JP6284455B2 - Hoisting machine and elevator - Google Patents

Description

  The present invention relates to a hoisting machine for getting on and off a car and a lift equipped with the hoisting machine.

  Conventionally, an elevator includes a riding basket, a counterweight, a rope that connects the riding basket and the counterweight, and a hoisting machine around which the rope is wound. The hoisting machine has a main shaft, a sheave supported rotatably on the main shaft and wound with a rope, and a rotor block connected to the sheave. A magnet facing the stator is fixed to the inner peripheral surface of the rotor block. The magnet is positioned by being brought into contact with a right-angled corner provided on the rotor block. For safety, the hoisting machine is provided with a brake mechanism that presses the rotor block and brakes the driving of the rotor block.

  Furthermore, the technique described in Patent Document 1 describes a hoisting machine in which an elastic member is interposed between a rotor magnet that is a rotor block and a back yoke.

Japanese Patent Laid-Open No. 11-41845

  However, when the rotor block is pressed by the brake mechanism, the rotor block is deformed. Therefore, in the technique described in Patent Document 1, the deformation of the rotor block is repeated, so that the elastic member interposed between the rotor magnet and the back yoke is deteriorated, which adversely affects the holding of the rotor magnet, that is, the magnet. There was a risk of affecting.

  Furthermore, when the rotor block is deformed, stress is applied to the magnet fixed to the rotor block, and the magnet may be damaged.

  In view of the above problems, an object of the present invention is to provide a hoisting machine and an elevator that can prevent a magnet from being damaged and can reliably hold the magnet.

In order to solve the above-described problems and achieve the object of the present invention, a hoisting machine of the present invention is a hoisting machine in which a rope connected to a car is wound, a main shaft, a stator, a sheave, A connecting portion, a rotor block, a magnet, and a brake mechanism are provided. The stator is attached to the main shaft. The sheave is rotatably supported on the main shaft. The connecting portion is connected to the sheave. The rotor block is vertically connected to the connection portion and is disposed to face the stator. The magnet is fixed to the inner wall surface of the rotor block and faces the stator. The brake mechanism presses the rotor block. The rotor block is provided with a fixing portion that holds a magnet. The fixed portion is provided on the inner wall surface of the rotor block, is continuous from the fixed surface to which one surface of the magnet is bonded, and the corner on the connecting portion side of the fixed surface, and extends from the fixed surface toward the axis of the main shaft. And an inclined surface inclined in a direction away from the connecting portion. The magnet has an opposing surface that faces the inclined surface and is inclined in the same direction as the inclined surface. In addition, the inclination angle of the inclined surface is set to an angle different from the inclination angle of the opposing surface, and a gap is formed between the inclined surface and the opposing surface that widens as the distance from the fixed surface increases.

  The elevator of the present invention includes a car that moves up and down in the hoistway, a counterweight connected via the car and a rope, and a hoisting machine that raises and lowers the car by winding the rope. I have. Moreover, the hoisting machine mentioned above is used for the hoisting machine.

  According to the hoisting machine and the elevator of the present invention, the magnet can be prevented from being damaged. Furthermore, since the inclined surface of the fixing portion and the facing surface of the magnet are combined in a wedge shape, the magnet can be reliably held.

It is a schematic structure figure showing typically the elevator concerning the 1st example of an embodiment of the present invention. It is sectional drawing which shows the winding machine concerning the 1st Example of this invention. It is explanatory drawing which shows the state which the brake in the winding machine concerning the 1st Example of this invention act | operated. It is sectional drawing which shows the principal part of the winding machine concerning the 1st Example of this invention. It is explanatory drawing which expands and shows the principal part of the state which the brake in the winding machine concerning the 1st Example of this invention act | operated. It is sectional drawing which shows the principal part of the winding machine concerning the 2nd Example of this invention. It is explanatory drawing which expands and shows the principal part of the state which the brake in the winding machine concerning the 2nd Example of this invention act | operated. It is sectional drawing which shows the principal part of the winding machine concerning the 3rd Example of this invention. It is explanatory drawing which expands and shows the principal part of the state which the brake in the winding machine concerning the 3rd Example of this invention act | operated. It is an expanded sectional view which shows the winding machine concerning the 4th Example of this invention. It is an expanded sectional view which shows the winding machine concerning the 5th Example of this invention. It is an expanded sectional view showing the winding machine concerning the 6th example of an embodiment of the present invention.

  Hereinafter, an embodiment of an elevator according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the common member in each figure.

1. First embodiment example 1-1. First, a configuration of an elevator according to a first embodiment of the present invention (hereinafter referred to as “this example”) will be described with reference to FIG.
FIG. 1 is a schematic configuration diagram showing a configuration example of the elevator of this example.

  As shown in FIG. 1, the elevator 1 of this example moves up and down in a hoistway 110 formed in a building structure. The elevator 1 includes a car 120 on which people and luggage are placed, a rope 130, a counterweight 140, and a hoisting machine 100. The hoistway 110 is formed in a building structure, and a machine room 160 is provided on the top thereof.

  The hoisting machine 100 is disposed in the machine room 160 and raises and lowers the car 120 by winding a rope 130. Further, in the vicinity of the hoisting machine 100, a warping wheel 150 on which the rope 130 is mounted is provided.

  The counterweight 140 is set to approximately the same mass as that of the car 120 when not loaded. Therefore, the tension ratio between the ropes 130 on the side of the car 120 and the counterweight 140 is 1 when there is no object or person loaded in the car 120. As a result, the output of the hoisting machine 100 when there is no load can be kept low.

  The car 120 is formed in a hollow, substantially rectangular parallelepiped shape. The car 120 is connected to the counterweight 140 via the rope 130 and moves up and down in the hoistway 110.

Next, the hoisting machine 100 of this example will be described with reference to FIGS.
FIG. 2 is a cross-sectional view showing the hoisting machine 100 of the present example, and FIG. 3 is a cross-sectional view showing a state in which the hoisting machine 100 of the present example performs a braking operation.

  As shown in FIG. 2, the hoisting machine 100 includes a frame 2, a main shaft 3, a rotor block 4, a sheave 5, a brake mechanism 6, and a plurality of stators 7. The hoisting machine 100 of the present example is an outer rotor type hoisting machine in which the rotor block 4 is disposed outside the plurality of stators 7 in the radial direction.

  The frame 2 is disposed on one side in the axial direction of the main shaft 3. The frame 2 includes a boss portion 11 to which the main shaft 3 is attached, an attachment portion 12 to which the plurality of stators 7 are fixed, and a connecting portion 13 that connects the boss portion 11 and the attachment portion 12. One side of the main shaft 3 in the axial direction is fitted to the boss portion 11.

  The connecting portion 13 is provided with an annular protrusion 14. The protrusion 14 protrudes toward the other side in the axial direction of the main shaft 3 in the connecting portion 13. An oil receiving cover 15 is fixed to the top of the protrusion 14 on the other side in the axial direction of the main shaft 3. A space portion 16 is formed between the oil receiving cover 15 and the connecting portion 13. Grease leaked from an oil seal 24 or the like to be described later accumulates in the space portion 16.

  An oil reservoir 17 is disposed in the vicinity of the space 16 that is disposed in the lower portion in the vertical direction. The space 16 and the oil reservoir 17 communicate with each other through a communication hole 18 provided in the connecting portion 13. The grease that has flowed into the space 16 passes through the communication hole 18 and flows into the oil reservoir 17.

  A mounting portion 12 is provided outside the connecting portion 13 in the radial direction. The attachment portion 12 is a concave portion formed in a substantially cylindrical shape with one side in the axial direction of the main shaft 3 closed and the other side opened. A stator 7 composed of an iron core and a stator coil wound around the iron core is fixed to the recess of the mounting portion 12. On the outer side in the radial direction of the attachment portion 12, a side wall portion 12 a that protrudes toward the other side in the axial direction of the main shaft 3 is provided. Openings 12b are formed in the side wall portions 12a arranged above and below in the vertical direction.

  In addition, brake mechanisms 6 are arranged in the upper and lower portions of the frame 2 in the vertical direction. The brake pad 6 a of the brake mechanism 6 is inserted into the opening 12 b of the attachment portion 12.

  Further, as shown in FIG. 2, the rotor block 4 and the sheave 5 are integrally configured via a connection portion 8. The sheave 5 is formed in a substantially cylindrical shape. A rope 130 shown in FIG. 1 is wound around the sheave 5. Then, the rope 130 is wound around the sheave 5 as the sheave 5 rotates.

  A cylindrical bearing housing 21 is provided at the radial center of the sheave 5. A bearing 22 is provided on the inner wall of the cylindrical hole of the bearing housing 21. The bearing housing 21 is rotatably supported via a bearing 22 on the other axial side of the main shaft 3. A flange portion 3 a that protrudes outward in the radial direction is provided at the other axial end portion of the main shaft 3. The flange portion 3 a abuts on a bearing 22 provided in the bearing housing 21. Thus, the sheave 5 and the bearing housing 21 can be aligned with the main shaft 3, and the sheave 5 and the bearing housing 21 are prevented from falling off the main shaft 3.

  A bearing cover 23 is provided at an opening of the bearing housing 21 that faces the other end surface in the axial direction of the main shaft 3 so as to close the opening. For example, a liquid gasket, a sealant, or an O-ring is disposed on the bearing cover 23 to seal the opening of the bearing housing 21.

  Furthermore, an oil seal 24 is provided at the end of the bearing housing 21 opposite to the opening. The oil seal 24 is interposed between the bearing housing 21 and the main shaft 3. The oil seal 24 and the bearing cover 23 seal the space formed on the other axial side of the main shaft 3 and the bearing housing 21.

  The connection portion 8 is substantially vertically continuous from one side in the axial direction of the sheave 5 toward the outside in the radial direction. In addition, a substantially cylindrical rotor block 4 is provided on the outer side of the connecting portion 8 in the radial direction.

  The rotor block 4 protrudes from the end of the connecting portion 8 in the direction opposite to the sheave 5. The rotor block 4 is inserted between the stator 7 fixed to the mounting portion 12 of the frame 2 and the brake pad 6 a of the brake mechanism 6. The rotor block 4 is disposed to face the stator 7.

  As shown in FIG. 3, when the brake mechanism 6 is driven, the brake pad 6 a is pressed against the outer circumferential surface of the rotor block 4 in the radial direction. Thereby, the rotation operation of the rotor block 4 and the sheave 5 is braked.

  A fixed portion 10 to which a plurality of magnets 31 are fixed is formed on the inner wall surface in the radial direction of the rotor block 4. The plurality of magnets 31 are fixed at predetermined intervals along the circumferential direction of the rotor block 4. Therefore, the plurality of magnets 31 are opposed to the plurality of stators 7 fixed to the attachment portion 12 of the frame 2 with a predetermined interval. The plurality of magnets 31 are alternately arranged with N and S poles along the circumferential direction of the rotor block 4. The number of N pole magnets 31 and the number of S pole magnets 31 are set to the same number.

  The rotor block 4 is made of a material made of a magnetic material. In the hoisting machine 100 of this example, since the rotor block 4, the sheave 5, and the bearing housing 21 are integrally formed, the sheave 5 and the bearing housing 21 are also made of a magnetic material in the same manner as the rotor block 4. Formed from. However, it is not limited to this, You may comprise the rotor block 4, the sheave 5, and the bearing housing 21 as a separate member, respectively. Alternatively, the rotor block 4 may be formed of a material other than a magnetic material, a member made of a magnetic material may be attached to the inner peripheral surface of the rotor block 4, and the magnet 31 may be attached to this member.

Next, with reference to FIG.4 and FIG.5, the detailed structure of the fixed state of the rotor block 4 and the magnet 31 in the winding machine 100 of this example is demonstrated.
FIG. 4 is an enlarged cross-sectional view showing the main part of the hoisting machine 100 of this example, and FIG. 5 is an enlarged cross-sectional view showing the main part of the hoisting machine 100 during braking.

  As shown in FIG. 4, the fixed portion 10 to which the magnet 31 in the rotor block 4 is attached is a stepped portion that is recessed toward the outside in the radial direction. The fixed part 10 has a fixed surface 10a to which the magnet 31 is bonded and fixed via an adhesive, and an inclined surface 10b. The fixed surface 10 a is a stepped surface that is recessed toward the outside in the radial direction in the fixed portion 10. The side opposite to the connection portion 8 on the fixed surface 10a, that is, the frame 2 (see FIG. 3) side is open.

  The inclined surface 10b is formed continuously from the connection portion 8 side of the fixed surface 10a, that is, from the side opposite to the frame 2 (see FIG. 3). The inclined surface 10b is continuously inclined in a direction away from the connecting portion 8 as it goes from the fixed surface 10a toward the axis of the main shaft 3.

  Furthermore, the magnet 31 has an opposing surface 31a that faces the inclined surface 10b, and an adhesive surface 31b that is bonded to the fixed surface 10a. The opposing surface 31 a is disposed on the connection portion 8 side when fixed to the fixing portion 10. And the opposing surface 31a inclines corresponding to the inclined surface 10b. Further, the inclined surface 10b comes into contact with the opposing surface 31a and fits in a wedge shape.

  In addition, a contact plate 32 is disposed at the end of the rotor block 4 opposite to the connection portion 8, that is, the end of the frame 2 (see FIG. 3). The contact plate 32 is fixed to the end portion of the rotor block 4 via fixing bolts 33. At this time, the end surface 31 b of the magnet 31 opposite to the connection portion 8, that is, the end surface 31 b opposite to the facing surface 31 a comes into contact with the contact plate 32. The magnet 31 is sandwiched between the contact plate 32 and the inclined surface 10 b of the fixed portion 10. Thereby, alignment of the magnet 31 can be performed. The contact plate 32 is made of a nonmagnetic material such as stainless steel, for example.

  As shown in FIG. 3, when the brake mechanism 6 is driven, the rotor block 4 is pressed radially inward, that is, toward the axis of the main shaft 3 by the brake pad 6a. Here, in order to reduce the thickness of the hoisting machine 100, it is desired that the thickness of the connecting portion 8 be thinner than that of the rotor block 4. Therefore, as shown in FIG. 5, the rotor block 4 is deformed from the corner portion on the connection portion 8 side toward the inside in the radial direction. At this time, the opposing surface 31a of the magnet 31 receives a force in the direction indicated by the arrow P1 from the inclined surface 10b of the fixed portion 10.

  However, in this example, the surface in contact with the opposing surface 31a of the magnet 31 in the fixed portion 10 is formed as the inclined surface 10b, and the opposing surface 31a in contact with the inclined surface 10b in the magnet 31 is also inclined according to the inclined surface 10b. Yes. Therefore, the stress applied to the magnet 31 is distributed along the inclined surface 10b and the opposing surface 31a. As described above, since the stress applied to the magnet 31 during braking is dispersed, the magnet 31 can be prevented from being damaged.

  Further, the opposing surface 31a of the magnet 31 is in contact with the inclined surface 10b of the fixed portion 10 in a wedge shape. Therefore, in the hoisting machine 100 of this example, the magnet 31 can be reliably held by the fixed portion 10 and can be prevented from falling off the rotor block 4.

2. Second Embodiment Next, an elevator according to a second embodiment of the present invention will be described with reference to FIGS. 6 and 7.
FIG. 6 is an enlarged cross-sectional view showing a main part of the hoisting machine in the elevator according to the second embodiment, and FIG. 7 is a cross-sectional view showing a state during braking.

  The difference between the elevator according to the second embodiment and the elevator 1 according to the first embodiment is the configuration of the rotor block of the hoisting machine. Therefore, here, the rotor block will be described, and portions common to the elevator 1 according to the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIG. 6, the rotor block 44 is provided with a fixing portion 40 that fixes the magnet 31. The fixed part 40 has a fixed surface 40a and an inclined surface 40b. The corner 45 where the fixed surface 40a and the inclined surface 40b are connected is curved.

  In addition, a rounded chamfer is applied to the corner portion 31d where the facing surface 31a of the magnet 31 and the bonding surface 31c bonded to the fixing surface 40a of the fixing portion 40 are connected. Therefore, a space 48 is formed between the corner portion 45 of the fixed portion 40 and the corner portion 31 d of the magnet 31. Therefore, as shown in FIG. 7, even if the rotor block 44 is pressed, the compressive stress applied to the corner portion 31d of the magnet 31 can be dispersed. Thereby, it can prevent that the corner | angular part 31d of the magnet 31 is damaged.

  Since the other configuration is the same as that of the elevator 1 according to the first embodiment, a description thereof will be omitted. Even with the elevator having such a configuration, it is possible to obtain the same operational effects as those of the elevator 1 according to the above-described first embodiment.

3. Third Embodiment Next, an elevator according to a third embodiment of the present invention will be described with reference to FIGS. 8 and 9.
FIG. 8 is an enlarged cross-sectional view showing a main part of the hoisting machine in the elevator according to the third embodiment, and FIG. 9 is a cross-sectional view showing a state during braking.

  The elevator according to the third embodiment differs from the elevator 1 according to the first embodiment in the configuration of the rotor block of the hoisting machine. Therefore, here, the rotor block will be described, and portions common to the elevator 1 according to the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIG. 8, the fixing portion 50 in the rotor block 54 has a fixing surface 50a and an inclined surface 50b. In addition, the inclination angle of the inclined surface 50 b in the fixed part 50 is set to an angle different from the inclination angle of the facing surface 31 a of the magnet 31. Specifically, the inclination angle from the bonding surface 31 c of the facing surface 31 a of the magnet 31 is set to be an acute angle than the inclination angle from the fixing surface 50 a of the inclined surface 50 b of the fixing portion 50. Therefore, a V-shaped gap 57 is formed between the bonding surface 31c and the inclined surface 50b so as to spread away from the fixed surface 50a.

  The angle θ1 of the gap 57 formed by the adhesive surface 31c and the inclined surface 50b is set to a relationship of θ1 ≧ θ2 when the angle θ2 is the angle at which the rotor block 54 is pushed and deformed during braking as shown in FIG. Has been. That is, the angle θ1 of the gap 57 is set to be equal to or larger than the angle θ2. By providing the gap 57 between the adhesive surface 31c and the inclined surface 50b, it is possible to prevent a force from being applied to the adhesive surface 31c from the inclined surface 50b during braking.

  Since the other configuration is the same as that of the elevator 1 according to the first embodiment, a description thereof will be omitted. Even with the elevator having such a configuration, it is possible to obtain the same operational effects as those of the elevator 1 according to the above-described first embodiment.

4). Fourth Embodiment Next, a fourth embodiment of the elevator according to the present invention will be described with reference to FIG.
FIG. 10 is an enlarged cross-sectional view showing a main part of the hoisting machine in the elevator according to the fourth embodiment.

  As shown in FIG. 10, the rotor block 64 of the elevator according to the fourth embodiment is similar to the inclined surface 60b of the fixed portion 60, like the rotor block 54 according to the third embodiment. A gap 67 is provided between the opposing surface 31 a of the magnet 31. Furthermore, the corner | angular part 31d of the magnet 31 is notched planarly. Therefore, a space 68 is formed between the corner portion 31d of the magnet 31 and the corner portion 65 of the fixed portion 60, similarly to the rotor block 44 according to the second embodiment.

  Therefore, in the elevator according to the fourth embodiment, even when the rotor block 64 is pressed and deformed during braking, force is applied from the inclined surface 50b to the adhesive surface 31c by the V-shaped gap 67. Can be prevented. Furthermore, it is possible to prevent stress from concentrating on the corner 31d of the magnet 31 and damaging the corner 31d of the magnet 31.

  Since the other configuration is the same as that of the elevator 1 according to the first embodiment, a description thereof will be omitted. Even with the elevator having such a configuration, it is possible to obtain the same operational effects as those of the elevator 1 according to the above-described first embodiment.

5. Fifth Embodiment Next, an elevator according to a fifth embodiment of the present invention will be described with reference to FIG.
FIG. 11 is an enlarged cross-sectional view showing a main part of the hoisting machine in the elevator according to the fifth embodiment.

  As shown in FIG. 11, the rotor block 74 of the elevator according to the fifth embodiment is similar to the inclined surface 70b of the fixed portion 70, like the rotor block 54 according to the third embodiment. A gap 77 is provided between the opposing surface 31 a of the magnet 31. Further, the corner 31d of the magnet 31 is rounded as in the case of the magnet 31 according to the second embodiment. Therefore, a space 68 is formed between the corner portion 31d of the magnet 31 and the corner portion 75 of the fixed portion 70, similarly to the rotor block 44 according to the second embodiment.

  Therefore, the elevator according to the fifth embodiment can obtain the same operational effects as the elevator according to the fourth embodiment.

  Since the other configuration is the same as that of the elevator 1 according to the first embodiment, a description thereof will be omitted. Even with the elevator having such a configuration, it is possible to obtain the same operational effects as those of the elevator 1 according to the above-described first embodiment.

6). Sixth Embodiment Next, a sixth embodiment of the elevator according to the present invention will be described with reference to FIG.
FIG. 12 is an enlarged cross-sectional view showing a main part of the hoisting machine in the elevator according to the sixth embodiment.

  As shown in FIG. 12, the elevator according to the sixth embodiment has an elastic member 89 interposed between the inclined surface 80 b of the fixed portion 80 and the opposing surface 31 a of the magnet 31 in the rotor block 84. It is. The elastic member 89 is elastically deformed when the rotor block 84 is pressed and deformed during braking. Thereby, the force applied to the magnet 31 can be absorbed by the elastic member 89, and the magnet 31 can be prevented from being damaged.

  In addition, in the rotor block 84 according to the sixth embodiment, similarly to the rotor block 4 according to the first embodiment, the inclined surface 80b of the fixed portion 80 and the facing surface 31a of the magnet 31 are also provided. Is inclined in a direction in which stress is dispersed by deformation generated in the rotor block 84. Therefore, even if the elastic member 89 deteriorates over time, the stress applied to the magnet 31 can be dispersed by the inclined surface 80b and the opposing surface 31a, and the magnet 31 can be prevented from being damaged.

  Since the other configuration is the same as that of the elevator 1 according to the first embodiment, a description thereof will be omitted. Even with the elevator having such a configuration, it is possible to obtain the same operational effects as those of the elevator 1 according to the above-described first embodiment.

  The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention described in the claims. For example, the configurations of the rotor blocks according to the first to sixth embodiments described above may be variously combined. That is, the elastic member 89 may be interposed in the gap 57 formed in the rotor block 54 according to the third embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 2 ... Frame, 3 ... Main shaft, 4 ... Rotor block, 5 ... Sheave, 6 ... Brake mechanism, 6a ... Brake pad, 7 ... Stator, 8 ... Connection, 10, 40, 50, 60, 70, 80 ... fixed portion, 10a, 40a, 50a, 60a, 70a ... fixed surface, 10b, 40b, 50b, 60b, 70b, 80b ... inclined surface, 31 ... magnet, 31a ... facing surface, 31b ... end surface, 31c ... Bonding surface, 31d ... corner, 32 ... backing plate, 48, 68 ... space, 57, 67 ... gap 65 ... corner, 89 ... elastic member, 100 ... hoisting machine, 110 ... hoistway, 130 ... rope, 140 ... Balance weight, 150 ... Burdle, 160 ... Machine room

Claims (5)

In the hoisting machine in which the rope connected to the car is wound,
The spindle,
A stator attached to the main shaft;
A sheave supported rotatably on the main shaft;
A connecting portion connected to the sheave;
A rotor block that is vertically connected to the connecting portion and is disposed to face the stator;
A magnet fixed to the inner wall surface of the rotor block and facing the stator;
A brake mechanism for pressing the rotor block,
The rotor block is provided with a fixing portion that holds the magnet,
The fixing part is
A fixed surface provided on an inner wall surface of the rotor block, to which one surface of the magnet is bonded;
An inclined surface that is continuous from the corner of the fixed surface on the side of the connecting portion and is inclined in a direction away from the connecting portion as it extends from the fixed surface toward the axis of the main shaft,
The magnets have a said inclined surface opposed to and facing surface inclined in the same direction as the inclined surface,
The inclination angle of the inclined surface is set to an angle different from the inclination angle of the facing surface,
A hoisting machine in which a gap is formed between the inclined surface and the facing surface that widens away from the fixed surface . The hoisting machine according to claim 1, wherein a corner portion between the facing surface and the one surface of the magnet is rounded or notched. Angle of the gap, the hoisting machine according to claim 1, wherein the rotor blocks are set to be equal to or greater than the angle at which deformation upon being pressed by the brake mechanism. The hoisting machine according to claim 1, wherein an elastic member is interposed between the inclined surface and the facing surface. A car that goes up and down in the hoistway,
A counterweight coupled via the ride cage and rope;
A hoisting machine that raises and lowers the car by winding the rope;
The hoisting machine
The spindle,
A stator attached to the main shaft;
A sheave supported rotatably on the main shaft;
A connecting portion connected to the sheave;
A rotor block that is vertically connected to the connecting portion and is disposed to face the stator;
A magnet fixed to the inner wall surface of the rotor block and facing the stator;
A brake mechanism for pressing the rotor block,
The rotor block is provided with a fixing portion that holds the magnet,
The fixing part is
A fixed surface provided on an inner wall surface of the rotor block, to which one surface of the magnet is bonded;
An inclined surface that is continuous from the corner of the fixed surface on the side of the connecting portion and is inclined in a direction away from the connecting portion as it extends from the fixed surface toward the axis of the main shaft,
The magnet may have a said inclined surface opposed to and facing surface inclined in the same direction as the inclined surface,
The inclination angle of the inclined surface is set to an angle different from the inclination angle of the facing surface,
An elevator in which a gap is formed between the inclined surface and the facing surface that widens away from the fixed surface .

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