Entrance door device

Abstract

To provide an entrance door device that can inhibit the movement of the hinge in all directions.SOLUTION: An entrance door device 1, including a frame body 2 and a door body 3 connected to the frame body 2 via a hinge 4 in an opening / closing manner, in which the hinge 4 includes: a frame-body-side hinge member 41 that is fixed to the frame body 2 and has a frame-body-side cylindrical portion 412 extending in the vertical direction; a door-body-side hinge member 42 that has a door-body-side cylindrical portion 422 fixed to the door body 3, disposed above the frame-body-side hinge member 41 to extend in the vertical direction, and notches 425, 426 formed in the midway of the door-body-side cylindrical portion 422 in the vertical direction; a shaft member 43 that axially penetrates the door-body-side cylindrical portion 422 of the door-body-side hinge member 42 and whose lower end is located inside the frame-body-side cylindrical portion 412 of the frame-body-side hinge member 41; and ring members 45, 46 that have mating portions 451, 461 disposed in the notches 425, 426 and that are fastened to the door-body-side hinge member 42.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an entrance door device. [Background technology]

[0002] Conventionally, a door device in which a door body is attached to a frame body by a hinge so as to be able to open and close is known (see, for example, Patent Document 1). This door device is configured so that a pin is disposed to penetrate vertically through a frame-side hinge member and a door body-side hinge member, and the pin serves as a rotation axis for opening and closing. A slight clearance is provided between the pin and the through-hole in the frame-side hinge member in which the pin is disposed, so that the door device can be opened and closed using the pin as a rotation axis. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-336851 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned door device is for indoor use and does not include a door closer (door opening / closing control mechanism) that controls the movement speed of the door body. When this door device is applied to, for example, a front door equipped with a door closer, the door closer exerts a pulling force on the door body when the door body is opened or closed. Therefore, when the door body is opened or closed in a sudden reverse motion, the slight clearance between the through-hole of the frame-side hinge member and the pin can cause the pin to suddenly move toward the interior or exterior of the room, causing the frame-side hinge member to move left and right, front and back. Therefore, there is a need for an front door device that can suppress the hinge's movement in all directions, including left and right and front and back, when the door body is opened or closed.

[0005] The present disclosure aims to provide an entrance door device that can suppress movement of the hinge in all directions, including left and right and front and back. [Means for solving the problem]

[0006] The present disclosure relates to an entrance door device comprising: a frame; and a door body attached to the frame body via a hinge so as to be able to open and close, the hinge comprising: a frame-side hinge member fixed to the frame body and having a frame-side cylindrical portion extending in a vertical direction; a door-body-side hinge member fixed to the door body, disposed above the frame-side hinge member, and having a door-body-side cylindrical portion extending in a vertical direction and a cutout portion formed by cutting out the door-body-side cylindrical portion along a circumferential direction midway in the vertical direction; a shaft member that axially passes through the door-body-side cylindrical portion of the door-body-side hinge member and has a lower end portion disposed inside the frame-side cylindrical portion of the frame-side hinge member; and a ring member that is disposed in the cutout portion and has a locking portion that locks with the door-body-side hinge member. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a front view of the entrance door device as seen from the outside of the room. [Figure 2] 1 is an exploded perspective view of a door body and a frame body in an entrance door device. FIG. [Figure 3] FIG. 2 is a partially exploded perspective view of the upper hinge of the entrance door device, viewed from one side. [Figure 4] 1 is a partially exploded perspective view of the upper hinge of the entrance door device as seen from the other side. FIG. [Figure 5] FIG. 2 is an exploded perspective view of the upper hinge in the entrance door device. [Figure 6] FIG. 2 is a vertical cross-sectional view showing an upper hinge in the entrance door device. [Figure 7] FIG. 7 is a cross-sectional view taken along line AA in FIG. 6. [Figure 8] FIG. 7 is a cross-sectional view taken along line BB in FIG. 6. [Figure 9] FIG. 7 is a cross-sectional view taken along line CC in FIG. 6. [Figure 10]10A and 10B are diagrams showing the operation of hanging the door body in the entrance door device. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the entrance door device of the present disclosure will be described in detail with reference to the drawings. As shown in Fig. 1, the entrance door device 1 comprises a frame body 2 provided at an opening in a building skeleton, and a door body 3 attached to the inside of the frame body 2 via a plurality of hinges 4, 5 so as to be able to open and close.

[0009] The frame body 2 is formed by framing an upper frame 21, a lower frame 22, and left and right vertical frames 23, 24 in a rectangular shape. The lower frame 22 of the frame body 2 is not necessarily provided. The entrance door device 1 of this embodiment is an outward-opening type door device in which the door body 3 opens toward the outside of the room relative to the frame body 2. The X direction shown in the following figures indicates the outside side of the entrance door device 1.

[0010] The door body 3 is attached to the vertical frame 24 of the frame body 2 so as to be able to open and close via at least two hinges 4, 5 arranged at a predetermined interval in the height direction on the hanging side. The entrance door device 1 of this embodiment has three hinges: two top-opening hinges 4, 4 arranged at the upper and middle positions in the height direction, and one bottom-opening hinge 5 arranged at the lower position. The entrance door device 1 of the present disclosure is characterized by the top-opening hinges 4, 4. The two top-opening hinges 4, 4 have the same configuration.

[0011] A door closer 31 (door opening / closing control mechanism) is provided at the upper end of the door body 3 on the hanging side. A link portion of the door closer 31 is connected to the upper frame 21 of the frame body 2. The door closer 31 controls the movement speed of the door body 3. The door closer 31 has a built-in deceleration device (not shown) that applies a force to move the door body 3 from the open position to the closed position, and the opened door body 3 is automatically moved to the closed position by the door closer 31. In addition, the door closer 31 is configured so that the force it applies can be adjusted depending on the position of the door body 3, and the door closer 31 prevents the door body 3 from moving suddenly to the closed position.

[0012] First, referring to FIG. 2, an overview of the top hinge 4 and the bottom hinge 5 will be described. The top hinge 4 is composed of a frame-side hinge member 41 fixed to the inner surface 24a of the vertical frame 24 and a door body-side hinge member 42 fixed to the outer surface 3a of the door body 3 on the hanging side. The frame-side hinge member 41 and the door body-side hinge member 42 are formed from metal plates. The door body-side hinge member 42 is disposed above the frame-side hinge member 41. The door body-side hinge member 42 is connected to the frame-side hinge member 41 so as to be able to open and close by a shaft member 43 that penetrates the cylindrical portion 422. A shaft cover 44 that covers the outside of the cylindrical portion 422 is attached to the door body-side hinge member 42 from above. The shaft cover 44 is formed in a cylindrical shape with a top surface and is open at the bottom. The shaft cover 44 has a slit 441 extending in the vertical direction.

[0013] The lower hinge 5 is composed of a frame-side hinge member 51 attached to the inner surface 24a of the vertical frame 24, and a door-side hinge member 52 attached to the outer surface 3a of the hanging side of the door body 3. The frame-side hinge member 51 and the door-side hinge member 52 are formed from metal plates.

[0014] The frame-side hinge member 51 has a slat portion 511 attached to the inner surface 24a of the vertical frame 24, and a cylindrical portion 512 provided contiguous to the side of the slat portion 511 and arranged to protrude from the vertical frame 24 to the outside. A bearing member 514 is attached to the upper end of the lower shaft hole 513.

[0015] The door body-side hinge member 52 is disposed above the frame-side hinge member 51. The door body-side hinge member 52 has a slat portion 521 attached to the outer surface 3a of the door body 3 on the hanging side, and a cylindrical portion 522 provided contiguous to the side of the slat portion 521 and disposed so as to protrude from the door body 3 toward the outside. The door body-side hinge member 52 is connected to the frame-side hinge member 51 so as to be able to open and close by a shaft member 53 that passes through the cylindrical portion 522. An adjustment screw 523 is provided at the upper end of the cylindrical portion 522 so as to allow fine adjustment of the height of the door body 3. A shaft cover 54 that covers the outside of the cylindrical portion 522 is attached to the door body-side hinge member 52 from above.

[0016] Next, the configuration of the upper hinge 4 will be described in more detail. The frame-side hinge member 41 is formed from a metal plate. As shown in FIGS. 2 to 6, the frame-side hinge member 41 has a rectangular slat portion 411 attached to the inner surface 24a of the vertical frame 24, and a cylindrical portion 412 (frame-side cylindrical portion) that is provided contiguous to the side of the slat portion 411 and protrudes from the vertical frame 24 to the outside of the room. The slat portion 411 has a plurality of screw holes 411a through which screws pass for fastening to the inner surface 24a of the vertical frame 24. The shaft cover 44 is omitted in FIG. 6.

[0017] The cylindrical portion 412 is formed by rolling a plate material extending laterally from the blade portion 411 into a cylindrical shape. The cylindrical portion 412 extends in the vertical direction. As a result, a lower shaft hole 413 (see Figures 5 and 6) that penetrates the frame-side hinge member 41 vertically is formed inside the cylindrical portion 412. The tip of the cylindrically rolled plate material is close to the boundary between the blade portion 411 and the cylindrical portion 412, and forms a recessed groove portion 414 (see Figure 5) that extends vertically within the lower shaft hole 413. A temporary hanging bearing member 6 (bearing member) is attached to the upper end of the lower shaft hole 413. This temporary hanging bearing member 6 will be described further below. The lower end of the lower shaft hole 413 is closed by a screw 415.

[0018] The door body side hinge member 42 is formed from a metal plate. The door body side hinge member 42 has a rectangular slat portion 421 attached to the outer surface 3a of the door body 3 on the hanging side, and a cylindrical portion 422 (door body side cylindrical portion) that is provided contiguous to the side of the slat portion 421 and protrudes from the door body 3 to the outside. The slat portion 421 is provided with a plurality of screw holes 421a through which screws pass to fasten the slat portion 421 to the outer surface 3a of the door body 3.

[0019] The cylindrical portion 422 is formed by rolling a plate material extending laterally from the slat portion 421 into a cylindrical shape. The cylindrical portion 422 extends in the vertical direction. An upper shaft hole 423 (see FIGS. 5 and 6) that passes vertically through the door body-side hinge member 42 is formed inside the cylindrical portion 422. The inner diameter of this upper shaft hole 423 is smaller than the inner diameter of the lower shaft hole 413 of the frame-side hinge member 41 and is approximately equal to the outer diameter of the shaft portion 431 of the shaft member 43. The tip of the cylindrically rolled plate material is close to the boundary between the slat portion 421 and the cylindrical portion 422, and forms a recessed groove portion 424 (see FIG. 5) that extends vertically within the upper shaft hole 423.

[0020] An upper opening 425 (cutout portion) and a lower opening 426 (cutout portion) are provided midway in the vertical direction of the cylindrical portion 422. The upper opening 425 and the lower opening 426 are formed separately above and below the cylindrical portion 422. An upper shaft retaining ring 45 (ring member) is disposed in the upper opening 425, and a lower shaft retaining ring 46 (ring member) is disposed in the lower opening 426. The upper shaft retaining ring 45 and the lower shaft retaining ring 46 are disposed separately above and below the cylindrical portion 422.

[0021] The upper opening 425 is provided near the upper end of the cylindrical portion 422. The upper opening 425 has a width in the vertical direction, and is formed by cutting out the entire circumference of the cylindrical portion 422 in the circumferential direction.

[0022] An upper shaft stop ring 45 made of an annular resin member is inserted into the upper opening 425. The upper shaft stop ring 45 is arranged in the cylindrical portion 422 so as to be immovable in the axial direction.

[0023] The upper shaft retaining ring 45 is formed in a cylindrical shape having a width in the vertical direction. As shown in Fig. 5, the upper shaft retaining ring 45 has a cylindrical outer shape and a cylindrical inner shape.

[0024] As shown in FIG. 7, the upper shaft locking ring 45 has a ring-shaped ring body 450, a protrusion 451 (locking portion) protruding outward, a slit 452, and a recessed portion 453.

[0025] The protrusion 451 protrudes outward from a portion of the circumference of the ring body 450. The protrusion 451 passes through the slit 441 of the shaft cover 44 and protrudes toward the slat portion 421 of the door body side hinge member 42. The protrusion 451 is engaged with the end of the slat portion 421 of the door body side hinge member 42 on the cylindrical portion 422 side.

[0026] 7, the protrusion 451 has a protrusion main body 451a, a first end protrusion 451b, and a second end protrusion 451c. The first end protrusion 451b and the second end protrusion 451c are formed at both ends in the thickness direction of the slat portion 421 of the door body-side hinge member 42. As a result, the first end protrusion 451b and the second end protrusion 451c of the protrusion 451 clamp the end of the slat portion 421 of the door body-side hinge member 42 on the cylindrical portion 422 side in the thickness direction, thereby locking the end of the slat portion 421 on the cylindrical portion 422 side.

[0027] As shown in FIGS. 5 and 7 , the slits 452 are formed by cutting through a portion of the circumference of the ring body 450 in the inward / outward direction and extending in the vertical direction. The upper shaft locking ring 45 can be elastically expanded by the slits 452 provided in a portion of the circumference. In an elastically expanded state, the upper shaft locking ring 45 is inserted into the upper opening 425 from the radially outer side of the cylindrical portion 422 and fitted onto the outer periphery of the shaft portion 431 of the shaft member 43 inserted into the upper shaft hole 423. The upper shaft locking ring 45 is immovable in the axial direction relative to the cylindrical portion 422. The upper shaft locking ring 45 is disposed so as to cross the recessed groove portion 424 of the cylindrical portion 422 and forms a step portion 427 within the recessed groove portion 424 (see FIG. 6 ).

[0028] 7, recessed portion 453 is formed at the connection portion between ring main body 450 and protrusion 451. Recessed portion 453 is formed as a recess that bends toward ring main body 450 so that the connection portion between ring main body 450 and protrusion 451 becomes thinner. By providing recessed portion 453, protrusion 451 becomes more likely to fall toward ring main body 450.

[0029] 3 to 6, the lower opening 426 is provided near the lower end of the cylindrical portion 422. The lower opening 426 has a width in the up-down direction, and is formed by cutting out the entire circumference of the cylindrical portion 422 in the circumferential direction.

[0030] A lower shaft stop ring 46 made of a resin annular member is inserted and disposed in the lower opening 426. The lower shaft stop ring 46 is disposed relative to the cylindrical portion 422 so as to be immovable in the axial direction.

[0031] The lower shaft retaining ring 46 is formed in a tubular shape that has a width in the vertical direction. As shown in FIG. 5, the lower shaft retaining ring 46 has a polygonal tubular outer shape and a cylindrical inner surface. The lower shaft retaining ring 46 and the upper shaft retaining ring 45 are configured to have different external shapes (outer shapes). This prevents the lower shaft retaining ring 46 and the upper shaft retaining ring 45 from being confused during assembly.

[0032] As shown in Figure 8, the lower shaft locking ring 46 has a ring-shaped ring body 460, a protrusion 461 (locking portion) that protrudes outward, and a groove portion 462 that is recessed into the inner circumference and extends in the vertical direction.

[0033] The protrusion 461 protrudes outward from a portion of the circumference of the ring body 460. The protrusion 461 passes through the slit 441 of the shaft cover 44 and protrudes toward the slat portion 421 of the door body side hinge member 42. The protrusion 461 is engaged with the end of the slat portion 421 of the door body side hinge member 42 on the cylindrical portion 422 side.

[0034] 8, the protrusion 461 has a protrusion main body 461a, a first end protrusion 461b, and a second end protrusion 461c. The first end protrusion 461b and the second end protrusion 461c are formed at both ends in the thickness direction of the slat portion 421 of the door body-side hinge member 42. As a result, the protrusion 461 locks the end of the slat portion 421 on the cylindrical portion 422 side by sandwiching the end of the slat portion 421 on the cylindrical portion 422 side in the thickness direction between the first end protrusion 461b and the second end protrusion 461c.

[0035] The shaft member 43 is a rod-shaped body made of metal and constitutes the pivot shaft of the upper hinge 4. As shown in FIGS. 3 to 6, the shaft member 43 has a long shaft portion 431 and a head portion 432 provided at the upper end of the shaft portion 431 and having a larger diameter than the shaft portion 431. The shaft portion 431 is formed to be longer than the length of the upper shaft hole 423 of the door body-side hinge member 42. More specifically, as shown in FIG. 6, when the shaft portion 431 is inserted deepest from the upper end of the upper shaft hole 423, it penetrates the upper shaft hole 423 of the cylindrical portion 422 in the axial direction and protrudes from the lower end of the upper shaft hole 423, and has a length that allows it to be inserted sufficiently into the lower shaft hole 413 of the frame body-side hinge member 41. The lower end 431a of the shaft portion 431 is disposed inside the cylindrical portion 412 of the frame body-side hinge member 41.

[0036] The outer diameter of the shaft portion 431 of the shaft member 43 is slightly smaller than the inner diameter of the cylindrical portion 422 of the door body-side hinge member 42. In this embodiment, in Fig. 6, the outer diameter of the shaft portion 431 of the shaft member 43 is formed to be smaller than the inner diameter of the cylindrical portion 422 of the door body-side hinge member 42 by, for example, 0.3 mm, and a clearance of 0.3 mm is provided.

[0037] 5 and 6, a protrusion 433 that protrudes radially outward is provided on the outer peripheral surface of the shaft portion 431 of the shaft member 43. The protrusion 433 is located midway in the up-down direction of the shaft portion 431. As shown in FIG. 6, the protrusion 433 is located at a position that prevents the shaft portion 431 of the shaft member 43 from slipping downward from the lower end of the upper shaft hole 423 even when the shaft portion 431 is inserted to the deepest position within the upper shaft hole 423.

[0038] As shown in Fig. 5, the shaft portion 431 of the shaft member 43 is inserted into the upper shaft hole 423 with the protrusion 433 aligned with the recessed groove 424 in the upper shaft hole 423. This causes the protrusion 434 to engage with the recessed groove 424 and also with the recessed groove 462 of the lower shaft retaining ring 46 located on the lower side in the up-down direction, allowing the shaft member 43 to slide linearly up and down within the upper shaft hole 423 along the recessed groove 424. However, since the inner diameter of the upper shaft hole 423 is approximately equal to the outer diameter of the shaft portion 431, as shown in Fig. 9, the engagement of the protrusion 433 with the recessed groove 424 prevents the shaft member 43 from rotating about its axis relative to the upper shaft hole 423.

[0039] 6, the inner diameter of the lower shaft hole 413 of the frame-side hinge member 41 is equal to or greater than the outer diameter of the shaft portion 431 including the protrusion 433 of the shaft member 43. Therefore, the shaft member 43, in which the protrusion 433 of the shaft portion 431 is disposed in the lower shaft hole 413, can rotate about its axis relative to the lower shaft hole 413 as the door body-side hinge member 42 rotates due to the opening and closing operation of the door body 3.

[0040] During the operation of hanging the door body 3, the shaft member 43 in the upper shaft hole 423 is slid upward by the operator to the position indicated by the chain line in FIG. 6 . At this time, the shaft portion 431 slides along the inner surface of the upper shaft stop ring 45, and the protrusion 433 abuts from below against the step 427 formed in the recessed groove 424 by the upper shaft stop ring 45. This restricts the upper position of the shaft member 43, and the shaft member 43 is held in the upper position by the frictional force of the upper shaft stop ring 45. At this time, the lower end 431a of the shaft portion 431 protrudes downward from the lower end of the upper shaft hole 423, as shown in FIG. 6 . The protrusion 433 of the shaft portion 431 is positioned at a position that is downwardly removed from the lower end of the upper shaft hole 423. In this state, the protrusion 433 remains engaged with the recessed groove 424 of the upper shaft hole 423, so the shaft member 43 does not rotate around its axis relative to the upper shaft hole 423.

[0041] Next, the temporary hanging bearing member 6 of the frame body side hinge member 41 will be described with reference to Figures 3 to 6. The temporary hanging bearing member 6 is an integrally molded product made of resin material, and is attached to the upper end of the frame body side hinge member 41.

[0042] The temporary hanging bearing member 6 is formed in a cylindrical shape extending in the vertical direction. The temporary hanging bearing member 6 receives the lower end of the shaft member 43 that passes through the door body side hinge member 42. The temporary hanging bearing member 6 has an insertion tube portion 61 that is inserted into the lower shaft hole 413 of the frame body side hinge member 41, a flange portion 62 provided at the upper end of the insertion tube portion 61, and a cylindrical wall portion 63 provided on the upper surface of the flange portion 62.

[0043] 6, the outer diameter of the insertion tube portion 61 is approximately equal to the inner diameter of the lower shaft hole 413. A shaft insertion hole 612 is formed inside the insertion tube portion 61, into which the shaft portion 431 of the shaft member 43 that penetrates the upper shaft hole 423 of the door body side hinge member 42 is inserted. The shaft insertion hole 612 penetrates the insertion tube portion 61. The inner diameter of the shaft insertion hole 612 is slightly larger than the outer diameter of the shaft portion 431. In this embodiment, the diameter of the inner diameter of the shaft insertion hole 612 is formed to be larger than the outer diameter of the shaft portion 431 of the shaft member 43, for example, by 0.3 mm, and a clearance of 0.3 mm is provided.

[0044] As shown by the solid line in FIG. 6 , the axial length of the insertion tube portion 61 is such that the lower end 431a of the shaft portion 431 is positioned above the lower end 61a of the insertion tube portion 61 when the shaft member 43 in the upper shaft hole 423 of the door body-side hinge member 42 is pushed all the way down. In other words, the lower end 61a of the insertion tube portion 61 is positioned below the lower end 431a of the shaft member 43. The entire lower portion of the shaft portion 431 is disposed inside the insertion tube portion 61, and the lower portion of the shaft portion 431 is covered and held by the insertion tube portion 61. In this embodiment, for example, the length L of the insertion tube portion 61 is 30 mm. As a result, the lower portion of the shaft portion 431 is covered and held by the insertion tube portion 61, thereby improving the holding force for holding the lower portion of the shaft portion 431.

[0045] 5, a single ridge 611 extending in the axial direction is provided on the outer peripheral surface of the insertion tube portion 61. The insertion tube portion 61 is inserted into the lower shaft hole 413 with the ridge 611 aligned with the recessed groove 414 in the lower shaft hole 413. As a result, the temporary hanging bearing member 6 is non-rotatably provided on the upper part of the cylindrical portion 422 of the door body side hinge member 42, and is attached to the lower shaft hole 413 so as to be non-rotatable around the axis.

[0046] The flange portion 62 has a diameter larger than the outer diameter of the insertion tube portion 61 and protrudes radially outward from the upper end of the insertion tube portion 61. The flange portion 62 abuts against the upper end surface of the cylindrical portion 412 and holds the insertion tube portion 61 at the upper end of the lower shaft hole 413.

[0047] The cylindrical wall portion 63 is provided in a substantially cylindrical shape to surround the outer periphery of the shaft insertion hole 612 that opens into the upper surface of the flange portion 62. The inside of the cylindrical wall portion 63 is in communication with the shaft insertion hole 612. When the temporary hanging bearing member 6 is attached to the lower shaft hole 413, the cylindrical wall portion 63 protrudes upward from the upper end of the frame-side hinge member 41. The outer diameter of the cylindrical wall portion 63 is smaller than the outer diameter of the flange portion 62 and is substantially equal to the outer diameter of the cylindrical portion 422 of the door body-side hinge member 42.

[0048] 3 to 5, a notch 631 is provided in the cylindrical wall portion 63. The notch 631 has a shape in which a part of the wall of the cylindrical wall portion 63 is removed by a predetermined width from the upper end of the cylindrical wall portion 63 to the upper surface of the flange portion 62. The width of the notch 631 is larger than the outer diameter of the shaft portion 431 of the shaft member 43, and has a width that allows the lower end 431a of the shaft portion 431 to be inserted laterally into the inside of the cylindrical wall portion 63.

[0049] In the upper hinge 4 configured as described above, the upper shaft stop ring 45 is provided with a protrusion 451 that protrudes outward along a portion of its circumferential direction. The protrusion 451 is engaged with the end of the slat portion 421 of the door body side hinge member 42 on the cylindrical portion 422 side. The lower shaft stop ring 46 is provided with a protrusion 461 that protrudes outward along a portion of its circumferential direction. The protrusion 461 is engaged with the end of the slat portion 421 of the door body side hinge member 42 on the cylindrical portion 422 side.

[0050] Therefore, even if the door body 3 equipped with the door closer 31 is opened or closed by suddenly reversing the direction of movement, the protrusion 451 of the upper shaft stop ring 45 engages with the end of the cylindrical portion 422 of the slat portion 421 of the door body side hinge member 42, and the protrusion 461 of the lower shaft stop ring 46 engages with the end of the cylindrical portion 422 of the slat portion 421 of the door body side hinge member 42, so movement of the upper hinge 4 in all directions, left and right, front and back, can be suppressed.

[0051] Next, we will explain the procedure for hanging the door body 3. Prior to the hanging operation, the shaft member 43 of the door body side hinge member 42 of the upper hinge 4 is pulled up to the uppermost position as shown by the chain line in Figure 6.

[0052] First, as shown in Figure 10, the door body side hinge member 52 of the bottom hinge 5 is connected to the frame side hinge member 51 of the bottom hinge 5. More specifically, the lower end of the shaft member 53 is inserted into the bearing member 514 provided at the upper end of the cylindrical portion 512 of the frame side hinge member 51.

[0053] Next, the two top hinges 4 are connected. More specifically, the door body 3 to which the bottom hinge 5 is connected is moved toward the vertical frame 24, using the bottom hinge 5 as a fulcrum, thereby moving the lower end 431a of the shaft portion 431 of the shaft member 43 protruding downward from the door body-side hinge member 42 of the top hinge 4 laterally. The lower end 431a of the shaft portion 431 is passed through the notch 631 (see FIG. 3) of the temporary hanging bearing member 6, thereby inserting the shaft portion 431 into the cylindrical wall portion 63. As a result, the door body-side hinge member 42 is placed on the upper end surface of the temporary hanging bearing member 6, and the temporary hanging of the door body 3 is completed.

[0054] After the temporary hanging is completed, when the door body 3 is opened by a predetermined angle toward the outside of the room, the shaft member 43 rotates in accordance with the rotation of the door body side hinge member 42 that accompanies the opening operation of the door body 3. With the rotation of the shaft member 43, the protrusion 451 of the upper shaft stop ring 45 falls toward the ring body 450 due to the recessed portion 453 (see Figs. 5 and 7), and as a result, the end of the cylindrical portion 422 side of the slat portion 421 of the door body side hinge member 42 fits in and is locked, as shown in Fig. 7.

[0055] Thereafter, the shaft member 43 is pushed all the way down as shown by the solid line in Fig. 6. In this state, the lower end 61a of the insertion tube portion 61 of the temporary hanging bearing member 6 and the lower end 431a of the shaft member 43 are positioned higher than the lower end 61a of the insertion tube portion 61. Thereafter, the height adjustment screw 523 (see Fig. 2) of the lower hinge 5 is turned with a screwdriver or the like to fine-tune the height of the door main body 3.

[0056] The entrance door apparatus 1 according to this embodiment has the following advantages: In other words, in the entrance door apparatus 1 according to this embodiment, the upper hinge 4 comprises: a frame-side hinge member 41 fixed to the frame 2 and having a cylindrical portion 412 extending in the vertical direction; a door-side hinge member 42 fixed to the door body 3 and arranged above the frame-side hinge member 41, having a cylindrical portion 422 extending in the vertical direction and cutout portions (upper opening 425, lower opening 426) formed midway along the vertical direction of the cylindrical portion 422; a shaft member 43 axially penetrating the cylindrical portion 422 of the door-side hinge member 42 and having a lower end portion arranged inside the cylindrical portion 412 of the frame-side hinge member 41; and ring members (upper shaft stop ring 45, lower shaft stop ring 46) arranged in the cutout portions (upper opening 425, lower opening 426) and having projections 451, 461 that are engaged with the door-side hinge member 42. As a result, even if the door body 3 is suddenly opened or closed by reversing, the protrusions 451 of the ring members (upper shaft stop ring 45, lower shaft stop ring 46) are engaged with the end of the cylindrical portion 422 of the slat portion 421 of the door body side hinge member 42, thereby preventing the upper hinge 4 from moving in all directions, left and right, front and back.

[0057] In this embodiment, the lower end 61a of the insertion cylindrical portion 61 of the temporary hanging bearing member 6 is located lower than the lower end 431a of the shaft member 43. As a result, the lower part of the shaft portion 431 is covered and held by the insertion cylindrical portion 61, thereby improving the holding force for holding the lower part of the shaft portion 431.

[0058] In this embodiment, the ring members (upper shaft stop ring 45, lower shaft stop ring 46) are provided at different positions in the vertical direction. As a result, the protrusions 451 are engaged with the end of the cylindrical portion 422 of the slat portion 421 of the door body side hinge member 42 at multiple positions in the vertical direction, which further suppresses movement of the upper hinge 4 in all directions, including left and right, front and rear.

[0059] In this embodiment, the lower shaft retaining ring 46 and the upper shaft retaining ring 45 are configured to have different external shapes (outer shapes), which makes it possible to prevent the lower shaft retaining ring 46 and the upper shaft retaining ring 45 from being mixed up during assembly.

[0060] In this embodiment, the upper shaft locking ring 45 has a slit 452 formed by cutting through a portion of the circumference in the inward and outward direction. The slit 452 provided in the portion of the circumference allows the upper shaft locking ring 45 to elastically expand. This makes it easy to fit the upper shaft locking ring 45 onto the outer periphery of the shaft portion 431 of the shaft member 43 inserted into the upper shaft hole 423 during assembly. This improves the workability during assembly.

[0061] In this embodiment, a recess 453 is formed in the upper shaft stop ring 45 at the connection portion between the ring body 450 and the protrusion 451. The recess 453 makes it easier for the protrusion 451 to be locked to the end of the blade portion 421 of the door body-side hinge member 42 on the cylindrical portion 422 side. This improves the workability during assembly.

[0062] In this embodiment, the door body 3 has a door closer 31 that controls the movement speed of the door body 3. As a result, even if the door body 3 provided with the door closer 31 is opened or closed by suddenly reversing, the protrusions 451 of the ring members (upper shaft stop ring 45, lower shaft stop ring 46) are engaged with the end of the cylindrical portion 422 side of the slat portion 421 of the door body side hinge member 42, so movement of the upper hinge 4 in all directions, left and right, front and rear, can be suppressed.

[0063] While the preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be modified as appropriate. [Explanation of symbols]

[0064] 1 entrance door device, 2 frame body, 3 door body, 4 upper hinge (hinge), 6 temporary hanging bearing member (bearing member), 31 door closer (door opening / closing control mechanism), 41 frame body side hinge member, 42 door body side hinge member, 43 shaft member, 45 upper shaft stop ring (ring member), 46 lower shaft stop ring (ring member), 412 cylindrical portion (frame body side cylindrical portion), 422 cylindrical portion (door body side cylindrical portion), 425 upper opening (cutout portion), 426 lower opening (cutout portion), 450, 460 ring body, 451, 461 protrusion (locking portion), 452 slit

Claims

1. A door frame is provided, and a door body is attached to the frame via a hinge so as to be able to open and close. The hinge is a frame body side hinge member fixed to the frame body and having a frame body side cylindrical portion extending in the vertical direction; a door body side hinge member fixed to the door body, disposed above the frame body side hinge member, and having a door body side cylindrical portion extending in the vertical direction, and a cutout portion formed by cutting out a portion of the door body side cylindrical portion along the circumferential direction in the vertical direction; a shaft member that axially penetrates the door body side cylindrical portion of the door body side hinge member and has a lower end portion that is disposed inside the frame body side cylindrical portion of the frame body side hinge member; a ring member that is disposed in the cutout portion and has a locking portion that locks onto the door body side hinge member.

2. a bearing member provided at an upper end of the frame body-side cylindrical portion of the frame body-side hinge member so as not to rotate, formed in a cylindrical shape extending in the vertical direction, and configured to receive a lower end of the shaft member that is passed through the door main body-side hinge member; The entrance door apparatus according to claim 1 , wherein a lower end of the bearing member is positioned lower than a lower end of the shaft member.

3. The entrance door device according to claim 1 or 2, wherein a plurality of the ring members are provided at vertically spaced intervals.

4. The entrance door apparatus according to claim 3 , wherein at least two of the plurality of ring members have different external shapes.

5. The entrance door device according to any one of claims 1 to 4, wherein the ring member has a slit formed by cutting through a portion of the periphery in an inward / outward direction.

6. The ring member has a ring body and the locking portion that protrudes outward from a portion of the ring body in a circumferential direction, The entrance door device according to any one of claims 1 to 5, wherein a recess is formed at the connection portion between the ring body and the locking portion.

7. The entrance door device according to any one of claims 1 to 6, wherein the door body is provided with a door opening / closing control mechanism that controls the moving speed of the door body.

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