Hinges and door mechanisms

Abstract

To provide a hinge and a door mechanism which can facilitate adjustment during construction and improve operability during opening and closing by installing the hinge and the door mechanism on a large and heavy door which requires airtightness but is difficult to adjust. [Solution] The hinge 1 of the present invention comprises a fulcrum shaft 3 extending vertically, an adjustment shaft 12, a door frame side fixed portion 5, a door side fixed portion 13, and a link portion 27, and the door side fixed portion 13 has a first door side abutment portion 18 and a second door side abutment portion 25, which form abutment surfaces 18a, 25a, formed adjacent to each other in the front and back direction in a horizontal direction from the left and right sides of the adjustment shaft 12 toward the hanging point side parallel to the door 41 in a plan view, and the link portion 27 is characterized by having formed therein a first link abutment portion 30 which faces the first door side abutment portion 18 and abuts against the first door side abutment portion 18 when the door 41 is opened or closed, and a second link abutment portion 33 which faces the second door side abutment portion 25 and abuts against the second door side abutment portion 25 when the door 41 is opened or closed.

Description

[Technical Field]

[0001] The present invention relates to a hinge and door mechanism that can be installed on large, heavy doors that require airtightness but are difficult to adjust, making adjustment easier during installation and improving operability when opening and closing. [Background technology]

[0002] Traditionally, during disasters such as flooding caused by heavy rain, high tides, and tsunamis, water seeps into buildings when entrances and passageways, which are openings inside and outside buildings, become flooded, making it impossible to live or carry out activities in residential spaces and public facilities, and causing great damage to displayed goods and inventory in stores and warehouses.

[0003] Furthermore, in recent years, climate change has led to a tendency for short-term heavy rains to occur frequently in all regions. In particular, flooding of important facilities such as subways, which are part of the transportation infrastructure, power plants, which are the core of the infrastructure, and electrical and machine rooms, which are installed at their relay points and house the electrical equipment and machinery that control the supply of electricity, directly leads to a cutoff of the electricity supply, which not only has a major impact on daily life but also poses a major obstacle to subsequent restoration work, making disaster prevention measures against flooding an urgent issue.

[0004] In many cases, large doors are required for electrical rooms, machine rooms, subway passageways, etc., and in consideration of sealing properties such as watertightness, biaxial hinges are being used to ensure that the doors are biased against the door frame with as uniform pressure as possible.

[0005] However, because large doors are very heavy, it is not easy to manually close doors that use two-axis hinges with unstable ranges of motion so that the pressure on the door frame is even. Furthermore, even if multiple two-axis hinges are arranged on the hanging side, each hinge is connected independently to the housing and door, so the rigidity to support the door cannot be ensured sufficiently, and the door tip becomes more likely to drop relative to the hanging side.

[0006] Furthermore, when installing such a large door in a building, it is extremely difficult to align the axes of the multiple hinges so that the door opens and closes smoothly without any strain, and the complexity of the installation process cannot be ignored.

[0007] In this situation, the hinge disclosed in Patent Document 1, for which the applicant has already received a patent, comprises one long fulcrum axis that extends vertically to approximate the height of the door, one long adjustment axis that is approximately the same length as the fulcrum axis and is arranged adjacent to and parallel to the fulcrum axis, a main body fixing part that comprises a housing side fixing part that pivotally fixes the fulcrum axis and is fixed to the housing side, a door side fixing part that pivotally fixes the adjustment axis and is fixed to the door side, and a link part that passes through the fulcrum axis and the adjustment axis and connects the housing side fixing part and the door side fixing part, and an adjustment main body fixing part that is equipped with a link adjustment part that adjustably fixes the link part to the door side fixing part at any angle, and the link adjustment part consists of adjustment members that are arranged on the left and right sides of the adjustment axis so that they can freely advance and retreat in the door direction, and the hinge is configured to have at least two or more adjustment main body fixing parts.

[0008] By configuring it in this way, during initial adjustment, the door-side fixed part is made free to rotate around the adjustment axis, and the door is pressed against the housing side so that it closes with approximately equal pressure.The rotation of the door-side fixed part starting from the adjustment axis is then approximately fixed by the link adjustment part, so that even though it has two axes, only the fulcrum axis can contribute to the rotation of the door.Since the range of motion is unified when in use, even large doors can be easily and accurately closed by hand with approximately equal pressure.

[0009] Furthermore, for example, the door mechanism disclosed in Patent Document 2 has a housing-side fixed part that supports a fulcrum shaft extending up and down by passing it through and is fixed to the housing side, a door-side fixed part that supports an adjustment shaft arranged adjacent to and parallel to the fulcrum shaft by passing it through and is fixed to the door, and a link part that connects the housing-side fixed part and the door-side fixed part, and the link part is composed of a parallel link.

[0010] By configuring the door mechanism using a link-type hinge in this way, and by using a parallel link for the link type, it is possible to bias the door with uniform pressure against the door frame simply by adjusting the fixed part on the housing side and the fixed part on the door side when installing the door, and by adjusting so that the door and the gasket (the part that comes into contact with the door when closed) are parallel, without any fine adjustments after installation. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Patent No. 6824546 [Patent Document 2] Japanese Patent Application Publication No. 2024-083728 Summary of the Invention [Problem to be solved by the invention]

[0012] Indeed, the hinge disclosed in Patent Document 1 is excellent in that it can be installed on large, heavy doors that require airtightness but are difficult to adjust, thereby increasing rigidity, making adjustment easier during installation, and improving operability when opening and closing.

[0013] However, due to its structure, the hinge must be fixed to the front of the door's hinged side on the door side, and also to a wall surface on the housing side that is roughly flush with the front of the door, so the wall surface must be significantly modified for installation.Furthermore, when the door is fully opened to 90 degrees toward the aisle, the wall surface must be significantly modified to allow the hinge to escape.

[0014] In other words, although this hinge is advantageous when replacing existing doors or when constructing new buildings, it has the problem of being disadvantageous in terms of construction when retrofitting, for example, an existing subway station corridor.

[0015] Furthermore, the hinge in Patent Document 2 is superior in that it is installed in the gap between the end face of the door on the hanging side and the side of the door frame that faces the end face when the door is closed, which theoretically makes installation easier when installing a door in an existing corridor, etc.

[0016] However, the invention is not complete because the configuration of the parallel link related to this technology cannot be understood from the specification or drawings. Moreover, since there is no adjustment mechanism, it is difficult to adjust the housing-side fixed part and the door-side fixed part when installing the door. Furthermore, even if a large and heavy door can be installed, there is the problem that it cannot be adjusted when misalignment occurs due to bending over time, etc.

[0017] The present invention has been made in consideration of the above circumstances, and aims to provide a hinge and door mechanism that can be installed on large, heavy doors that require airtightness but are difficult to adjust, thereby increasing rigidity, facilitating adjustment during installation, and improving operability when opening and closing. [Means for solving the problem]

[0018] In order to achieve the above object, the present invention provides the following.

[0019] In the invention according to claim 1, the main body fixing part comprises a fulcrum shaft extending vertically, an adjustment shaft disposed adjacent to and parallel to the fulcrum shaft, a door frame side fixing part pivotally supporting the fulcrum shaft and fixed to the door frame, a door side fixing part pivotally supporting the adjustment shaft and fixed to the door side, and a link part that passes through the fulcrum shaft and the adjustment shaft and connects the door frame side fixing part and the door side fixing part, and the door side fixing part is connected to a first door side abutment part that forms an abutment surface. The object is to provide a hinge characterized in that second door side contact portions are formed horizontally adjacent to each other in front and behind from the left and right sides of the adjustment axis in a plan view, parallel to the door toward the hanging point, and the link portion is formed with a first link contact portion that faces the first door side contact portion and abuts against the first door side contact portion when the door is opened or closed, and a second link contact portion that faces the second door side contact portion and abuts against the second door side contact portion when the door is opened or closed.

[0020] The invention according to claim 2 aims to provide the hinge according to claim 1, characterized in that the first door side contact portion and / or the second door side contact portion are formed so as to be able to move forward and backward in the horizontal direction.

[0022] Claim 3 In the invention according to claim 1 or 2 The present invention provides a door mechanism using a plurality of hinges each made up of the body fixing portion described above.

[0023] Claim 4 In the invention according to the present invention, one of the fulcrum shafts and one of the adjustment shafts formed in a long length is provided with a 1 or 2 The present invention provides a door mechanism that supports a hinge consisting of a plurality of the body fixing parts described in the above, and the fulcrum shaft forms a flange part that restricts the downward movement of the link part through which the shaft passes, and also forms a lifting mechanism that allows the fulcrum shaft to move up and down freely, thereby allowing the door to move up and down freely. [Effects of the Invention]

[0024] According to the invention of claim 1, the main body fixing part comprises a fulcrum axis extending vertically, an adjustment axis disposed adjacent to and parallel to the fulcrum axis, a door frame side fixing part which pivotally supports the fulcrum axis and is fixed to the door frame, a door side fixing part which pivotally supports the adjustment axis and is fixed to the door side, and a link part which connects the fulcrum axis and the adjustment axis to the door frame side fixing part and the door side fixing part, and the door side fixing part has a first door side abutment part and a second door side abutment part which form abutment surfaces and are formed adjacent to each other in the horizontal direction from the left and right sides of the adjustment axis toward the hanging side in a plan view, parallel to the door. Furthermore, the link portion is formed with a first link abutment portion that faces the first door-side abutment portion and abuts against the first door-side abutment portion when the door is opened or closed, and a second link abutment portion that faces the second door-side abutment portion and abuts against the second door-side abutment portion when the door is opened or closed, making it easy to install in an existing passageway without large-scale construction work, and also, because the two door-side abutment portions and the corresponding two link abutment portions allow the angle of the door relative to the link portion to be set as intended, it becomes easy to accurately push the door into the door frame when opening or closing the lid, especially when the lid is closed.

[0025] According to the invention described in claim 2, the first door side abutment portion and / or the second door side abutment portion are formed to be able to move back and forth horizontally, which not only makes adjustments during installation easier, but also makes it easy to adjust for misalignment that occurs over time.

[0027] Claim 3 According to the invention described, claims 1 or 2 The door mechanism uses multiple hinges consisting of the main body fixing part described above, making it easy to install in an existing passageway without large-scale construction, and the two door-side abutment parts and the corresponding two link abutment parts allow the angle of the door relative to the link parts to be set as intended, making it easy to accurately push the door into the door frame when opening and closing the lid, especially when closing the lid, and not only does this make adjustments during construction easy, but it also makes it easy to adjust for misalignment that occurs over time.

[0028] Claim 4 According to the invention described in the claims, one long fulcrum shaft and one adjustment shaft are 1 or 2 The door mechanism supports a hinge consisting of a plurality of main body fixing parts described above, and the fulcrum shaft forms a flange part that restricts the downward movement of the link part through which the shaft passes, and forms a lifting mechanism that allows the fulcrum shaft to move up and down freely, so that the door can move up and down freely.By moving the fulcrum shaft up and down, the door also moves up and down, so that by raising the door when opening it, it becomes easier to open it, and by lowering it when closing it, it becomes easier to make the door come into close contact with the door frame. [Brief explanation of the drawings]

[0029] [Figure 1] FIG. 1 is a front view illustrating the launching side of the door mechanism equipped with the hinge according to the present embodiment, with the door open. [Figure 2] FIG. 10 is a front view illustrating the launching side with the door mechanism equipped with the hinge according to the present embodiment closed and lowered downward. [Figure 3] FIG. 1 is a front explanatory view showing the launching side with the door mechanism equipped with the hinge according to this embodiment closed (left in the upper position). [Figure 4] 1 is a plan view illustrating a state in which the door mechanism having the hinge according to the embodiment is closed. FIG. [Figure 5] FIG. 1 is a simplified perspective view of a door mechanism having a hinge according to the present embodiment, with the door side being a see-through view. [Figure 6] FIG. 2 is a partially enlarged top perspective view showing a main body fixing portion of the hinge according to the embodiment. [Figure 7] FIG. 2 is a partially enlarged top perspective view showing a main body fixing portion of the hinge according to the embodiment. [Figure 8] 1(a) is a plan view of the link portion, and FIG. 1(b) is a perspective view from above. [Figure 9] (a) is a partially enlarged plan view showing the main body fixing part when the lid is closed, (b) is a partially enlarged plan view showing the state of the lid halfway through opening and closing, and (c) is a partially enlarged plan view showing the state of the lid halfway through opening and closing. [Figure 10] 1A is a partially enlarged plan view showing the main body fixing part when the cover is open, and FIG. 1B is a partially enlarged plan view showing the cover in the middle of opening and closing. [Figure 11] 10 is a partially enlarged top perspective view showing a main body fixing portion of a hinge according to the present embodiment using another link portion. FIG. [Figure 12] 10(a) is a plan view of another link portion, and FIG. 10(b) is a perspective view from above. [Figure 13] (a) is a partially enlarged plan view showing the main body fixing part when the lid is closed using another link part, (b) is a partially enlarged plan view showing the state of the lid halfway through opening and closing, and (c) is a partially enlarged plan view showing the state of the lid halfway through opening and closing. [Figure 14] 10A is a partially enlarged plan view showing the main body fixing part when the lid is opened using another link part, and FIG. 10B is a partially enlarged plan view showing the state of the lid in the middle of opening and closing. [Figure 15] FIG. 10 is a front view illustrating the launching side of the door mechanism with a hinge formed from another main body fixing part according to this embodiment, with the door open. [Figure 16] 10A is a front perspective view of a hinge made up of another main body fixing part according to this embodiment, FIG. 10B is a cross-sectional view taken along line AA' in FIG. 10A, and FIG. 10C is a partial perspective view of the right side surface. [Figure 17]10A is a front perspective view of a hinge made up of another main body fixing part according to this embodiment, FIG. 10B is a cross-sectional view taken along line BB' in FIG. 10A, and FIG. 10C is a partial perspective view of the right side surface. [Figure 18] (a) is a partially enlarged plan view showing the main body fixing part when the lid is closed using a hinge consisting of another main body fixing part, (b) is a partially enlarged plan view showing the state of the lid halfway through opening and closing, and (c) is a partially enlarged plan view showing the state of the lid halfway through opening and closing. DETAILED DESCRIPTION OF THE INVENTION

[0030] The gist of the hinge according to the present invention is that it has, as a main body fixing portion, a fulcrum axis extending vertically, and an adjustment axis arranged adjacent to and parallel to the fulcrum axis, and is composed of a door frame side fixing portion that supports the fulcrum axis and is fixed to the door frame, a door side fixing portion that supports the adjustment axis and is fixed to the door side, and a link portion that passes through the fulcrum axis and adjusts the axis and connects the door frame side fixing portion and the door side fixing portion, and the door side fixing portion has a first door side abutment portion and a second door side abutment portion that form abutment surfaces and are formed adjacent to each other in the front and back in a horizontal direction from the left and right sides of the adjustment axis toward the hanging point side in a plan view, parallel to the door, and the link portion is characterized by forming a first link abutment portion that faces the first door side abutment portion and abuts against the first door side abutment portion when the door is opened or closed, and a second link abutment portion that faces the second door side abutment portion and abuts against the second door side abutment portion when the door is opened or closed. In other words, the aim is to provide a hinge and door mechanism that can be installed on large, heavy doors that require airtightness but are difficult to adjust, making adjustments easier during installation and improving operability when opening and closing.

[0031] An embodiment of the hinge 1 and door mechanisms D1, D2 according to the present invention will be described below with reference to the drawings. In this description, identical or symmetrical structures and parts on the left and right are generally designated by the same reference numerals, and only one of the left and right sides will be described, with the other side omitted as appropriate.

[0032] In this description, the door frame 81 refers to the floor F, ceiling C, left and right walls WL, WR, and their periphery of the corridor etc. that the outer end faces of the four sides of the door 41 face when closed, as shown in Figure 2, and the side surface 82 of the door frame 81 on the hanging side refers to the left wall WL.

[0033] As shown in Figs. 2, 4 to 7, the hinge 1 according to the embodiment of the present invention comprises a main body fixing portion including a fulcrum shaft 3 extending vertically, an adjustment shaft 12 disposed adjacent to and parallel to the fulcrum shaft 3, a door frame side fixing portion 5 supporting the fulcrum shaft 3 and fixed to the door frame 81, a door side fixing portion 13 supporting the adjustment shaft 12 and fixed to the door side, and a link portion 27 connecting the door frame side fixing portion 5 and the door side fixing portion 13 through which the fulcrum shaft 3 and the adjustment shaft 12 are passed. The first door side abutment portion 18 and the second door side abutment portion 25, which form surfaces 18a, 25a, are formed adjacent to each other in the front and back direction in a horizontal direction from the left and right sides of the adjustment shaft 12 toward the hanging point side parallel to the door 41 in a plan view, and the link portion 27 forms a first link abutment portion 30 that faces the first door side abutment portion 18 and abuts against the first door side abutment portion 18 when the door 41 is opened or closed, and a second link abutment portion 33 that faces the second door side abutment portion 25 and abuts against the second door side abutment portion 25 when the door 41 is opened or closed.

[0034] Moreover, the first door side contact portion 18 and / or the second door side contact portion 25 are formed so as to be able to move forward and backward in the horizontal direction.

[0035] As shown in FIGS. 4 and 8, the first link contact portion 30 and / or the second link contact portion 33 are respectively provided to protrude forward and / or rearward in plan view on the periphery of the adjustment shaft 12 through which the shaft passes.

[0036] The door mechanism D1 is constructed using a plurality of hinges 1 each having such a main body fixing portion 2 as described above. In the door mechanism D1, not only can one long fulcrum shaft 3 and one adjustment shaft 12 be passed through all of the main body fixing portions 2 as shown in, for example, Figures 2 and 3, but the door mechanism D1 can also be constructed using hinges 1 each having a fulcrum shaft 3 and an adjustment shaft 12 independently for each main body fixing portion 2.

[0037] Furthermore, in this embodiment, as shown in FIG. 3, a hinge consisting of a plurality of main body fixing parts is supported on one long fulcrum shaft 3 and one adjustment shaft 12, and the fulcrum shaft 3 has a flange part 4 that restricts the downward movement of the link part 27 through which the shaft passes, and a lifting mechanism 121 is formed to allow the fulcrum shaft 3 to move up and down, thereby forming a door mechanism D2 in which the door 41 is configured to move up and down freely.

[0038] The hinge 1 and door mechanisms D1, D2 configured in this manner are employed, for example, in a swing door as shown in Figures 1 to 4. Specifically, a door mechanism D1 using the hinge 1 of this embodiment is installed in the gap between the left and right walls WL, WR that form a passageway within a building, and the hinge 1 is disposed in the gap between the end face 42 of the door 41 on the hanging side and the side face 82 (surface of the left wall WL) of the door frame 81 that faces the end face 42 when the door is closed, and the door 41, whose door tip extends close to the right wall WR (door frame 81), closes the passageway.

[0039] In addition, if the door stop is on the hanging side, it is connected to the left wall WL behind the hinge 1 to form a first door stop 83 that extends from the floor F to the ceiling C, and if it is on the door end side, it is connected to the right wall WR to form a second door stop 84 that extends from the floor F to the ceiling C.

[0040] Furthermore, if a door stop corresponding to the upper part of the door 41 is required, a third door stop (not shown) can be formed above the first door stop 83 and the second door stop 84, and if a door sill is required on the floor F, it can be installed as appropriate.

[0041] Furthermore, if the door 41 is a waterproof door, a waterproof rubber g is formed on each of the first door stop 83 and the second door stop 84 as shown in Figure 4, and a waterproof rubber (not shown) is also formed on the lower end surface of the door 41.By abutting the door 41 located at the top as shown in Figure 3 against the door stops 83, 84, and then lowering the door 41 to the floor F as shown in Figure 2 using the lifting mechanism 121, it is possible to prevent water from entering at least from the floor surface and the left and right walls WL, WR.

[0042] In this case, if it is desired to waterproof the entire passageway including the top of the door 41, a waterproof rubber may be formed on the third door stopper as well.

[0043] The hinge 1 and door mechanisms D1 and D2 according to this embodiment will be specifically described in detail below with reference to the drawings.

[0044] As shown in Figures 2 and 3, the fulcrum shaft 3 and the adjustment shaft 12 may be configured not only in the hinge 1 in which one long fulcrum shaft 3 and one adjustment shaft 12 are passed through all of the main body fixing parts 2, but also in which the door mechanism D1 is configured with a hinge 1 having a fulcrum shaft 3 and an adjustment shaft 12 independently for each main body fixing part 2. However, in the following explanation, the configuration of the hinge 1 and door mechanism D1 in which the long fulcrum shaft 3 and long adjustment shaft 12 are passed through all of the main body fixing parts 2 will be mainly explained, and then the hinge 1 having a fulcrum shaft 3 and an adjustment shaft 12 independently for each main body fixing part 2 and the door mechanism D1 will be explained.

[0045] As shown in FIG. 2, the hinge 1 includes a fulcrum shaft 3 made of metal and formed into a long, round bar-like rod extending vertically, and a long adjustment shaft 12 arranged adjacent to and parallel to the fulcrum shaft 3.

[0046] In addition, a pair of metal block-shaped door frame side fixing parts 5 that support the fulcrum shaft 3 and are fixed to the side surface 82 of the door frame 81, and a pair of metal rectangular block-shaped door side fixing parts 13 that support the adjustment shaft 12 and are fixed to the end face 42 on the door side are formed, and the fulcrum shaft 3 and the adjustment shaft 12 are passed through metal block-shaped link parts 27 that connect the door frame side fixing parts 5 and the door side fixing parts 13, and three hinges 1 each made up of a pair of door frame side fixing parts 5 and door side fixing parts 13 are formed to constitute the door mechanism D1.

[0047] As shown in Figures 5 to 7, the door frame side fixing portion 5 is integrally formed with a flange portion 6 for fixing to the side surface 82 of the door frame 81 and a fulcrum bearing portion 9 with a fulcrum bearing hole 10 drilled vertically through it, and the flange portion 6 is formed in a horizontally long rectangular shape with a predetermined thickness, and bolt insertion holes 7 are drilled horizontally near each corner of the flange portion 6 so that it can be fastened with bolts 8 into four bolt holes (not shown) which are female threads threaded into the side surface 82 of the door frame 81.

[0048] The fulcrum bearing portion 9 is formed in the shape of a rectangular block with two chamfered outer ends facing the door and a fulcrum bearing hole 10 drilled in approximately the center, and is connected so as to extend horizontally from the center of the flange portion 6 so as not to interfere with the bolt insertion hole 7.

[0049] In the door mechanism D2 described below, which forms a lifting mechanism 121 to allow the door 41 to move up and down freely, such a fulcrum bearing portion 9 forms a part of the main body fixing portion 2 in pair so as to sandwich the link portion 27, which has the fulcrum shaft 3 passing through it, at a distance that allows the link portion 27 to move up and down freely within a predetermined range, but if up and down movement is not required, the distance for the up and down movement of the link portion 27 does not need to be taken into consideration.

[0050] In this embodiment, the door frame side fixing portion 5 is formed as a pair of parts, but the door frame side fixing portion 5 may be formed as an integrated part.

[0051] The door-side fixing part 13 is formed in the shape of a rectangular block with two chamfered outer ends facing the side surface 82 of the door frame 81 and with an adjustment bearing hole 14 drilled in approximately the center, and bolt insertion holes 15 are drilled horizontally near the corners of the left side surface of the door-side fixing part 13 so that it can be fastened with long bolts 16 to four bolt holes (not shown) that are female threads that are threaded into the door-side end surface 42, and is fixed to the door-side end surface 42.

[0052] The door-side fixing parts 13 form a pair of parts of the main body fixing part 2 so as to sandwich the link part 27, through which the adjustment shaft 12 passes, at a distance such that the link part 27 does not move up and down freely.

[0053] In addition, as shown in Figure 7, a second door-side abutment portion 25 is formed in the gap between the pair of door-side fixing portions 13, and has an abutment surface 25a that faces the side surface 82 of the door frame 81 on the hanging side when the door is closed.

[0054] The second door side abutment portion 25 is cylindrical in appearance with an opening 100 for inserting a bolt (not shown) facing horizontally into a female thread engraved into the door side end face 42, and a step is formed inside that is small enough to prevent the bolt head from passing through, so that the inserted bolt can be screwed into the female thread and fixed to the door side end face 42.

[0055] By forming it in this manner, the second door side abutment portion 25 protruding from the door side end face 42 can be configured to abut freely with the second link abutment portion 33 formed on the link portion 27 described below, and further, by using second door side abutment portions 25 of different lengths, the abutment angle with the second link abutment portion 33 can be freely adjusted.

[0056] The second door side contact portion 25 can be modified and changed in various ways, such as by forming it from a cushioning material such as urethane to reduce the impact when it contacts the second link contact portion 33, or by forming the second door side contact portion 25 itself from a single bolt so that the angle of contact with the second link contact portion 33 can be freely adjusted by moving the bolt back and forth.

[0057] As shown in FIG. 6, the first door-side contact portion 18 is formed by erecting a rectangular block-shaped contact base 19 on the front surface of the pair of door-side fixing portions 13 with a slight gap from the end surface 42 of the door 41, and by forming the first door-side contact portion 18 that protrudes horizontally from the surface facing the side surface 82 of the door frame 81.

[0058] Specifically, two female screw holes (not shown) are formed on the front surface of each of the pair of door side fixing parts 13, one above the other, and the abutment base 19 is fixed to the door side fixing part 13 by fastening bolts 21 through four bolt holes 20 drilled in the abutment base 19.

[0059] A female screw hole 22 is formed horizontally at approximately the center of the surface of the abutment base 19 facing the side surface 82 of the door frame 81, and an adjustment bolt 24 with its head as the abutment surface 18a is screwed into the hole together with a fixing nut 23 to form the first door side abutment portion 18.

[0060] By forming it in this manner, the first door side abutment portion 18 protruding from the abutment base 19 can be configured to abut freely with the first link abutment portion 30 formed on the link portion 27 described below, and furthermore, it is possible to fine-tune the abutment angle with the first link abutment portion 30 by adjusting the adjustment bolt 24 forward and backward.

[0061] The first door side contact portion 18 can be modified and changed in various ways, such as by forming a cushioning material such as urethane on the contact surface 18a of the bolt head of the adjustment bolt 24 to reduce the impact when it contacts the first link contact portion 30.

[0062] In addition, in this embodiment, the door side fixing part 13 is formed as a pair of parts, but it may also be formed as an integral part, and although the first door side abutment part 18 protrudes using the abutment base 19, it may also be formed as part of the integral door side fixing part 13, and furthermore, the second door side abutment part 25 may not protrude from the end face 42 of the door 41 but may be formed as part of the integral door side fixing part 13.

[0063] Next, as shown in Figures 8(a) and (b), the link portion 27 is formed in a block shape made of metal with both ends of the rectangular shape in a plan view curved and with a first link abutment portion 30 protruding from the front side near one end and a second link abutment portion 33 protruding from the rear side.

[0064] An adjustment shaft insertion hole 28 is drilled at one end side, penetrating vertically to allow the adjustment shaft 12 to pass through, and a fulcrum shaft insertion hole 29 is drilled at the other end side, penetrating vertically to allow the fulcrum shaft 3 to pass through, with each hole fitted with a cylindrical sleeve to improve sliding properties.

[0065] As shown in FIG. 4, the first link contact portion 30 and the second link contact portion 33 are formed so as to be within the range of the thickness of the door 41 in a plan view on the periphery of the adjustment shaft 12 through which the shaft passes.

[0066] As shown in Figures 8(a) and 8(b), the first link abutment portion 30 is formed by a curved edge 31 that curves from the other end side toward one end side, protrudes forward, is inclined, and has an end point that is approximately horizontal, and a first abutment surface 32 that extends from the end point at an approximately right angle rearward toward the adjustment shaft insertion hole 28, and the first abutment surface 32 is connected to one end side while curving.

[0067] In addition, the second link abutment portion 33 is in the shape of a right triangle with a right-angled apex facing rearward on the opposite side of the first link abutment portion 30, and the surface facing one end side is the second abutment surface 34 that abuts against the second door side abutment portion 25.

[0068] In addition, the shape of the curved edge 31 of the first link abutment portion 30 is not limited to this embodiment as long as it has a first abutment surface 32, and the second link abutment portion 33 is not limited to a right-angled triangle shape and can form a second abutment surface 34 of a predetermined angle.

[0069] For example, as shown in Figures 12(a) and (b) in link portion 27a, various modifications and variations are possible, such as forming the second link abutment portion 33 in line symmetry with the above-mentioned first link abutment portion 30 and giving it a similar shape, so that both the first abutment surface 32 and the second abutment surface 34 are parallel to the end surface 42 of the door 41 when the door 41 is closed.

[0070] In this case, the second door side contact portion 25 may use the configuration shown in Figure 7 as is, or may be configured as shown in Figure 11 using the configuration of the first door side contact portion 18 shown in Figure 6.

[0071] The door frame side fixing portion 5 and the door side fixing portion 13, which pass through the fulcrum axis 3 and adjustment axis 12 formed in this manner, and the main body fixing portion 2, which consists of the link portion 27a, are arranged in three locations on the hanging side to form an integrated door mechanism D1.

[0072] The door mechanism D1 can accommodate the door 41 shown in FIG. 2, which blocks or stops water from entering the passageway, by opening the door 41 as shown in FIG. 1 and aligning the door 41 with the left wall WL, thereby allowing pedestrians to walk through the passageway.

[0073] Specifically, when the lid is closed, the hinge 1 portion abuts the abutment surface 18a of the first door side abutment portion 18 and the first abutment surface 32 of the first link abutment portion 30 in a planar cross-sectional view as shown in Figure 9(a), so that the door 41 and the link portion 27 form an approximately straight line in a planar view, and water is stopped while being subjected to the water pressure p caused by flooding as shown in Figure 4.

[0074] Furthermore, when opening the lid, the door 41 is pulled toward the user using a handle or the like (not shown) as shown in FIG. 9(b), causing the abutment surface 25a of the second door-side abutment portion 25 to abut against the second abutment surface 34 of the second link abutment portion 33, and the door 41 and the link portion 27 are kept at a predetermined angle (45° in this embodiment) in plan view. As the door 41 is rotated toward the left wall WL as shown in FIG. 9(c), the abutment between the second door-side abutment portion 25 and the second abutment surface 34 of the second link abutment portion 33 is released, and then the abutment surface 18a of the first door-side abutment portion 18 abuts against the first abutment surface 32 of the first link abutment portion 30, causing the door 41 and the link portion 27 to form an approximately straight line in plan view, and the door 41 can be aligned with the left wall WL as shown in FIG. 10(a).

[0075] 9(c), the door 41 and the link portion 27 are aligned in a substantially straight line in plan view, and then the second door-side abutment 18a of the first door-side abutment 18 and the first link abutment 30 come into contact with each other. The abutment surface 25a of the contact portion 25 abuts against the second abutment surface 34 of the second link abutment portion 33, maintaining a position where the door 41 and the link portion 27 form a predetermined angle (45° in this embodiment) in a planar view, and by pushing it further, the abutment surface 25a of the second door-side abutment portion 25 and the second abutment surface 34 of the second link abutment portion 33 is released, and the abutment surface 18a of the first door-side abutment portion 18 abuts against the first abutment surface 32 of the first link abutment portion 30, so that the door 41 and the link portion 27 form an approximately straight line in a planar view as shown in Figure 9(a), allowing the door 41 to be closed.

[0076] When the link portion 27a shown in Figs. 12(a) and (b) is used, the angle between the link portion 27a and the door 41 can be made small when the door 41 is opened (Figs. 13(a) → (b) → (c) → Fig. 14(b) → (a)) and closed (Figs. 14(a) → (b) → Fig. 13(c) → (b) → (a)), depending on the forward and backward adjustment of the first door side abutment portion 18 and the second door side abutment portion 25. Therefore, the link portion can be selected and installed depending on the positional relationship between the door 41, the door frame 81 and the door stop and the situation.

[0077] Furthermore, the hinge 1 and door mechanism D1 described above have the door frame side fixing portion 5 and the door side fixing portion 13 fixed to the side surface 82 of the door frame 81 and the end face 42 on the door side, respectively, but the door frame side fixing portion 5 and the door side fixing portion 13 can also be fixed to the front surface 90a of the door frame 81 and the front surface 90b of the door 41.

[0078] Specifically, as shown in Figures 15 and 16, the door frame side fixing part 5 consists of a pair of rectangular block-shaped fulcrum bearing parts 49, and the fulcrum bearing parts 49 have bolt insertion holes 47 drilled in two locations adjacent to each other in the horizontal direction, penetrating from front to back, for fixing to the front surface 90a of the door frame 81, and have fulcrum bearing holes 50 formed with bottoms in the vertical direction at positions that do not interfere with the bolt insertion holes 47, for supporting the fulcrum shaft 3 by press-fitting or pivoting so that it can rotate freely, and are arranged above and below with a gap approximately the thickness of the link part 27b so that the openings of the fulcrum bearing holes 50 face each other.

[0079] That is, the door frame side fixing portion 5 forms a part of the main body fixing portion 2 in pair so as to sandwich the link portion 27b, which passes through the fulcrum shaft 3, at a distance that prevents the link portion 27b from moving up and down freely.

[0080] The fulcrum bearing portion 49 is fastened and fixed with bolts 48 into four bolt holes (not shown) that are female-threaded on the front surface 90a of the door frame 81.

[0081] In this embodiment, the door-frame-side fixing portion 5 including the fulcrum shaft 3 is formed as a pair of parts, but the fulcrum bearing portion 49 may also be formed as an integral part.

[0082] The door-side fixed portion 13 is composed of a pair of rectangular block-shaped fulcrum bearing portions 49 having the same structure as the above-mentioned pair, and an abutment base 59 connecting these.

[0083] Specifically, the door-side fixed portion 13 is composed of a pair of rectangular block-shaped adjustment bearing portions 52 and an abutment base 59. The adjustment bearing portion 52 has two bolt insertion holes 55 drilled horizontally adjacent to each other and penetrating from front to back to fix it to the front surface 90b of the door 41, and an adjustment bearing hole 54 with a bottom is formed vertically at a position that does not interfere with the bolt insertion hole 55 to support the adjustment shaft 12 by press-fitting or pivoting it so that it can rotate freely. The adjustment bearing holes 54 are arranged above and below with a gap approximately the thickness of the link portion 27b so that the openings of the adjustment bearing holes 54 face each other.

[0084] That is, the door side fixing part 13 is made up of a pair of adjustment bearing parts 52 and an abutment base 59, which sandwich the link part 27b, through which the adjustment shaft 12 passes, at a distance that prevents the link part 27b from moving freely up and down.

[0085] 16(a) and 16(c), in order to fasten and fix the abutment base 59, three female screw holes 57 are threaded horizontally at each of the corners of an equilateral triangle and an inverted equilateral triangle that are respectively formed at the center near the upper end of the upper adjustment bearing portion 52 and the center near the lower end of the lower adjustment bearing portion 52.

[0086] The abutment base 59 is formed in a rectangular shape with a predetermined thickness, with the first door side abutment portion 18 and the second door side abutment portion 25 formed in it, and on the right side, six bolt holes 60 are drilled horizontally at the corners of an equilateral triangle and an inverted equilateral triangle, with the vertices being the center near the upper end and the center near the lower end, respectively, and bolts 61 are threaded into the female threaded holes 57 of the upper and lower adjustment bearing portions 52 through the bolt holes 60 to fasten and fix them, so that the abutment base 59 is formed integrally with the adjustment bearing portions 52.

[0087] As shown in Figures 16(a) and 16(b), the first door side contact portion 18 and the second door side contact portion 25 are formed by screwing an adjustment bolt 24 consisting of a hexagonal socket clamping screw with its head forming the contact surfaces 18a, 25a into a female threaded hole 62 that penetrates horizontally and is formed in approximately the center of the contact base 59 that faces the right side of the link portion 27b.

[0088] By forming it in this manner, the first door side abutment portion 18 and the second door side abutment portion 25, which are adjustably protruded from the abutment base 59, can be configured to abut freely with the first link abutment portion 30 and the second link abutment portion 33 formed on the link portion 27b, and further, by adjusting the advance and retreat of the adjustment bolt 24, it becomes possible to fine-tune the abutment angle between the first link abutment portion 30 and the second link abutment portion 33.

[0089] The first door side contact portion 18 and the second door side contact portion 25 may be plungers with a spring installed inside a clamping screw, or may be configured with the adjustment bolt 24 and fixing nut 23 described above (FIG. 6, etc.). In this case, various modifications and changes are possible as long as the contact surfaces 18a, 25a and the first link contact portion 30 and the second link contact portion 33 come into contact, such as by forming urethane or the like as a cushioning material on the contact surfaces 18a, 25a of the bolt head of the adjustment bolt 24 to mitigate the impact when the first link contact portion 30 and the second link contact portion 33 come into contact.

[0090] In this case, as shown in Figures 16(a), (b), and (c), the link portion 27b is made of metal and has a block-like rectangular shape in plan view, one end of which is curved to form a first link abutment portion 30 directly on the front side near the other end, and the rear side protrudes to form a second link abutment portion 33.The right side surfaces, which form the abutment surfaces of each, are formed flat, with the front side forming the first abutment surface 32 and the rear side forming the second abutment surface 34.

[0091] In addition, a fulcrum shaft insertion hole 29 is drilled at one end side, penetrating vertically to allow the fulcrum shaft 3 to pass through, and an adjustment shaft insertion hole 28 is drilled at the other end side, penetrating vertically to allow the adjustment shaft 12 to pass through, and a cylindrical sleeve 36 is fitted into each hole to improve sliding properties.

[0092] Although the first abutment surface 32 and the second abutment surface 34 are formed on the flat right side surface of the link portion 27b, the right side surface of the link portion 27b is not necessarily limited to being flat as long as the right side surface of the link portion 27b does not inadvertently come into contact with the abutment base 59, and various modifications and variations are possible.

[0093] For example, as shown in Figures 12(a) and (b) in link portion 27a, various modifications and variations are possible, such as forming the second link abutment portion 33 in line symmetry with the above-mentioned first link abutment portion 30 and giving it a similar shape, so that both the first abutment surface 32 and the second abutment surface 34 are parallel to the end surface 42 of the door 41 when the door 41 is closed.

[0094] Furthermore, as shown in FIG. 17, the door-side fixing part 13 may have the first door-side abutment part 18 formed by the front side of the left side of the abutment base 59, which also serves as the first door-side abutment part 18 and abutment surface 18a, without using an adjustment bolt 24 consisting of a clamping screw or the like; conversely, although not shown, the second door-side abutment part 25 may have the second door-side abutment part 25 formed by the rear side of the left side of the abutment base 59, which also serves as the second door-side abutment part 25 and abutment surface 25a, without using an adjustment bolt 24 consisting of a clamping screw or the like.

[0095] The door side fixing portion 13 is fastened and fixed with bolts 63 through bolt insertion holes 55 drilled in the adjustment bearing portion 52 into four bolt holes (not shown) consisting of female threads threaded into the front surface 90b of the door 41.

[0096] In this embodiment, the door-side fixing portion 13 including the adjustment shaft 12 is formed as an integrated part, but the door-side fixing portion 13 may be formed as a plurality of separate parts.

[0097] The door frame side fixing part 5 and door side fixing part 13, which pass through the fulcrum axis 3 and adjustment axis 12 formed in this manner, and the main body fixing part 2, which consists of the link part 27b, are arranged in two locations on the front surface 90a of the door frame 81 on the hanging side and on the front surface 90b of the door 41, to form another integrated door mechanism D1 as shown in Figure 15.

[0098] 15 to 17 described above, for example, in the case of the door mechanism D1 shown in FIG. 17 in which the first door side abutment portion 18 is formed by the front side of the left side of the abutment base 59 as the first door side abutment portion 18 and abutment surface 18a without using an adjustment bolt 24 consisting of a clamping screw or the like, the abutment surface 18a of the first door side abutment portion 18 and the first abutment surface 32 of the first link abutment portion 30 abut against each other, and the door 41 can be pushed into the door stop at a predetermined angle as shown in FIG. 18(a) to close the door 41. This makes it possible to reduce the angle between the link portion 27b and the door 41 when the door 41 is opened (FIGS. 18(a) → (b) → (c)) and closed (FIGS. 18(c) → (b) → (a)). Therefore, the link portion can be selected and installed according to the positional relationship between the door 41, the door frame 81, and the door stop and the situation.

[0099] Next, the door mechanism D2 in which a lifting mechanism 121 for the door 41 is further added to the hinge 1 described above will be described in detail.

[0100] As shown in Figures 2 to 5, the lifting mechanism 121 comprises a first gear 125 integrally connected to the lower side of a handle rotation shaft 123 which is erected so as to be freely rotatable, a second gear 127 which is adjacent to and meshes with the first gear 125, and a cylindrical lifting nut 126 with a bottom which is connected to the second gear 127 and threadedly engages with a trapezoidal screw (not shown) which is erected so as to be freely rotatable above, and the lifting nut 126 is connected to the lower end of the fulcrum shaft 3 at the top.

[0101] In addition, a flange 4 is formed on the fulcrum shaft 3 to restrict downward movement of the link portion 27 that passes through the fulcrum shaft 3, so that the link portion 27 moves up and down integrally with the up and down movement of the fulcrum shaft 3.

[0102] Therefore, the vertical movement of the lifting nut 126 caused by the rotation of the handle rotation shaft 123 causes the link portion 27 to move up and down together with the fulcrum shaft 3, and as a result, the door 41 can be freely moved up and down.

[0103] To explain each part of the lifting mechanism 121 in more detail, a protruding rectangular block-shaped lifting base 122 is formed and fixed to the lower side surface 82 of the door frame 81 with bolts (not shown) to rotatably support the first gear 125 and the second gear 127, and a handle rotation shaft hole (not shown) is drilled in the upper surface of the lifting base 122, through which the lower end of the handle rotation shaft 123 is rotatably inserted, and a trapezoidal screw insertion hole (not shown) is drilled through which the lower end of a trapezoidal screw is rotatably inserted.

[0104] The handle rotation shaft 123 is a round rod with a hexagonal handle engagement portion 124 formed on the upper edge so that a separate handle (not shown) can be engaged and attached during use, and a first gear 125 that rotates horizontally around the axis is connected below it, and the lower end is passed through the handle rotation shaft hole of the lifting base 122.

[0105] The trapezoidal screw has a second gear 127 connected thereto below that rotates horizontally around its axis, and its lower end is inserted into a trapezoidal screw insertion hole in the lift base 122 .

[0106] The bottomed cylindrical lifting nut 126 that screws onto the trapezoidal screw has its bottom facing up and is threaded onto the inner surface of the trapezoidal screw to form a nut consisting of a female screw with sufficient stroke up and down, and a connecting hole (not shown) through which the fulcrum shaft 3 is inserted is drilled at the top, and the lifting nut 126 and the fulcrum shaft 3 are connected together from the side by a set screw (not shown).

[0107] Furthermore, the flange 4, which restricts the downward movement of the link portion 27 relative to the fulcrum shaft 3 and allows it to move up and down integrally, is formed by forming a groove (not shown) on the circumferential surface of the fulcrum shaft 3 and fitting a C-shaped retaining ring into the groove, thereby allowing the link portion 27 to be placed on top of the C-shaped retaining ring.

[0108] In this embodiment, in order to reinforce the up and down movement of the lifting nut 126, a rectangular block-shaped reinforcing block 128 is formed above the lifting base 122 and fixed to the lower side surface 82 of the door frame 81 with a bolt (not shown) to protrude from the base. The reinforcing block 128 has a sliding hole (not shown) drilled therein, which is large enough to allow it to slide freely in contact with the outer surface of the lifting nut 126.

[0109] In order to move the door 41 up and down using this lifting mechanism 121, the rotation of the handle (not shown) can be converted into up and down movement of the door 41 by engaging with the hexagonal handle engaging portion 124 of the handle rotation shaft 123.

[0110] As described above, the hinge 1 and door mechanisms D1, D2 according to this embodiment are configured, and the main body fixing part 2 comprises the fulcrum shaft 3 extending vertically, the adjustment shaft 12 disposed adjacent to and parallel to the fulcrum shaft 3, the door frame side fixing part 5 pivotally supporting the fulcrum shaft 3 and fixed to the door frame 81, the door side fixing part 13 pivotally supporting the adjustment shaft 12 and fixed to the door side, and the link part 27 connecting the fulcrum shaft 3 and the adjustment shaft 12 through the shaft and connecting the door frame side fixing part 5 and the door side fixing part 13, and the door side fixing part 13 has the first door side abutment part 18 and the second door side abutment part 25, which form abutment surfaces 18a, 25a, facing the hanging side from the left and right sides of the adjustment shaft 12 in a plan view, parallel to the door 41. Formed adjacent to each other in the horizontal direction, link portion 27 has a first link abutment portion 30 that faces first door side abutment portion 18 and abuts against first door side abutment portion 18 when door 41 is opened or closed, and a second link abutment portion 33 that faces second door side abutment portion 25 and abuts against second door side abutment portion 25 when door 41 is opened or closed, which makes it easy to install in an existing passageway without large-scale construction, and also, by using the two door side abutment portions 18, 25 and the corresponding two link abutment portions 30, 33, the angle of door 41 relative to link portion 27 can be set as intended, which makes it easy to accurately push door 41 into door frame 81 when opening or closing the lid, especially when closing the lid.

[0111] Furthermore, the first door side contact portion 18 and / or the second door side contact portion 25 are formed to be freely movable back and forth in the horizontal direction, which not only makes adjustments during installation easier, but also makes it easy to adjust for misalignment that occurs over time.

[0112] Furthermore, since the first link abutment portion 30 and / or the second link abutment portion 33 are respectively protruded forward and / or backward in a plan view at the periphery of the adjustment shaft through which the shaft passes, the link portion 27 does not hinder full opening even when the door 41 is fully opened to 90 degrees so as to be close to the wall of the passage.

[0113] Furthermore, because the door mechanism D1 uses multiple hinges 1 consisting of the above-mentioned main body fixing portion, it can be easily installed in an existing corridor without large-scale construction, and the two door-side abutment portions 18, 25 and the corresponding two link abutment portions 30, 33 allow the angle of the door 41 relative to the link portion 27 to be set as intended, making it easy to accurately push the door 41 into the door frame 81 when opening and closing the lid, especially when closing the lid, and even if the door 41 is fully opened to 90 degrees so that it is close to the wall of the corridor, the link portion 27 will not hinder full opening, and moreover, not only is adjustment easy during construction, but it can also be easily adjusted for misalignment that occurs over time.

[0114] Furthermore, in door mechanism D2, in which a hinge consisting of a plurality of main body fixing parts is supported on one long fulcrum shaft 3 and one adjustment shaft 12, and the fulcrum shaft 3 forms a flange part 4 that restricts the downward movement of the link part 27 through which the shaft passes, and a lifting mechanism 121 is formed that allows the fulcrum shaft 3 to move up and down freely, and the door 41 is configured to be able to move up and down freely, the door 41 also moves up and down by moving the fulcrum shaft 3 up and down, so that by raising the door 41 when opening it, it becomes easier to open it, and by lowering it when closing it, it becomes easier for the door 41 to abut tightly against the door frame 81.

[0115] Although the preferred embodiment of the hinge 1 and door mechanisms D1, D2 according to this embodiment of the present invention has been described above, the present invention is not limited to a specific embodiment, and various modifications and variations are possible. [Explanation of symbols]

[0116] D1 Door mechanism D2 Door mechanism (with lifting mechanism) 1 hinge 2 Main unit fixing part 3. Fulcrum axis 4 Tsuba 5 Door frame side fixing part 12 Adjustment axis 13 Door side fixing part 18 First door contact part 18a Contact surface 25 Second door side contact part 25a Contact surface 27 Link section 27a Link section 27b Link section 30 First link contact portion 33 Second link abutment portion 41 Door 81 Door Frame 121 Lifting mechanism

Claims

1. The main body fixing part comprises a fulcrum shaft extending vertically, an adjustment shaft disposed adjacent to and parallel to the fulcrum shaft, a door frame side fixing part supporting the fulcrum shaft and fixed to the door frame, a door side fixing part supporting the adjustment shaft and fixed to the door side, and a link part passing through the fulcrum shaft and the adjustment shaft and connecting the door frame side fixing part and the door side fixing part, The door-side fixing portion has a first door-side abutment portion and a second door-side abutment portion, each of which forms an abutment surface, formed adjacent to each other in the horizontal direction from the left and right sides of the adjustment shaft toward the hanging side in parallel with the door in a plan view, The link portion is formed with a first link abutment portion that faces the first door-side abutment portion and abuts against the first door-side abutment portion when the door is opened or closed, and a second link abutment portion that faces the second door-side abutment portion and abuts against the second door-side abutment portion when the door is opened or closed.

2. 2. The hinge according to claim 1, wherein the first door-side contact portion and / or the second door-side contact portion are formed so as to be movable back and forth in a horizontal direction.

3. A door mechanism using multiple hinges consisting of the main body fixing portion described in claim 1 or 2.

4. A door mechanism characterized in that a hinge consisting of a plurality of the main body fixing parts described in claim 1 or 2 is supported on one long fulcrum shaft and one adjustment shaft, the fulcrum shaft forming a flange part that restricts the downward movement of the link part through which the shaft passes, and forming a lifting mechanism that allows the fulcrum shaft to move up and down freely, thereby configuring the door to move up and down freely.

Images