Electric clothes airing machine and power system and assembly type motor thereof

Abstract

The utility model discloses an assembly type motor, which comprises a cylindrical casing, a front end cover and a rear end cover, the front end cover and the rear end cover detachably block two ends of the casing, a rotating shaft extends from the rear end cover to the front end cover and penetrates out of the casing, a first radial bearing is arranged between the rotating shaft and the rear end cover, and a second radial bearing is arranged between the rotating shaft and the rear end cover. And a second radial bearing is arranged between the rotating shaft and the front end cover. The utility model further provides a power system and an electric clothes airing machine adopting the assembly type motor. According to the assembly type motor, the packaging structure of the motor shell is changed, the concentric alignment of the rotating shaft at the front end, the rear end and the driving end becomes easier and controllable, the assembly difficulty of the motor and a driven part is reduced, different types of bearings are adopted at the front end and the rear end of the motor, the advantages of the different types of bearings are combined, and the assembly efficiency is improved. And the problems of insufficient power and short service life possibly existing in an assembly type motor are at least partially overcome.

Description

Technical Field

[0001] This application relates to the field of electric clothes drying rack technology, and more specifically, to an electric clothes drying rack, its power system, and an assembled motor. Background Technology

[0002] Existing electric clothes drying racks require high precision in assembling the motor and gearbox. Furthermore, the use of an integrated motor necessitates pre-assembling the motor and gearbox before the overall assembly of the clothes drying rack, which hinders assembly efficiency. On the other hand, integrated motors present challenges in disassembly and on-site repair during after-sales maintenance, increasing after-sales costs. Utility Model Content

[0003] This application addresses the shortcomings of existing methods by proposing an electric clothes drying rack, its power system, and an assembled motor to solve the technical problems of high assembly difficulty and inconvenient maintenance of the power system in related technologies.

[0004] In a first aspect, this application provides an assembled motor, which includes a cylindrical housing and a front end cover and a rear end cover that detachably seal both ends of the housing. A rotating shaft extends from the rear end cover to the front end cover and passes through the housing. A first radial bearing is disposed between the rotating shaft and the rear end cover, and a second radial bearing is disposed between the rotating shaft and the front end cover.

[0005] Alternatively, a connecting rod may be provided between the front cover and the rear cover to fix the front cover and the rear cover to the housing.

[0006] Furthermore, the inner surface of the front end cover is provided with a first fixing hole for inserting and fixing the end of the connecting rod; the rear end cover is provided with a first screw hole for the connecting rod to pass through and be threaded.

[0007] Alternatively, the first radial bearing may include a sliding bearing with a spherical cap outer contour, and the rear end cover may be provided with a first mounting groove for accommodating the sliding bearing; the central shaft of the sliding bearing may have a first through hole for the rear end of the rotating shaft to be inserted.

[0008] Furthermore, the second radial bearing includes a rolling bearing, which is annular. The front end cover is provided with a second mounting groove for accommodating the rolling bearing. The second mounting groove and the rolling bearing are respectively provided with coaxial through holes for the front end of the rotating shaft to pass through.

[0009] Alternatively, the portion of the rotating shaft extending out of the housing may be provided with a transmission structure.

[0010] Alternatively, the front end cover may have a second fixing hole for fixing the power supply and the driven component, and / or a third fixing hole for mounting the stator assembly.

[0011] Secondly, this application provides a power system including a motor and a gearbox driven by the motor, wherein the motor is an assembled motor as described above.

[0012] Furthermore, the motor and the gearbox are connected in a detachable manner.

[0013] Thirdly, this application provides an electric clothes drying rack, including a main unit and a drying assembly controlled by the main unit, wherein the main unit adopts the assembled motor as described above, or the main unit adopts the power system as described above.

[0014] The beneficial technical effects of the technical solutions provided in this application include:

[0015] (1) The assembled motor of this application changes the packaging structure of the motor housing, making it easier and more controllable to align the shaft at the front end, rear end and drive end, reducing the assembly difficulty of the motor and the driven parts. Furthermore, different types of bearings are used at the front end and rear end of the motor, combining the advantages of different types of bearings, which at least partially overcomes the problems of insufficient power and insufficient service life that may exist in assembled motors.

[0016] (2) The front end cover of the assembled motor of this application has an important positioning function, including but not limited to positioning the center line of the rotating shaft, positioning the stator assembly inside the motor, and positioning the assembly position of the driven component and the motor.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 An exploded view of the power system of an electric clothes drying rack provided in an embodiment of this application;

[0020] Figure 2 A longitudinal sectional view of the power system of an electric clothes drying rack in its assembled state, provided for an embodiment of this application;

[0021] Figure 3This is a perspective view of the assembly state of the power system of an electric clothes drying rack provided in an embodiment of this application, wherein some structural parts are hidden to show the assembly relationship of the front cover, rear cover, rotating shaft and connecting parts;

[0022] Figure 4 for Figure 3 A schematic diagram of the decomposed structure;

[0023] Figure 5 for Figure 4 A three-dimensional structural diagram of the rear end cover and sliding bearing;

[0024] Figure 6 for Figure 4 A three-dimensional structural diagram of the front cover. Detailed Implementation

[0025] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0026] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0028] refer to Figures 1-6 This application provides an assembled motor, which includes a cylindrical housing 1 and a front cover 2 and a rear cover 3 that detachably seal both ends of the housing 1. A rotating shaft 4 extends from the rear cover 3 to the front cover 2 and passes through the housing 1. Thus, the rotating shaft 4 serves as one of the rotor components in the motor, with one end of the rotating shaft 4 extending out of the housing 1 serving as the driving end and the other end as the non-driving end. As one possible implementation, the rotor component and stator component 8 in the assembled motor of this application can be assembled in the manner of a brushed motor or a brushless motor. The driving method between the rotor component and the stator component 8 does not affect the inventive nature of this application.

[0029] Furthermore, a first radial bearing, which can be a sliding bearing 5, is configured between the rotating shaft 4 and the rear end cover 3. A second radial bearing, which can be a rolling bearing 6, is configured between the rotating shaft 4 and the front end cover 2. Rolling bearing 6 and sliding bearing 5 are two different types of radial bearings. Radial bearings are mainly used to bear radial loads, but rolling bearing 6 and sliding bearing 5 differ significantly in structure, working principle, and application scenarios. Structurally, rolling bearing 6 consists of an inner ring, an outer ring, rolling elements (such as balls or rollers), and a cage. The rolling elements roll between the inner and outer rings, and the cage is used to evenly separate the rolling elements and prevent direct contact. Sliding bearing 5 is usually an integral structure, with the journal (shaft portion) and bearing shell (bearing housing portion) in direct contact. The inner surface of the bearing shell may have oil grooves or oil holes, relying on lubricant (oil or grease) to reduce friction. From a working principle perspective, rolling bearing 6 transmits load through the rolling friction of the rolling elements, resulting in a low coefficient of friction, making it suitable for high-speed applications. The rolling elements distribute contact pressure, but gaps exist, potentially causing vibration. Sliding bearing 5 relies on the sliding friction between the journal and the bearing bush, resulting in a larger contact surface. Continuous lubrication is required to form an oil film that isolates the metal contact (hydrodynamic lubrication). Its characteristics include the ability to design an even larger contact surface, making it suitable for withstanding impact loads. In summary, rolling bearing 6 is chosen for applications requiring high speed, standardization, and low maintenance, and is suitable for the drive end of shaft 4. Sliding bearing 5 is chosen for applications requiring high load capacity, high stability, or a compact design, and is suitable for the non-drive end of shaft 4.

[0030] refer to Figure 1This embodiment applies the assembled motor of this application to a power system, which includes a motor and a gearbox 9 controlled by the motor. The motor is the assembled motor of this application, and the gearbox 9 is used to pull a pair of steel wire ropes 91 moving in opposite directions. One possible implementation is that the steel wire ropes 91 are used to pull the drying components of an electric clothes dryer. In the application scenario of this embodiment, the front end of the assembled motor (i.e., the front end of the shaft 4) is used to mesh with the transmission gear 93 of the gearbox 9 to drive the steel wire ropes 91 to wind or unwind. The front end of the assembled motor can be detachably assembled with the housing of the gearbox 9. Thus, a rolling bearing 6 is configured at the front end of the assembled motor, that is, the front end cover 2 is used as a mounting bracket to configure the rolling bearing 6 to reduce the frictional resistance at the front end of the shaft 4. Thus, the rolling bearing 6 can provide high stability and high load-bearing capacity rotation conditions, which can meet the usage requirements of the drive end of the shaft 4. The rear end of the assembled motor (the rear end of the shaft 4) needs to be aligned with the front end to ensure the meshing matching between the transmission structure 41 at the front end of the shaft 4 and the transmission gear 93. The alignment method includes ensuring the concentricity of the front and rear ends of the shaft 4. Therefore, a sliding bearing 5 is configured at the rear end of the assembled motor, that is, the rear end cover 3 is used as the mounting bracket to configure the sliding bearing 5. This provides necessary friction protection while improving the flexibility of concentric alignment between the rear end and the front end of the shaft 4, and reducing the assembly difficulty of the motor itself and the gearbox 9 (and other driven components).

[0031] Specifically, refer to Figure 2 , 4 6. The rolling bearing 6 is annular, and its inner ring is tightly connected to the outer circumference of the shaft 4. The front cover 2 is configured as a flat cover with an outer contour consistent with the cross-sectional contour of the housing 1. The center of the front cover 2 is recessed into the housing 1 to form a second mounting groove 22 for accommodating the rolling bearing 6. The second mounting groove 22 has a second through hole 23 coaxial with the inner ring of the rolling bearing 6, so that the shaft 4 can pass through the front cover 2. Optionally, the diameter of the second through hole 23 is not less than that of the inner ring of the rolling bearing 6 to avoid friction between the shaft 4 and the front cover 2. Furthermore, the depth of the second mounting groove 22 can be slightly smaller than the thickness of the rolling bearing 6. Thus, the second mounting groove 22 can, together with the mating groove 94 at the motor mounting position of the driven component, form a space that can completely accommodate the rolling bearing 6, improving the stability and reliability of the torque output of the shaft 4.

[0032] refer to Figure 2 , 45. The outer contour of the sliding bearing 5 is a spherical cap. Furthermore, the spherical cap is formed by cutting the mother ball with a pair of parallel planes. Such a spherical cap has a top surface 52 and a bottom surface 53 that are parallel to each other, and a first through hole 51 is formed through the top surface 52 and the bottom surface 53 for inserting the rear end of the rotating shaft 4 to support the rear end of the rotating shaft 4. Therefore, the diameters of the top surface 52 and the bottom surface 53 are not less than the cross-sectional diameter of the rotating shaft 4. The distances of the top surface 52 and the bottom surface 53 from the center of the mother ball can be adjusted according to the assembly requirements. In this embodiment, the distances of the top surface 52 and the bottom surface 53 from the center of the mother ball are basically the same, so the diameters of the top surface 52 and the bottom surface 53 are also basically the same. The rear cover 3 is equipped with a first mounting groove 32 for accommodating the sliding bearing 5. The first mounting groove 32 can protrude outward relative to the body of the rear cover 3. The sliding bearing 5 being assembled outside the main body space of the housing 1 has several advantages, including but not limited to: improving the utilization rate of the main body space of the housing 1 and reducing the volume of the main body of the housing 1; facilitating heat dissipation of the sliding bearing 5; and facilitating the replacement of the sliding bearing 5.

[0033] refer to Figure 3 , 4 6. To further simplify the assembly structure of the assembled motor of this application and improve assembly accuracy and efficiency, a connecting rod 7 is provided between the front cover 2 and the rear cover 3, so that the front cover 2 and the rear cover 3 are respectively fixed to the housing 1. The front end of the connecting rod 7 is a countersunk nut structure 71, and the front section close to the countersunk nut structure 71 is threaded to form a threaded section 72. The rear end is a flat head structure 73. In use, it is inserted through the outer surface of the rear cover 3 and then longitudinally penetrates the housing 1 to reach the inner surface of the front cover 2. After the front cover 2 is fixed (for example, fixed to the driven component), the housing 1 and the rear cover 3 of the assembled motor can be fixedly closed by the connecting rod 7. No other connecting structures are required between the housing 1 and the front cover 2, or between the housing 1 and the rear cover 3. Correspondingly, the rear cover 3 is provided with a through first threaded hole 31 for the connecting rod 7 to pass through and be threaded, and the inner surface of the front cover 2 is provided with a first fixing hole 21 for the end of the connecting rod 7 to be inserted and fixed.

[0034] refer to Figure 6The front cover 2 also has a second fixing hole 24 for fixing to the driven component. When assembling the assembled motor with the driven component, the front cover 2 and some motor components can be fixed to the driven component first, followed by the installation of the housing 1 and the rear cover 3. This facilitates the correction of the concentricity of the shaft 4, the front cover 2, and the rear cover 3. In this embodiment, the second fixing hole 24 is configured as a screw hole, connected to the driven component by screws. The front cover 2 also has a third fixing hole 25 for mounting to the stator assembly 8. According to related technology disclosures, the stator assembly 8 is assembled based on a mounting base, maintaining an appropriate distance between the stator assembly 8 and the rotor assembly. In this embodiment, the front cover 2 is connected to the mounting base by screws. Therefore, both the front cover 2 and the mounting base have fixing holes for the screws to pass through. The hole on the front cover 2 is defined as the third fixing hole 25. To facilitate screw fixing, the third fixing hole 25 can be configured as a screw hole.

[0035] In this embodiment, a reduction gearbox 9 is connected to and driven by the assembled motor. The reduction gearbox 9 includes a pair of winding wheels 92 rotating in opposite directions. The winding wheels 92 and the rotating shaft 4 are driven by a transmission gear 93. The winding wheels 92 and the transmission gear 93 are encapsulated as a single unit. A docking slot 94 is reserved on the outside of the reduction gearbox 9 for assembly with the motor. This docking slot 94 is used for the front end cover 2 of the assembled motor and the transmission structure 41 of the rotating shaft 4 to dock with the reduction gearbox 9. In this embodiment, the transmission structure 41 of the rotating shaft 4 is configured as a worm gear, forming a worm gear transmission system with the transmission gear 93. Furthermore, the transmission gear 93 can also form a gear transmission system with the winding wheels 92. Therefore, the transmission gear 93 should be configured with helical gears that can mesh with the worm gear and spur gears that can mesh with the winding wheels 92 respectively. A common implementation is to coaxially mount the helical gears and spur gears to meet the aforementioned transmission requirements. In other embodiments, the transmission structure 41 of the gearbox 9 can be adjusted to suit the application scenario. For example, only one winding wheel 92 can be provided, or two or more winding wheels 92 can be provided. The transmission gear 93 can also be replaced by other transmission systems.

[0036] The power system can be assembled in the following manner:

[0037] The front end cover 2, rolling bearing 6, and shaft 4 are pre-assembled and installed into the mating groove 94 of the gearbox 9. Specifically, the transmission structure 41 of the shaft 4 is positioned into the transmission gear 93 of the gearbox 9, and then the front end cover 2 is connected to the mating groove 94 to ensure accurate positioning of the rolling bearing 6. Other components of the assembled motor, except for the housing 1 and the rear end cover 3, can also be completed before the aforementioned pre-assembly steps. These components include at least the stator assembly 8 connected to the front end cover 2, the commutator connected to the shaft 4, and the heat dissipation assembly adapted to the shaft 4. The next step is to assemble the housing 1 and the rear end cover 3. A connecting rod 7 is inserted from the rear end cover 3 to encapsulate the entire assembled motor. Before tightening the connecting rod 7, the installation angle of the shaft 4 needs to be adjusted to ensure that the installation accuracy of the shaft 4 meets the requirements. When the assembled motor needs to be disassembled and repaired, the rear end cover 3 and the housing 1 can be removed after loosening the connecting rod 7, so as to expose the internal components of the assembled motor for inspection and replacement. If the rolling bearing 6 needs to be replaced, the front end cover 2 needs to be further removed from the docking groove 94.

[0038] The assembled motor of this application can be assembled in steps during assembly and disassembly, which improves the assembly flexibility of the assembled motor and facilitates maintenance.

[0039] This application also provides an electric clothes drying rack, which includes a main unit and a drying assembly controlled by the main unit. The aforementioned power system serves as the power source for controlling the lifting and lowering of the drying assembly. The power system is installed in the main unit, and the steel wire rope 91 led out from the power system is anchored on both sides of the drying assembly or at the lifting balance point. The working state of the drying assembly is controlled by controlling the forward and reverse rotation, speed and stopping time of the assembled motor.

[0040] In summary, this application provides an assembled motor, comprising a cylindrical housing and a front and rear cover removably sealing both ends of the housing. A rotating shaft extends from the rear cover to the front cover and exits the housing. A first radial bearing is disposed between the rotating shaft and the rear cover, and a second radial bearing is disposed between the rotating shaft and the front cover. This application also provides a power system and an electric clothes dryer using this assembled motor. The assembled motor of this application changes the packaging structure of the motor housing, making the concentric alignment of the rotating shaft at the front, rear, and drive ends easier and more controllable, reducing the assembly difficulty of the motor and the driven components. Furthermore, by using different types of bearings at the front and rear ends of the motor, it combines the advantages of different types of bearings, at least partially overcoming the problems of insufficient power and short service life that may exist in assembled motors.

[0041] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in related technologies that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0042] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0046] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A prefabricated motor, characterized in that, It includes a cylindrical housing and a front cover and a rear cover that detachably seal both ends of the housing. A rotating shaft extends from the rear cover to the front cover and passes through the housing. A first radial bearing is disposed between the rotating shaft and the rear cover, and a second radial bearing is disposed between the rotating shaft and the front cover.

2. The assembled motor as described in claim 1, characterized in that, A connecting rod is provided between the front cover and the rear cover to fix the front cover and the rear cover to the housing.

3. The assembled motor as described in claim 2, characterized in that, The inner surface of the front end cover is provided with a first fixing hole for inserting and fixing the end of the connecting rod; the rear end cover is provided with a first screw hole for the connecting rod to pass through and be threaded.

4. The assembled motor as described in claim 1, characterized in that, The first radial bearing includes a sliding bearing with a spherical cap outer contour. The rear end cover is provided with a first mounting groove for accommodating the sliding bearing. The central shaft of the sliding bearing has a first through hole for the rear end of the rotating shaft to be inserted.

5. The assembled motor as described in claim 1, characterized in that, The second radial bearing includes a rolling bearing, which is annular. The front end cover is provided with a second mounting groove for accommodating the rolling bearing. The second mounting groove and the rolling bearing are respectively provided with coaxial through holes for the front end of the rotating shaft to pass through.

6. The assembled motor as described in claim 1, characterized in that, The portion of the rotating shaft that extends out of the housing is equipped with a transmission structure.

7. The assembled motor as described in claim 1, characterized in that, The front end cover is provided with a second fixing hole for fixing the power supply and the driven component, and / or a third fixing hole for mounting the stator assembly.

8. A power system comprising an electric motor and a gearbox driven by the electric motor, characterized in that, The motor is an assembled motor as described in any one of claims 1 to 7.

9. The power system as described in claim 8, characterized in that, The motor and gearbox are connected in a detachable manner.

10. An electric clothes drying rack, comprising a main unit and a drying assembly controlled by the main unit, characterized in that, The main unit adopts the assembled motor as described in any one of claims 1-7, or the main unit adopts the power system as described in claim 8 or 9.

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