for regulation.
, One pin is used for connection with the connecting material, and the other pin is used for restricting the movement of the hidden hinge. The pins used for regulation may not be used depending on the size, weight and application of the door. Although caulking is used as a means for fixing the frame and the pin, other methods may be used. The frame and the pin are fixed after the bearing 25 is inserted. Moreover, it is desirable to insert the thrust material 18 that can contain oil into the contact surface between the frame and the bearing when inserting the pins into one or both sides.

  The connecting member 21 forms a bearing 25 that loosely engages with the pin 14 serving as the center of rotation at the tip of a bent plate 22 in which the end of the flat plate is bent into an L shape. The fitting between the bearing and the pin at the center of rotation of the frame 12 needs to satisfy the conditions described in [0010]. As shown in FIGS. 4A and 4B, in the hidden hinge, the frame 12 is stored in the hole 2 of the frame 1 and the hole 4 of the door 3 and fixed with screws 17 using the mounting holes 16. When the door is closed, the outer surface 24 of the bent plate hits the bottom 13 of the frame, and when the door has been opened, the inner surface 23 of the bent plate contacts the pin 15 and restricts the turning of the door more than necessary.

  In the hidden hinge 11, it is preferable that the two rotation centers operate simultaneously when the door 3 is opened and closed. However, since each rotation center is independent, one of them actually starts to move first. However, no matter how the two rotation centers move, if the upper and lower hidden hinges move in the same way, it will not interfere with the opening and closing of the door, and there will be no change in the fit. . Part of the connecting material 21 protrudes during the door opening and closing process, but the amount of protrusion is less than that of the conventional link type, and when the door is opened, the protruding part will be within the thickness of the connecting material, which may hinder people and objects from entering and exiting. There is almost no.

  FIG. 5 and FIG. 6 are locus diagrams of the connecting member 21 at both extremes where the rotation of the bearing 25 on the frame 1 side or the door 3 side is preceded in the opening and closing process, and the other bearing starts rotating after the completion of the rotation. did. In any case, when the door is closed, the bent plate outer surface 24 of the connecting material is in contact with the bottom plate 13 of the frame 12 and the overturning of the door is restricted. FIG. 5 shows a state in which the door and the door-side bearing move while maintaining the initial state until the frame-side bearing rotates 90 degrees, and when the frame-side bent plate inner surface 23 contacts the pin 14, the door itself starts moving. Showed the trajectory. FIG. 6 shows a trajectory in a state in which the door stops and the bearing on the frame side starts rotating when the door itself rotates 90 degrees and the inner surface of the bent plate on the door side contacts the regulating pin. The actual movement may differ from both figures depending on the familiarity of the pin and the bearing at the center of rotation.

  7A, 7B, and 7C are a front view, a side view, and a plan view of the hidden hinge 31 provided with a function of adjusting the mounting position in the front-rear and left-right directions. FIG. 8 is an exploded perspective view. 9A and 9B are cross-sectional views of the hidden hinge in which the door is in the closed state and the open state. FIGS. 10A, 10B, and 10C are operation diagrams of the device that adjusts the attachment position of the hidden hinge in two directions, front and rear and left and right. Since the basic structure and operation of this example and Example 1 are the same, the part relating to the adjustment of the mounting position will be mainly described below in this section, and Example 1 will be cited for other parts.

  As shown in FIGS. 7 (A, B, C) and FIG. 8, the frame 32 is composed of inner and outer frames 33, 41. The inner frame with the pin 35 at the center of rotation fits in the outer frame, and the mounting screw is made using the hole 36. 37 and screw holes 42. At the tip of the bending material 46, two horizontal plates of L-shaped material 45 with bearings 47 are received by the connecting material 51, and a set of push screw 53 and pull screw 54 are attached to the connecting portion between the connecting material and the L-shaped material. Connecting. The bent projections 52 provided at the four corners of the connecting member are combined with the notches 48 at both ends of the bent portion of the L-shaped member. After the thrust member 38 is sandwiched between the inner frame and the L-shaped material bearing and the pin is rotatably inserted, the pin is fixed to the inner frame.

As shown in FIGS. 9A and 9B, the state of the hidden hinge 31 attached to the frame and the door is almost the same as that of the first embodiment. The movement of the member when the mounting position in both the front and rear and the top and bottom directions is adjusted will be described with reference to FIGS. 10 (A, B, and C). When the L-shaped material 45 and the connecting material 51 are connected without a gap, the position of the center of the bearing 47 of the two L-shaped materials is indicated by a width W and a height H. If the left pull screw 54 is loosened with the left bearing as a reference and the push screw 53 is tightened, an angle is formed at the joint of the L-shaped material and the connecting material to form a gap. At this time, the right rotation center has a width WA and a height HA with respect to the left rotation center, and changes from the initial position by wa and ha.

  Subsequently, when the right pull screw 54 is loosened and the push screw 53 is tightened, an angled gap is formed at the joint between the L-shaped member 45 and the connecting member 51. At this time, the right rotation center has a width WB and a height HB with respect to the left rotation center, and changes by wb (wb> wa) and hb (hb> ha) from the initial position. As a result, the attachment position of the hidden hinge 31 can be adjusted to the front and rear and to the left and right. The movement allowance in the two directions of front and rear and left and right resulting from the change in width and height is absorbed by the relative movement of the door 3 with respect to the frame 1.

(A, B, C) is explanatory drawing of the attachment conditions of a hidden hinge. (A, B, C) are a front view, a side view, and a plan view of a hidden hinge. (Example 1) It is a disassembled perspective view. (A, B) is sectional drawing of the hidden hinge in which a door is in a closed state and an open state. It is a locus diagram of the connecting material when the bearing on the frame side of the hidden hinge precedes the rotation in the door opening and closing process. It is a locus | trajectory figure of a connection material when the bearing of the door side of a hidden hinge precedes rotation in the opening / closing process of a door. (A, B, C) are a front view, a side view, and a plan view of a hidden hinge provided with a function for adjusting the mounting position in two directions, front and rear, and up and down. (Example 2) It is a disassembled perspective view. (A, B) is sectional drawing of the hidden hinge in which a door is in a closed state and an open state. (A, B, C) is a detailed view of the operation of the device for adjusting the mounting position of the hidden hinge in the two directions of front and rear and up and down.

Explanation of symbols

1 Frame 3 Door 11, 31 Hidden hinge 12, 32 Frame 14, 35 Pin (for rotation center)
15 pin (for regulation)
18, 38 Thrust material 21, 51 Connecting material 22, 46 Bending material 25, 47 Bearing 33 Inner frame 41 Outer frame

Claims (5)

The hinge that attaches the door (3) to the frame (1) of the opening,
It consists of two sets of frames (12, 32) with pins (14, 35) as the center of rotation, and connecting members (21, 51) with the ends bent to form bearings (25, 47) at both ends. A hidden hinge having a structure in which the pin of the frame and the bearing are rotatably fitted to transmit the movement of one of the bearings in the opening / closing operation to the other bearing through a connecting member.   The hidden hinge according to claim 1, wherein the pin (15) is arranged on the frame (12) in line with the pin (14) at the center of rotation.   The connecting member (51) is disposed so as to receive the L-shaped member (45) in which the bearing (47) is formed at both bent ends, and a combination of a push screw (53) and a pulling screw (54) is provided between the two. The hidden hinge according to claim 1 connected.   A door incorporating the hidden hinge according to claim 1. When attaching two sets of hidden hinges (11, 31) to the frame and door of the opening with a center distance H, the outer diameter d pins (14, 35) and the bearing (25, 47) having a hole diameter D and a width L ) And a ratio δ / L between the gap δ and the width L formed by fitting, the distance P between the bearings (25, 47) held by the connecting members (21, 51), and the center distance H between the upper and lower hinges (11, 31). A hidden hinge mounting method in which the inequality δ / L> P / H is established between the ratio P / H.