A motor structure capable of eliminating axial assembly gap

Abstract

The utility model discloses an embodiment of motor structure can eliminate axial assembly gap, including stator unit, rotor unit, washer subassembly, the stator unit cover in rotor unit one end, the stator unit with the rotor unit surrounds and forms the accommodation cavity, washer subassembly includes the bearing piece of cover in rotor unit one end, installs the bearing cover plate on stator unit, is fixed in the wave washer between bearing piece with bearing cover plate, bearing piece, wave washer is located in the accommodation cavity. The utility model discloses through the assembly mode of bearing piece rear loading, realizes the reservation of axial space required by wave washer, reaches the purpose of eliminating axial gap, can realize quick assembly simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of motors, and in particular to a motor structure that can eliminate axial assembly clearance. Background Technology

[0002] An electric motor is a high-precision motor that converts input voltage signals into precise mechanical displacement or position. Electric motors are widely used in automated control systems, such as robots, CNC machine tools, and automated assembly lines, which require precise control of the position, speed, and acceleration of mechanical components. An electric motor mainly consists of a rotor, stator, encoder, driver, and bearings, and possesses closed-loop control characteristics, enabling high-speed and fast-response motion control.

[0003] Currently, the axial clearance of motors and other drive products in China is eliminated by first pre-installing corrugated shims inside the motor within the bearing housing of the front cover, and then assembling the motor rotor with the front cover. However, some motors cannot pre-install space for corrugated shims on the front cover, resulting in the inability to eliminate axial clearance and inconvenience in production and assembly. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is that the existing motor structure cannot reserve space for the installation of the waveform gasket on the front end cover in advance, which makes it impossible to eliminate the axial clearance.

[0005] To address the aforementioned problems, this utility model provides a motor structure capable of eliminating axial assembly clearance, comprising a stator unit, a rotor unit, and a washer assembly. The stator unit is fitted onto one end of the rotor unit, and the stator unit and the rotor unit form a receiving cavity. The washer assembly includes a bearing component fitted onto one end of the rotor unit, a bearing cover plate mounted on the stator unit, and a corrugated washer fixed between the bearing component and the bearing cover plate. The bearing component and the corrugated washer are located within the receiving cavity.

[0006] Optionally, the stator unit includes a stator component and a brake connected to one side of the stator component.

[0007] Optionally, the motor structure that eliminates axial assembly clearance also includes a reducer connected to the front end of the stator body.

[0008] Optionally, the rotor unit includes a shaft and a motor rotor, one end of the shaft is connected to the reducer, and the other end extends into the stator and brake.

[0009] Optionally, the stator component includes a stator body, a stator frame disposed within the stator body, and a stator core. The outer surface of the motor rotor is spaced apart from the inner surface of the stator core.

[0010] Optionally, the bearing component and the corrugated washer are both fitted onto the shaft, with the corrugated washer located between the bearing component and the bearing cover plate.

[0011] Optionally, the bearing cover plate is provided with a plurality of screw through holes, through which the bearing cover plate is locked to the housing inside the stator body.

[0012] Optionally, a rubber-coated wheel is mounted on the outside of the reducer.

[0013] Optionally, the motor structure that eliminates axial assembly clearance also includes an encoder housing that covers the stator unit and the rotor unit.

[0014] Optionally, the receiving cavity is enclosed by the shaft and the brake.

[0015] Compared with the prior art, the technical effects achieved by the embodiments of this utility model include:

[0016] This utility model embodiment achieves the reservation of the axial space required for the wave washer by using the assembly method of post-installation of bearing components, thereby eliminating the purpose of axial clearance; the wave washer can be quickly installed and fixed by bearing components and bearing cover plates, simplifying the assembly process of the overall structure and effectively improving production assembly efficiency;

[0017] It has a simple structure and is highly practical. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 This is a three-dimensional structural diagram of the motor structure that can eliminate axial assembly clearance according to the present invention.

[0022] Figure 2 for Figure 1 Cross-sectional view after passing through line AA.

[0023] Figure 3 This is a three-dimensional structural diagram of the stator unit, rotor unit, washer assembly, etc. of this utility model.

[0024] Figure 4 for Figure 3 A 3D structural diagram after removing the brake section.

[0025] Figure Labels

[0026] 1. Stator unit; 10. Brake; 11. Stator component; 110. Stator body; 111. Stator core; 112. Control board; 2. Rotor unit; 20. Shaft; 21. Motor rotor; 3. Reducer; 4. Encoder; 5. Encoder housing; 6. Washer assembly; 60. Bearing component; 61. Bearing cover plate; 62. Wave washer; 63. Screw through hole; 7. Receiving cavity; 8. Protective body; 9. Protective sleeve. Detailed Implementation

[0027] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Similar component reference numerals in the drawings represent similar components. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0029] It should also be understood that the terminology used in this specification of embodiments of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of the present invention. As used in this specification of embodiments of the present invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0030] Please refer to Figure 1-4This utility model proposes a motor structure that can eliminate axial assembly clearance. By using a rear-mounted bearing component 60, the required axial space for the waveform washer 62 is reserved, thereby eliminating axial clearance. Simultaneously, it enables rapid assembly, effectively simplifying the production assembly process and improving assembly efficiency. Specifically, the motor structure that can eliminate axial assembly clearance includes a stator unit 1, a rotor unit 2, a reducer 3, an encoder 4, an encoder housing 5 covering the stator unit 1 and rotor unit 2, and a washer assembly 6, which is also located inside the encoder housing 5. The reducer 3, rotor unit 2, stator unit 1, washer assembly 6, and encoder 4 are arranged sequentially from the rear end to the front end. Specifically, any encoder 4 in the prior art that can achieve the function of the encoder 4 in this utility model can be applied to this utility model to realize its function.

[0031] In this utility model, the stator unit 1 is sleeved on one end of the rotor unit 2, and the stator unit 1 and the rotor unit 2 form a receiving cavity 7; the washer assembly 6 includes: a bearing member 60 sleeved on one end of the rotor unit 2, a bearing cover plate 61 installed on the stator unit 1, and a wave washer 62 fixed between the bearing member 60 and the bearing cover plate 61, and the bearing member 60 and the wave washer 62 are located in the receiving cavity 7. During production, the rotor unit 2 and the reducer 3 are first assembled, and the two parts are locked together with screws or other fasteners. Then, one end of the rotor unit 2 is placed into the stator unit 1 to connect the two. Next, the bearing component 60 is pressed into the receiving cavity 7, so that the bearing component 60 is fitted onto the shaft of the rotor unit 2. Then, the wave washer 62 is placed on the bearing component 60, and one side of the wave washer 62 is pressed down by the bearing cover plate 61. Finally, the bearing cover plate 61 is locked onto the stator unit 1 to fix the wave washer 62, completing the installation of the main body. Clearly, this invention can achieve rapid assembly while eliminating axial clearance, resulting in good performance.

[0032] Please continue reading. Figure 2-3 In this utility model, the stator unit 1 includes: a stator component 11 and a brake 10 connected to one side of the stator component 11; specifically, the stator component 11 further includes: a stator body 110, a stator frame and a stator core 111 disposed within the stator body 110. The stator frame is embedded within the stator body 110 and located between the stator core 111 and the stator body 110; the brake 10 is fixedly installed on one end of the stator component 11 by screws, and the encoder cover 5 can cover the stator body 110 and the brake 10 inside it to achieve the purpose of protection.

[0033] Please continue reading. Figure 2-4In this utility model, the rotor unit 2 includes: a shaft 20 and a motor rotor 21. One end of the shaft 20 is connected to the reducer 3, and the other end extends into the stator 11 and the brake 10. The outer surface of the motor rotor 21 contacts the inner surface of the stator core 111. The bearing 60 and the wave washer 62 are both fitted onto the shaft 20. A bearing cover plate is provided on one end of the shaft 20, and the wave washer 62 is located between the bearing 60 and the bearing cover plate. It should be noted that the bearing cover plate 61 is provided with a circular hole, through which the bearing cover plate passes, with its upper surface exposed to the upper side of the bearing cover plate 61. After the bearing cover plate 61 is locked onto the brake 10, the wave washer 62 is fixed by the cooperation between the bearing cover plate 61 and the bearing 60.

[0034] In this embodiment, the receiving cavity 7 is formed by the shaft 20 and the brake 10, that is, the space enclosed by the outer side of the shaft 20 near the brake 10 and the inner side of the brake 10. The wave washer 62 and the bearing 60 are both located in the receiving cavity 7. Due to the reserved space in the receiving cavity 7, the wave washer 62 can be placed immediately after the rotor unit 2 and the stator unit 1 are assembled, thereby eliminating the axial clearance of this type of product.

[0035] Please continue reading. Figure 1-4 The reducer 3 is externally fitted with a rubber-coated wheel; the bearing cover plate 61 is provided with three screw through holes 63, through which the bearing cover plate 61 is locked to the encoder housing 5. In this embodiment, the screw through holes 63 are screws; after the assembly of the washer assembly 6 is completed, the protective body 8 and the encoder housing 5 are further assembled, and the protective sleeve 9 is locked to the encoder housing 5 to achieve the overall connection of the outer shell; therefore, after the protective sleeve 9, the encoder housing 5, and the protective body 8 are connected in sequence, a complete and closed protective outer body structure can be formed, realizing the protection of the overall structure of this utility model, preventing damage to the internal rotor unit 2, stator unit 1, etc., and extending their service life.

[0036] Compared with the prior art, the technical effects achieved by the embodiments of this utility model include:

[0037] This utility model embodiment achieves the reservation of the axial space required for the wave washer by using the assembly method of post-installation of bearing components, thereby eliminating the purpose of axial clearance; the wave washer can be quickly installed and fixed by bearing components and bearing cover plates, simplifying the assembly process of the overall structure and effectively improving production assembly efficiency;

[0038] It has a simple structure and is highly practical.

[0039] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0045] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0046] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A motor structure capable of eliminating axial assembly clearance, characterized in that: The device includes a stator unit, a rotor unit, and a washer assembly. The stator unit is fitted onto one end of the rotor unit, and the stator unit and the rotor unit form a receiving cavity. The washer assembly includes a bearing component fitted onto one end of the rotor unit, a bearing cover plate mounted on the stator unit, and a corrugated washer fixed between the bearing component and the bearing cover plate. The bearing component and the corrugated washer are located within the receiving cavity.

2. The motor structure according to claim 1 that can eliminate axial assembly clearance, characterized in that: The stator unit includes a stator component and a brake connected to one side of the stator component.

3. The motor structure according to claim 2 that can eliminate axial assembly clearance, characterized in that: The motor structure that can eliminate axial assembly clearance also includes a reducer connected to the front end of the stator body.

4. The motor structure according to claim 3 that can eliminate axial assembly clearance, characterized in that: The rotor unit includes a shaft and a motor rotor. One end of the shaft is connected to the reducer, and the other end extends into the stator and brake.

5. The motor structure according to claim 4 that can eliminate axial assembly clearance, characterized in that: The stator component includes a stator body, a stator frame and a stator core disposed within the stator body, wherein the outer side of the motor rotor and the inner side of the stator core are spaced apart.

6. The motor structure according to claim 4 that can eliminate axial assembly clearance, characterized in that: The bearing component and the wave washer are both fitted onto the shaft, with the wave washer located between the bearing component and the bearing cover plate.

7. The motor structure according to claim 4 that can eliminate axial assembly clearance, characterized in that: The bearing cover plate is provided with a number of screw through holes, through which the bearing cover plate is locked to the housing inside the stator body.

8. The motor structure according to claim 4 that can eliminate axial assembly clearance, characterized in that: The reducer is equipped with rubber-coated wheels.

9. The motor structure according to claim 1 that can eliminate axial assembly clearance, characterized in that: The motor structure that eliminates axial assembly clearance also includes an encoder housing that covers the stator unit and the rotor unit.

10. A motor structure capable of eliminating axial assembly clearance according to claim 4, characterized in that: The receiving cavity is formed by the shaft and the brake.

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