Entrance door device
The entrance door device addresses the lack of crime prevention and maintainability in conventional door devices by incorporating a hinge system with a temporary suspension member, allowing secure hanging and easy removal within a specific angular range, thus enhancing security and maintainability.
Patent Information
- Application Number
- JP2021157487
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-09-28
- Publication Date
- 2025-06-26
- Estimated Expiration
- 2041-09-28
AI Technical Summary
Conventional indoor door devices are not suitable for entrance doors as they lack crime prevention features and maintainability, with the pin being easily removable even when the door is closed.
An entrance door device with a hinge system that includes a frame-side hinge member, a door-body-side hinge member, a shaft member with a first protrusion, and a temporary suspension member, allowing for secure hanging and easy removal within a specific angular range for maintenance.
The solution achieves both crime prevention by preventing upward removal of the shaft member and maintainability by allowing easy removal within a specific angular range, enhancing security and facilitating maintenance.
Smart Images
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Abstract
Description
Technical Field
[0001] The present disclosure relates to an entrance door device.
Background Art
[0002] Conventionally, a door device in which a door body is attached to a frame body so as to be openable and closable by a hinge has been known (see, for example, Patent Document 1). This door device has a temporarily hanging member at the upper end of the hinge member on the frame body side into which the lower end of a pin passing through the hinge member on the door body side can be inserted laterally. According to this door device, when hanging the door body, alignment work of the pin can be performed while moving the door body laterally with respect to the temporarily hanging portion of the hinge member on the frame body side. Since it is not necessary to drop the door body from above downward, the hanging work can be easily performed.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, the above door device is for indoor use, and the pin can be pulled out upward even when the door body is closed. Therefore, when this door device is applied to an entrance door device, it has problems from the viewpoint of crime prevention. On the other hand, it is necessary to be able to easily remove the door body from the frame body during maintenance work on the door body or the like.
[0005] Therefore, there is a need for an entrance door device that can achieve both crime prevention and maintainability while maintaining the hanging workability.
Means for Solving the Problems
[0006] The entrance door device of the present disclosure includes a frame body and a door body that is attached to the frame body via a hinge so as to be openable and closable. The hinge includes a frame-side hinge member that is fixed to the frame body and has a lower shaft hole, a door-body-side hinge member that is fixed to the door body and has an upper shaft hole, a shaft member that is axially slidably penetrated into the upper shaft hole of the door-body-side hinge member and has a first protrusion near the lower end thereof, and a temporary suspension member that is non-rotatably provided at the upper end of the frame-side hinge member and receives the lower end of the shaft member penetrated through the upper shaft hole of the door-body-side hinge member to temporarily suspend the door body. The temporary suspension member includes a cylindrical wall portion that protrudes upward from the upper end of the frame-side hinge member, a notch portion that is provided in a part of the cylindrical wall portion and allows the lower end of the shaft member penetrated into the upper shaft hole of the door-body-side hinge member to be inserted laterally inside the cylindrical wall portion, and a vertical groove that is provided along the inner surface of the cylindrical wall portion in the vertical direction and allows insertion and removal of the shaft member into and from the lower shaft hole of the frame-side hinge member when the first protrusion of the shaft member engages therewith. The width of the vertical groove along the circumferential direction of the cylindrical wall portion is formed to be larger than the width of the first protrusion along the circumferential direction of the shaft member so that the first protrusion can engage within a predetermined angular range along the opening and closing direction of the door body. It is an entrance door device.
Brief Description of the Drawings
[0007]
Figure 1
Figure 2
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Mode for Carrying Out the Invention
[0008] Hereinafter, embodiments of the entrance door device of the present disclosure will be described in detail with reference to the drawings. FIG. 1 is a view of the entrance door device 1 of the present embodiment as seen from the outdoor side. In FIG. 1, the entrance door device 1 includes a frame body 2 provided at an opening of a building body, and a door body 3 that is attached to the inside of the frame body 2 via a plurality of hinges 4 and 5 so as to be openable and closable.
[0009] The frame body 2 is configured by framing an upper frame 21, a lower frame 22, and left and right vertical frames 23 and 24 in a rectangular shape. The lower frame 22 of the frame body 2 does not necessarily have to be provided. The entrance door device 1 of the present embodiment is an outward-opening type door device that opens the door body 3 toward the outdoor side with respect to the frame body 2. The X direction shown in the following figures indicates the outdoor side of the entrance door device 1.
[0010] The door body 3 is attached to the vertical frame 24 of the frame body 2 via at least two hinges 4 and 5 that are arranged at a predetermined interval in the height direction on the suspension side. The entrance door device 1 of the present embodiment has three hinges, namely, two upper hinges 4 and 4 arranged at the upper and middle positions in the height direction, and one lower hinge 5 arranged at the lower position. The entrance door device 1 of the present disclosure is characterized by the upper hinges 4 and 4. The two upper hinges 4 and 4 have the same configuration.
[0011] First, with reference to FIG. 2, an overview of the upper hinge 4 and the lower hinge 5 will be described. The upper 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 on the suspension side of the door body 3. The door-body-side hinge member 42 is arranged 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 openable and closable by a shaft member 43 passing through a cylindrical portion 422. An axle cover 44 that covers the outside of the cylindrical portion 422 from above is attached to the door-body-side hinge member 42.
[0012] 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-body-side hinge member 52 attached to the outer surface 3a on the suspension side of the door body 3. The door-body-side hinge member 52 is arranged above the frame-side hinge member 51. The door-body-side hinge member 52 is connected to the frame-side hinge member 51 so as to be openable and closable by a shaft member 53 passing through a cylindrical portion 522. An axle cover 54 that covers the outside of the cylindrical portion 522 from above is attached to the door-body-side hinge member 52.
[0013] Next, the structure of the upper hinge 4 will be described in more detail with reference to FIGS. 3, 4, and 5. The frame-side hinge member 41 is formed of a metal plate material. The frame-side hinge member 41 has a rectangular blade plate portion 411 attached to the inner surface 24a of the vertical frame 24, and a cylindrical portion 412 that is continuously provided on the side of the blade plate portion 411 and is disposed so as to protrude outward from the vertical frame 24 to the outside. A plurality of screw holes 411a through which screws for screwing to the inner surface 24a of the vertical frame 24 penetrate are provided in the blade plate portion 411. In FIG. 4, the shaft cover 44 is omitted.
[0014] The cylindrical portion 412 is formed by winding a plate material extending laterally of the blade plate portion 411 into a cylindrical shape. As a result, a lower shaft hole 413 penetrating the frame-side hinge member 41 in the vertical direction is formed inside the cylindrical portion 412. The tip of the plate material wound into a cylindrical shape is close to the boundary portion between the blade plate portion 411 and the cylindrical portion 412, and forms a concave groove portion 414 extending in the vertical direction inside the lower shaft hole 413. A temporary suspension member 6 is attached to the upper end of the lower shaft hole 413. This temporary suspension member 6 will be described later in more detail. The lower end of the lower shaft hole 413 is closed by a dummy star 415.
[0015] The door body-side hinge member 42 is formed of a metal plate material. The door body-side hinge member 42 has a rectangular blade plate portion 421 attached to the outer surface 3a on the hanging side of the door body 3, and a cylindrical portion 422 that is continuously provided on the side of the blade plate portion 421 and is disposed so as to protrude outward from the door body 3 to the outside. A plurality of screw holes 421a through which screws for screwing to the outer surface 3a of the door body 3 penetrate are provided in the blade plate portion 421.
[0016] The cylindrical portion 422 is formed by winding a plate material extending laterally of the blade plate portion 421 into a cylindrical shape. An upper shaft hole 423 penetrating the door body-side hinge member 42 in the vertical direction 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 substantially equal to the outer diameter of the shaft portion 431 of the shaft member 43. The tip of the plate material wound into a cylindrical shape is close to the boundary portion between the blade plate portion 421 and the cylindrical portion 422, and forms a concave groove portion 424 extending in the vertical direction inside the upper shaft hole 423.
[0017] In the vicinity of the upper end of the cylindrical portion 422, an opening 425 is provided which is formed by cutting out a part of the cylindrical portion 422 in a cylindrical shape over the entire circumference. An axial stop ring 426 made of a resin annular member is inserted into the opening 425. The inner diameter of the axial stop ring 426 is the same as or slightly smaller than the outer diameter of the shaft portion 431 of the shaft member 43. The axial stop ring 426 can be elastically expanded by a cut portion 426a provided on a part of the outer circumference. The axial stop ring 426 is inserted into the opening 425 from the radially outer side of the cylindrical portion 422 in an elastically expanded state, and is fitted onto the outer circumference of the shaft portion 431 of the shaft member 43 inserted into the upper shaft hole 423. The axial stop ring 426 is immovable in the axial direction with respect to the cylindrical portion 422. The axial stop ring 426 is arranged so as to cross the concave groove portion 424 of the cylindrical portion 422, and a step portion 427 is formed in the concave groove portion 424 (see FIG. 4).
[0018] The shaft member 43 is a metal rod-shaped body and constitutes the rotation shaft of the upper fitting 4. 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 fitting member 42. Specifically, 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 and protrudes from the lower end of the upper shaft hole 423, and has a length that can be inserted into the lower shaft hole 413 of the frame body side fitting member 41 with sufficient length.
[0019] On the outer peripheral surface of the shaft portion 431 of the shaft member 43, a first protrusion 433 and a second protrusion 434 that protrude radially outward are provided respectively. The first protrusion 433 and the second protrusion 434 are arranged on the same straight line along the axial direction of the shaft portion 431. The first protrusion 433 is arranged near the lower end 431a of the shaft portion 431. The second protrusion 434 is arranged at an interval above the first protrusion 433. Specifically, as shown by the solid line in FIG. 4, the second protrusion 434 is provided at a position where it does not come out downward from the lower end of the upper shaft hole 423 even when the shaft portion 431 of the shaft member 43 is inserted deepest into the upper shaft hole 423. The protruding heights, axial lengths, and circumferential widths of the first protrusion 433 and the second protrusion 434 are the same.
[0020] As shown in FIG. 5, the shaft portion 431 of the shaft member 43 is inserted into the upper shaft hole 423 with the first protrusion 433 and the second protrusion 434 aligned with the concave groove portion 424 in the upper shaft hole 423. Thereby, the first protrusion 433 and the second protrusion 434 engage with the concave groove portion 424, and the shaft member 43 can slide linearly up and down in the upper shaft hole 423 along the concave groove portion 424. On the other hand, since the inner diameter of the upper shaft hole 423 is substantially equal to the outer diameter of the shaft portion 431, when the first protrusion 433 and the second protrusion 434 engage with the concave groove portion 424, the shaft member 43 cannot rotate around the axis with respect to the upper shaft hole 423.
[0021] The inner diameter of the lower shaft hole 413 of the frame-side hinge member 41 is greater than or equal to the outer diameter of the shaft portion 431 including the first protrusion 433 of the shaft member 43. Therefore, the shaft member 43 with the first protrusion 433 of the shaft portion 431 arranged in the lower shaft hole 413 can rotate around the axis with respect 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.
[0022] When the door body 3 is being lifted in, the shaft member 43 in the upper shaft hole 423 is slid upward by the operator's operation to the position indicated by the dashed line in Fig. 4. At this time, the shaft portion 431 slides on the inner surface of the shaft retaining ring 426, and the second protrusion 434 abuts against the step portion 427 formed in the concave groove portion 424 by the shaft retaining ring 426 from below. Thereby, the upper position of the shaft member 43 is regulated, and the shaft member 43 is held in the upper position by the frictional force of the shaft retaining ring 426. At this time, the lower end 431a of the shaft portion 431 protrudes downward by a length L from the lower end of the upper shaft hole 423 as shown in Fig. 4. The first protrusion 433 of the shaft portion 431 is disposed at a position where it has come out downward from the lower end of the upper shaft hole 423. In this state, since the upper second protrusion 434 remains engaged with the concave groove portion 424 of the upper shaft hole 423, the shaft member 43 does not rotate around the axis with respect to the upper shaft hole 423.
[0023] Next, the temporary suspension member 6 of the frame-side hinge member 41 will be described with reference to Figs. 3, 4, 6 to 8. The temporary suspension member 6 is an integrally molded product formed of a resin material and is attached to the upper end of the frame-side hinge member 41.
[0024] The temporary suspension member 6 has an insertion cylinder portion 61 inserted into the lower shaft hole 413 of the frame-side hinge member 41, a flange portion 62 provided at the upper end of the insertion cylinder portion 61, and a cylindrical wall portion 63 provided on the upper surface of the flange portion 62.
[0025] The outer diameter of the insertion cylinder portion 61 is substantially equal to the inner diameter of the lower shaft hole 413. An axial insertion hole 612 into which the shaft portion 431 of the shaft member 43 passing through the upper shaft hole 423 of the door body-side hinge member 42 is inserted is formed inside the insertion cylinder portion 61. The axial insertion hole 612 penetrates the insertion cylinder portion 61. The inner diameter of the axial insertion hole 612 is substantially equal to the outer diameter of the shaft portion 431.
[0026] As shown by the solid line in Fig. 4, the axial length of the insertion cylinder portion 61 is such that when the shaft member 43 in the upper shaft hole 423 of the door body side butt member 42 is pushed in most downward, the shaft portion 431 penetrates the shaft insertion hole 612 and has a length that can project into the lower shaft hole 413 below the lower end of the insertion cylinder portion 61. When the shaft member 43 is pushed in most downward, the first protrusion 433 of the shaft portion 431 is disposed in the lower shaft hole 413 below the insertion cylinder portion 61.
[0027] One ridge portion 611 extending in the axial direction is provided on the outer peripheral surface of the insertion cylinder portion 61. The insertion cylinder portion 61 is inserted into the lower shaft hole 413 with the ridge portion 611 aligned with the groove portion 414 in the lower shaft hole 413. Thereby, the temporary suspension member 6 is attached to the lower shaft hole 413 so as not to be rotatable about the axis.
[0028] The flange portion 62 has a larger diameter than the outer diameter of the insertion cylinder portion 61 and projects radially outward at the upper end of the insertion cylinder portion 61. The flange portion 62 abuts on the upper end surface of the cylindrical portion 412 and holds the insertion cylinder portion 61 at the upper end of the lower shaft hole 413.
[0029] The cylindrical wall portion 63 is provided so as to surround the outer periphery of the shaft insertion hole 612 opening on the upper surface of the flange portion 62 in a substantially cylindrical shape. The inside of the cylindrical wall portion 63 communicates with the shaft insertion hole 612. When the temporary suspension member 6 is attached to the lower shaft hole 413, the cylindrical wall portion 63 projects upward from the upper end of the frame body side butt 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 butt member 42. The protruding height of the cylindrical wall portion 63 is the same as or slightly higher than the length L that the lower end 431a of the shaft portion 431 of the shaft member 43 that has slid most upward projects downward from the upper shaft hole 423, as shown by the chain line in Fig. 4.
[0030] The cylindrical wall portion 63 is provided with a notch portion 631. The notch portion 631 has a shape in which a part of the wall portion of the cylindrical wall portion 63 is removed with a predetermined width from the upper end of the cylindrical wall portion 63 to the upper surface of the flange portion 62. As shown in FIG. 7, the width W1 of the notch portion 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 of the shaft portion 431 to be inserted laterally from the outside into the inside of the cylindrical wall portion 63. The notch portion 631 is provided at a position facing the indoor side in the cylindrical wall portion 63 in a state where the temporary suspension member 6 is attached to the frame side hinge member 41. Therefore, the insertion direction of the lower end 431a of the shaft portion 431 is substantially parallel to the inner surface 24a of the vertical frame 24 from the indoor side toward the outdoor side.
[0031] A vertical groove 632 is provided on the inner surface 63a of the cylindrical wall portion 63. The vertical groove 632 penetrates axially from the inner surface 63a of the cylindrical wall portion 63, through the inside of the flange portion 62, to the inner surface of the insertion cylinder portion 61. That is, the vertical groove 632 extends along the vertical direction over the entire temporary suspension member 6 from the upper end to the lower end of the temporary suspension member 6.
[0032] The vertical groove 632 has a width and depth capable of accommodating and engaging the first protrusion 433 of the shaft portion 431. Since the inner diameter of the shaft insertion hole 612 is substantially equal to the outer diameter of the shaft portion 431, when the shaft member 43 of the door body side hinge member 42 is inserted into the lower shaft hole 413 as shown by the solid line in FIG. 4 and removed from the lower shaft hole 413 in a state where the lower shaft hole 413 of the frame side hinge member 41 and the upper shaft hole 423 of the door body side hinge member 42 are coaxially arranged, the first protrusion 433 of the shaft portion 431 can only pass through the inside of the vertical groove 632. That is, the vertical groove 632 allows the shaft member 43 to be inserted into and removed from the shaft insertion hole 612 and the lower shaft hole 413 of the temporary suspension member 6 only when the first protrusion 433 of the shaft portion 431 is engaged.
[0033] As shown in FIG. 7, the width W2 of the longitudinal groove 632 along the circumferential direction of the cylindrical wall portion 63 is formed to be larger than the width of the first protrusion 433 along the circumferential direction of the shaft portion 431 so that the first protrusion 433 of the shaft portion 431 can be engaged within a predetermined angular range along the opening and closing direction of the door body 3. The width W2 of the longitudinal groove 632 in the present embodiment is formed to have a width of an angle of about 20° in the circumferential direction with respect to the center of the shaft insertion hole 612.
[0034] As shown in FIG. 7, the longitudinal groove 632 is disposed in the vicinity of the notch portion 631 on the inner surface 63a of the cylindrical wall portion 63 and on the side far from the inner surface 24a of the vertical frame 24 in a state where the frame-side hinge member 41 is attached to the inner surface 24a of the vertical frame 24. Specifically, in FIG. 8, when the closed state of the door body 3 is set to 0°, the longitudinal groove 632 is disposed at positions where the angular ranges θ1 and θ2 of the door body 3 are 70° and 90°, respectively. That is, the range in which the first protrusion 433 can be engaged with the longitudinal groove 632 is limited when the door body 3 is in the angular range of 70° or more and 90° or less.
[0035] However, the range in which the first protrusion 433 can be engaged with the longitudinal groove 632 is not limited to the case where the door body 3 is in the angular range of 70° or more and 90° or less as in the present embodiment. For example, by forming the width W2 of the longitudinal groove 632 to have a width of an angle of 20° or more and 100° or less, the longitudinal groove 632 and the first protrusion 433 may be configured to be engageable when the door body 3 is in the angular range of 50° or more and 150° or less.
[0036] As shown in FIGS. 6 to 8, a transverse groove 633 extending horizontally along the inner surface 63a from the notch portion 631 is provided on the inner surface 63a on the upper end side of the cylindrical wall portion 63. The transverse groove 633 is provided from the end portion 631a of the notch portion 613 on the side far from the inner surface 24a of the vertical frame 24 to the longitudinal groove 632. The transverse groove 633 is open upward in the cylindrical wall portion 63 and outward of the end portion 631a of the notch portion 613.
[0037] The transverse groove 633 prevents interference with the first protrusion 433 protruding from the shaft portion 431 when the door body 3 is lifted, as shown in FIG. 8. That is, when the shaft portion 431 inserted inside the cylindrical wall portion 63 rotates due to the opening and closing operation of the door body 3, the transverse groove 633 can smoothly pass the first protrusion 433 to the longitudinal groove 632 without hooking the first protrusion 433 on the cylindrical wall portion 63. When the door body 3 is further operated in the opening direction, the first protrusion 433 abuts against the groove inner wall surface 632a that extends radially in the longitudinal groove 632 and is far from the end portion 631a of the notch portion 613 in the longitudinal groove 632. Thereby, since the operator can perceive that the first protrusion 433 is disposed in the longitudinal groove 632, the first protrusion 433 can be easily disposed at the engagement position with the longitudinal groove 632.
[0038] Next, the lower hinge 5 will be described in more detail with reference to FIGS. 9 and 10. The frame-side hinge member 51 is formed of a metal plate material. The frame-side hinge member 51 has a blade plate portion 511 attached to the inner surface 24a of the vertical frame 24, and a cylindrical portion 512 that is continuously provided on the side of the blade plate portion 511 and protrudes from the vertical frame 24 to the outdoor side.
[0039] The blade plate portion 511 is formed in a rectangular shape. The blade plate portion 511 is provided with a plurality of screw holes 511a through which screws for screwing to the inner surface 24a of the vertical frame 24 penetrate.
[0040] The cylindrical portion 512 is formed by winding a plate material extending to the side of the blade plate portion 511 into a cylindrical shape. An upper shaft hole 513 that penetrates the frame-side hinge member 51 in the vertical direction is formed inside the cylindrical portion 512.
[0041] A bearing member 514 is attached to the upper end of the lower shaft hole 513. A shaft insertion hole 514a into which the lower end of a shaft member 53 provided on the door body side hinge member 52 is inserted is formed in the bearing member 514. The shaft insertion hole 514a communicates with the lower shaft hole 513. A washer 515 that closes the lower shaft hole 513 is attached to the lower end of the lower shaft hole 513.
[0042] The door body side hinge member 52 is formed of a metal plate material. The door body side hinge member 52 has a vane plate portion 521 attached to the outer surface 3a on the hanging side of the door body 3, and a cylindrical portion 522 that is continuously provided on the side of the vane plate portion 521 and is arranged to protrude from the door body 3 to the outdoor side.
[0043] The vane plate portion 521 is formed in a rectangular shape. The vane plate portion 521 is provided with a plurality of screw holes 521a through which screws for screwing to the inner surface 24a of the vertical frame 24 penetrate.
[0044] The cylindrical portion 522 is formed by winding a plate material extending to the side of the vane plate portion 521 into a cylindrical shape. An upper shaft hole 523 that penetrates the door body side hinge member 52 in the vertical direction is formed inside the cylindrical portion 522.
[0045] Near the upper end of the cylindrical portion 522, an opening portion 524 that is cut out in a cylindrical shape over the entire circumference of the cylindrical portion 522 is provided. The opening portion 524 communicates with the upper shaft hole 523. A substantially disc-shaped shaft adjustment member 525 is inserted into the opening portion 524. A female screw hole 525a is formed to penetrate through the center of the shaft adjustment member 525. A height adjustment screw 526 is screwed into the female screw hole 525a from above the upper shaft hole 523 of the cylindrical portion 522.
[0046] The shaft member 53 is a metal rod-shaped body and constitutes a rotation shaft when the lower hinge 5 is opened and closed. A flange portion 531 that protrudes radially outward is provided in the middle of the shaft member 53. The flange portion 531 abuts against the upper end surface of the bearing member 514 when the shaft member 53 is inserted into the shaft insertion hole 514a of the bearing member 514 of the frame side hinge member 51.
[0047] The upper end portion 53a of the shaft member 53 is formed with a slightly smaller diameter. A shaft fixing member 527 that is externally fitted from above is attached to the upper end portion 53a of the shaft member 53. The outer peripheral surface of the upper end portion 53a of the shaft member 53 is subjected to knurling to fix the shaft fixing member 527 in a non-rotatable manner. The lower end of the height adjustment screw 526 screwed into the female screw hole 525a of the shaft adjustment member 525 abuts against the upper end surface 527a of the shaft fixing member 527.
[0048] Next, the procedure for lifting the door body 3 will be described in detail. First, prior to the lifting operation, the shaft member 43 of the door body side joint member 42 of the upper joint 4 is pulled up to the uppermost position and arranged in the upper position as shown by the chain line in FIG. 4. The lower end 431a of the shaft portion 431 protrudes downward by a length L from the upper shaft hole 423 of the door body side joint member 42.
[0049] First, as shown in FIG. 11, the door body side joint member 52 of the lower joint 5 is connected to the frame side joint member 51 of the lower joint 5. Specifically, the lower end portion of the shaft member 53 is inserted into the shaft insertion hole 514a of the bearing member 514 provided at the upper end of the frame side joint member 51 as shown in FIG. 2.
[0050] Subsequently, the two upper joints 4 are connected. Specifically, the door body 3 to which the lower joint 5 is connected is moved toward the vertical frame 24 with the lower joint 5 as a fulcrum as shown in FIG. 11, so that the lower end 431a of the shaft portion 431 of the shaft member 43 protruding downward from the door body side joint member 42 of the upper joint 4 is moved laterally. By passing the lower end 431a of the shaft portion 431 through the notch portion 631 of the temporary suspension member 6, the shaft portion 431 is inserted inside the cylindrical wall portion 63 as shown in FIG. 12. As a result, the cylindrical portion 422 of the door body side joint member 42 is placed on the upper end surface 63b of the cylindrical wall portion 63 of the temporary suspension member 6, and the temporary suspension of the door body 3 is completed.
[0051] After the temporary suspension is completed, when the door body 3 is opened by a predetermined angle toward the outdoor side, the shaft member 43 rotates as the door body side hinge member 42 rotates with the opening operation of the door body 3. Due to the rotation of the shaft member 43, the first protrusion 433 of the shaft portion 431 enters from the end portion 631a of the notch portion 631 into the lateral groove 633 of the temporary suspension member 6, passes through the lateral groove 633, and is guided into the vertical groove 632. When the door body 3 is further moved in the opening direction, the first protrusion 433 abuts against the groove inner wall surface 632a of the vertical groove 632, and it is perceived that the first protrusion 433 is accommodated in the vertical groove 632. Since the angle of the door body 3 in the opening direction at this time is in the range of 70° or more and 90° or less with respect to the closed state, the alignment between the first protrusion 433 and the vertical groove 632 is easy.
[0052] Thereafter, the shaft member 43 is pushed in to the lowest position as shown by the solid line in FIG. 4. The shaft member 43 slides downward along the vertical groove 632 with the first protrusion 433 of the shaft portion 431 engaged with the vertical groove 632 of the temporary suspension member 6. As a result, the first protrusion 433 comes out of the insertion cylinder portion 61 of the temporary suspension member 6 and is disposed below the insertion cylinder portion 61. Thereby, the door body 3 is completely suspended in the frame body 2. Thereafter, as shown in FIG. 10, the height of the door body 3 is finely adjusted by rotating the height adjustment screw 526 of the lower hinge 5 with a driver or the like.
[0053] When suspending the door body 3 by the above operations, it is only necessary to substantially move the door body 3 horizontally, and there is no need to greatly lift the door body 3 upward. As shown in FIG. 13, since the amount of movement Δh in the height direction during the suspension operation of the door body 3 is extremely small, for example, even if a frame member 100 or the like that greatly protrudes outward toward the outdoor side is disposed above the frame body 2, the door body 3 can be suspended in the frame body 2.
[0054] After the door body 3 is completely lifted in, when the door body 3 is closed, the first protrusion 433 moves away from the position of the longitudinal groove 632 due to the rotation of the shaft member 43 and is arranged at a position facing the indoor side as shown by the dashed-dotted line in FIG. 8. Therefore, even if an attempt is made to pull out the shaft member 43 upward, the first protrusion 433 is caught by the lower end of the insertion cylinder portion 61 of the temporary suspension member 6 and cannot move. Thus, when the door body 3 is at an angle outside the range of 70° or more and 90° or less, for example, when the door body 3 is in a closed state, the shaft member 43 cannot be slid upward, enhancing the security performance.
[0055] On the other hand, during the maintenance of the door body 3, when the door body 3 is opened within the angle range of 70° or more and 90° or less, the first protrusion 433 and the longitudinal groove 632 can be engaged, and the shaft member 43 can be slid upward. Since the shaft member 43 can be removed from the lower shaft hole 413 of the frame side hinge member 41 within a predetermined angle range of the door body 3, the maintenance work can be easily performed.
[0056] As described above, the entrance door device 1 according to the present embodiment has the following effects. That is, the entrance door device 1 of the present embodiment includes a frame body 2 and a door body 3 that is provided on the frame body 2 so as to be openable and closable via an upper hinge 4 and a lower hinge 5. The upper hinge 4 includes a frame-side hinge member 41 fixed to the frame body 2 and having a lower shaft hole 413, a door-body-side hinge member 42 fixed to the door body 3 and having an upper shaft hole 423, a shaft member 43 that is axially slidably penetrated into the upper shaft hole 423 of the door-body-side hinge member 42 and has a first protrusion 433 near the lower end 413a, and a temporary suspension member 6 that is non-rotatably provided at the upper end of the frame-side hinge member 41 and receives the lower end 431a of the shaft member 43 penetrated into the upper shaft hole 423 of the door-body-side hinge member 42 to temporarily suspend the door body 3. The temporary suspension member 6 includes a cylindrical wall portion 63 that protrudes upward from the upper end of the frame-side hinge member 41, a notch portion 631 provided in a part of the cylindrical wall portion 63 and allowing the lower end 431a of the shaft member 43 penetrated into the upper shaft hole 423 of the door-body-side hinge member 42 to be inserted laterally from the inside of the cylindrical wall portion 63, and a vertical groove 632 provided along the inner surface 63a of the cylindrical wall portion 63 in the vertical direction and allowing insertion and removal of the shaft member 43 with respect to the lower shaft hole 413 of the frame-side hinge member 41 when the first protrusion 433 of the shaft member 43 engages. The width W2 of the vertical groove 632 along the circumferential direction of the cylindrical wall portion 63 is formed larger than the width of the first protrusion 433 along the circumferential direction of the shaft member 43 so that the first protrusion 433 can engage within a predetermined angular range θ1 or more and θ2 or less along the opening and closing direction of the door body 3. According to this, when the door body 3 is within a predetermined angular range, the shaft member 43 can be removed from the lower shaft hole 413 of the frame-side hinge member 41, so that it is possible to achieve both crime prevention and maintainability while maintaining the suspension workability by the temporary suspension member 6.
[0057] In the present embodiment, the predetermined angular range can be set to a range of 70° or more and 90° or less when the closed state of the door body 3 is set to 0°. According to this, by opening the door body 3 within an angular range of 70° or more and 90° or less, the shaft member 43 can be slid upward, so that it is possible to enhance crime prevention and the maintainability of the door body 3.
[0058] In this embodiment, a longitudinally extending concave groove portion 424 is provided in the upper shaft hole 423 of the door body side hinge member 42. The shaft member 43 has a second protrusion 434 that engages with the concave groove portion 424 at a position above the first protrusion 433 and is restricted from rotating within the upper shaft hole 423. According to this, the shaft member 43 can be easily arranged so as not to rotate with respect to the upper shaft hole 423. When the shaft member 43 slides, the second protrusion 434 moves along the concave groove portion 424, so that the shaft member 43 can slide smoothly.
[0059] In this embodiment, a step portion 427 is provided in the concave groove portion 424 of the door body side hinge member 42 to abut against the second protrusion 434 of the shaft member 43 that has slid upward, thereby restricting the upper position of the shaft member 43. According to this, the upper position of the shaft member 43 can be easily restricted, and the shaft member 43 is prevented from coming out of the upper shaft hole 423.
[0060] In this embodiment, the temporary suspension member 6 is non-rotatably inserted into the lower shaft hole 413 of the frame side hinge member 41 and has an insertion cylinder portion 61 that communicates with the inside of the cylindrical wall portion 63 and through which the shaft member 43 can penetrate. The longitudinal groove 632 is provided so as to penetrate from the inner surface 63a of the cylindrical wall portion 63 to the inner surface of the insertion cylinder portion 61. The first protrusion 433 of the shaft member 43 inserted into the lower shaft hole 413 of the frame side hinge member 41 is disposed below the insertion cylinder portion 61. According to this, as long as the first protrusion 433 and the longitudinal groove 632 are not engaged, even if the door body 3 is lifted upward, the first protrusion 433 is caught by the lower end of the insertion cylinder portion 61, so that the shaft member 43 cannot be removed from the lower shaft hole 413 of the frame side hinge member 41. Therefore, the security of the entrance door device 1 can be further enhanced.
[0061] In this embodiment, the cylindrical wall portion 63 is provided on the inner surface 63a of the upper end portion from the notch portion 631 to the longitudinal groove 632, and has a transverse groove 633 through which the first protrusion 433 of the shaft member 43 inserted inside the cylindrical wall portion 63 can pass toward the longitudinal groove 632. According to this, when the door body 3 is hoisted in, interference between the first protrusion 433 of the shaft member 43 and the cylindrical wall portion 63 is prevented. After the temporary hoisting is completed, the first protrusion 433 can pass through the transverse groove 633 and be guided into the longitudinal groove 632 by the rotation of the shaft member 43 accompanying the opening operation of the door body 3. Further, when the door body 3 is moved in the opening direction, since the first protrusion 433 abuts against the groove inner wall surface 632a of the longitudinal groove 632, the operator can be made aware that the first protrusion 433 is accommodated in the longitudinal groove 632. Therefore, the alignment between the first protrusion 433 and the longitudinal groove 632 can be easily performed.
Explanation of Signs
[0062] 1 Entrance door device, 2 Frame body, 3 Door body, 4 Upper hinge, 41 Frame side hinge member, 413 Lower shaft hole, 413a Lower end of shaft member, 42 Door body side hinge member, 423 Upper shaft hole, 424 Concave groove portion, 427 Step portion, 43 Shaft member, 433 First protrusion, 434 Second protrusion, 6 Temporary hoisting member, 61 Insertion cylinder portion, 63 Cylindrical wall portion, 63a Inner surface of cylindrical wall portion, 631 Notch portion, 632 Longitudinal groove, 633 Transverse groove, W2 Width of longitudinal groove
Claims
1. A frame body, and a door body attached to the frame body so as to be openable and closable via a hinge, wherein the hinge includes: a frame-side hinge member fixed to the frame body and having a lower shaft hole; a door-body-side hinge member fixed to the door body and having an upper shaft hole; a shaft member slidably penetrating axially in the upper shaft hole of the door-body-side hinge member and having a first protrusion near its lower end; a temporary suspension member provided immovably at the upper end of the frame-side hinge member and receiving the lower end of the shaft member penetrating the upper shaft hole of the door-body-side hinge member to temporarily suspend the door body, wherein the temporary suspension member includes: a cylindrical wall portion protruding upward from the upper end of the frame-side hinge member; a notch portion provided in a part of the cylindrical wall portion and allowing the lower end of the shaft member penetrating the upper shaft hole of the door-body-side hinge member to be inserted laterally inside the cylindrical wall portion; a vertical groove provided along the inner surface of the cylindrical wall portion in the longitudinal direction and allowing insertion and removal of the shaft member into and from the lower shaft hole of the frame-side hinge member when the first protrusion of the shaft member engages therewith, wherein the width of the vertical groove along the circumferential direction of the cylindrical wall portion is formed larger than the width of the first protrusion along the circumferential direction of the shaft member so that the first protrusion can engage within a predetermined angular range along the opening and closing direction of the door body. The front door device.
2. The front door device according to claim 1, wherein the predetermined angular range is in the range of 70° or more and 90° or less when the closed state of the door body is set to 0°.
3. A concave groove portion extending in the longitudinal direction is provided in the upper shaft hole of the door-body-side hinge member, wherein the shaft member has a second protrusion that is engaged with the concave groove portion at a position above the first protrusion and is restricted from rotating in the upper shaft hole. The front door device according to claim 1 or 2.
4. The front door device according to claim 3, wherein a step portion is provided in the concave groove portion of the door-body-side hinge member to abut against the second protrusion of the shaft member that has slid upward to restrict the upper position of the shaft member.
5. The temporary suspension member is inserted non-rotatably into the lower shaft hole of the frame-side hinge member and has an insertion cylinder portion that communicates with the inside of the cylindrical wall portion and through which the shaft member can penetrate, wherein the vertical groove is provided to penetrate from the inner surface of the cylindrical wall portion to the inner surface of the insertion cylinder portion. The first protrusion of the shaft member inserted into the lower shaft hole of the frame side hinge member is disposed below the insertion cylinder portion. The entrance door device according to any one of claims 1 to 4.
6. The cylindrical wall portion is provided on the inner surface of the upper end portion from the notch portion to the longitudinal groove, and has a transverse groove through which the first protrusion of the shaft member inserted inside the cylindrical wall portion can pass toward the longitudinal groove. The entrance door device according to any one of claims 1 to 5.
Citation Information
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