Door motor and door arrangement of an elevator

Abstract

The present application provides a door motor of an elevator and a door device of an elevator, which can further increase output under the constraint of configuration. The door device (1) is provided with a door motor (3) and a beam (2), and the door motor has a stator (6) and a housing (5). The housing has a mounting surface (11) parallel to the central axis of the stator and flat on the outside. The housing has a protruding portion (12) protruding from the plane (P1) containing the mounting surface to the radial outside. The stator is embedded in a manner that the outer side surface (10) is in surface contact with the inner side of the inner side surface (9) of the housing. In the housing, the outer peripheral surface (P2) protrudes from the plane to the radial outside. The outer peripheral surface is a cylindrical curved surface obtained by increasing a predetermined thickness from the inner side surface to the radial outside. The thickness is set to be able to maintain the embedding of the stator. The portion in the outer peripheral surface protruding from the plane to the radial outside passes through the inside of the protruding portion. The door motor is fixed on the beam in a manner that the mounting surface is in surface contact.

Description

TECHNICAL FIELD

[0001] The present application relates to a door motor of an elevator and a door device of an elevator. BACKGROUND

[0002] Patent Literature 1 discloses an example of a door device of an elevator. The door device is provided with a door motor. The door motor is provided on a beam of the door device. The door motor drives a door panel by outputting a torque.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT LITERATURE

[0005] Patent Literature 1: Japanese Patent Application Publication No. 2013-189294 SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] However, in the door motor of the door device of Patent Literature 1, there are constraints on the arrangement in terms of the length in the axial direction and the diameter, and the like. Therefore, there is a limit to the output of the door motor.

[0008] The present application relates to solving such problems. The present application provides a door motor of an elevator and a door device capable of further increasing the output under constraints on the arrangement.

[0009] MEANS FOR SOLVING THE PROBLEMS

[0010] The door motor of the present application is provided with: a stator having an outer side surface; and a housing having an inner side surface, an installation surface parallel to a central axis of the stator and flat on the outer side, and the housing having a protruding portion protruding from a plane including the installation surface to the radially outer side, the stator being embedded in a manner that the outer side surface is in surface contact with the inner side of the inner side surface of the housing, in the housing, an outer peripheral surface obtained by adding a thickness predetermined so as to be able to maintain the embedding of the stator from the inner side surface to the radially outer side increasing from the plane including the installation surface to the radially outer side, the portion of the outer peripheral surface protruding from the plane including the installation surface passing through the inside of the protruding portion.

[0011] The door device of the present application is provided with: the door motor described above; and a structural member fixing the door motor in a manner that the installation surface of the housing is in surface contact.

[0012] EFFECT OF THE INVENTION

[0013] According to the door motor or the door device of the present application, it is possible to further increase the output under constraints on the arrangement. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a cross-sectional view of the door device of Embodiment 1.

[0015] Figure 2 This is an enlarged view of the key parts of the door motor according to the first embodiment.

[0016] Figure 3 It is a bottom view of the door device according to Embodiment 1.

[0017] Figure 4 This is a front view of the door device according to the first embodiment.

[0018] Figure 5 This is a diagram for explaining the effects of the door device according to the first embodiment.

[0019] Figure 6 This is a diagram for explaining the effects of the door device according to the first embodiment.

[0020] Figure 7 This is an enlarged view of the key parts of the door motor in embodiment 2.

[0021] Description of labels

[0022] 1: Door mechanism; 2: Beam; 3: Door motor; 4: Rotating body; 5: Housing; 6: Stator; 7: Cover; 8: Pulley; 9: Inner surface; 10: Outer surface; 11: Mounting surface; 12: Protrusion; 13: Mounting hole. DETAILED DESCRIPTION

[0023] The embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, identical or corresponding parts are denoted by the same reference numerals, and repeated descriptions are appropriately simplified or omitted. The present invention is not limited to the following embodiments, and any component of the embodiments may be modified or omitted without departing from the spirit of the present invention.

[0024] Implementation method 1.

[0025] Figure 1 It is a cross-sectional view of the door apparatus 1 according to the first embodiment.

[0026] The door device 1 is installed in the car of an elevator (not shown). The elevator car is a device that transports users between multiple floors of a building by moving in the up and down directions in a shaft installed in the building where the elevator is used. The door device 1 is a device that opens and closes the door panel (not shown) that divides the inside and outside of the car so that users can get on and off the elevator when the car stops at any floor. Here, the opening and closing direction of the door panel is set to the left and right direction. The door device 1 includes a beam 2 and a door motor 3. Figure 1 , a cross-sectional view taken along a plane perpendicular to the left-right direction and passing through the central axis of the door motor 3 is shown.

[0027] Beam 2 is an example of a structural member that is long in the horizontal direction. Beam 2 is, for example, positioned above a door panel. In this example, the cross-sectional shape of beam 2, taken along a plane perpendicular to the horizontal direction, is a rectangular shape with one side open. Beam 2 is, for example, a sectioned steel such as a channel or channel.

[0028] The door motor 3 is fixed to the beam 2. In this example, the door motor 3 is arranged inside the beam 2 having a rectangular cross section with one side open. The door motor 3 includes a rotating body 4, a housing 5, a stator 6, and a cover 7.

[0029] The rotating body 4 is a component that outputs driving force by rotating. The shape of the rotating body 4 is, for example, axisymmetric. The central axis of the rotating body 4 is oriented in the front-to-back direction. The rotating body 4 includes a pulley 8. The pulley 8 transmits the driving force for opening and closing the door panel via a belt (not shown).

[0030] The housing 5 is a portion constituting the outer shell of the door motor 3. The housing 5 has an inner side surface 9. The inner side surface 9 of the housing 5 is a cylindrical surface. The central axis of the inner side surface 9 of the housing 5 is coaxial with the central axis of the rotating body 4.

[0031] The stator 6 generates the driving force that rotates the rotating body 4. The stator 6 has an outer surface 10. The outer surface 10 of the stator 6 is cylindrical. The central axis of the outer surface 10 of the stator 6 is coaxial with the central axis of the rotating body 4. The stator 6 is embedded in the housing 5 so that the outer surface 10 is in surface contact with the inner side of the inner surface 9. In this example, the stator 6 is shrink-fitted into the housing 5.

[0032] The cover 7 is a plate-shaped member and is attached to the housing 5 so as to protect the stator 6 embedded in the housing 5 .

[0033] Figure 2 This is an enlarged view of the main part of the door motor 3 according to the first embodiment.

[0034] exist Figure 2 , the bottom of the housing 5 is shown.

[0035] The housing 5 has a mounting surface 11 on the outside of the bottom. Mounting surface 11 is a flat surface. Mounting surface 11 is parallel to the front-back direction. Mounting surface 11 is the portion that makes surface contact with the surface of beam 2. The housing 5 has a protrusion 12 on the outside of the bottom. The shape of protrusion 12 is, for example, rectangular. The four sides of the rectangular protrusion 12 are perpendicular to the bottom surface.

[0036] Figure 3 It is a bottom view of the door apparatus 1 in Embodiment 1.

[0037] exist Figure 3 , a view showing the beam 2 to which the door motor 3 is fixed is shown as viewed from below.

[0038] A mounting hole 13 is provided in the beam 2. The mounting hole 13 is, for example, a rectangular hole. The side surfaces of the four sides of the rectangular mounting hole 13 are respectively perpendicular to the surface of the beam 2 that is in surface contact with the mounting surface 11 of the housing 5. The mounting hole 13 is a hole for the protrusion 12 provided on the bottom of the housing 5 to be embedded. When the door motor 3 is mounted on the beam 2, the protrusion 12 of the housing 5 is embedded in the mounting hole 13. At this time, the side surfaces of the two sides of the rectangular protrusion 12 that are perpendicular to each other abut against the side surfaces of the two sides of the rectangular mounting hole 13 that are perpendicular to each other. In this way, the door motor 3 is positioned relative to the beam 2. In addition, the door motor 3 is fixed to the beam 2, for example, by bolts or the like.

[0039] Figure 4 It is a front view of the door apparatus 1 of Embodiment 1.

[0040] When the door motor 3 is fixed to the beam 2 , the mounting surface 11 of the housing 5 makes surface contact with the surface of the beam 2 .

[0041] Here, the protrusion 12 of the housing 5 protrudes radially outward from the plane P1. The plane P1 is a virtual plane including the mounting surface 11 of the housing 5. In this example, the lower surface of the protrusion 12 is arranged in the same plane as the lower surface of the beam 2.

[0042] Furthermore, the outer peripheral surface P2 of the housing 5 protrudes radially outward from the plane P1. The outer peripheral surface P2 is a hypothetical cylindrical curved surface obtained by increasing a predetermined thickness radially outward from the inner side surface 9 of the housing 5. Here, the predetermined thickness is set so that the housing 5 can maintain the embedding of the stator 6 based on shrink fit or the like. In addition, a portion or all of the outer peripheral surface P2 may also include the outer surface of the housing 5. The portion of the outer peripheral surface P2 that protrudes radially outward from the plane P1 passes through the interior of the protrusion 12. That is, the radial thickness of the housing 5 within the plane that includes the central axis of the rotating body 4 and passes through the center of the protrusion 12 is a thickness that is at least sufficient to maintain the embedding of the stator 6. Furthermore, the radial thickness of the housing 5 within the plane that includes the central axis of the rotating body 4 and passes through the root of the side surface of the protrusion 12 is also a thickness that is at least sufficient to maintain the embedding of the stator 6.

[0043] Figure 5 and Figure 6 It is a diagram for explaining the effects of the door apparatus 1 according to the first embodiment.

[0044] exist Figure 5shows a front view of a door motor without a protrusion on the bottom of the housing. The radial thickness of the housing must be at least sufficient to accommodate the stator. Therefore, when arranging a door motor within a limited space, such as inside a beam with a rectangular cross-section open on one side, the diameter of the door motor is limited. In other words, the diameter of the stator is limited. Since the output of the door motor depends on the diameter of the stator, the output of the door motor is limited.

[0045] On the other hand, Figure 6 , a front view of the door motor 3 is shown with a protrusion 12 provided on the bottom of the housing 5. Since the diameter of the stator 6 can be increased by an amount corresponding to the presence of the protrusion 12, the output of the door motor 3 can be further increased within the constraints of the configuration.

[0046] As described above, the door device 1 of embodiment 1 includes a door motor 3 and a beam 2. The door motor 3 includes a stator 6 and a housing 5. The stator 6 has a cylindrical outer surface 10. The housing 5 has a cylindrical inner surface 9. The housing 5 has a flat mounting surface 11 on the outside that is parallel to the central axis of the stator 6. The housing 5 has a protrusion 12 that protrudes radially outward from a plane P1 including the mounting surface 11. The stator 6 is embedded in the housing 5 so that the outer surface 10 is in surface contact with the inner side of the inner surface 9 of the housing 5. In the housing 5, the outer peripheral surface P2 protrudes radially outward from the plane P1 including the mounting surface 11. The outer peripheral surface P2 is a cylindrical curved surface obtained by increasing a predetermined thickness from the inner surface 9 radially outward. This thickness is set to maintain the embedding of the stator 6. The portion of the outer peripheral surface P2 that protrudes radially outward from the plane P1 including the mounting surface 11 passes through the inside of the protrusion 12. The door motor 3 is fixed to the beam 2 so that the mounting surface 11 is in surface contact.

[0047] According to such a configuration, the output of the door motor 3 can be further increased under the constraints of the arrangement.

[0048] Furthermore, a mounting hole 13 is provided in the structural member, and when the mounting surface 11 and the structural member are in surface contact, the protrusion 12 is fitted into the mounting hole 13 .

[0049] According to such a configuration, the door motor 3 can be positioned by fitting the protrusion 12 into the mounting hole 13 , so that the workability of mounting the door motor 3 is further improved.

[0050] Implementation method 2.

[0051] In the second embodiment, points different from the example disclosed in the first embodiment are described in particular detail. With respect to features not described in the second embodiment, any features in the example disclosed in the first embodiment can be adopted.

[0052] Figure 7 This is an enlarged view of the main part of the door motor 3 according to the second embodiment.

[0053] exist Figure 7 , the bottom of the housing 5 is shown.

[0054] A step is provided between the mounting surface and at least one side of the protrusion 12, either in front or behind. Thus, the mounting surface 11 of the housing 5 is connected across both sides of the protrusion 12 in the in-plane direction of the mounting surface 11 and in the left-right direction perpendicular to the central axis of the stator 6.

[0055] With this structure, the mounting surface 11 of the housing 5 is not divided into left and right parts, so it is easy to measure the flatness of the mounting surface 11. This makes it easier to manufacture or process the door motor 3.

Claims

1. An elevator door motor, comprising: a stator having an outer side; and a housing having an inner side surface and a flat mounting surface on the outer side thereof that is parallel to the central axis of the stator, and a protrusion that protrudes radially outward from a plane including the mounting surface; The stator is embedded in such a manner that the outer surface is in surface contact with the inner side of the inner surface of the housing. In the housing, an outer peripheral surface, which is increased radially outward from the inner surface by a thickness predetermined so as to maintain the embedding of the stator, protrudes radially outward from a plane including the mounting surface, and a portion of the outer peripheral surface protruding from the plane including the mounting surface passes through an interior of the protrusion; in, The mounting surface of the housing is connected across both sides of the protrusion in an in-plane direction perpendicular to the central axis of the stator.

2. An elevator door device comprising: The door motor according to claim 1; and A structural member fixes the door motor in a manner of making surface contact with the mounting surface of the housing.

3. The door device of an elevator according to claim 2, wherein: The structural component is provided with a mounting hole, and when the mounting surface of the housing is in surface contact with the structural component, the protrusion is fitted into the mounting hole.

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