Rotational operation guide device for gear hinge of revolving door
Patent Information
- Application Number
- JP2022511286
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-08-20
- Filing Date
- 2020-08-18
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2040-08-18
AI Technical Summary
Existing revolving door hinges face issues with increased rotational moment between the upper and lower ends, leading to compressive and tensile stress, deformation, frictional noise, and impaired opening/closing performance, especially with larger doors.
A rotation operation guide device for the gear hinge, featuring first and second vertical supports with specific contact surfaces that minimize compressive and tensile stress by guiding stable rotation, using convex and concave contact surfaces to reduce friction and maintain accurate door movement.
The device reduces compressive and tensile stress, minimizes deformation, and decreases frictional noise, ensuring smooth and stable door operation over time, maintaining accurate opening and closing performance.
Smart Images
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Abstract
Description
Technical Field
[0001] The present invention relates to a device that can guide a (relatively) stable rotational operation between a first support bracket fixedly connected to the support frame side of a door frame and a second support bracket fixedly connected to the door side in a gear hinge portion constituting a rotary door. More specifically, in a door hinge in which a gear hinge portion is provided between a first support bracket fixedly connected to the support frame side of a door frame and a second support bracket fixedly connected to the door side, by minimizing the compressive stress generated at the lower end gear hinge portion of the door neutral axis and the tensile stress generated at the upper end gear hinge portion of the door neutral axis due to the rotational moment applied to the gear hinge portion through the second support bracket by the load of the door, not only can the accurate opening and closing performance of the door be ensured and maintained, but also damage to parts due to friction generated in the door hinge and the generation of frictional noise can be minimized. The present invention relates to a rotational operation guide device for a gear hinge portion of a rotary door.
Background Art
[0002] Generally, a rotary door has a structure in which one side surface of a door is fixedly installed within a support frame of a door frame to which the door is attached, and a door hinge portion having a rotation axis is installed within the fixed installation surface to horizontally rotate the door, thereby enabling the door to be opened and closed.
[0003] A wide variety of door hinge designs and structures have been developed and are in use. In the case of the most commonly used pin-type hinge, if the hinge frame supporting the hinge rod does not deform and the rigidity of the fixing means that securely connects the hinge frame to the door or door frame support frame is sufficient, severe vertical displacement due to the vertical load on the door is usually not observed. However, the rigidity to resist the rotational moment on the vertical plane between the top and bottom ends of the door is weak, and when the door is enlarged, the size and rigidity of the hinge and its fixing means (anchor) must also be increased, making it difficult to enlarge the door. Furthermore, there is a limitation in that it is difficult to find a solution that satisfies both the need to meet the needs of consumers who want to slim down the door by minimizing the cross-sectional dimensions of the door (or the cross-sectional dimensions of the door frame that supports the glass window that makes up the door) while enlarging the door, and the need to increase the size of the fixing means (anchor).
[0004] Unlike conventional hinges that use pin-type hinge rods, a gear hinge (gear hinge section) has been developed and is in use, as shown in Figures 1 to 12, to minimize the rotational moment generated between the upper and lower ends of the door on the vertical plane, in response to the trend towards larger doors.
[0005] First, to aid in understanding the present invention, the detailed configuration of such a gear hinge and an example of its use in a revolving door will be described. For details of the description and Figures 1 to 12, please refer to Korean Patent No. 10-1489246 and International Patent Publication WO2016 / 043355.
[0006] In the revolving door 100U shown in Figures 1 to 3, a first support bracket 31 constituting the gear hinge portion 30 is fixedly connected to one side of the vertical frame of the door support frame 10 of the door frame by a screw 30a, and a second support bracket 32 constituting the gear hinge portion 30 is fixedly connected to one side of the door 20 by a screw 30a. Gear portions 31a and 32a are provided on the opposing surfaces of the first support bracket 31 and the second support bracket 32, respectively, that are formed in the vertical direction so that they mesh with each other. A rotating support frame 33 (see Figure 2) is provided between the first support bracket 31 and the second support bracket 32 to support the gear portions 31a and 32a from the rear so that the first support bracket 31 and the second support bracket 32 can fold and rotate while the teeth of the meshing gears change, while the gear portions 31a and 32a of the first support bracket 31 and the second support bracket 32 are meshed with each other.
[0007] On the other hand, the gear hinge section 30 has a planar rotation structure that provides smooth rotation and high resistance to rotational moment, as shown in Figures 4 to 7. As shown in Figure 4, the hinge shaft projections 33a, which are formed by bending from both ends of the rotation support frame 33, are rotatably fitted into the rotation shaft support pockets 31b and 32b formed on the opposite side of the gear sections 31a and 32a that are provided at one end of the first support bracket 31 and the second support bracket 32 and mesh with each other. Also, as shown in Figures 5 and 6, the first support bracket 31 and the second support bracket 32 rotate on their axes in conjunction with each other around the hinge shaft projections 33a at both ends of the rotation support frame 33. However, if, for example, the first support bracket 31 is fixed to the support frame 10 side of the door frame and the second support bracket 32 is fixed to the door 20 side, then, as shown in Figures 5 to 7, the second support bracket 32 will rotate relative to the first support bracket 31 to which it is fixed.
[0008] Furthermore, as shown in Figure 7, the limit of axial rotation of the second support bracket 32 is determined by a structure in which the outer corners of the bent portions at both ends of the rotating support frame 33 are housed in the rotating shaft support pockets 31b and 32b formed on the outer surfaces of the first support bracket 31 and the second support bracket 32, which rotate outward, thereby preventing excessive rotation beyond that point.
[0009] In the structure shown in Figures 4 to 7, the second support bracket 32 is rotatable by approximately 180° relative to the first support bracket 31.
[0010] As shown in Figure 8, the gear portions 31a and 32a formed vertically on both sides of the first support bracket 31 and the second support bracket 32, which rotate and fold in this manner, and the rotating support frame 33 that supports the gear teeth rotation of the gear portions 31a and 32a, provide a structure in which the teeth of the vertically elongated gears mesh with each other, while providing smooth rotation between the first support bracket 31 and the second support bracket 32 on the horizontal plane. This provides structural stability that can adequately counteract the increased rotational moment generated between the upper and lower ends of the door on the vertical plane of the door as the door becomes larger, thereby minimizing the possibility of twisting in the mounting direction and position of the door.
[0011] On the other hand, the first support bracket 31 and the second support bracket 32, which rotate in a meshed state with gear portions 31a and 32a formed vertically on both sides, have a cross-sectional structure in which the second support bracket 32, which is fixedly connected to the door 20 side, can be displaced vertically relative to the first support bracket 31, which is fixedly connected to the support frame 10 side of the door frame, as shown in Figure 9. Therefore, in order to prevent this, openings 31c and 32c are formed in the first support bracket 31 and the second support bracket 32, facing each other, as shown in Figures 10 and 11. Then, as shown in Figures 10 and 11, a vertical locking device 34, which is fitted into the common openings 31c and 32c, is inserted and fixed to the inner surface of the rotating support frame 33 by a fastener 35. One end of such a locking device 34 matches the shape of the inner space of the rotating support frame 33 and is housed there to form an integrated gear hinge portion 30.
[0012] The upper and lower surfaces of the vertical locking device 34, provided to suppress vertical displacement between the first support bracket 31 and the second support bracket 32 and to support the vertical load, rub against the cross sections of the parts where the openings 31c and 32c are formed by the gear portions 31a and 32a of the first support bracket 31 and the second support bracket 32 when the door rotates open and closed, thereby supporting them. Therefore, unlike the first support bracket 31 and the second support bracket 32, which are generally made of metal materials such as aluminum alloy, the vertical locking device 34 is made of a synthetic resin material that can prevent friction noise and has a low coefficient of friction.
[0013] However, in actual use, where the enlarged door 20 is attached to the support frame 10 of the door frame via the gear hinge section 30 described above, as shown in Figure 12, the downward displacement caused by the load W of the door 20 to the second support bracket 32 fixedly connected to the door 20 increases the frictional force at the contact cross-section with the vertical locking device 34, resulting in excessive frictional noise when the door is rotated open and closed. Such frictional noise generated by enlarged doors is difficult to avoid with the material solutions described above alone.
[0014] Furthermore, in the actual situation shown in Figure 13, where the enlarged door 20, whose width Wd has been increased in this way, is attached to the support frame 10 of the door frame via the gear hinge portion 30 described above, and rotated open through the opening and closing operation of the door handle 20h, due to the cantilever support structure, the rotational moment generated between the upper and lower ends of the door on the vertical plane increases when the door 20 is opened. As a result, tensile stress is generated in the gear hinge portion 30 at the upper part of the a-a' neutral axis, which corresponds to the neutral axis (see Figure 15a), and compressive stress is generated in the gear hinge portion 30 at the lower part of the a-a' neutral axis, which corresponds to the neutral axis (see Figure 15b). In particular, in the case of a door 20 including triple glass 20G, the increase in door weight W due to the increase in door width Wd is large, so when the door 20 is rotated open from the closed state (closed) in Figure 14 as shown in Figures 15a and 15b, the amount of deformation due to tensile or compressive stress generated in the gear hinge portion 30 increases. This increasing deformation increases the likelihood of noise generation when opening and closing the door 20 (cross-section in the closed state: Figure 14, cross-section in the open state: Figure 15a (top view), Figure 15b (bottom view)), and if it increases to the permanent deformation amount over time, it becomes difficult to close completely.
[0015] In particular, as shown in the bottom view of Figure 15b, when the door 20 is rotated open, compressive stress is generated in the gear hinge portion 30 below the a-a' neutral axis. If the load on the door increases and the amount of compressive deformation increases, permanent compressive deformation will occur in the gear teeth of the gear portion 31a of the first support bracket 31 and the gear portion 32a of the second support bracket 32 while they are meshing with each other. If this happens, the rotational operating trajectory of the door itself will gradually change over time, and there is also a risk that the operating noise when the door rotates will increase.
[0016] The above explanation focused on examples using gear hinges while describing the problems of conventional door hinges for revolving doors. However, if a structure exists in which excessive compressive or tensile stress can be generated in the components constituting the door hinge of a revolving door due to an increase in the rotational moment generated between the upper and lower ends of the door, then even if the specific configuration of the hinge differs, it can be said that it has essentially the same technical problems as the gear hinge. [Overview of the project] [Problems that the invention aims to solve]
[0017] The present invention aims to solve the problems of the prior art described above, and the technical objective of the present invention is to achieve a door support structure that minimizes the generation of rotational moment between the upper and lower ends of a door, through a simple device, so as to eliminate the phenomenon in which the rotational moment generated between the upper and lower ends of a door, with respect to the horizontal neutral axis of the door hinge on the vertical plane of the door, tends to increase when the door is rotated open and closed due to the load of the door constituting a revolving door.
[0018] In particular, the present invention provides a device that can minimize the compressive stress and compressive deformation that occur between the gear portion on the second support bracket side, which is fixedly connected to the door side to constitute the gear hinge portion of a revolving door, and the gear portion on the first support bracket side, which is fixedly connected to the door support frame side. This device ensures and maintains the accurate opening and closing performance of the door, and also minimizes component damage and friction noise caused by friction in the door hinge. [Means for solving the problem]
[0019] To achieve the above technical objectives, according to the present invention, A device that can guide stable rotational operation between a first support bracket fixedly connected to the support frame side of the door frame and a second support bracket fixedly connected to the door side in a gear hinge portion of a revolving door, To minimize the compressive stress generated at the lower end gear hinge portion below the door neutral axis and the tensile stress generated at the upper end gear hinge portion above the door neutral axis, due to the rotational moment applied to the gear hinge portion through the second support bracket by the load of the door, A fixed first vertical support, which is attached to the lower end of the support frame of the door frame, integrally includes a fixed end fixed to the support frame of the door frame and a first rotating guide body positioned at the center of the rotational operating arc-shaped trajectory of the gear part of the second support bracket of the door, and having a first vertical contact surface corresponding to the rotational operating arc-shaped trajectory of the gear part of the second support bracket of the door; The present invention provides a rotational operating guide device for the gear hinge portion of a revolving door, comprising: a fixed end attached to the lower end of the door and fixed to the door; and a rotating second vertical support integrally including a second rotating guide body which is placed on the rotational operating arc-shaped trajectory of the gear portion of the second support bracket of the door and has a second vertical contact surface which makes line contact with the first vertical contact surface of the first rotating guide body of the first vertical support when the door rotates.
[0020] Here, when the first vertical contact surface provided to the first vertical support is a convex contact surface, the second vertical contact surface provided to the second vertical support is formed as a concave contact surface. The present invention provides a rotational operating guide device for the gear hinge portion of a revolving door, characterized in that when the first vertical contact surface provided to the first vertical support is a concave contact surface, the second vertical contact surface provided to the second vertical support, which is in line contact with it, is formed as a convex contact surface.
[0021] Furthermore, according to a preferred embodiment of the present invention, the change distance of the contact line during line contact on the first vertical contact surface provided to the first vertical support is greater than the change distance of the contact line during line contact on the second vertical contact surface provided to the second vertical support, throughout the rotational opening and closing operation of the door.
[0022] On one hand, the first vertical contact surface provided on the first vertical support tool is provided with all concave contact surface portions and convex contact surface portions, and it is also desirable that the second vertical contact surface provided on the second vertical support tool is provided with corresponding convex contact surface portions and concave contact surface portions.
[0023] Here, it is desirable for the concave contact surface portion of the first vertical contact surface provided on the first vertical support tool to be formed so as to contact the convex contact surface portion of the second vertical contact surface provided on the second vertical support tool in the closed state of the door, which is beneficial for improving the fixing force in the closed state of the door. Also, in the section passing through the inflection point while the contact part changes from the concave contact surface portion to the convex contact surface portion of the first vertical contact surface provided on the first vertical support tool, forming it such that the contact stress of the line contact part decreases due to the increase in the number of contact lines is even more useful for improving the fixing force in the closed state of such a door.
Advantages of the Invention
[0024] The rotational operation guide device for the gear hinge part of the rotary door according to the present invention can achieve the following effects.
[0025] According to the basic configuration of the present invention, in the gear hinge part constituting the rotary door, it is possible to guide the stable rotational operation between the first support bracket fixedly connected to the support frame side of the door frame and the second support bracket fixedly connected to the door side, and by reducing the rotational moment applied to the gear hinge part through the second support bracket due to the load of the door, it is possible to minimize the compressive stress and compressive deformation generated at the lower end gear hinge part of the door neutral axis and the tensile stress and tensile deformation generated at the upper end gear hinge part of the door neutral axis caused by such a rotational moment. Therefore, especially by reducing the amount of compressive deformation generated by the compressive stress at the gear hinge part at the lower end of the horizontal neutral axis of the door, in the state where the gear part of the first support bracket and the gear part of the second support bracket mesh with each other, the permanent compressive deformation in the meshing gear tooth portion can be reduced, the rotational operation trajectory of the door can be maintained for a longer period, and the operation noise can be reduced.
[0026] In particular, according to a preferred embodiment of the present invention, the first vertical contact surface provided on the first vertical support is provided with all concave contact surface portions and convex contact surface portions, and the second vertical contact surface provided on the second vertical support is also provided with all corresponding convex contact surface portions and concave contact surface portions. By the combination of the double convex-concave surfaces, it is possible to prevent the overload state due to single-line contact during the door rotation operation, and a more stable fixing force can be obtained in a state close to the closing of the door.
[0027] Further, according to a more preferred embodiment of the present invention, through the process of the rotational opening and closing operation of the door, the change distance of the contact line where the line contact occurs on the first vertical contact surface provided on the first vertical support is formed to be larger than the change distance of the contact line where the line contact occurs on the second vertical contact surface provided on the second vertical support. Thus, as the door progresses from the closed state to the open state, the rotational operation guide of the door can act more smoothly.
Brief Description of the Drawings
[0028] [Figure 1] It is a perspective view of the installation state of the rotary door, showing an enlarged view of the corner part at the upper end. [Figure 2] It is an exploded perspective view showing the gear hinge part constituting the door hinge of the rotary door in FIG. 1 disassembled. [Figure 3] It is a perspective view of the installation state of the rotary door, showing an enlarged view of the corner part at the lower end. [Figure 4] It is a cross-sectional view showing the operating state of the gear hinge part shown in FIG. 2, showing the state where the second support bracket connected to the door is folded. [Figure 5] It is a cross-sectional view showing the operating state of the gear hinge part shown in FIG. 2. [Figure 6] It is a cross-sectional view showing the operating state of the gear hinge part shown in FIG. 2. [Figure 7]Figure 2 is a cross-sectional view showing the operating state of the gear hinge, illustrating the state in which the second support bracket has rotated so that the door is fully open. [Figure 8] This figure shows the change in the gear meshing state of the gear section due to a change in the rotation angle between the first support bracket and the second support bracket of the gear hinge section. [Figure 9] This diagram shows a state in which a relative vertical displacement occurs between the first support bracket and the second support bracket of the gear hinge. [Figure 10] This is an exploded perspective view of the rear of the gear hinge section. [Figure 11] This is an assembly diagram showing the assembled state of the vertical locking device in the main part K of Figure 10, viewed from the front. [Figure 12] Figure 10 shows the gear hinge portion, illustrating how the gear meshing state changes as the rotation angle between the first support bracket and the second support bracket changes. [Figure 13] This is a front view showing the closed state of a revolving door, with the gear hinge portion provided, but without the rotational operating guide device for the gear hinge portion of the revolving door according to the present invention. [Figure 14] This figure shows a cross-section along line a-a' in Figure 13. [Figure 15a] This is a top view of a cross-section along line a-a' in the open position of the door in Figure 14. [Figure 15b] This is a bottom view of the cross-section along line a-a' in the open state of the door in Figure 14. [Figure 16] This is a partial perspective view of the lower part of a revolving door in the closed position according to a preferred embodiment of the present invention. [Figure 17] This is a magnified view of the gear hinge section (Part H) of the revolving door shown in Figure 16. [Figure 18] This figure shows an enlarged view of the rotational operating guide device portion (Part G) located at the lower part of the gear hinge, and further includes a cross-sectional view showing the coupling state between the first vertical support and the second vertical support when the door is closed. [Figure 19] This is a partial perspective view of the lower part of a revolving door according to a preferred embodiment of the present invention, in a state where the door is open by approximately 45 degrees. [Figure 20] This is a magnified view of the gear hinge section (Part H) of the revolving door shown in Figure 19. [Figure 21] This figure shows an enlarged view of the rotational operating guide device portion (Part G) located at the lower part of the gear hinge, and further includes a cross-sectional view showing the coupling state between the first vertical support and the second vertical support when the door is open at approximately 45°. [Figure 22] This is a partial perspective view of the lower part of a revolving door according to a preferred embodiment of the present invention, in a state where the door is open by approximately 90 degrees. [Figure 23] This is a magnified view of the gear hinge section (Part H) of the revolving door shown in Figure 22. [Figure 24] This figure shows an enlarged view of the rotational operating guide device portion (Part G) located at the lower part of the gear hinge, and further includes a cross-sectional view showing the coupling state between the first vertical support and the second vertical support when the door is open by approximately 90 degrees. [Figure 25] This is an operating state diagram showing the positional change state of a second vertical support, which changes relative to a first vertical support in a fixed position, while the door is rotating and opening / closing within a range of approximately 180° in a door equipped with the rotational operating guide device according to the present invention. [Figure 26] This is a magnified view of the first and second vertical supports shown in Figure 25. [Modes for carrying out the invention]
[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings, so that those with ordinary skill in the art to which the present invention pertains can easily implement it. However, the present invention can be embodied in a variety of different forms and is not limited to the embodiments described below.
[0030] Figure 16, showing a preferred embodiment of the present invention, is a partial perspective view of the lower part of a revolving door in the closed state; Figure 17 is an enlarged view of the gear hinge portion (Part H) of the revolving door shown in Figure 16; and Figure 18 is an enlarged view of the rotational operating guide device portion (Part G) provided at the lower part of the gear hinge portion, further including a cross-sectional view showing the coupling state between the first vertical support and the second vertical support in the closed state of the door.
[0031] Furthermore, for diagrams showing the door open to approximately 45°, refer to Figures 20 to 22, which correspond to Figures 16 to 19, respectively, and for diagrams showing the door open to approximately 90°, refer to Figures 23 to 25, which correspond to Figures 16 to 19 or Figures 20 to 22, respectively.
[0032] First, a preferred embodiment of the rotational operation guide device for a revolving door according to the present invention will be described with reference to the drawings.
[0033] As shown in Figures 17 to 24, in a preferred embodiment of the present invention, A device that can guide stable rotational operation between a first support bracket 1150 fixedly connected to the support frame 1100 side of the door frame and a second support bracket 1250 fixedly connected to the door 1200 side of the gear hinge portion 1300 constituting the revolving door 1000, To minimize the compressive stress generated at the lower end gear hinge portion 1300 below the door neutral axis (a-a' in Figure 13) and the tensile stress generated at the upper end gear hinge portion 1300 above the door neutral axis (a-a') due to the rotational moment applied to the gear hinge portion 1300 through the second support bracket 1250 by the load of the door 1200, A fixed first vertical support member 1510 is attached to the lower end of the support frame 1100 of the door frame and integrally includes a fixed end 1512 fixed to the support frame 1100 of the door frame and a first rotation guide body positioned at the center of the rotational operating arc-shaped trajectory of the gear portion 1250a of the second support bracket 1250 of the door 1200, and having first vertical contact surfaces 1510a and 1510b corresponding to the rotational operating arc-shaped trajectory of the gear portion 1250a of the second support bracket 1250 of the door 1200, The present invention provides a rotational operation guide device 1500 for the gear hinge portion of a revolving door, comprising: a fixed end 1522 attached to the lower end of the door 1200 and fixed to the door 1200; and a rotating second vertical support 1520 integrally including a second rotating guide body which is placed on the rotational operation arc-shaped trajectory of the gear portion 1250a of the second support bracket 1250 of the door 1200 and has second vertical contact surfaces 1520a and 1520b that make line contact with the first vertical contact surfaces 1510a and 1510b of the first rotating guide body of the first vertical support 1510 when the door rotates.
[0034] Here, the rotational operating guide device 1500 of the gear hinge is as shown in Figures 16, 18, 19, 21, 22, 24 and 26, When the first vertical contact surfaces 1510a and 1510b provided to the first vertical support 1510 are convex contact surfaces 1510a, the second vertical contact surfaces 1520a and 1520b provided to the second vertical support 1520 are formed as concave contact surfaces 1520a. When the first vertical contact surfaces 1510a and 1510b provided to the first vertical support 1510 are concave contact surfaces 1510b, the second vertical contact surfaces 1520a and 1520b provided to the second vertical support 1520 that are in line contact with them may be formed as convex contact surfaces 1520b.
[0035] Furthermore, according to a preferred embodiment of the present invention, as shown in Figure 26, which shows an enlarged view of the first and second vertical supports with respect to a rotation range of approximately 180° of the door shown in Figure 25, the change distance (Ro) of the contact line at which line contact occurs on the first vertical contact surfaces 1510a and 1510b provided to the first vertical support 1510 may be greater than the change distance (Lo) of the contact line at which line contact occurs on the second vertical contact surfaces 1520a and 1520b provided to the second vertical support 1520, throughout the rotation opening and closing operation of the door 1200.
[0036] On the other hand, it is desirable that the first vertical contact surfaces 1510a and 1510b provided to the first vertical support 1510 are provided with both a concave contact surface portion 1510b and a convex contact surface portion 1510a, and that the second vertical contact surfaces 1520a and 1520b provided to the second vertical support 1520 are also provided with both a convex contact surface portion 1520b and a concave contact surface portion 1520a, correspondingly.
[0037] Here, it is desirable for the concave contact surface portion 1510b of the first vertical contact surfaces 1510a and 1510b provided to the first vertical support 1510 to be formed to contact the convex contact surface portion 1520b of the second vertical contact surfaces 1520a and 1520b provided to the second vertical support 1520 when the door is closed, in order to improve the fixing force of the door when it is closed. Furthermore, it is even more useful to improve the fixing force of the door when it is closed if the contact portion of the first vertical contact surfaces 1510a and 1510b provided to the first vertical support 1510 changes from the concave contact surface portion 1510b to the convex contact surface portion 1510a and passes through an inflection point, and the contact stress of the line contact portion decreases as the number of contact lines increases. [Explanation of symbols]
[0038] 1000: Revolving door 1100: Door frame support frame 1200: Door 1300: Gear hinge section 1150: First support bracket 1120: Second support bracket 1150a, 1250a: Gear section 1512, 1522: Fixed end 1510a, 1510b: 1st vertical contact surface 1510: 1st vertical support 1520a, 1520b: 2nd vertical contact surface 1520:Second vertical support 1500: Rotary operating guide device
Claims
1. A device for guiding stable rotation between a first support bracket (1150) fixedly connected to a support frame (1100) of a door frame and a second support bracket (1250) fixedly connected to a door (1200) in a gear hinge part (1300) constituting a revolving door (1000), In order to minimize the compressive stress generated in the lower end gear hinge part 1300 below the door neutral axis (a-a') and the tensile stress generated in the upper end gear hinge part 1300 above the door neutral axis (a-a') due to the rotational moment applied to the gear hinge part 1300 through the second support bracket 1250 due to the load of the door 1200, a fixed first vertical support (1510) that is attached to the lower end of the door frame support frame (1100) and integrally includes a fixed end (1512) that is fixed to the door frame support frame (1100) and a first rotation guide body that is placed at the center of the rotational arc locus of the gear part (1250a) of the second support bracket (1250) of the door (1200) and has first vertical contact surfaces (1510a, 1510b) that correspond to the rotational arc locus of the gear part (1250a) of the second support bracket (1250) of the door (1200); a second vertical support (1520) that is attached to the lower end of the door (1200) and integrally includes a fixed end (1522) that is fixed to the door (1200); and a second vertical support (1520) that is attached to the lower end of the door (1200) and integrally includes a second rotary guide body that is placed on the rotary arc-shaped locus of the gear part (1250a) of the second support bracket (1250) of the door (1200) and has second vertical contact surfaces (1520a, 1520b) that come into line contact with the first vertical contact surfaces (1510a, 1510b) of the first rotary guide body of the first vertical support (1510) during rotary operation of the door.
2. When the first vertical contact surface (1510a, 1510b) provided on the first vertical support (1510) is a convex contact surface (1510a), the second vertical contact surface (1520a, 1520b) provided on the second vertical support (1520) is formed as a concave contact surface (1520a); 2. The rotary operation guide device (1500) for a gear hinge portion of a revolving door as described in claim 1, wherein when the first vertical contact surface (1510a, 1510b) provided on the first vertical support (1510) is a concave contact surface (1510b), the second vertical contact surface (1520a, 1520b) provided on the second vertical support (1520) that makes line contact therewith is formed as a convex contact surface (1520b).
3. 3. The rotary operation guide device (1500) of the gear hinge part of a rotary door according to claim 2, characterized in that, during the rotary opening and closing operation of the door (1200), the change distance (Ro) of the contact line where line contact occurs on the first vertical contact surface (1510a, 1510b) provided to the first vertical support (1510) is greater than the change distance (Lo) of the contact line where line contact occurs on the second vertical contact surface (1520a, 1520b) provided to the second vertical support (1520).
4. The rotational operation guide device (1500) for a gear hinge portion of a revolving door as described in claim 2 or 3, characterized in that the first vertical contact surface (1510a, 1510b) provided on the first vertical support (1510) is provided with both a concave contact surface portion (1510b) and a convex contact surface portion (1510a), and the second vertical contact surface (1520a, 1520b) provided on the second vertical support (1520) is also provided with both a corresponding convex contact surface portion (1520b) and a concave contact surface portion (1520a).
5. The concave contact surface portion (1510b) of the first vertical contact surface (1510a, 1510b) provided on the first vertical support (1510) is formed to contact the convex contact surface portion (1520b) of the second vertical contact surface (1520a, 1520b) provided on the second vertical support (1520) in a door closed state, 5. The rotational operation guide device (1500) of a gear hinge part of a revolving door as described in claim 4, characterized in that the contact stress of the line contact part is reduced by increasing the number of contact lines in the section where the contact part changes from the concave contact surface part (1510b) of the first vertical contact surface (1510a, 1510b) provided on the first vertical support (1510) to the convex contact surface part (1510a) and passes through the inflection point.