Motor with stable operation

Abstract

The invention relates to a motor stable in operation, which comprises a shell, a mounting cavity is arranged in the shell, a stator assembly is arranged in the mounting cavity, and a rotor is arranged in the stator assembly, and is technically characterized in that one end of the rotor is provided with driving teeth, a central shaft is arranged in the mounting cavity, the upper end of the stator assembly is provided with a lower mounting plate, and a middle mounting plate is arranged above the lower mounting plate; an upper cover is arranged above the middle mounting plate, a rotating shaft with the upper end extending out of the upper cover is arranged on the upper cover, the lower end of the rotating shaft extends between the upper cover and the middle mounting plate, driven teeth are arranged at the lower end of the rotating shaft, a center sleeve allowing the upper end of the center shaft to penetrate through and be fixed is arranged in the middle of the middle mounting plate, and a gear assembly driven by driving teeth is arranged between the lower mounting plate and the middle mounting plate; and the output end of the gear assembly extends between the upper cover and the middle mounting plate and is meshed with the driven teeth. The structure is simple, the center shaft is fixedly mounted through the middle mounting plate, shaking is prevented, and movement is stable.

Description

[Technical field]

[0001] The invention relates to an electric motor. [Background technology]

[0002] In some household appliances such as air conditioners and fans, as well as in new energy vehicles, a motor is usually used, which requires low motor speed, low energy consumption, smooth operation and high reliability. At the beginning, considering the small size of the motor and the small transmission mechanism, the motor shaft is usually designed to be eccentric, and the motor shaft is eccentric at the edge, so that the distance between the parts to be driven is reduced, thereby reducing the use of transmission parts. However, the output shaft of this motor is not concentric with the rotor, the operation is unstable, and it is easy to generate vibration and noise. Later, some non-eccentric shafts appeared on the market, such as the patent number 202221457013.8, named an integrated reduction motor and washing machine, which adopts an outer rotor mode, with a complex structure and high cost. [Summary of the invention]

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a motor with a simple structure, low production cost and stable operation.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] A motor with stable operation comprises a housing, a mounting cavity with an upper end opening is provided in the housing, a stator assembly is provided in the mounting cavity, a rotor is provided in the stator assembly, and the stator assembly is characterized in that: an active tooth is provided at one end of the rotor, a central shaft extending vertically and passing through the rotor at the upper end and passing out from the active tooth is provided in the mounting cavity, a lower mounting plate is provided at the upper end of the stator assembly, a middle mounting plate arranged to be spaced apart from the lower mounting plate is provided above the lower mounting plate, an upper cover arranged to be spaced apart from the middle mounting plate and capable of covering the upper end opening of the mounting cavity is provided above the middle mounting plate, a rotating shaft with an upper end extending out of the upper cover is provided on the upper cover, the lower end of the rotating shaft extends between the upper cover and the middle mounting plate, a driven tooth is provided at the lower end of the rotating shaft, a central sleeve is provided in the middle of the middle mounting plate for the upper end of the central shaft to penetrate and be fixed, a gear assembly driven by the active tooth is provided between the lower mounting plate and the middle mounting plate, and the output end of the gear assembly extends between the upper cover and the middle mounting plate and meshes with the driven tooth.

[0006] A motor with stable operation as described above is characterized in that: a connecting column is provided between the middle mounting plate and the lower mounting plate, and the two ends of the connecting column are respectively plugged into the middle mounting plate and the lower mounting plate, and the gear assembly includes a plurality of meshing reduction gear groups and output gear groups, and the two ends of the rotating shaft of the reduction gear group are respectively plugged into the middle mounting plate and the lower mounting plate, and the middle mounting plate is provided with a gear extension hole, and one end of the output gear group extends from the gear extension hole to mesh with the driven teeth.

[0007] A stable running motor as described above is characterized in that: a rotor cavity with upper and lower ends opened is provided in the middle of the stator assembly, the rotor is arranged in the rotor cavity, a plurality of first claws stamped and flanged downward are provided on the lower mounting plate, the plurality of first claws form a circle and are inserted into the rotor cavity, the upper end of the rotor extends into the circle formed by the plurality of first claws, and a plug-in frame extending upward and plugging with the upper cover is provided on the lower mounting plate.

[0008] The motor with stable operation as described above is characterized in that: the upper cover is provided with a plurality of sockets for inserting the ends of the plug-in frame.

[0009] A motor with stable operation as described above is characterized in that: a shaft mounting hole is provided on the upper cover, a shaft sleeve for fitting the shaft is provided in the shaft mounting hole, an upper clamping piece and a lower clamping piece are sleeved on the lower end of the shaft, and the driven gear is sleeved on the lower end of the shaft and clamped between the upper clamping piece and the lower clamping piece.

[0010] The motor with stable operation as described above is characterized in that: a plug-in hole is provided at the lower end of the rotating shaft, and the center sleeve can be inserted into the plug-in hole in a relatively rotatable manner.

[0011] The motor with stable operation as described above is characterized in that: the middle mounting plate is provided with a groove surrounding the center sleeve and formed by downward stamping, and the lower end of the plug hole is inserted into the groove.

[0012] The motor with stable operation as described above is characterized in that: a plurality of second claws formed by upwardly stamping and flanging are provided in the middle of the bottom end of the shell, the plurality of second claws form a circle and are inserted into the rotor cavity, the lower end of the rotor extends into the circle formed by the plurality of second claws, and a central axis hole for inserting and fixing the lower end of the central axis is provided in the circle formed by the plurality of second claws at the center of the bottom end of the shell.

[0013] The beneficial effects of the present invention are as follows: on the one hand, by arranging a lower mounting plate, a middle mounting plate, and an upper cover, the gear assembly is installed between the middle mounting plate and the lower mounting plate, and the driven gear is between the middle mounting plate and the upper cover. This has a compact structure, is easy to install, simplifies the installation process, does not require a special mold for manufacturing, and has a low production cost. On the other hand, the center shaft passes through the center sleeve on the middle mounting plate, which can stabilize the middle part of the center shaft and prevent the center shaft from shaking, thereby preventing the rotor from shaking, allowing the rotor to run stably and reducing noise.

Brief Description of the Drawings

[0014] Figure 1 A perspective view of the present invention;

[0015] Figure 2 is a cross-sectional view of the present invention;

[0016] Figure 3 An exploded view of the present invention;

[0017] Figure 4 It is a three-dimensional diagram of the components of the present invention;

[0018] Figure 5 A three-dimensional diagram of a housing of the present invention;

[0019] Figure 6 A three-dimensional diagram of the middle mounting plate of the present invention; [Specific implementation method]

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0021] like Figures 1 to 5As shown, a motor with stable operation includes a housing 1. In the figure, the housing 1 is approximately hollow cylindrical. A mounting cavity 10 with an upper opening is provided in the housing 1. A stator assembly 2 is provided in the mounting cavity 10. The stator assembly 2 is at the bottom. A coil is provided on the stator assembly 2. A rotor 3 is provided in the stator assembly 2. The rotor 3 has a magnet. One end of the rotor 3 is provided with an active tooth 31. A convex column is integrally formed in the middle of the rotor 3. The active tooth 31 is provided on the outer circumference of the convex column. A central axis 4 extending vertically and having an upper end passing through the rotor 3 and out of the active tooth 31 is provided in the mounting cavity 10. The lower end of the central axis 4 can be fixed to the middle of the bottom wall of the mounting cavity 10 by riveting or the like. An elastic member is provided below the rotor 3 in the mounting cavity 10 to prevent the rotor 3 from hitting the bottom wall of the mounting cavity 10 when rotating left and right under the magnetic force. A lower mounting plate 5 is provided at the upper end of the rotor 3, and a middle mounting plate 6 is provided above the lower mounting plate 5 and is spaced apart from the lower mounting plate 5. The middle mounting plate 6 and the lower mounting plate 5 are connected via a connecting column 56, and the two ends of the connecting column 56 are respectively plugged into the middle mounting plate 6 and the lower mounting plate 5. An upper cover 7 is provided above the middle mounting plate 6 and is spaced apart from the middle mounting plate 6 and can cover the upper end opening of the mounting cavity 10. Two lugs are provided on the upper cover 7 for connection and installation, and the opening edge of the mounting cavity 10 has a positioning groove for the lugs to be inserted. A rotating shaft 71 is provided on the upper cover 7, and the upper end of the rotating shaft 71 extends out of the upper cover 7, and the rotating shaft 71 extends out to drive components. The lower end of the rotating shaft 71 extends between the upper cover 7 and the middle mounting plate 6, and a driven tooth 72 is provided at the lower end of the rotating shaft 71. The upper cover 7 is provided with a rotating shaft mounting hole 74, and a shaft sleeve 75 for fitting the rotating shaft 71 is provided in the rotating shaft mounting hole 74. The lower end of the rotating shaft 71 is sleeved with an upper clamping piece 76 and a lower clamping piece 77, and the driven tooth 72 is sleeved on the lower end of the rotating shaft 71 and clamped between the upper clamping piece 76 and the lower clamping piece 77. The structure is simple and the installation is convenient. A center sleeve 61 is provided in the middle of the middle mounting plate 6 for the upper end of the center shaft 4 to penetrate and fix. In this way, the two ends of the center shaft 4 are fixed, and the center shaft 4 penetrates into the center hole in the rotor 3, thereby preventing the rotor 3 from shaking. A gear assembly 8 driven by the driving teeth 31 is provided between the lower mounting plate 5 and the middle mounting plate 6. The gear assembly 8 includes a plurality of meshing reduction gear sets 81 and output gear sets 82. The reduction gear sets 81 and the output gear sets 82 each include a large gear and a small gear. In this case, two reduction gear sets 81 are included, wherein the large gear of one reduction gear set 81 meshes with the driving teeth 31. The output end of the gear assembly 8 extends between the upper cover 7 and the middle mounting plate 6 and meshes with the driven teeth 72. The small gear of the output gear set 82 meshes with the driven teeth 72. For easy and stable installation, the two ends of the rotating shaft of the reduction gear set 81 are respectively plugged into the middle mounting plate 6 and the lower mounting plate 5. The middle mounting plate 6 is provided with a gear extension hole 62. One end of the output gear set 82 extends from the gear extension hole 62 and meshes with the driven teeth 72.

[0022] For the convenience of installation, a rotor cavity 21 with openings at both ends is provided in the middle of the stator assembly 2. The stator assembly 2 is composed of two upper and lower annular workpieces 22. The hollow part of the annular workpiece 22 is the rotor cavity 21. Two plug-in pieces 23 are provided between the two annular workpieces 22. The annular workpieces 22 and the plug-in pieces 23 are plugged in by means of bosses and holes. The two plug-in pieces 23 respectively have a third plug-in claw 24 which is formed by flanging and inserted upward into the hollow part in the upper annular workpiece 22 and a fourth plug-in claw 25 which is formed by flanging and inserted downward into the hollow part in the lower annular workpiece 22. The rotor 3 is arranged in the rotor cavity 21, and a plurality of first claws 51 are stamped and flanged downward on the lower mounting plate 5. The plurality of first claws 51 form a circle and are inserted into the rotor cavity 21. The first claws 51 and the third claws 24 are staggered circumferentially. The upper end of the rotor 3 extends into the circle formed by the plurality of first claws 51. The lower mounting plate 5 is provided with a plug-in frame 52 extending upward and plugged with the upper cover 7. The upper cover 7 is provided with a plurality of plug holes 73 for inserting the ends of the plug-in frame 52. The structure is simple and the installation is convenient. A plurality of second claws 11 formed by stamping and flanging upwards are provided in the middle of the bottom end of the shell 1. The plurality of second claws 11 form a circle and are inserted into the rotor cavity 21. The lower end of the rotor 3 extends into the circle formed by the plurality of second claws 11. The fourth claw 25 is circumferentially staggered from the second claws 11. A central shaft hole 12 for inserting and fixing the lower end of the central shaft 4 is provided in the circle formed by the plurality of second claws 11 at the center of the bottom end of the shell 1. The lower end of the central shaft 4 is riveted into the central shaft hole 12.

[0023] In order to save space, increase strength and facilitate installation, a plug-in hole 78 is provided at the lower end of the rotating shaft 71, and the center sleeve 61 can be inserted into the plug-in hole 78 relatively rotatably, so that the center sleeve 61 can also position the rotating shaft 71 to prevent the rotating shaft 71 from shaking and ensure that the rotating shaft 71 is concentric with the center axis 4. The middle mounting plate 6 is provided with a groove 63 surrounding the center sleeve 61 and formed by downward stamping. The lower end of the plug-in hole 78 is inserted into the groove 63, making the structure more compact.

Claims

1. A motor with stable operation, comprising a housing (1), wherein the housing (1) is provided with a mounting cavity (10) with an upper end opening, wherein a stator assembly (2) is provided in the mounting cavity (10), wherein a rotor (3) is provided in the stator assembly (2), wherein: The rotor (3) is provided with a driving tooth (31) at one end, the installation cavity (10) is provided with a central axis (4) extending vertically and having an upper end passing through the rotor (3) and protruding from the driving tooth (31), the stator assembly (2) is provided with a lower installation plate (5) at the upper end, a middle installation plate (6) is provided above the lower installation plate (5) and is spaced apart from the lower installation plate (5), an upper cover (7) is provided above the middle installation plate (6) and is spaced apart from the middle installation plate (6) and is capable of covering the upper end opening of the installation cavity (10), and the upper cover (7) is provided The upper end of the rotating shaft (71) extends out of the upper cover (7), the lower end of the rotating shaft (71) extends between the upper cover (7) and the middle mounting plate (6), the lower end of the rotating shaft (71) is provided with a driven tooth (72), the middle part of the middle mounting plate (6) is provided with a center sleeve (61) for the upper end of the center shaft (4) to penetrate and be fixed, a gear assembly (8) driven by the driving tooth (31) is provided between the lower mounting plate (5) and the middle mounting plate (6), the output end of the gear assembly (8) extends between the upper cover (7) and the middle mounting plate (6) and meshes with the driven tooth (72).

2. A motor with stable operation according to claim 1, characterized in that: A connecting column (56) is provided between the middle mounting plate (6) and the lower mounting plate (5), and two ends of the connecting column (56) are respectively plugged into the middle mounting plate (6) and the lower mounting plate (5). The gear assembly (8) comprises a plurality of meshing reduction gear groups (81) and an output gear group (82), and two ends of the rotating shaft of the reduction gear group (81) are respectively plugged into the middle mounting plate (6) and the lower mounting plate (5). A gear extension hole (62) is provided on the middle mounting plate (6), and one end of the output gear group (82) extends out of the gear extension hole (62) to mesh with the driven gear (72).

3. A motor with stable operation according to claim 1, characterized in that: A rotor cavity (21) with upper and lower ends opened is provided in the middle of the stator assembly (2), the rotor (3) is arranged in the rotor cavity (21), a plurality of first claws (51) stamped and turned downward are provided on the lower mounting plate (5), the plurality of first claws (51) are arranged in a circle and inserted into the rotor cavity (21), the upper end of the rotor (3) extends into the circle formed by the plurality of first claws (51), and a plug-in frame (52) extending upward and plugging with the upper cover (7) is provided on the lower mounting plate (5).

4. A motor with stable operation according to claim 3, characterized in that: The upper cover (7) is provided with a plurality of insertion holes (73) for inserting the ends of the insertion frame (52).

5. The stable running motor according to claim 1, characterized in that: The upper cover (7) is provided with a rotating shaft mounting hole (74), and a shaft sleeve (75) for sleeve-fitting the rotating shaft (71) is provided in the rotating shaft mounting hole (74). The lower end of the rotating shaft (71) is sleeved with an upper clamping piece (76) and a lower clamping piece (77), and the driven tooth (72) is sleeved on the lower end of the rotating shaft (71) and is clamped between the upper clamping piece (76) and the lower clamping piece (77).

6. A motor with stable operation according to claim 1, characterized in that: The lower end of the rotating shaft (71) is provided with an inserting hole (78), and the center sleeve (61) can be inserted into the inserting hole (78) in a relatively rotatable manner.

7. A motor with stable operation according to claim 6, characterized in that: The middle mounting plate (6) is provided with a groove (63) surrounding the center sleeve (61) and formed by downward punching, and the lower end of the plug hole (78) is inserted into the groove (63).

8. The motor with stable operation according to claim 3, characterized in that: A plurality of second claws (11) formed by stamping and flanging upwards are provided at the middle of the bottom end of the shell (1); the plurality of second claws (11) form a circle and are inserted into the rotor cavity (21); the lower end of the rotor (3) extends into the circle formed by the plurality of second claws (11); a central axis hole (12) for inserting and fixing the lower end of the central axis (4) is provided in the circle formed by the plurality of second claws (11) at the center of the bottom end of the shell (1).

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