CN217486321U - Elevator assembly and disc type motor thereof - Google Patents

Abstract

The utility model discloses an elevator subassembly and disk motor thereof, a serial communication port, include: the rotor and the rotor which is rotatably sleeved on the shell through a driving bearing and a non-driving bearing, wherein a rotor shaft is arranged on one side of the rotor, and the driving bearing and the non-driving bearing are both assembled on the rotor shaft. The driving bearing and the non-driving bearing are arranged on the same side of the rotor, namely, the positioning connection between the shell and the rotor is realized through one side, so that the axial distance of the disc motor can be reduced, and the disc motor and other parts can be conveniently integrated.

Description

Elevator assembly and disc type motor thereof

Technical Field

The utility model relates to the technical field of electric machines, in particular to elevator subassembly and disk motor thereof.

Background

At present, a motor for an elevator door is generally a disc type motor, the disc type motor generally refers to an axial permanent magnet motor, also called as a disc type permanent magnet motor, and the disc type motor obtains more and more attention due to the advantages of a golden hammer structure, high efficiency, high functional density and the like.

The bearings of the existing disk motor are usually arranged at two axial ends of a motor rotor, and the mode occupies large space.

Therefore, how to reduce the axial size of the disc motor is a technical problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a disk motor to reduce disk motor's axial dimension. Furthermore, the utility model also provides an elevator door subassembly of having above-mentioned disc motor.

In order to achieve the above object, the utility model provides a following technical scheme:

a disc motor, comprising: the rotor and the rotor which is rotatably sleeved on the shell through a driving bearing and a non-driving bearing, wherein a rotor shaft is arranged on one side of the rotor, and the driving bearing and the non-driving bearing are both assembled on the rotor shaft.

Preferably, in the disk motor, a drive bearing inner ring positioning table for abutting against and positioning the drive bearing inner ring and a non-drive bearing inner ring positioning table for facing a first side of the non-drive bearing inner ring are provided on the drive rotor shaft in the axial direction.

Preferably, in the disc motor, the housing is provided with a driving bearing chamber for accommodating the driving bearing and a non-driving bearing chamber for accommodating the non-driving bearing, and the driving bearing chamber and the non-driving bearing chamber are arranged along an axial direction of the housing, the driving bearing inner ring positioning table is located in the driving bearing chamber, and the non-driving bearing inner ring positioning table is located in the non-driving bearing chamber.

Preferably, in the disc motor, the housing is provided with a bearing outer ring positioning table for limiting the driving bearing outer ring and the non-driving bearing outer ring, and the bearing outer ring positioning table is located between the driving bearing chamber and the non-driving bearing chamber.

Preferably, the disc motor further includes a synchronizing wheel fixed to an end of the rotor shaft, and the non-driving bearing is located between the synchronizing wheel and the driving bearing.

Preferably, in the disk motor, the synchronizing wheel is provided with a synchronizing wheel positioning table, the second side of the inner ring of the non-driving bearing is limited by the synchronizing wheel positioning table, the first side of the inner ring of the non-driving bearing abuts against the non-driving bearing inner ring positioning table for limitation, and the outer ring of the non-driving bearing on the first side is axially pre-tightened with the bearing outer ring positioning table through an axial pre-tightening piece.

Preferably, the disc motor further includes an external rotating element disposed between the synchronizing wheel and the non-driving bearing, an elastic component for axially pre-tightening the inner ring of the non-driving bearing is disposed between the external rotating element and a second side of the inner ring of the non-driving bearing, a first side of the inner ring of the non-driving bearing is in clearance fit with the inner ring positioning table of the non-driving bearing, and an outer ring of the non-driving bearing located on the first side abuts against the bearing outer ring positioning table for limiting.

Preferably, in the disk motor, the drive bearing inner ring is in interference fit with the rotor shaft, and the drive bearing outer ring is in interference fit with the drive bearing chamber.

Preferably, in the disc motor, the inner ring of the non-drive bearing is in interference fit with the rotor shaft, and the outer ring of the non-drive bearing is in clearance fit with the non-drive bearing chamber.

An elevator assembly comprising an elevator door and a disc motor for driving the elevator door, wherein the disc motor is any one of the disc motors described above.

The utility model provides a disk motor all sets up drive bearing and non-drive bearing in same one side of rotor, realizes through the unilateral promptly that the location of casing and rotor is connected to can reduce this disk motor's axial distance, the disk motor of being convenient for and the integration of other spare parts.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded view of a first embodiment of a disc motor disclosed in an embodiment of the present invention;

fig. 2 is a front sectional view of a disc motor according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a first embodiment of a rotor of a disc motor disclosed in an embodiment of the present invention;

fig. 4 is a first directional structural diagram of a housing of a disc motor disclosed in an embodiment of the present invention;

fig. 5 is a structural schematic diagram of a housing of a disc motor in a second direction according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a synchronizing wheel of a disc motor disclosed in an embodiment of the present invention;

fig. 7 is an exploded view of a second embodiment of a disc motor disclosed in an embodiment of the present invention;

fig. 8 is a front sectional view of a second embodiment of a disc motor disclosed in an embodiment of the present invention after assembly;

fig. 9 is a schematic structural view of a second embodiment of a rotor of a disc motor disclosed in an embodiment of the present invention;

1 is a locking nut, 2 is a synchronizing wheel, 3 is a non-driving bearing, 4 is an axial preload piece, 5 is a shell, 6 is a driving bearing, 7 is a stator and 8 is a rotor;

21 is a synchronizing wheel positioning table;

51 is a non-drive bearing chamber, 52 is a bearing outer ring positioning table, and 53 is a drive bearing chamber;

81 is a rotor shaft, 82 is a non-driving bearing inner ring positioning table, 83 is a driving bearing inner ring positioning table, 84 is a rotor disc, and 85 is a non-driving bearing outer inner ring positioning table;

9 is an external rotating member, and 10 is an elastic member.

Detailed Description

The utility model discloses a disk motor to reduce disk motor's axial dimensions. Furthermore, the utility model also discloses an elevator door component of having above-mentioned disc motor.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1, the present application discloses a disc motor comprising a lock nut 1, a synchronizing wheel 2, a non-drive bearing 3, an axial preload member 4, a housing 5, a drive bearing 6, a stator 7 and a rotor 8.

The rotor 8 and the stator 7 are core components of the motor, and the rotor 8 rotates to realize relative rotation with the stator 7 to generate current. The core of the present application lies in the installation of the rotor 8 and the housing 5, specifically, only one side of the rotor 8 in the present application is provided with a rotor shaft, so that the above-mentioned driving bearing 6 and non-driving bearing 3 are both arranged on the rotor shaft during installation, and the housing is rotationally connected with the rotor 8 through the driving bearing 6 and the non-driving bearing 3. Because the driving bearing 6 and the non-driving bearing 3 are both arranged on the same side of the rotor 8, namely the positioning connection between the shell 5 and the rotor 8 is realized through one side, the axial distance of the disc type motor can be reduced, and the integration of the disc type motor and other parts is facilitated.

As shown in fig. 2, a specific installation manner of each component of the disk motor is disclosed, in which a rotor shaft 81 of the rotor is provided only on one side of a rotor disk 84 as an installation base of the whole device, and the diameter and the length of the rotor shaft 81 are not particularly limited herein. Arranged in the axial direction from the bottom end to the top end in fig. 2 in the following order: the device comprises a rotor, a driving bearing 6, an axial preload piece 4, a non-driving bearing 3, a synchronous wheel 2 and a lock nut 1 for fixing the synchronous wheel 2; and along the radial direction, a shell 5 is sleeved outside the driving bearing 6 and the non-driving bearing 3, and a stator 7 is fixed in the shell 5.

The inner ring of the drive bearing 6 described above is fitted on the rotor shaft 81, the inner ring of the non-drive bearing 3 is also fitted on the rotor shaft 81, and the housing 5 is connected with the outer ring of the drive bearing 6 and the outer ring of the non-drive bearing 3. One end of the non-driving bearing 3 in the axial direction is provided with an axial preload piece 4, and the other end of the axial preload piece is abutted against the synchronous wheel 2.

The lock nut 1 is screwed to the rotor shaft 81 to fix the timing wheel 2 to the rotor shaft 81.

As shown in fig. 3, the rotor 8 in the present application specifically includes: rotor disk 84, rotor shaft 81, non-drive bearing inner race positioning stage 82, and drive bearing inner race positioning stage 83. The rotor disc 84 is a disc structure, and the axis of the rotor shaft 81 coincides with the center of the rotor disc 84, which may be an integral structure or an interference fit structure in practice. The rotor shaft 81 has a drive bearing inner race positioning table 83, a non-drive bearing inner race positioning table 82, and a screw thread at a free end in this order from the rotor disc 84 in the direction of the free end. Wherein, the drive bearing inner ring positioning table 83 and the non-drive bearing inner ring positioning table 82 are both formed by the step surface formed by the diameter change of the rotor shaft 81,

the rotor shaft 81 has three successively smaller stage in the direction away from the rotor disk 84, wherein the drive bearing inner race positioning stage 83 is a stepped surface formed by a large diameter section and a middle diameter section, and the non-drive bearing inner race positioning stage 82 is a stepped surface formed by a middle diameter section, a small diameter section and a middle diameter section. The diameter of the rotor shaft 81 and the size of the step face need to be set in conjunction with the bearing and are all within the protection range.

In addition, the free end of the rotor shaft 81 is a kidney-shaped section for matching with the mounting hole of the synchronous wheel 2, so as to realize relative fixation of the rotating shaft and the synchronous wheel 2 in the circumferential direction. The rotor shaft 81 has a threaded section at its end for connection with the above-mentioned lock nut 1.

The rotor shaft 81 is provided with a drive bearing inner ring positioning table 83 and a non-drive bearing inner ring positioning table 82 for limiting the positions of the two bearings and determining the installation distance of the two bearings.

As shown in fig. 4 and 5, a specific structure of the above-described housing 5 is disclosed in which a through hole is divided into a drive bearing chamber 53 and a non-drive bearing chamber 51 by a bearing outer ring positioning table 52 in the middle through hole of the housing 5. Specifically, the bearing outer ring positioning table 52 is a raised annular structure in the through hole. With reference to fig. 1 and 2, the driving bearing chamber 53 is used for assembling the driving bearing 6, and the non-driving bearing chamber 51 is used for assembling the non-driving bearing 3, and the outer ring of the driving bearing 6 and the outer ring of the non-driving bearing 3 are abutted and limited by the bearing outer ring positioning table 52.

As shown in fig. 6, the synchronizing wheel 2 disclosed in the present application has a synchronizing wheel positioning table 21 on the side near the non-drive bearing 3. As can be seen from fig. 2, 3 and 4, the inner ring of the non-drive bearing 3 is sleeved on the rotor shaft 81 and is installed in the non-drive bearing chamber 51 of the housing 5, one end of the inner ring of the non-drive bearing 3 in the axial direction is limited by the non-drive bearing inner ring positioning table 82 of the rotor shaft 81, and the other end is limited by the synchronizing wheel positioning table 21. One end of the outer ring of the non-driving bearing 3, which is close to the driving bearing 6, is abutted and limited by a bearing outer ring positioning table 52, and is abutted by the axial preload piece 4 and the bearing outer ring positioning table 52.

As can be seen from fig. 2, 3 and 5, the inner ring of the drive bearing 6 is fitted around the rotor shaft 81 and mounted in the drive bearing chamber 53 of the housing 5, one end of the inner ring of the drive bearing 6 in the axial direction abuts against the drive bearing inner ring positioning table 83 for limiting, and one end of the outer ring of the drive bearing 6 close to the non-drive bearing 3 abuts against the bearing outer ring positioning table 52 for limiting. By utilizing the axial force characteristic of the axial magnetic field of the disc type motor, the axial force of the rotor disc 84 acts on the axial direction of the disc type motor to provide an axial pre-tightening action for the driving bearing 6, so that the service life of the driving bearing 6 is longer.

The specific assembly relationship of the disc motor disclosed in the application is as follows:

the inner ring of the drive bearing 6 is in interference fit with the rotor shaft 81, and the outer ring of the drive bearing 6 is in interference fit with the drive bearing chamber 53. The inner ring of the non-driving bearing 3 is in interference fit with the rotor shaft 81, the outer ring of the non-driving bearing 3 is in clearance fit with the non-driving bearing chamber 51, a clearance is reserved between one side of the outer ring of the non-driving bearing 3 and the bearing outer ring positioning table 52 and used for placing the axial preload piece 4 of the bearing and providing axial preload for the non-driving bearing 3, wherein the axial preload piece 4 is a rubber gasket or a wave-shaped spring gasket and the like.

In addition, the application also discloses a pre-tightening mode of the non-driving bearing, which is specifically shown in fig. 7-9:

the arrangement and structure of the housing 5, the stator 7, the rotor 8, and the non-drive bearing 3 and the drive bearing 6 shown in fig. 7 and 8 can refer to the structure disclosed in the above embodiment, and the description thereof is omitted.

The rotor shaft 81 disclosed in fig. 9 is further provided with a non-driven bearing outer inner ring positioning table 85 between the non-driven bearing positioning table 82 and the thread, and this non-driven bearing outer inner ring positioning table 85 can be used to position the inner ring second side of the non-driven bearing 3 against. Specifically, the inner ring of the non-drive bearing is limited and pre-tightened by the inner ring positioning table 82 of the non-drive bearing and the outer ring positioning table 85 of the non-drive bearing, and the position and the distance between the non-drive bearing 3 and the outer rotating member 9 are limited.

Specifically, an external rotating member 9 is further disposed between the non-driving bearing 3 and the synchronizing wheel 2, specifically, an elastic member 10 for abutting against a second side of an inner ring of the non-driving bearing 3 is disposed between the external rotating member 9 and the non-driving bearing 3, and a rotating member positioning table (the structure of which can refer to fig. 6) for positioning the external rotating member 9 is disposed on the synchronizing wheel 2.

During pre-tightening, the second side of the inner ring of the non-drive bearing 3 is abutted against the external rotating part 9 through the elastic part 10, the first side of the inner ring of the non-drive bearing 3 is in clearance fit with the inner ring positioning table 82 of the non-drive bearing, and meanwhile, the outer ring of the non-drive bearing 3, which is positioned on the first side, is abutted against and limited by the bearing outer ring positioning table 52, so that the axial pre-tightening on the non-drive bearing 3 is realized.

Those skilled in the art will appreciate that the engagement of the drive bearing 6 with the rotor shaft 81 and with the drive bearing chamber 53 is not limited to an interference fit; the fitting of the non-drive bearing 3 with the rotor shaft 81 and with the non-drive bearing chamber 51 is not limited to interference fitting; the fixing device can be in transition fit or clearance fit, and then fixed or limited by other adhesives.

The drive bearing 6 referred to in this application may be a single row angular contact bearing and the non-drive bearing 3 may be a deep groove ball bearing. The present solution is not limited to the above-mentioned bearings.

On the basis of the technical scheme, the application also discloses an elevator assembly, which comprises an elevator door and a disc motor used for driving the elevator door, wherein the disc motor is the disc motor disclosed in the embodiment, so that the elevator assembly with the disc motor also has all the technical effects, and the details are not repeated herein.

The above only discloses a specific application scenario of the disc motor, and in practice, the disc motor can also be applied to other devices as long as the scenario has requirements on the axial dimension.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" are intended to cover only the explicitly identified steps or elements as not constituting an exclusive list and that the method or apparatus may comprise further steps or elements. An element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A disc motor, comprising: the rotor is rotatably sleeved on the shell through a driving bearing and a non-driving bearing, wherein a rotor shaft is arranged on one side of the rotor, and the driving bearing and the non-driving bearing are assembled on the rotor shaft.

2. The disc motor according to claim 1, wherein a drive bearing inner ring positioning table for being abutted against the inner ring of the drive bearing and a non-drive bearing inner ring positioning table for being opposed to a first side of the inner ring of the non-drive bearing are provided on the rotor shaft in the axial direction.

3. The disc motor according to claim 2, wherein a drive bearing chamber for accommodating the drive bearing and a non-drive bearing chamber for accommodating the non-drive bearing are provided on the housing, and the drive bearing chamber and the non-drive bearing chamber are arranged in an axial direction of the housing, the drive bearing inner ring positioning table is located in the drive bearing chamber, and the non-drive bearing inner ring positioning table is located in the non-drive bearing chamber.

4. The disc motor of claim 3, wherein a bearing outer ring positioning table is provided on the housing for limiting the position of the drive bearing outer ring and the non-drive bearing outer ring, and the bearing outer ring positioning table is located between the drive bearing chamber and the non-drive bearing chamber.

5. The disc motor according to claim 4, further comprising a synchronizing wheel sleeved and fixed at an end of the rotor shaft, wherein the non-driving bearing is located between the synchronizing wheel and the driving bearing.

6. The disc type motor according to claim 5, wherein the synchronizing wheel is provided with a synchronizing wheel positioning table, the second side of the inner ring of the non-driving bearing is limited by the synchronizing wheel positioning table, the first side of the inner ring of the non-driving bearing is limited against the non-driving bearing inner ring positioning table, and the outer ring of the non-driving bearing on the first side is axially pre-tightened with the bearing outer ring positioning table through an axial pre-tightening piece.

7. The disc motor according to claim 5, further comprising an outer rotating member disposed between the synchronous wheel and the non-driving bearing, wherein an elastic member for axially pre-tightening the inner ring of the non-driving bearing is disposed between the outer rotating member and the second side of the inner ring of the non-driving bearing, the first side of the inner ring of the non-driving bearing is in clearance fit with the inner ring positioning table of the non-driving bearing, and the outer ring of the non-driving bearing on the first side abuts against the bearing outer ring positioning table.

8. The disc motor of claim 3, wherein the drive bearing inner race is an interference fit with the rotor shaft and the drive bearing outer race is an interference fit with the drive bearing chamber.

9. The disc motor of claim 3, wherein the inner undriven bearing ring is an interference fit with the rotor shaft and the outer undriven bearing ring is a clearance fit with the undriven bearing chamber.

10. Elevator assembly comprising an elevator door and a disc motor driving the elevator door, characterized in that the disc motor is a disc motor according to any one of claims 1-9.

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