Motor convenient to assemble

Abstract

The utility model relates to the technical field of motors, and discloses a motor convenient to assemble, which comprises a stator assembly and a rotor assembly, and is characterized in that the stator assembly comprises an annular shell with a containing through groove in the center, a containing cavity formed in the annular shell in a hollow manner, and a stator assembly arranged in the containing cavity; the rotor assembly comprises a mounting frame, a rotating shaft and a rotor assembly, the rotating shaft is concentrically and rotatably connected with the mounting frame, the rotor assembly is concentrically and fixedly arranged at one end of the rotating shaft, can be inserted into the containing through groove and rotates in the containing through groove, and after the rotor assembly is assembled in the containing through groove, the mounting frame and the annular shell are connected through a fixing structure; according to the motor, the stator assembly and the rotor assembly are separately assembled and then are connected through the fixing structure to form an assembly line, a worker only needs to master a single assembly technology, the proficiency rate is increased, the efficiency is improved, and meanwhile the confidentiality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor which is easy to assemble. Background Art

[0002] A Chinese patent with application number 201920357692.3 discloses a flat DC permanent magnet coreless brushless motor for ultra-thin DVDs, comprising a rotor part, a stator part, an end cover part and a casing part, wherein the stator part is provided with a plurality of hollow triangular coils and is welded to a PCB board; the hollow part of the PCB board is mounted on the end cover part; the end cover part is provided with a bearing seat riveted to the PCB board; the end cover bearing is pressed into the bearing seat; the rotor part is provided with a motor shaft and multi-stage NdFeB magnets; the casing part is a casing and a casing bearing arranged in the center hole of the casing; the rotor part, the stator part, the end cover part and the casing part are placed in the casing with the motor shaft as the center axis to be riveted into a motor.

[0003] This solution requires that the rotor part, stator part, end cover part and casing part be placed into the casing with the motor shaft as the center axis, and finally riveted to complete the assembly. The assembly process involves complicated parts, is prone to errors, is inefficient, and has poor confidentiality. Utility Model Content

[0004] The utility model provides a motor that is easy to assemble, aiming at the shortcomings of the prior art that the motor assembly process has complicated parts, is prone to errors, has low efficiency, and has poor confidentiality.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A motor that is easy to assemble includes a stator assembly and a rotor assembly. The stator assembly includes an annular shell with a accommodating slot in the center, a accommodating chamber formed hollow inside the annular shell, and a stator component arranged in the accommodating chamber. The rotor assembly includes a mounting frame, a rotating shaft connected to the mounting frame for coaxial rotation, and a rotor component that is coaxially fixed at one end of the rotating shaft and can be inserted into the accommodating slot and rotate in the accommodating slot. When the rotor assembly is assembled in the accommodating slot, the mounting frame and the annular shell are connected by a fixed structure.

[0007] With the above solution, the stator assembly is assembled in the annular shell, and can be transported separately under the protection of the annular shell. The rotor assembly is fixed on one end of the rotating shaft and the rotating shaft is rotatably connected to the mounting frame. The rotor assembly can also be installed and transported separately. During assembly, the end of the rotating shaft with the rotor assembly is inserted into the accommodating slot. At this time, the end of the mounting frame close to the rotor assembly is also inserted into the accommodating slot. The end of the mounting frame away from the rotor assembly and the end of the rotating shaft away from the rotor assembly are located outside the accommodating slot. At this time, the mounting frame is fixed to the annular shell through a fixing structure to complete the assembly of the motor. After the stator assembly and the rotor assembly are assembled separately, they are connected through a fixing structure to form an assembly line. Workers only need to master a single assembly technology, which improves proficiency and efficiency while also improving confidentiality.

[0008] In addition, the rotating shaft in the prior art realizes the rotation connection with the casing through the end cover bearing on the end cover and the casing bearing on the casing, but in order to install the end cover bearing and the casing bearing, the end cover and the casing both need to reserve enough installation space for two bearings, which makes the thickness of the motor larger. In this solution, the mounting frame is fixedly installed in the accommodating groove of the annular casing through a fixing structure, and the rotating shaft is rotationally connected to the mounting frame, so there is no need to set up another installation space for installing the bearing, so that the thickness is reduced.

[0009] Preferably, the fixing structure comprises a fixing plate which is fixedly sleeved on the outer ring wall of the mounting frame and fixedly connected to one end of the annular shell.

[0010] By adopting the above solution, the mounting frame is fixedly connected to the fixing plate, and the fixing plate is fixedly connected to the annular shell, thereby achieving a fixed connection between the mounting frame and the annular shell.

[0011] Preferably, the fixing plate and the mounting frame are fixedly connected via a riveting structure.

[0012] Preferably, the riveting structure includes a connecting ring extending vertically outward on the outer ring wall of the mounting frame and a deformation buckle provided on the outer ring wall of the mounting frame, which deforms downward when the fixing plate is overlapped on the connecting ring so that the fixing plate is riveted to the mounting frame.

[0013] By adopting the above scheme, the fixing plate is sleeved on the mounting frame and then overlapped on the connecting ring, at which time the deformable buckle is driven to deform and abut against the upper end surface of the fixing plate. Under the clamping of the deformable buckle and the connecting ring, the fixing ring and the mounting frame are fixedly connected.

[0014] Preferably, a plurality of deformable buckles are evenly spaced around the circumference of the mounting frame.

[0015] By adopting the above solution, a number of connections are provided to ensure the connection strength between the fixing plate and the mounting frame.

[0016] Preferably, the rotating shaft and the mounting frame are rotationally connected via a bearing, and at least one bearing is provided on the inner ring wall of the mounting frame at intervals along the axial direction of the rotating shaft.

[0017] By adopting the above solution, only one bearing is required to realize the rotational connection between the rotating shaft and the mounting frame, and multiple bearings are provided to make the rotation of the rotating shaft more stable.

[0018] Preferably, a blocking piece for sealing the accommodating through groove is provided on one end of the annular shell away from the fixing plate.

[0019] With the above solution, the blocking piece blocks the accommodating slot, thereby reducing the contact between the rotor assembly and the external environment, and also reducing the entry of dust and other impurities into the accommodating slot to affect the rotation of the rotor assembly.

[0020] The utility model has significant technical effects due to the adoption of the above technical solutions:

[0021] 1. The stator assembly and the rotor assembly are assembled separately and then connected through a fixed structure to form an assembly line. Workers only need to master a single assembly technique, which improves proficiency and efficiency while also improving confidentiality;

[0022] 2. The mounting frame is fixedly mounted on the annular housing through a fixing plate, and the bearing is mounted on the mounting frame. The housing does not need to reserve space for mounting the bearing, thereby reducing the thickness of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an axonometric view of a motor that is easy to assemble in an embodiment;

[0024] Figure 2 is a top view of a motor that is easy to assemble in an embodiment;

[0025] Figure 3 yes Figure 2 Sectional view at AA;

[0026] Figure 4 yes Figure 3 The enlarged view of point B in the figure;

[0027] Figure 5 is a disassembled diagram of a motor in an embodiment that is easy to assemble;

[0028] Figure 6 yes Figure 5 Enlarged view of point C in the figure.

[0029] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. annular shell; 2. accommodating groove; 3. accommodating chamber; 4. mounting frame; 5. rotating shaft; 6. rotor assembly; 601. rotor core; 602. magnetic steel; 7. fixing plate; 8. connecting ring; 9. deformation buckle; 10. bearing; 11. baffle. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Example

[0032] A motor that is easy to assemble, referring to Figures 1 to 6 , including a stator assembly and a rotor assembly. The stator assembly includes an annular housing 1. The center of the annular housing 1 is a receiving slot 2. The annular housing 1 has an receiving chamber 3 inside for installing a stator assembly. The stator assembly is a prior art, not shown in the figure, and will not be described here. The stator assembly is assembled in the annular housing 1 and is protected by the annular housing 1, so that the stator assembly can be assembled and transported separately.

[0033] The rotor assembly includes a mounting frame 4, which is arranged in an annular shape. A bearing 10 is arranged on the inner ring wall of the mounting frame 4, and the rotating shaft 5 is rotatably connected to the mounting frame 4 through the bearing 10. At least one bearing 10 is arranged on the inner ring wall of the mounting frame 4 along the axial direction of the rotating shaft 5. One bearing 10 can realize the rotation connection between the rotating shaft 5 and the mounting frame 4. A plurality of bearings 10 are arranged to make the rotation of the rotating shaft 5 more stable. In this embodiment, two bearings are arranged. A rotor assembly 6 is fixedly connected to one end of the rotating shaft 5. The rotor assembly 6 is fixed to one end of the rotating shaft 5 and the rotating shaft 5 is rotatably connected to the mounting frame 4. The rotor assembly can also be assembled and transported separately. The rotor assembly 6 includes a rotor core 601 concentrically fixedly sleeved on the rotating shaft 5 and a magnetic steel 602 concentrically fixedly sleeved on the rotor core 601. The magnetic steel 602 is fixed to the rotor core 601 by glue.

[0034] During assembly, the end of the rotating shaft 5 with the rotor assembly 6 installed is inserted into the accommodating slot 2, and the end of the mounting frame 4 close to the rotor assembly 6 is also inserted into the accommodating slot 2, and the end of the mounting frame 4 away from the rotor assembly 6 and the end of the rotating shaft 5 away from the rotor assembly 6 are located outside the accommodating slot 2. At this time, the mounting frame 4 is fixed to the annular housing 1 through the fixing structure, and the motor assembly can be completed.

[0035] The stator assembly and the rotor assembly are assembled separately and then connected through a fixed structure to form an assembly line. Workers only need to master a single assembly technique, which improves proficiency and efficiency while also improving confidentiality.

[0036] In addition, the rotating shaft 5 in the prior art realizes the rotation connection with the casing through the end cover bearing on the end cover and the casing bearing on the casing, but in order to install the end cover bearing and the casing bearing, the end cover and the casing both need to reserve enough installation space for two bearings, which makes the thickness of the motor larger. In this solution, the mounting frame 4 is fixedly installed in the receiving groove 2 of the annular housing 1 through a fixing structure, and the bearing 10 is installed on the inner ring wall of the mounting frame 4, so there is no need to set up another installation space for installing the bearing 10, so that the thickness of the motor is reduced.

[0037] The fixing structure includes a fixing plate 7, which is fixedly sleeved on the outer ring wall of the mounting frame 4 through a riveting structure and fixedly connected to one side end surface of the annular shell 1 to achieve a fixed connection between the mounting frame 4 and the annular shell 1.

[0038] The riveting structure includes a connecting ring 8 extending vertically outward on the outer ring wall of the mounting frame 4, and the fixing plate 7 is sleeved on the mounting frame 4 and overlapped on the connecting ring 8; it also includes a deformation buckle 9, which is arranged on the outer ring wall of the mounting frame 4 and located above the connecting ring 8. When the fixing plate 7 overlaps the connecting ring 8, the deformation buckle 9 is driven to deform and abut against the upper end surface of the fixing plate 7. Under the clamping of the deformation buckle 9 and the connecting ring 8, the fixing ring and the mounting frame 4 are fixedly connected. Several deformation buckles 9 are evenly spaced around the circumference of the mounting frame 4 to ensure the connection strength between the fixing plate 7 and the mounting frame 4.

[0039] A baffle 11 is provided on one end of the annular housing 1 away from the fixing plate 7 to seal the accommodating slot 2. The baffle 11 blocks the accommodating slot 2, reduces the contact between the rotor assembly and the external environment, and also reduces the entry of dust and other impurities into the accommodating slot 2 to affect the rotation of the rotor assembly 6.

[0040] The stator assembly and the rotor assembly are assembled separately and then connected by a fixing plate 7 to form an assembly line. Workers only need to master a single assembly technique, which improves proficiency and efficiency while also improving confidentiality. The mounting frame 4 is fixedly mounted on the annular housing 1 through the fixing plate 7, and the bearing 10 is mounted on the inner ring wall of the mounting frame 4. The rotating shaft 5 is rotatably connected to the mounting frame 4 through the bearing 10, and there is no need to reserve additional space for installing the bearing 10, thereby reducing the thickness of the motor.

[0041] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A motor that is easy to assemble, comprising a stator assembly and a rotor assembly, characterized in that: The stator assembly comprises an annular shell (1) having a receiving slot (2) at the center, a receiving chamber (3) formed hollow inside the annular shell (1), and a stator component arranged in the receiving chamber (3); the rotor assembly comprises a mounting frame (4), a rotating shaft (5) connected to the mounting frame (4) for rotation coaxially, and a rotor component (6) fixedly arranged coaxially at one end of the rotating shaft (5) and capable of being inserted into the receiving slot (2) and rotating in the receiving slot (2); when the rotor component (6) is assembled in the receiving slot (2), the mounting frame (4) and the annular shell (1) are connected via a fixed structure.

2. A motor that is easy to assemble according to claim 1, characterized in that: The fixing structure comprises a fixing plate (7) which is fixedly sleeved on the outer ring wall of the mounting frame (4) and fixedly connected to one end of the annular shell (1).

3. A motor that is easy to assemble according to claim 2, characterized in that: The fixing plate (7) and the mounting frame (4) are fixedly connected via a riveting structure.

4. A motor that is easy to assemble according to claim 3, characterized in that: The riveting structure comprises a connecting ring (8) extending vertically outwardly on the outer ring wall of the mounting frame (4) and a deformation buckle (9) arranged on the outer ring wall of the mounting frame (4) and deforming downward when the fixing plate (7) is overlapped on the connecting ring (8) so that the fixing plate (7) is riveted to the mounting frame (4).

5. A motor that is easy to assemble according to claim 4, characterized in that: A plurality of deformation buckles (9) are evenly spaced around the mounting frame (4) in the circumferential direction.

6. The motor that is easy to assemble according to claim 1, characterized in that: The rotating shaft (5) and the mounting frame (4) are rotatably connected via a bearing (10), and at least one bearing (10) is arranged on the inner ring wall of the mounting frame (4) along the axial direction of the rotating shaft (5) at intervals.

7. The motor that is easy to assemble according to claim 1, characterized in that: The rotor assembly (6) comprises a rotor core (601) which is coaxially fixedly sleeved on the rotating shaft (5) and a magnetic steel (602) which is coaxially fixedly sleeved on the rotor core (601).

8. The motor that is easy to assemble according to claim 1, characterized in that: A blocking sheet (11) for sealing the accommodating through groove (2) is provided on one end of the annular housing (1) away from the fixing plate (7).

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