JP3733230B2 - Revolving door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a revolving door that can be opened and closed by turning a semi-cylindrical door plate in order to improve the space utilization rate of the room.
[0002]
[Prior art]
This type of revolving door has been previously filed by the present applicant, and is also described in, for example, Japanese Utility Model Publication No. 7-42852.
[0003]
FIG. 11 shows a revolving door described in Japanese Utility Model Laid-Open No. 7-42852. In this revolving door, a large number of rollers 51 are attached to the outer peripheral edge of the upper part of the semi-cylindrical door plate 50. The roller 51 is supported by a circular rail 53 provided on a door support 52 formed in a circular shape. Further, a rotation shaft 54 is connected to the central portion of the upper portion of the door plate 50, and the door plate 50 is also supported by the rotation shaft 54. As described above, the outer peripheral edge portion of the door plate 50 is supported by the roller 51, and the central portion of the door plate 50 is supported by the rotation shaft 54, so that the door plate 50 can be smoothly rotated.
[0004]
[Problems to be solved by the invention]
In the revolving door described in the above publication, the roller 51 and the rail 53 are in contact with each other on a plane parallel to the rotation axis of the revolving door. In order to rotate the door plate 50, the contact portion is slid. Must change direction. The frictional resistance generated during this change of direction cannot be ignored, leaving room for improvement in terms of smooth rotation of the door plate 50.
[0005]
Further, since the central portion of the door plate 50 is supported by the rotary shaft 54, the height of the entire rotary door is increased and the structure is complicated.
The present invention has been made in view of the above matters, and the configuration of the revolving door is not complicated, and the height of the entire revolving door is not increased, and at the same time, the door plate can be smoothly rotated. Is a technical issue. Moreover, let it be a technical subject to provide the rotation door which enabled the door board to rotate stably.
[0006]
[Means for Solving the Problems]
The present invention employs the following means in order to solve the above problems.
That is, a rail 3 having a circular cross section in a circular shape in plan view, a pair of upper rollers 12a and 12b that roll on the upper half side of the rail 3 and are positioned on the inner peripheral side and the outer peripheral side of the rail 3, respectively, A plurality of traveling devices 10 that travel with the rail 3 sandwiched by at least one lower roller 13 that rolls on the lower half side of the three, and a surface that is suspended by these traveling devices 10 is formed in a convex shape and a back surface is a concave shape The pair of upper rollers 12a and 12b includes shaft portions 21a and 21b that are orthogonal to the line that is orthogonal to the rail 3 and that is inclined to the perpendicular. Each was provided with a revolving door.
[0007]
The pair of upper rollers 12a and 12b has a diameter of the upper roller 12a positioned on the inner peripheral side of the rail 3 so that the rotation speed when rolling on the rail 3 is synchronized. The diameter of the upper roller 12b positioned at the position can be smaller.
[0008]
Moreover, the door latch part 40 provided in the said rail 3 side, the 1st protrusion 60 provided in the one side edge part of the said door board 32 side, and the 2nd protrusion provided in the other side edge part of the said door board 32 side 70, and the first projection 60 holds the door plate 32 by connecting to the door holding portion 40 from one of the door holding portions 40 when the surface of the door plate 32 closes the doorway toward the room. The second protrusion 70 is configured to hold the door plate 32 by connecting the door plate 32 from the other side of the door holding portion 40 to the door holding portion 40 when the door plate 32 closes the doorway with the surface of the door plate 32 facing outside. it can.
[0009]
As long as the mounting position of the door stop 40 is on the rail 3 side, it may be on the rail 3 or a member for fixing the rail 3, a chamber wall, or the like. Further, the mounting position of the first protrusion 60 and the second protrusion 70 may be the door plate 32 itself or the traveling device 10 as long as it is on the rotating door plate 32 side.
[0010]
The number of the lower rollers 13 may be one or two. Further, the rail 3 may be hollow or solid. In short, it is only necessary that the outer surface of the rail has a circular shape. In addition, as for the outer surface of the rail 3, if the upper part of the rail 3 is a cross-sectional arc shape, the lower part of the rail 3 does not necessarily need to be a cross-sectional arc shape.
[0011]
The traveling device 10 includes a frame 11, and the pair of upper rollers 12 a and 12 b and a lower roller 13 can be rotatably attached to the frame 11.
[0012]
The traveling device 10 may include an attachment position adjustment mechanism that enables adjustment of the attachment position of the lower roller with respect to the frame.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
This embodiment is a revolving door for opening and closing a doorway of a room used for a toilet, a telephone room, a changing room, a shower room or the like.
[0014]
The chamber 1 includes a wall portion 2 having a U-shape in plan view, and the front is open and serves as an entrance / exit.
The upper part of the chamber 1 is open, and a rail 3 having a circular cross section and an annular shape in plan view is installed therein. More specifically, the rail 3 is formed by bending a cylindrical pipe into an annular shape. Support plates 4a and 4b are fixed to the upper end front edges of the left and right side walls 2a and 2b of the wall portion 2, respectively. The surface is fixed.
[0015]
A traveling device 10 is attached to the rail 3 so as to be able to travel. As shown in FIGS. 4 to 5, the traveling device 10 includes a frame 11 having a cross-sectional question mark shape, and a pair of first upper roller 12 a and second upper roller 12 b that are paired on the inner upper portion of the frame 11. The lower roller 13 is rotatably attached to the inner lower part of the frame 11.
[0016]
More specifically, an inner ring 14a is disposed concentrically with the inner side of the first upper roller 12a, and a concave groove is formed annularly on the inner peripheral surface of the first upper roller 12a and the outer peripheral surface of the inner ring 14, respectively. Is provided. And between the 1st upper roller 12a and the inner ring | wheel 14a, many ball | bowl 15a engaged with the said each ditch | groove is inserted so that rolling is possible in a line substantially without gap. The first upper roller 12a and the inner ring 14a are integrated so that the ball 15a cannot be detached from between them and the first upper roller 12a and the inner ring 14a do not rattle. That is, the first upper roller 12a, the inner ring 14a, and the ball 15a form a bearing device, and the first upper roller 12a is rotatably supported by the inner ring 14a.
[0017]
Similarly to the first upper roller 12a, the second upper roller 12b has a bearing device structure together with the inner ring 14b and the ball 15b, and the second upper roller 12b is rotatably supported by the inner ring 14b.
[0018]
On the other hand, a roller support 16 is disposed below the upper flange 11 a of the frame 11, and this roller support 16 is fixed to the upper flange 11 a by bolts 17 and nuts 18 and 20. The roller support 16 includes a shaft portion 21a that is orthogonal to a line that is inclined inwardly downward by about 30 degrees with respect to a perpendicular passing through the center of the rail 3 (center direction of the rail 3 in plan view). In addition, the roller support 16 includes a shaft portion 21 b that is orthogonal to a line that is inclined downward about 30 degrees outward with respect to a perpendicular passing through the center of the rail 3. The inner rings 14a and 14b are fixed to the shaft portions 21a and 21b.
[0019]
That is, the first upper roller 12a and the second upper roller 12b have their own axles so as to be parallel to the tangent line when the surface of the rail 3 contacts the bottom surface of each of the upper rollers 12a and 12b. It is. The first upper roller 12a is rotatably supported by the shaft portion 21a, and the second upper roller 12b is rotatably supported by the shaft portion 21b.
[0020]
The lower roller 13 has the same support structure as the upper roller 12. In other words, an inner ring 22 is disposed concentrically with the inner side of the lower roller 13, and a concave groove is provided in an annular shape on the inner peripheral surface of the lower roller 13 and the outer peripheral surface of the inner ring 22. And between the lower roller 13 and the inner ring | wheel 22, many balls 23 engaged with each said ditch | groove are inserted so that rolling is possible in a line substantially without gap. The lower roller 13 and the inner ring 22 are integrated so that the ball 23 cannot be detached from between them and the lower roller 13 and the inner ring 22 do not rattle. That is, the lower roller 13, the inner ring 22, and the ball 23 have a structure of a bearing device, and the lower roller 13 is rotatably supported by the inner ring 22.
[0021]
A bolt 24 is inserted into the inner ring 22. The bolt 24 extends in the horizontal direction perpendicular to the rail 3, and the bolt 24 passes through the inner ring 22, the collar 25, and the spacer plate 26, and is provided in the upper and lower portions provided at the lower portion of the standing portion 11 b of the frame 11. It passes through a long hole 11 c that is long in the direction, and is fixed to the standing portion 11 b by a nut 27.
[0022]
In the traveling device 10, the upright portion 11 b of the frame 11 is arranged on the inner side of the rail 3, the first upper roller 12 a travels on the inner peripheral side upper portion of the rail 3, and the second upper roller 12 b is the upper outer periphery of the rail 3 Further, the lower roller 13 is attached so as to run in the lower center of the rail 3.
[0023]
The diameter of the first upper roller 12a is smaller than the diameter of the second upper roller 12b. This is to synchronize the rotational speeds of the first upper roller 12 a that rolls on the inner peripheral side of the rail 3 and the second upper roller 12 b that rolls on the outer peripheral side of the rail 3. Therefore, a value obtained by dividing the wheel distance of the first upper roller 12a by the inner peripheral side total distance of the rail 3, and a value obtained by dividing the wheel distance of the second upper roller 12b by the outer peripheral side total peripheral distance of the rail 3. The diameters of the upper rollers 12a and 12b may be set so as to match.
[0024]
Note that the spacer plate 26 is adjusted in advance so that the lower roller 13 is positioned at the lower center of the rail 3.
When the traveling device 10 is attached to the rail 3, the nut 27 is loosened and the bolt 24 is shifted to the lower limit position of the long hole 11c, and the rail 3 is moved to the first upper roller 12a, the second upper roller 12b, and the lower roller. 13 is inserted. Then, after the first upper roller 12a is brought into contact with the inner peripheral side upper part of the rail 3 and the second upper roller 12b is brought into contact with the outer peripheral side upper part of the rail 3 so that the standing part 11b faces in the vertical direction, The bolt 24 is lifted upward, the lower roller 13 is brought into contact with the lower center of the rail 3, and the nut 27 is tightened. That is, in this embodiment, the long hole 11c, the bolt 24, and the nut 27 constitute an attachment position adjusting mechanism that adjusts the attachment position of the lower roller 13 with respect to the frame 11.
[0025]
The assembly may be performed such that a slight gap is formed between the lower roller 13 and the rail 3. If it does in this way, even if there is distortion etc. in the rail 3, the said clearance gap will absorb this and the traveling apparatus 10 will drive | work smoothly.
[0026]
As shown in FIGS. 1 to 3, the three traveling devices 10 are arranged on the rails 3 at intervals of 90 degrees, and the traveling devices 10 are bolt nuts (not shown) provided on the lower flange portion 11 d of the frame 11. Is fixed to the upper end of the door plate 32.
[0027]
That is, the first traveling device 10 a is fixed to one end portion of the door plate 32, the second traveling device 10 b is fixed to the other end portion of the door plate 32, and the third traveling device 10 c is a central portion of the door plate 32. It is fixed to.
[0028]
Then, one end of the first traveling device 10a in the traveling direction (front side in FIG. 1) can be connected to a door holder 40 provided in the vicinity of the support plate 4b on the rail 3 from one side. One protrusion 73 is attached. As shown in FIG. 7, the first protrusion 73 is attached to the roller support 16 of the first traveling device 10a, and has a bulging portion 73a on the distal end side and a reduction portion 73b on the proximal end side. is doing.
[0029]
Moreover, the 2nd protrusion 63 which can be connected to the said door stop part 40 from the other is attached to the other end side (front side in FIG. 1) in the running direction of the said 2nd traveling apparatus 10b. Similar to the first protrusion 73, the second protrusion 63 is attached to the roller support 16 of the second traveling device 10b, and includes a bulging portion 63a and a reducing portion 63b.
[0030]
As shown in FIGS. 7 to 9, the door holding portion 40 includes a ball housing 41 a and a ball housing 41 b that are arranged in parallel to the orthogonal direction of the rail 3. A projecting passage 45, which is a space, is formed between the ball housings 41a and 41b. A spring 43 is housed inside the ball housing 41a, and the spring 43 biases the ball 42a toward the protruding passage 45. Similarly, a ball 42b biased toward the protruding passage 45 is attached to the ball housing 41b.
[0031]
These balls 42a and 42b are normally held in a state in which a part of the balls protrudes into the protruding passage 45, and when a force against the spring 43 is applied (when the bulging portions 73a and 63b pass), It is accommodated in the housings 41a and 41b. When the first protrusion 73 or the second protrusion 63 is connected to the door holding portion 40, the balls 42a and 42b advance into the protrusion passage 45 and sandwich the reduced portions 73b and 63b.
[0032]
The door holding portion 40 is fixed to the rail 3 by bolts 46, bolts 48, nuts 47, and nuts 49.
Further, a leaf spring 47 a and a leaf spring 47 b are provided on the rail 3 in the vicinity of one of the door holding portions 40 and the vicinity of the other, respectively.
[0033]
Next, a specific operation in the present embodiment will be described.
When the interior of the chamber 1 is not used, the door plate 32 is stopped with the surface (convex surface) side of the door plate 32 facing the interior of the chamber 1 as shown in FIG. At this time, as shown in FIG. 10, the first protrusion 73 provided on the first traveling device 10 a is sandwiched between the balls 42 a and 42 b from one of the door holding portions 40 and maintains the stopped state. At this time, since the bulging portion of the door plate 32 enters the wall portion 2, the vicinity of the entrance / exit of the chamber 1 can be widely used.
[0034]
When the inside of the chamber 1 is used, the door plate 32 is rotated counterclockwise as shown in FIG. 2 with the user standing at the entrance of the chamber 1. At this time, the first protrusion 73 is separated from the door holding portion 40, and each of the first to third traveling devices 10a, 10b, and 10c travels on the rail 3, and the door plate 32 rotates. .
[0035]
Further, as shown in FIG. 3, the rotating door plate 32 is in a state in which the surface side of the door plate 32 faces the outside of the chamber 1 (a state rotated 180 degrees counterclockwise from the door plate stop position in FIG. ) To stop. At this time, the 2nd protrusion 63 provided in the 2nd traveling apparatus 10b connects to the door stop part 40 from the other of the door stop part 40 (refer FIG. 7), and the stop state of the door board 32 is maintained. The bolt 17 of the second traveling device 10b rides on the leaf spring 47a immediately before the second protrusion 63 is connected to the door holding portion 40, so that the traveling speed of the door plate 32 is reduced, and the second protrusion 63 and It connects smoothly with the door holding part 40.
[0036]
And in the usage mode of the chamber 1, since the bulging part of the door plate 32 protrudes outward, the space in the chamber 1 is expanded. The user standing at the entrance of the room 1 enters the room from the outside without moving.
[0037]
In addition, in order for the user in the room 1 to move out of the room 1, the operation opposite to that described above, that is, the door plate 32 may be rotated 180 degrees clockwise.
Further, the door plate 32 may be rotated manually by a manual operation or by an automatic operation using a motor.
[0038]
According to the revolving door of the present embodiment, the rail 3 is sandwiched and supported by the two upper rollers 12a and 12b and the one lower roller 13 in each traveling device 10, so that the traveling device 10 is securely attached to the rail 3. The traveling device 10 is not detached from the rail 3.
[0039]
In addition, the first upper roller 12a that rolls on the inner peripheral side of the rail 3 and the second upper roller 12b that rolls on the outer peripheral side of the rail 3 are provided with their respective rotation axes inclined from the vertical direction. The traveling device 10 travels stably on the rail 3 having a circular cross section. In addition, while traveling on the rail 3 having a circular cross section by such a roller 12, the load from the roller 12 is input to the shaft of each roller 12 in a state close to the orthogonal direction. Can run smoothly.
[0040]
Further, the diameter of the first upper roller 12a is formed smaller than the diameter of the second upper roller 12b so that the rotational speeds of both the rollers 12a and 12b coincide with each other, so that the traveling of the traveling device 10 is stabilized. . Moreover, since each roller 12 rotates the same, the vibration and noise which generate | occur | produce also become monotonous, and a user does not feel uncomfortable.
[0041]
Further, the door plate 32 that rotates along the annular rail 3 has two types of stop positions (a stop position in which the door plate surface faces in the room and a door plate surface in the outdoor direction) by the single door holder 40. Since the stop position is controlled, the number of parts of the entire apparatus can be reduced and the structure can be simplified.
[0042]
Moreover, the structure which supports the door board 32 is unnecessary in the center upper part of the chamber 1, and while the total height of a revolving door can be restrained low, a structure becomes simple.
[0043]
【The invention's effect】
According to the present invention, the pair of upper rollers attached to the traveling device is provided with shaft portions that are perpendicular to the rail and perpendicular to the line that is perpendicular to the rail. For this reason, since the traveling device travels stably and smoothly on the rail having a circular cross section, the door plate can be smoothly rotated.
[0044]
Further, since the rotation speeds of the pair of upper rollers provided in the traveling device are synchronized, the door plate can be smoothly rotated and vibration and noise can be suppressed.
[0045]
Furthermore, since the stop position of the door plate that rotates along the annular rail is controlled by one door holding portion, the configuration of the entire apparatus can be simplified.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a revolving door according to an embodiment of the present invention in a state where a room is not used.
FIG. 2 is an overall perspective view showing a state in which a door plate is rotated in the embodiment.
FIG. 3 is an overall perspective view of a state in which the room is used in the embodiment.
FIG. 4 is a front view of the traveling device according to the embodiment.
FIG. 5 is a cross-sectional view of the traveling device in the embodiment.
FIG. 6 is a side view of the traveling device according to the embodiment.
FIG. 7 is a perspective view of the vicinity of a door stop in the embodiment.
FIG. 8 is a side view of the vicinity of a door stop in the embodiment.
FIG. 9 is a front view showing a partial cross section near the door stop in the embodiment.
FIG. 10 is a perspective view for explaining a state in which a door plate in the vicinity of the door holding portion in the embodiment is stopped.
FIG. 11 is a cross-sectional view showing a schematic configuration of a conventional revolving door.
[Explanation of symbols]
1 Chamber 2 Wall 3 Rail 4a, 4b Support Plate 10 Traveling Device 11 Frame 12a First Upper Roller 12b Second Upper Roller 13 Lower Roller 14 Inner Ring 16 Roller Supports 21a, 21b Shaft 22 Inner Ring 40 Door Stop 63 Second Protrusion 73 First protrusion

Claims (3)

A rail with a circular cross-section and a circular shape in plan view;
The upper half of the rail rolls and the rail is sandwiched by a pair of upper rollers positioned on the inner and outer peripheral sides of the rail and at least one lower roller rolling on the lower half of the rail. A plurality of traveling devices;
The door plate is hung from these traveling devices, the surface is formed in a convex shape and the back surface is formed in a concave shape, and
The pair of upper rollers are respectively provided with shaft portions that are perpendicular to a rail and perpendicular to a line that is inclined with respect to a vertical line. The pair of upper rollers is configured such that the diameter of the upper roller positioned on the inner peripheral side of the rail is larger than the diameter of the upper roller positioned on the outer peripheral side of the rail so that the rotation speed when rolling on the rail is synchronized. The revolving door according to claim 1, wherein the revolving door has a small diameter. A door stop provided on the rail side;
A first protrusion provided at one end of the door plate side and a second protrusion provided at the other end of the door plate;
When the surface of the door plate closes the entrance and exits the door plate, the first protrusion is connected to the door holding portion from one of the door holding portions to hold the door plate, and the second protrusion is the surface of the door plate. 3. The revolving door according to claim 1, wherein when the doorway is closed to the outside, the door plate is held by connecting to the door holding portion from the other side of the door holding portion.

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