JP4303646B2 - Hinge device for folding door - Google Patents

Description

  The present invention relates to a pivot type hinge device for connecting folding doors.

  Recently, folding doors are frequently used for furniture doors such as closets, indoor doors that are folded by connecting two doors of different sizes, and partition panels that divide a large space into multiple doors. A hinge or a pivot hinge type connecting member is used for the connecting part of all these doors. Here, although the required requirements are slightly different depending on each of the above-mentioned applications, the most important items in common as a whole are as follows: a) a large gap between adjacent door body end faces No gap is generated and the light shielding and heat insulation properties are not impaired. B) The axial center position, which is the center of rotation of the connecting member, does not protrude greatly from the door surface, is excellent in design, and is folded in a closed state. There should be no significant design differences on both sides of the door, c) The door corners do not come into contact with each other due to the folding operation, and no large curved surface or chamfering is required on the door end surface, d) The doors should be compact so that they do not leave much apart when they are fully folded. E) A structure that prevents fingers from being pinched between the edges of the door when closing the folding door, or a procedure that does not cause injury even if it is pinched. , F That each household member surface in a state where the door is closed broken are held in alignment, and the like.

  As shown in FIG. 21 (a), in the structure connected by the normal hinge 22, the hinge 22 itself is attached to the door body surface 20, and the shaft center portion naturally protrudes from the door body surface 20, and a plurality of doors are also provided. In order to connect and fold the body 21, it is necessary to alternately arrange the hinges 22 at the front side position and the back side position of the door body 21, and there remains a problem in design. Further, in the completely folded state, as shown in FIG. 21 (c), the distance L between the door surfaces 20 becomes relatively large, and the compactness at the time of storage is not so good. Further, it is necessary to eliminate the problem of finger stuffing that causes a finger to be pinched between adjacent door body end faces 13 when the folding door is further closed as shown in FIG. Large chamfers and arcuate curved surfaces must be provided. Therefore, this hinge type is also used for folding doors such as closets that have folding doors with front and back, and the number of doors 21 to be connected is only two. The current situation is that it is not so often used for partitions that connect the doors 21.

  An improvement of this hinge type, as disclosed in JP-A-2002-322880, the hinge 22 itself is made continuous in the vertical direction to improve the design, and the adjacent door body There is a configuration in which the end face 13 is separated only by a fixed interval to conceal the gap with a gap closing member 18 such as a soft gasket, and at the same time, the problem of finger filling is eliminated. However, this type is still incomplete in terms of the fact that the axis protrudes from the door surface 20, the design of both sides of the folding door changes, and the compactness when folded.

  Further, in the above-described configuration further improved, Japanese Patent Laid-Open No. 10-331514, Japanese Patent Application Laid-Open No. 2004-84399, and the like are disclosed, and the thickness of the door body 21 is made by digging the adjacent door body end face 13. It is built in and covered with a resin cover over the entire vertical direction so that the appearance in the closed state is almost the same from both sides of the door body 21. However, it is troublesome to make a continuous digging in the vertical direction of the door body end face 13, and the connecting portion becomes a concave shape in order to prevent finger jamming, which is not good in terms of design. In addition, the number of parts is large, and it is considered that the cost will be high.

  Another mechanism is a pivot hinge type in which an axis is arranged at the center of the thickness of the door 21. In this pivot hinge type, when the door body end surface 13 of the adjacent door body 21 is face-to-face at a short distance, the door body end corners 14 come into contact with each other during rotation. Therefore, as shown in FIG. 22, the entire door body end face 13 is formed into an arcuate curved surface with the rotation axis as the center, or both door end face faces 13 are greatly separated as shown in FIG. There is a countermeasure for preventing the body corners 14 from barely contacting each other. The pivot hinge type of these central suspensions inevitably has its axis centered within the thickness of the door body 21, naturally the design of both sides of the folding door is the same, and is closed compared to the hinge 22. It is characterized in that it can be folded in both directions from the state.

  The method of making the door end surface 13 shown in FIG. 22 into a large arcuate curved surface has been frequently used in the past, and many improvements have been disclosed in JP-A-2002-242522. However, this configuration also requires time and effort to make the door body end face 13 curved, and the arc-shaped appearance is exposed as it is, so that the connecting portion becomes concave and the design is not very good.

Further, in the configuration shown in FIG. 23, a large gap is naturally generated when the folding door is closed, and it is considered that not only light shielding properties and soundproofing properties cannot be secured, but also the design is very bad. Therefore, as shown in FIG. 24 (a), means for attaching the soft gap closing member 18 to the gap is used. If the gap closing member 18 is directly attached to the configuration of FIG. 23, this time, as shown in FIG. 24 (b). Thus, the gap closing members 18 come into contact with each other beyond the elastic range when folded. Therefore, it is necessary to further increase the gap, and it is necessary to use a very wide gap closing member 18 as shown in FIG. Then, the distance between both door surfaces 20 in a completely folded state becomes very large, which is disadvantageous in terms of compactness, and the surface of the soft gap closing member 18 such as a gasket meanders when the width becomes too large. Therefore, the appearance is not good and elasticity tends to be difficult to obtain, and this method is not very effective.
JP-A-10-331514 JP2002-242522 JP2002-322880 JP 2004-84399 A

  The present invention has been made to solve the above-mentioned problems, and is based on the premise that the shaft center close to the pivot hinge type is arranged within the thickness of the door body and can be implemented simply and with a small number of parts. It can be folded from the closed state in both the front and back sides, and does not require large chamfering or arcuate processing on the door body end face, and there is no gap between adjacent door body end faces. To provide a hinge device for a folding door that can prevent interference at the corner of the door body even in a very narrow setting, and further has a reliable light shielding property and heat insulation property, and can cope with the problem of finger padding. With the goal.

  In the present invention, the following technical means are provided to solve the above problems. First, two plate-shaped door plates and a connecting plate are provided. The door plate is provided with a substantially V-shaped long hole, and a door-side shaft is attached to the center position of the substantially V-shaped long hole on the V-shaped open side. Further, the substantially V-shaped long hole passes through a linear inclined portion extending in two directions from the vertex of the V-shape and continues to the arc portion centered on the door-side axis, and passes through the door body surface passing through the vertex position of the V-shape. It is formed in a symmetrical shape with a parallel lateral center line as a boundary. Two straight long holes are arranged between the connecting plate side shafts at both ends of the connecting plate along the horizontal center line, and the vertical center line passing through the central position of the connecting plate is the boundary. It is formed in the symmetrical shape.

  Next, the two door plates are arranged in such a way that both substantially V-shaped elongated holes face each other, and the connecting plate and the door plate are overlapped so as to cover the connecting plate. At this time, insert the connecting plate side shaft into the substantially V-shaped long hole of the door plate and the door side shaft into the straight long hole of the connecting plate at the same time, and assemble them with a washer etc. A hinge device is configured. And this hinge apparatus is arrange | positioned in the up-and-down position of the door which adjoins the folding door which consists of a some door, and it mounts | distributes and attaches two door plates to the upper-lower-ends part surface of an adjacent door. As a result, the doors fixed to the door plate are connected via the connection plate.

  In the state where the folding door is completely closed, the connecting plate side shaft is arranged at the position of the V-shaped apex of the substantially V-shaped long hole, and the door body side shaft is arranged on the most longitudinal center line side in the straight long hole. Has been. When the folding door is opened while folding the door, the inclined portion of the substantially V-shaped long hole moves while being regulated along the connecting plate side axis, and at the same time, the door side axis also moves within the straight long hole, The door end corner rotates while the part surface is away from the longitudinal center line. Therefore, even if there is no gap between adjacent door body end faces and there is no large arc-shaped chamfering or the like on the door body end faces, a trajectory that allows both door body end corners to rotate without interference is obtained. It will be. After that, from the stage when the door side axis contacts the opposite end of the straight long hole, the arc part continuously rotates around the door side axis along the connecting plate side axis. Can be folded into

  As the operation of folding the door, only one of the inclined part and the arc part on the side of the center line in the horizontal direction of the substantially V-shaped elongated hole is guided and moved by the frame side shaft. Therefore, when pulled to the near side from the closed state, it is guided by the inclined part and arc part on the back side of the approximately V-shaped long hole with the horizontal center line as the boundary, and when pushed to the back side, the horizontal center line is the boundary. The operation is guided by the inclined portion and the arc portion on the near side of the substantially V-shaped long hole, and as a result, the door can be folded in both directions. If the door plate is set so as to be able to rotate by 90 degrees slightly in one direction with respect to the connecting plate, the folding door can be folded up to a completely overlapped state.

  In addition, the shape of the approximately V-shaped long holes of the two door plates assembled to the connecting plate is formed in a substantially square shape on only one side with the horizontal center line as a boundary, thereby folding the connected doors. A configuration in which the direction is limited to only one side is also possible. In this configuration, it is necessary to change the direction of folding in the alternating direction to the connecting parts of the doors arranged side by side, but this hinge device needs to be mounted, but compared to a configuration with a substantially V-shaped elongated hole that can be folded in both directions Since the width direction of the hinge device itself can be reduced, it is possible to correspond to a door having a smaller thickness.

  Also, because the corners of the door ends adjacent to each other are turned away from each other at the time of folding, it is set with a certain distance between the adjacent door end surfaces when the folding door is closed. When the soft gap closing member is attached to the portion, the gap closing members do not come into strong contact with each other during folding, and therefore, it is possible to prevent injuries or the like due to finger jamming. Moreover, if the soft gap closing member is disposed at both ends of the door body end face in the thickness direction, the design on both sides of the folding door becomes exactly the same, and the design is not impaired. In addition, if the gap closing member is provided with an arbitrary elastic force, and the degree of movement of the door end corner away from the connecting position during folding is set small, the elasticity of the door closing member is caused by the elasticity of the gap closing member. It is also possible to forcibly hold the door surfaces in a closed state in a state of being aligned.

  In addition, in order to prevent the door plate surface and the connecting plate surface from coming into direct contact with each other, and to prevent wear and noise of the contact characters between the two long holes and the two shafts, the straight long holes have brim-resistant parts. A bush made of a material with excellent wear is mounted, and a ring made of the same material is mounted on the connecting plate side shaft. Then, the door plate can be moved smoothly with respect to the connecting plate when the door is folded. Further, the ring contacts the inner surface of the substantially V-shaped elongated hole and rotates with respect to the connecting plate side shaft. The movement of the inside of the elongated hole can be prevented, and wear between the connecting plate side shaft having the longest contact distance and the inner side of the substantially V-shaped elongated hole can be prevented.

  Because the door side axis and the connecting plate side axis move simultaneously within the approximately V-shaped elongated hole and the linear elongated hole, when the door is folded, the inclined part on one side of the approximately V-shaped elongated hole follows the connecting plate side axis. Therefore, the door body side shaft can move in the straight long hole at the same time. This operation becomes a unique trajectory in which the door plate moves away from the longitudinal center line with respect to the connecting plate, and as a result, the adjacent door end corners also rotate while escaping each other. Therefore, the door corners are not chamfered or arc-shaped, and the folding doors can be folded without interfering with the door corners, even if there are almost no gaps between the door edges. It becomes possible.

  When the door is pulled forward and folded, it is guided by the inclined part and arc part on the back side of the approximately V-shaped long hole with the horizontal center line as the boundary, and when it is pushed and folded back, the horizontal center line It is guided by the inclined part and arc part on the near side of the approximately V-shaped long hole, and the door can be folded in either direction from the closed state in which the doors are aligned. . Therefore, even when the doors are continuously connected, the same hinge device can be used for both the connecting portion that is folded in a concave shape and the connecting portion that is folded in a convex shape, and it is not necessary to pay attention to the folding direction.

  The shape of the approximately V-shaped long hole of the door plate is formed in a generally square shape on only one side of the approximately V-shaped long hole with the horizontal center line as the boundary, and the folding direction of the connected door body is set to one side In the configuration limited only to this, it is necessary to change the direction of folding in the alternate direction to the connecting parts of the doors arranged side by side, but it is more hinged than the configuration of a substantially V-shaped long hole that can be folded in both directions Since the width direction of the device itself can be reduced, it becomes easy to correspond to a door having a small thickness.

  If the configuration is set so that the adjacent door body end surfaces with the folding door closed are separated from each other by a certain distance and a soft gap closing member is attached to the gap, the light shielding and heat insulation properties are maintained. In addition, the gap closing members do not come into strong contact with each other at the time of folding, and it is possible to prevent injury even if the fingers are packed.

  Moreover, if the soft gap closing member is arranged at both ends in the thickness direction of the door body end face, the design from both sides of the folding door can be made exactly the same, and there is no unevenness in the connecting part of the door body Configuration is possible. Arbitrary elastic force is provided on the gap closing member, and the degree to which the door end corner moves away from the connecting position during folding is reduced, and the gap closing member is slightly pressed in the initial stage of folding. If it is set to be folded after overcoming the closed state, it is possible to forcibly hold the door surfaces in a state of being aligned in a straight line when the door is closed due to the elasticity of the gap closing member.

  It is a simple configuration of only a connecting plate having a connecting plate side shaft and a door plate having a door side shaft, and can be manufactured inexpensively with a very small number of parts. Further, by inserting a resin bush having good wear resistance between the connecting plate and the door plate, rattling and operation noise during folding can be reduced. Furthermore, by covering the connecting plate side shaft in a rotatable state, the resin ring looks like a roller with respect to the connecting plate side shaft when moving while the inner side of the inclined portion contacts the connecting plate side shaft. Therefore, it is possible to significantly reduce wear and rubbing noise at the contact portion.

  Embodiments of a hinge device for a folding door according to the present invention will be described below with reference to the drawings. 1 to 13 show a first embodiment of the present invention, and FIG. 1 is a perspective view of a folded state in which the hinge device for a folding door of the present invention is attached to the folding door. In the first embodiment, as shown in FIG. 1, the thickness of the door body 21 and the width of the door body plate 2 are set to be the same, and the upper and lower ends of the door body 21 are dug by the thickness of the door body plate 2. 2 is attached to the door body 21 with a mounting screw 15. Therefore, both sides of the folding door have exactly the same design, but the side surfaces of the door body plate 2 are exposed at the upper and lower ends of the connecting portion of the door body 21 so as to be flush with the door body surface 20.

  FIG. 2 is a top view of the connecting plate 1, and FIG. 3 is a top view of the door plate 2. The connecting plate 1 has a plate shape as shown in FIG. 2, and is provided with two horizontal straight elongated holes 5 at two positions, and two connecting plate side shafts 3 at both side positions. Further, the door plate 2 has a rectangular plate shape as shown in FIG. 3 and is provided with a substantially V-shaped long hole 6 and a door side shaft 4, and the door side shaft 4 is mounted at the center position on the open side of the V shape. Keep it. The shape of the substantially V-shaped long hole 6 is formed in a shape that continues to a circular arc portion 9 centering on the door body side shaft 4 through a linear inclined portion 8 extending in two directions from the V-shaped apex 7. Then, attachment holes 12 are provided at the four corners of the door plate 2.

  Next, as shown in FIG. 4, the two door plates 2 are arranged in such a manner that the substantially V-shaped long hole 6 is open so as to face each other and have a very small gap, on which the connecting plate 1 is placed. In such a state that the two door side shafts 4 are inserted into the two straight elongated holes 5 and the two connecting plate side shafts 3 are inserted into the two substantially V-shaped elongated holes 6 so as to overlap each other. The hinge device is configured by assembling with, for example. At this time, it is set so that each axis can move in each slot without rattling in the vertical direction. In FIG. 1, only the upper part of the folding door is shown, but a similar hinge device is also arranged at the lower position, and one hinge device is attached to each of the upper and lower ends to connect the door body 21.

  At this time, as shown in FIG. 1, when a line parallel to the door body surface 20 passing through the center position of the door body 21 is a lateral center line 10, the V-shaped apex of the substantially V-shaped long hole 6 of the door body plate 2. 7 and the door side shaft 4 are arranged on the horizontal center line 10, and the substantially V-shaped long hole 6 is symmetrical with respect to the horizontal center line 10. Further, the straight long hole 5 and the connecting plate side shaft 3 of the connecting plate 1 are also arranged on the lateral center line 10. And if the line parallel to the door end surface 13 and passing through the intermediate position of the two door plates 2 is the vertical center line 11, the connecting plate 1 is also symmetric with respect to the vertical center line 11. Therefore, the hinge device as a whole is also symmetric with respect to the longitudinal center line 11. Here, the door body end corner 14 may be a small chamfer with no sharpness, and both door body end surfaces 13 are similar to the state in which the sides of the vertical center line 11 of both door body plates 2 face each other. It is set to have only a very small gap.

  Next, the operation when the folding door is folded from the closed state will be described. Here, the locus when only one door plate 2 is folded to the near side from the state of FIG. 1 will be described with reference to FIG. The door body plate 2 moves together with the door body 21, but for ease of explanation of the operation, the door body 21 is omitted in FIG. 5 and only one door body plate 2 is moved. Only the operation of the door plate 2 with respect to the connecting plate 1 is displayed.

  In the state of FIG. 5A in which the folding door is closed, the connecting plate side shaft 3 is substantially at the position of the V-shaped apex 7 of the V-shaped long hole 6, and the door body side shaft 4 is the most of the straight long hole 5 of the connecting plate 1. It is arranged near the vertical center line 11. When the door body 21 is rotated to the near side from the state of FIG. 5A, the door body plate 2 tries to rotate with respect to the door body side shaft 4, but at the same time, the connecting plate side shaft 3 is substantially omitted. Since it is inserted into the V-shaped long hole 6, it moves while being regulated along the inclined portion 8 of the substantially V-shaped long hole 6. Then, as shown in FIGS. 5B to 5C, the door body side shaft 4 simultaneously moves in the straight long hole 5, and the door body plate 2 itself is folded while being rotated away from the longitudinal center line 11. It becomes operation.

  5B to 5C, since the inclined portion 8 is guided along the connecting plate side shaft 3, the door body is moved by the distance that the door side shaft 4 has moved in the straight long hole 5. Since the plate 2 is also away from the vertical center line 11 and this operation is performed simultaneously with the rotation of the door body plate 2, the locus of the door body end corner 14 moving substantially along the vertical center line 11 is obtained. can get. Further, in the middle stage of folding in FIGS. 5 (c) to 5 (e), the connecting plate side shaft 3 and the inclined portion 8 continue to be guided and moved, so that the door plate 2 is increasingly in the vertical direction. The door end corner 14 moves along the longitudinal center line 11 without coming into contact with the other door plate 2 while rotating away from the center line 11.

  Then, at the stage of FIG. 5 (e), the door end corner 14 exceeds the horizontal center line 10, and thereafter the door end corner 14 becomes a locus away from the vertical center line 11 even by a simple rotation. Therefore, it is not necessary to move the door plate 2 further in the direction away from the longitudinal center line 11. Therefore, after FIG. 5 (e), it is preferable to set the door plate 2 so as to rotate along the circular arc portion 9 that is a circular track centered on the door-side axis 4. The rotation possible angle after FIG. 5 (e) is determined by the opening angle of the arc portion 9 with the door side axis 4 as the center, and in FIG. 5, it further rotates beyond the 90 degree position of FIG. 5 (f). It is set. Also, in the actual housing shown in FIG. 1, the side on the vertical center line 11 side of one door plate 2 coincides with the door end surface 13, and the vertical center line of the other door plate 2 Since the side on the 11th side also coincides with the other door body end surface 13, the space between the door body end surfaces 13 of the adjacent door bodies 21 is a very small gap, and the chamfering or circle of the door body end corner 14 is provided. Even in a state where there is almost no arcuate curved surface processing, it is possible to avoid the contact between the door end corners 14 during the folding operation.

  With respect to the degree to which the door plate 2 is moved in the direction away from the longitudinal center line 11 by the rotation of the door body 21, the inclination of the inclined portion 8 in the closed state in FIG. The angle is important, and the smaller the inclination angle, the larger the door body plate 2 can be moved at a smaller rotation angle of the door body 21 while moving away from the longitudinal center line 11. More specifically, in FIG. 5, the angle of the inclined portion 8 with respect to the horizontal center line 10 is set to about 35 degrees. For example, the opening angle of the inclined portion 8 from the V-shaped apex 7 is as large as about 60 degrees. Comparing with the case of having an angle, if the opening angle of the door body is the same as that of FIG. 5C, the position of the door body side shaft 4 within the straight elongated hole 5 is larger when the opening angle is larger. ) Is closer to the vertical center line 11, and therefore the degree of movement of the door in the direction away from the vertical center line 11 is small. Here, in order to prevent the door end corner 14 from coming into contact with the other door plate 2 during folding, it is necessary not to exceed the longitudinal center line 11, and the thickness of the door plate 2 and the door 21. Accordingly, the angle of the inclined portion 8 is changed, and the degree to which the door end corner 14 is separated from the longitudinal center line 11 is arbitrarily set. Further, the shape of the substantially V-shaped long hole 6 is not necessarily limited to the shape in which the inclined portion 8 and the arc portion 9 are connected, and a similar locus is possible even when the inclined portion 8 is curved. A unique trajectory is obtained by the continuous shape of the inclined portion 8 and the arc portion 9.

  6 (a) to 6 (d) show the trajectory when the door 21 is rotated to the back side (the direction opposite to FIG. 5) from the state in which the folding door is closed. Since the elongated hole 6 has a completely symmetrical shape with respect to the lateral center line 10, the operation of the door plate 2 is only opposite to that in FIG. 5. That is, when the door body 21 is rotated to the near side, it is guided by the inclined portion 8 and the arc portion 9 on the back side of the substantially V-shaped elongated hole 6 with the horizontal center line 10 as a boundary, and when rotated to the back side, The operation is guided by the inclined portion 8 and the arc portion 9 on the near side of the substantially V-shaped long hole 6 with the direction center line 10 as a boundary, and as a result, the door body 21 can be folded in both directions. The operation of the door side shaft 4 is the same operation that moves along the lateral center line 10 in the straight long hole 5 of the connecting plate 1 regardless of which direction the door 21 is rotated. Don't give. Therefore, the folding operation of the folding door can be performed by pushing or pulling from both inside and outside the room.

  FIGS. 7A to 7D sequentially show the trajectory including the door body 21 in the operation of pushing and pulling the connecting portion of the door body 21, and the state of the state of FIG. 7B during this operation is shown. A perspective view is shown in FIG. Here, the two door plates 2 and the door body 21 connected thereto can operate independently with respect to the connecting plate 1, but the operation of pushing and pulling the vicinity of the connecting portion of the door body 21 is as shown in FIG. The door 21 adjacent to the door 21 is folded at substantially the same angle. Further, one door plate 2 can rotate 90 degrees with respect to the connecting plate 1, and when both doors 21 are simultaneously moved in the same direction (front side or back side) with respect to the connecting plate 1, FIG. As shown to (d), it becomes possible to fold until both door surface 20 becomes completely parallel. FIG. 9 is a trajectory diagram showing a state in which a plurality of door bodies 21 are connected and folded by the hinge device, and all the hinge devices are the same, and from the closed state of FIG. 9 (a). It can be folded regardless of the position of the folding door. Moreover, as shown in FIG.9 (c), in the state folded completely, the clearance gap between the door body surfaces 20 is comparatively small, and it can fold in a compact state.

  Further, as described above, by arbitrarily setting the inclination angle of the inclined portion 8 with respect to the horizontal center line 10, the degree of movement of the door plate 2 away from the vertical center line 11 during rotation can be adjusted. However, if it is set extremely, the opening angle of the inclined portion 8 will be very small. 5 (c) and 6 (b), when the folding door is folded and opened, the outer side of the inclined portion 8 is the opening side, and when the folding door is closed, the inner side of the inclined portion 8 is the connecting plate side shaft 3. The side surface is strongly pressed, and a large frictional force is generated, which affects the smoothness of the opening / closing operation. This phenomenon becomes more prominent as the opening angle between the inclined portion 8 and the lateral center line 10 is smaller. Therefore, in order to obtain a smooth opening / closing operation of the door body 21, a certain degree of opening angle of the inclined portion 8 is required. It is necessary to pay attention to the balance with the operation of moving the body plate 2 away from the longitudinal center line 11. Further, even at the opening angle of the inclined portion 8 of about 35 degrees shown in FIG. 5 and FIG. 6, the inner and outer sides of the inclined portion 8 and the connecting plate side shaft 3 move while rubbing during the opening / closing operation. It is indispensable to cope with wear and rubbing noise of parts.

  The above-mentioned measures can be taken by a number of means, but the configuration in which both the long holes and both shafts are covered with a resin material having good wear resistance is simple. As an example, as shown in FIG. A resin bushing 16 having a flange portion that simultaneously protects the inner side of the hole 5 and the contact surface between the connecting plate 1 and the door plate 2 is mounted in a state where the resin bush 16 is fitted into the straight long hole 5. A resin ring 17 covering the side peripheral surface may be attached. FIG. 11 is a side sectional view showing an example of a state in which the resin bush 16 and the resin ring 17 for improving the wear resistance are combined. At this time, as shown in FIG. 11, the resin ring 17 is configured to be separated from the resin bush 16 so that the resin bush 17 can freely rotate with respect to the connecting plate side shaft 3 while maintaining a state in which the resin bush 17 is not detached vertically. It is good to leave. Then, the resin ring 17 rotates when the connecting plate side shaft 3 and the inner side of the inclined portion 8 are rubbed at the stage of FIGS. 5B to 5E and FIGS. 6B to 6C. Thus, since it plays the role of a roller, both wear and rubbing noise can be greatly reduced, and operability during opening and closing can be greatly improved. FIG. 12 is a top view showing a state in which the folding door is closed, in which the door plate 2 is assembled after the resin bush 16 and the resin ring 17 are fitted to the connecting plate 1 in the first embodiment.

  However, in the configuration described above, as shown in FIG. 7, in the operation of closing the folding door, the adjacent door body end surface 13 becomes an operation of narrowing, and the danger to finger padding has not been eliminated. Further, even if the gap between the connected door end surfaces 13 is very small, there is a concern that light leaks from the narrow gap. Therefore, as shown in FIG. 13, the two door plates 2 to be assembled to the connecting plate 1 are set apart from each other by a predetermined distance in advance, and the door end surface 13 of the door 21 is set to the longitudinal center of the door plate 2. Align and attach the side closer to the line 11. And it is good to equip the soft gap closing member 18 which followed the up-down direction at the both ends of the thickness direction of each door body end surface 13 in the up-down direction. And if it sets so that the front-end | tips of the gap closing member 18 which face each other in the state where the folding door is closed may be in close contact with each other, it becomes possible to improve the light shielding property and the heat insulating property.

  Further, if the gap closing member 18 is made of a very soft inside like a hollow gasket and the thickness of the gap closing member 18 is set to be somewhat larger than the thickness of the finger, the folding door is closed. Even if a finger is sandwiched between them, the gap closing member 18 is only pushed and deformed, and safety can be improved without causing injury. Further, even when the gap closing member 18 is mounted on the door body end face 13, the outer corner portion of the gap closing member 18 moves along the vertical center line 11 in the folding operation of the folding door. Therefore, the folding operation is not affected at all, and the design of the door body surfaces 20 of the folding door is exactly the same, and the gap closing member 18 having a relatively narrow width in the vertical direction is flush with the door body surface 20. The design is not impaired just by being arranged.

  However, in the first embodiment, the side of the door plate 2 is flush with the door surface 20 but exposed to the surface, and the side of the door plate 2 is also inside the door 21. The concealment configuration is considered better in terms of design. Then, the structure which has arrange | positioned so that the door body plate 2 may be hidden inside the door body 21 is demonstrated to FIGS. 14-18 as 2nd embodiment. FIG. 14 is a top view showing a state in which only the door plate 2 is attached to the door body 21, but when the door body plate 2 is arranged inside the thickness portion of the door body 21, both surface portions of the door body 21. It is necessary to leave a certain amount of thickness, and if the remaining portion is too thin, there is a concern that cracks may occur from the surface of the door body. Therefore, in the configuration of the second embodiment, the thickness of the door body 21 inevitably increases. Become a trend.

  Then, in the setting using the same hinge device as in the first embodiment, the door body corner 14 is rotated beyond the vertical center line 11 as shown in FIG. Therefore, the door body end corners 14 are not in contact and folded as they are. Therefore, as described above, means for adjusting the opening angle of the inclined portion 8 of the substantially V-shaped long hole 6 with respect to the lateral center line 10 can be considered. However, this means is suitable for fine adjustment, but it is not preferable to make a large adjustment to some extent as shown in FIG. 15 because it affects the smoothness of the operation.

  Therefore, as shown in FIG. 16, the above-described means using the gap closing member 18 may be adapted to the second embodiment. Here, in the configuration shown in FIG. 13 in the first embodiment, the gap closing member 18 is not compressed at all during the folding operation, and the gap closing members 18 of the adjacent door bodies 21 are not in contact with each other in order to ensure light shielding properties. Barely close. However, it is assumed that there is no particular problem even if the soft gap closing member 18 is compressed to some extent within the range that retains elasticity during folding, and it is sufficient that the folding operation does not become extremely heavy and does not hinder the opening and closing operation. Is done. In addition, the dimension in which the door end corner 14 in the second embodiment shown in FIG. 15 exceeds the longitudinal center line 11 is about the thickness left as the door surface in FIG. 14 and is relatively small. Therefore, it is preferable that the distance moved beyond the longitudinal center line 11 due to the increase in the thickness of the door body 21 be dealt with by the amount of compression of the gap closing member 18 to a reasonable degree.

  FIG. 17 is a trajectory diagram showing a state in which the gap closing member 18 is folded while being compressed to some extent in the configuration of the second embodiment. FIG. 17A shows a closed state, and the gap closing member 18 on the approaching side is compressed as it is folded with FIGS. 17B to 17C, but it is compressed so that it is completely crushed from the front. This is not an operation to perform, but a compression operation that pushes out while rotating, so that a large load is not generated during folding. 17C, the compressed gap closing member 18 has a locus to leave, so that the door body 21 is considerably folded, which requires a relatively strong opening / closing operation force for the entire operation of folding the folding door. There will be almost no load on the operation under the condition.

  In addition, if the gap closing member 18 is already compressed with a certain amount of force in the closed state of FIG. 17A, the gap closing member 18 is disposed at both ends of the door body end face 13. Therefore, a force to align adjacent door bodies 21 in a straight line is applied due to elasticity. FIG. 18 shows a state in which it is almost folded from the closed state. However, the gap closing member 18 on the near side is further strongly compressed, and a force is applied to the gap closing member 18 on the back side. Since it will be in the state which is not applied, naturally if this is left as it is, the gap closing members 18 on the near side will repel each other, and the door body 21 will return to a straight closed state. Therefore, the configuration of the second embodiment can also forcibly hold the door body surfaces 20 in a state of being aligned in a closed state when the door body 21 is closed due to the elasticity of the gap closing member 18, which is also very effective in this respect. It is thought that.

  However, since the second embodiment requires a larger thickness of the door 21 than the first embodiment, there is room for improvement in that it is difficult to adapt to a thin folding door. A possible configuration is desired. Here, as described above, as the operation of folding the folding door, only one side of the door body plate 2 with respect to the lateral center line 10 of the substantially V-shaped long hole 6 is used. Also, as shown in FIG. 9, the folding direction of the adjacent hinge device is inevitably determined at the stage where one hinge device is folded, and these directions are alternated. Therefore, instead of the substantially V-shaped elongated hole 6, an approximately elongated character-shaped hole 19 having a half shape with the horizontal center line 10 as a boundary is provided in the door body plate 2, and the folding operation is performed in both directions from the closed state. 19 and FIG. 20 will be described as a third embodiment in which the above configuration is intentionally excluded and limited to be folded only in one direction.

  FIG. 19 (a) is a top plan view of the third embodiment with the folding door closed, and the size of the door body plate 2 in the width direction is about 2 as compared with the first embodiment and the second embodiment. In the direction of the elongated hole 19 to the abbreviated shape of FIG. 19, it can be folded only to the near side as shown in FIG. 19 (b). Further, when the entire hinge device is rotated 180 degrees from the state of FIG. 19A and attached to the adjacent door body 21, the folding direction can be set to the back side. FIG. 20 shows a state in which a plurality of doors 21 are connected in the third embodiment, and since the folding direction is limited to the hinge device itself, the folding direction of the reference position is determined, and then At the connecting position, the hinge device should be mounted in the opposite direction, and the hinge device should be attached in an alternating direction as shown in FIG. 20 (a), and the entire folding door as shown in FIGS. 20 (b) to 20 (c). It can be folded.

  In addition, as shown in FIG. 19 (a), in the third embodiment, the outer corner positions of the door body end corner 14 and the gap closing member 18 are very close to the lateral center line 10, and therefore both doors are folded when folded. Since the distance that the body end corner 14 approaches becomes small, the degree of separating the door plate 2 from the longitudinal center line 11 may be small. Accordingly, in FIG. 19, the opening angle of the inclined portion 8 of the substantially elongated hole 19 is set to about 50 degrees, but it is possible to sufficiently avoid the contact between the door end corners 14. Therefore, the third embodiment is very advantageous in terms of conditions in that both door end corners 14 at the time of folding contact each other as compared with the first embodiment and the second embodiment. In the third embodiment as well, a configuration in which the gap closing member 18 is similarly used to improve finger padding and light shielding is excellent.

  Further, in the case of a hanging type folding door, as shown in FIG. 16, a door wheel is mounted at the central position of the connecting plate 1 of the hinge device mounted at the upper position of the door body 21 so as to be movable with respect to the upper rail. It is good to keep. In this case, the lower hinge device is left as it is, or if there is a rail for steadying at the lower portion, a guide shaft or the like may be attached to the connecting plate 1 of the lower hinge device. Moreover, you may use the hinge apparatus of this invention not only for a suspension type folding door but for the folding door of what kind of structure.

It is the accommodation perspective view of 1st embodiment of the hinge apparatus for folding doors of this invention. It is a top view of the connection plate of 1st embodiment of the hinge apparatus for folding doors of this invention. It is a top view of the door plate of 1st embodiment of the hinge apparatus for folding doors of this invention. It is a disassembled perspective view of 1st embodiment of the hinge apparatus for folding doors of this invention. It is a locus | trajectory figure of the state which rotated the door body plate in 1st embodiment to the near side of the hinge apparatus for folding doors of this invention. It is a locus | trajectory figure of the state which rotated the door body plate in 1st embodiment to the back | inner side of the hinge apparatus for folding doors of this invention. It is a locus | trajectory figure of the state which folded the folding door in 1st embodiment of the hinge apparatus for folding doors of this invention. It is a perspective view which shows the state of FIG.7 (d) of the hinge apparatus for folding doors of this invention. It is a locus | trajectory figure which shows the state which connected and folded the some folding door in 1st embodiment of the hinge apparatus for folding doors of this invention. It is a disassembled perspective view of the state which incorporated the resin ring and resin bush in 1st embodiment of the hinge apparatus for folding doors of this invention. It is side surface sectional drawing of the resin bush and the resin ring of the hinge apparatus for folding doors of this invention. It is the accommodation top view of the state which incorporated the resin ring and resin bush in 1st embodiment of the hinge apparatus for folding doors of this invention. It is the accommodation top view of the state which mounted | wore the gap closing member in 1st embodiment of the hinge apparatus for folding doors of this invention. It is a top view which shows the attachment state of the door body plate of 2nd embodiment of the hinge apparatus for folding doors of this invention. It is a top view which shows the locus | trajectory of a door body edge part corner when it is set as the arrangement | positioning of the door body plate of 2nd embodiment by the same accommodation as 1st embodiment of the hinge apparatus for folding doors of this invention. It is the accommodation perspective view of 2nd embodiment of the hinge apparatus for folding doors of this invention. It is a locus | trajectory figure of the state which folded the folding door in 2nd embodiment of the hinge apparatus for folding doors of this invention. It is a top view which shows the state folded only slightly in 2nd embodiment of the hinge apparatus for folding doors of this invention. It is a locus | trajectory figure of the state which folded the folding door in 3rd embodiment of the hinge apparatus for folding doors of this invention. It is a locus | trajectory figure which shows the state which connected and folded the some door body in 3rd embodiment of the hinge apparatus for folding doors of this invention. It is a top view of the state which connected the folding door with the conventional hinge. It is a top view of the state which connected the door body which made the door body edge part surface the circular arc shape in the conventional hinge apparatus of center suspension. It is a top view of the state which separated and connected the adjacent door body edge part surface in the conventional hinge apparatus of center suspension. It is a top view of the state which connected the door end part surface which adjoined in the conventional center suspension hinge apparatus, and equipped with the clearance gap closing member in the clearance gap.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection plate 2 Door body plate 3 Connection plate side axis | shaft 4 Door body side axis | shaft 5 Straight long hole 6 Substantially V-shaped long hole 7 V-shaped vertex 8 Inclined part 9 Arc part 10 Lateral center line 11 Vertical center line 12 Mounting hole 13 Door end surface 14 Door end corner 15 Mounting screw 16 Resin bushing 17 Resin ring 18 Gap closing member 19 A generally long hole 20 Door surface 21 Door 22 Hinge

Claims (8)

  A hinge device for a pivot type folding door that is foldable from a state in which a plurality of doors are connected, and includes a connecting plate and two door plates, and the connecting plate includes two straight elongated holes. Two connecting plate side shafts are provided, the door plate is provided with a substantially V-shaped long hole and the door side shaft, two door plates are arranged, and the connecting plate is stacked, and the connecting plate side shaft is used as the door plate. Assemble the door side shaft into the straight long hole of the connecting plate at the same time in the approximately V-shaped long hole, and distribute and attach the two door body plates to the upper and lower end surfaces of the doors adjacent to the folding door. The hinge apparatus for folding doors characterized by having performed.   The door side shaft is attached to the center of the door plate where the V-shape is open, and the substantially V-shaped long hole is formed in an arc portion centered on the door side axis through an inclined portion extending in two directions from the top of the V-shape. Two door plates that are symmetrical with respect to the horizontal center line parallel to the door surface passing through the V-shaped apex, and facing the open side of the V-shaped long hole. Are arranged side by side, two connecting plate side shafts are arranged at both ends of the connecting plate, two straight long holes are arranged along the center line in the horizontal direction, and two connecting plates are arranged side by side. The door side shaft is inserted into the straight long hole of the connecting plate, the connecting plate side shaft is inserted into the approximately V-shaped long hole of the door plate, and the connecting plate side shaft is approximately V-shaped by folding the door. The inside of the hole is configured so that the door side axis moves simultaneously in the straight long hole. Door hinge device for folding according to Motomeko 1.   In the state where the folding door is completely closed, the connecting plate side shaft is arranged at the V-shaped apex position of the approximately V-shaped long hole, and the door body side shaft is arranged at the end near the center of the connecting plate in the straight long hole. When the door is folded, the inclined portion of the approximately V-shaped long hole moves while being regulated along the connecting plate side axis, and at the same time, the door side axis also moves within the straight long hole, and the door plate is moved to the door body. From the stage where the door body side axis is in contact with the opposite end of the straight elongated hole, the arc part is the door side axis along the connecting plate side axis. The hinge device for a folding door according to claim 1, wherein an operation of rotating around the center is obtained.   When the door is pulled and folded to the front, it is guided by the inclined part and arc part on the back side of the approximately V-shaped long hole with the horizontal center line parallel to the door surface as the boundary, and it is pushed and folded to the back side. Is guided to the front side of the approximately V-shaped long hole and the circular arc part with the horizontal center line as the boundary, and it is possible to fold the door in both the front side and the back side from the closed state The hinge device for a folding door according to any one of claims 1 to 3, wherein the hinge device is a folding door.   The shape of the approximately V-shaped long hole of the door plate is changed to a substantially square shape on only one side with a horizontal center line parallel to the door surface as a boundary, and the direction of folding of the connected doors The folding door according to any one of claims 1 to 3, wherein the folding door is limited to only one of the rear side and the near side, and is arranged in order in an alternating direction at a connecting position of a plurality of door bodies. Hinge device.   6. Any one of claims 1 to 5, characterized in that the door end surfaces adjacent to each other with the folding door closed are set apart from each other by a certain distance, and a soft gap closing member long in the vertical direction is attached to the gap portion. The hinge apparatus for folding doors of Claim 1.   The soft gap closing member is disposed at both end portions in the thickness direction of the door body end surface, and further, an arbitrary elastic force is provided to the gap closing member, and the door edge corner is separated from the connecting portion side during folding. The degree of movement is reduced, and it is set so that it becomes a trajectory that collapses beyond the state where the gap closing member is once pressed within the range with elasticity, and when the door is closed, the door body surface is made by the elasticity of the gap closing member. The hinge device for a folding door according to any one of claims 1 to 6, wherein the hinge device can be held in a line. A bushing made of highly wear-resistant material with a flange in the straight elongated hole is attached to prevent direct contact between the connecting plate surface and the door plate surface, and the connecting plate side shaft is made of the same material. When the ring is mounted and the door is folded, the ring touches the inner side of the approximately V-shaped elongated hole and moves in the approximately V-shaped elongated hole while rotating with respect to the connecting plate side shaft. The hinge device for a folding door according to any one of claims 1 to 7, wherein the hinge device is a folding door.

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