Reduction gearbox of motor, motor and refrigeration equipment

Abstract

The utility model discloses a reduction gearbox of a motor, a motor with the reduction gearbox and refrigeration equipment, and relates to the technical field of motors, the reduction gearbox of the motor comprises a box body and a gear assembly, the gear assembly is arranged on the box body, the gear assembly comprises a plurality of gears which are meshed with one another and have different diameters, and the gear assembly is arranged on the box body. The plurality of gears comprise an input gear, an output gear and at least one driven gear, the driven gear is arranged between the input gear and the output gear and is meshed with the input gear and the output gear, and at least one of the plurality of gears is provided with a reinforcing structure. According to the reduction gearbox of the motor provided by the embodiment of the utility model, the reinforcing structure is arranged on the gear, so that the structural strength of the gear assembly can be improved, and the transmission stability and the durability of the reduction gearbox are further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, especially a kind of motor's reduction gearbox with the motor with the reduction gearbox and the refrigeration equipment with the reduction gearbox or the motor of having. BACKGROUND

[0002] Gear reduction motor is more and more widely used, and various gear reduction motors have appeared in succession. In the related art, the reduction motor has low structural strength, resulting in poor transmission effect and poor durability. SUMMARY

[0003] The utility model at least one of the purposes in the related art is to solve the technical problem. To this end, one purpose of the utility model is to provide a reduction gearbox with a gear strengthening structure, which can improve the structural strength of the gear assembly and improve the stability of the transmission and the durability of the reduction gearbox.

[0004] Another purpose of the utility model is to provide a motor comprising the reduction gearbox described above.

[0005] Still another purpose of the utility model is to provide a refrigeration equipment comprising the reduction gearbox described above or the motor described above.

[0006] The reduction gearbox of the motor according to the embodiments of the utility model comprises a gearbox and a gear assembly, the gear assembly is arranged in the gearbox, the gear assembly comprises a plurality of gears that mesh with each other and have different diameters, the plurality of gears comprises an input gear, an output gear and at least one driven gear, the driven gear is arranged between the input gear and the output gear and meshes with the input gear and the output gear. Specifically, the plurality of gears with different diameters can achieve a reduction effect, the driving shaft of the motor is in transmission connection with the input gear, the input gear is driven to rotate, the input gear meshes with the driven gear, and the input gear drives the driven gear to rotate, wherein the diameter of the driven gear is greater than that of the input gear, so that the rotation speed can be reduced during transmission. When there are a plurality of transmission gears, the diameters of the transmission gears can increase in turn, so as to further reduce the rotation speed. Alternatively, in some embodiments, the rotation speed can be adjusted by changing the diameter of the driven gear, or by increasing or decreasing the number of gears.

[0007] The driven gear meshes with the output gear, and drives the output gear to rotate. The diameter of the output gear is greater than that of the driven gear or the diameter of the driven gear adjacent to the output gear, so that the rotation can be reduced to achieve the final reduction effect. The output gear can be in transmission connection with an external component to achieve a reduction in the rotation of the component.

[0008] Further, at least one of the plurality of gears is provided with a reinforcing structure, which can improve the structural strength of the gear assembly, improve the stability of the transmission and the durability of the reduction gearbox. Specifically, the plurality of gears can be provided with a reinforcing structure, or the reinforcing structure can be provided on the gear with a larger diameter. The reinforcing structure can also be provided on the gear with a smaller diameter. Since the gear with a smaller diameter rotates at a higher speed and has a smaller torque, the structural strength and stability of the gear during operation can be improved by increasing the reinforcing structure.

[0009] According to the reduction gearbox of the embodiment of the utility model, the reinforcing structure is arranged on the gear, which can improve the structural strength of the gear assembly, improve the stability of the transmission and the durability of the reduction gearbox.

[0010] In addition, the reduction gearbox of the motor according to the above-mentioned embodiment of the utility model can also have the following additional technical features:

[0011] In some examples of the utility model, the reinforcing structure includes a plurality of reinforcing ribs arranged in a diverging manner along the diameter of the gear; or the reinforcing structure includes a plurality of convex portions arranged in a circumferential direction of the gear.

[0012] In some examples of the utility model, the input gear includes a coaxially arranged first inner gear and a first outer gear, the diameter of the first inner gear is smaller than that of the first outer gear, the first inner gear is protrudingly arranged on a first side of the first outer gear, the first inner gear is in driving connection with the motor, the first outer gear is in meshing connection with the driven gear, a second side of the first outer gear is provided with the reinforcing structure, and the reinforcing structure is opposite to the first inner gear in an axial direction of the input gear.

[0013] In some examples of the utility model, the first inner gear and the gear shaft of the input gear are provided with the reinforcing structure.

[0014] In some examples of the utility model, a first side of the input gear is provided with a boss, the first inner gear is arranged on the boss, the first inner gear is hollow, a gear shaft of the input gear is arranged on an inner side of the first inner gear, and a plurality of reinforcing ribs arranged in a circumferential direction are arranged between an outer wall of the gear shaft of the input gear and an inner wall of the first inner gear.

[0015] In some examples of the utility model, a second side of the input gear is provided with a recess, a gear shaft of the input gear is arranged in the recess, and a plurality of reinforcing ribs or convex portions arranged in a circumferential direction are arranged between an outer wall of the gear shaft of the input gear and an inner wall of the recess.

[0016] In some examples of the utility model, the box has a cavity, the cavity is internally provided with a first mounting position, and the input gear is arranged on the first mounting position.

[0017] In some examples of the utility model, the output gear is provided with the reinforcing structure, and the reinforcing structure comprises a plurality of reinforcing ribs arranged in a diverging manner from a gear shaft of the output gear to an output gear rim.

[0018] In some examples of the utility model, the driven gear is provided with the reinforcing structure, and the reinforcing structure comprises a plurality of reinforcing ribs arranged in a diverging manner from a gear shaft of the output gear to an output gear rim.

[0019] In some examples of the utility model, when the plurality of gears are engaged, the spacing between the two gear teeth is 0.1mm-1.5mm.

[0020] In some examples of the utility model, the driven gear comprises a coaxially arranged second inner gear and a second outer gear, the diameter of the second inner gear is smaller than that of the second outer gear, the second inner gear protrudes from a first side of the second outer gear, the second outer gear is engaged with the input gear, and the second inner gear is engaged with the output gear.

[0021] In some examples of the utility model, the box has a cavity, the cavity is internally provided with a convex rib, the convex rib forms a first mounting position and a second mounting position in the cavity, the input gear is arranged on the first mounting position, the driven gear is arranged on the second mounting position, and at least a part of the output gear is stacked on the second mounting position.

[0022] The motor according to the utility model embodiment comprises the foregoing speed reducer.

[0023] The motor according to the utility model embodiment, by applying the foregoing speed reducer on the motor, can realize the speed reduction effect and is beneficial to improving the stability of the motor operation.

[0024] The refrigeration equipment according to the utility model embodiment comprises the foregoing speed reducer or the foregoing motor.

[0025] In some examples of the utility model, the motor comprises a main body, a driving shaft and an impeller, the driving shaft is arranged on the main body, and one end of the driving shaft is in transmission connection with the input gear.

[0026] In some examples of the utility model, the motor can be an asynchronous motor or a single-phase shielded asynchronous motor.

[0027] According to the refrigeration equipment provided in the embodiment of the present application, the speed reduction effect can be realized by applying the speed reduction box or the motor on the refrigeration equipment, and the stability of the refrigeration equipment in operation can be improved.

[0028] In some examples of the present application, the refrigeration equipment can be an ice maker or a slush maker, and the motor can be a stirring motor for the ice maker or the slush maker. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic diagram of the motor in some embodiments of the present application (showing the speed reduction box, the motor body, the driving shaft and the impeller);

[0030] Figure 2 is an assembly diagram of the speed reduction box structure of the motor in some embodiments of the present application (showing the assembled gear assembly);

[0031] Figure 3 is a sectional view of the speed reduction box of the motor in some embodiments of the present application (showing the transmission relationship of the gear assembly);

[0032] Figure 4 is a schematic diagram of the input gear in some embodiments of the present application (showing the first inner gear, the first outer gear and the reinforcing ribs on the inner side of the first inner gear);

[0033] Figure 5 is a schematic diagram of the input gear in some embodiments of the present application (showing the first inner gear, the first outer gear, the recess of the input gear and the reinforcing ribs in the recess);

[0034] Figure 6 is a schematic diagram of the input gear in some other embodiments of the present application (showing the recess of the input gear and the protrusion in the recess);

[0035] Figure 7 is a schematic diagram of the driven gear in some embodiments of the present application (showing the reinforcing ribs on the side of the driven gear away from the second inner gear);

[0036] Figure 8 is a schematic diagram of the seat body of the box body in some embodiments of the present application (showing the first mounting position and the second mounting position).

[0037] REFERENCE SIGNS:

[0038] 1000, Motor; 100, Gearbox; 10, Housing; 11, Base; 110, Cavity; 101, First Mounting Position; 111, First Rib; 112, Second Rib; 102, Second Mounting Position; 113, Raised Rib; 114, Positioning Post; 115, Rib; 12, Cover; 121, Main Body of Plate; 103, Positioning Hole; 1211, Support Rib; 122, Connecting Part; 120, Mounting Hole; 20, Gear Assembly; 21, Input Gear; 211, First Internal Gear; 212, First External Gear; 213, Boss; 214, Recess; 215, Gear Shaft; 22, Driven Gear; 221, Second Internal Gear; 222, Second External Gear; 23, Output Gear; 30, Reinforcing Structure; 31, Reinforcing Rib; 32, Raised Part; 200, Main Body; 210, Drive Shaft; 300, Impeller. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0040] Combination Figure 1 and Figure 2 According to an embodiment of the present invention, the gearbox 100 of the motor 1000 includes a housing 10 and a gear assembly 20. The gear assembly 20 is disposed in the housing 10 and includes multiple meshing gears of different diameters. The multiple gears include an input gear 21, an output gear 23, and at least one driven gear 22. The driven gear 22 is disposed between the input gear 21 and the output gear 23 and meshes with both. Specifically, the multiple gears of different diameters can achieve a speed reduction effect. The drive shaft 210 of the motor 1000 is connected to the input gear 21, driving the input gear 21 to rotate. The input gear 21 meshes with the driven gear 22, driving the driven gear 22 to rotate. The driven gear 22 has a larger diameter than the input gear 21, thereby reducing the rotational speed during transmission. When multiple transmission gears are present, the diameters of the transmission gears can be increased sequentially, further reducing the rotational speed. Optionally, in some embodiments, the rotational speed can be adjusted by changing the diameter of the driven gear 22, or by adding or removing gears.

[0041] The driven gear 22 is engaged with the output gear 23, and drives the output gear 23 to rotate, and the diameter of the output gear 23 is greater than the diameter of the driven gear 22 or the diameter of the driven gear 22 adjacent to the output gear 23, so that the rotation can be reduced, and the final speed reduction effect can be realized. The output gear 23 can be drivingly connected with an external component to realize the speed reduction rotation of the component.

[0042] Further, at least one of the plurality of gears is provided with a reinforcing structure 30, which can improve the structural strength of the gear assembly 20, and can improve the stability of the transmission and the durability of the reduction box 100. Specifically, the plurality of gears can be provided with the reinforcing structure 30, or the reinforcing structure 30 can be provided on the gear with a larger diameter. The reinforcing structure 30 can also be provided on the gear with a smaller diameter. Since the gear with a smaller diameter rotates at a higher speed and has a smaller torque, the structural strength and stability of the gear during operation can be improved by increasing the reinforcing structure 30.

[0043] According to the reduction box 100 of the embodiment of the utility model, the reinforcing structure 30 is arranged on the gear, which can improve the structural strength of the gear assembly 20, and can improve the stability of the transmission and the durability of the reduction box 100.

[0044] In combination Figure 4 and Figure 7 In some embodiments of the utility model, the reinforcing structure 30 includes a plurality of reinforcing ribs 31 arranged in a diverging manner along the radial direction of the gear, which is beneficial to disperse the stress and enhance the overall structural stability. Alternatively, the reinforcing structure 30 includes a plurality of convex portions 32 arranged along the circumferential direction of the gear, which increases the structural strength of the local structure, for example, the convex portion 32 is arranged at a position with a larger stress, and the structure is simple, which can achieve lightweight while enhancing the structural strength.

[0045] In some embodiments of the utility model, in combination Figure 3 and Figure 5 The input gear 21 includes a first inner gear 211 and a first outer gear 212 arranged coaxially, the diameter of the first inner gear 211 is smaller than that of the first outer gear 212, the first inner gear 211 is protrudingly arranged on the first side of the first outer gear, the first inner gear 211 is drivingly connected with the motor 1000, and the first outer gear 212 is engaged with the driven gear 22. Therefore, the input gear 21 can realize the driving connection between the motor 1000 transmission shaft and the driven gear 22, and when connected, the first inner gear 211 and the first outer gear 212 with different diameters can realize the first-stage speed reduction. Since the input gear 21 needs to be engaged with the motor 1000 and the driven gear 22 at the same time, the reinforcing structure 30 can be arranged on the input gear 21 to improve the stability and reliability of the input gear 21 during power transmission.

[0046] Specifically, the second side of the first outer gear 212 is provided with a reinforcing structure 30, and the reinforcing structure 30 is opposite to the first inner gear 211 in the axial direction of the input gear 21. Since the diameter of the first inner gear 211 is small, the torque is small, and the rotating speed is fast, the reinforcing structure 30 is arranged at a position opposite to the first inner gear 211 in the axial direction, so that the structural strength and the structural stability of the first inner gear 211 can be improved.

[0047] In some embodiments of the utility model, the reinforcing structure 30 is arranged between the first inner gear 211 and the gear shaft 215 of the input gear 21, so that the reinforcing structure 30 can support the first inner gear 211 and the gear shaft 215, and the structural stability of the first inner gear 211 and the overall structural stability of the input gear 21 can be improved.

[0048] In some embodiments of the utility model, Figure 4 The first side of the input gear 21 is provided with a boss 213, the first inner gear 211 is arranged on the boss 213, the first inner gear 211 is hollow, the gear shaft 215 of the input gear 21 is arranged on the inner side of the first inner gear 211, and a plurality of reinforcing ribs 31 are arranged between the outer wall of the gear shaft 215 of the input gear 21 and the inner wall of the first inner gear 211.

[0049] Specifically, the first inner gear 211 is arranged on the side surface of the input gear 21 in the axial direction and is coaxially connected with the first outer gear 212, so that the power input from the first inner gear 211 can be output from the first outer gear 212 at the same time, and the rotating speed is reduced due to the increase of torque or the increase of gear diameter during the output process, so that the speed reduction effect is realized. More specifically, a plurality of reinforcing ribs 31 are arranged between the inner side of the first inner gear 211 and the outer side of the gear shaft 215, the reinforcing ribs 31 can improve the structural strength of the gear shaft 215, and can also support the first inner gear 211 to improve the structural stability. The boss 213 on the input gear 21 can support the first inner gear 211 on one hand, and can also reasonably arrange the position of the first inner gear 211 in the axial direction, so that the first inner gear 211 is convenient to be connected with the motor 1000.

[0050] Further, in combination with Figure 5In some embodiments of the utility model, the second side of input gear 21 is equipped with recess 214, the gear shaft 215 of input gear 21 is arranged in recess 214, and a plurality of reinforcing ribs 31 are arranged in the circumferential direction between the outer wall of gear shaft 215 and the inner wall of recess 214. Specifically, recess 214 can simplify the structure of input gear 21, reduce the overall weight of the gear, and facilitate lightweight implementation. In addition, by arranging reinforcing ribs 31 in recess 214, the structural strength around gear shaft 215 can be appropriately improved on the basis of weight reduction. More specifically, recess 214 and first internal gear 211 are arranged on opposite sides of the axial direction of input gear 21, and recess 214 and first internal gear 211 are opposite in the axial direction. In this way, reinforcing ribs 31 in recess 214 can provide support to first internal gear 211 in the axial direction, thereby improving the structural strength of first internal gear 211 and the gear shaft 215 of input gear 21 or the central position of input gear 21, and further improving the stability of input gear 21 during operation.

[0051] In combination Figure 6 In some embodiments of the utility model, the second side of input gear 21 is equipped with recess 214, the gear shaft 215 of input gear 21 is arranged in recess 214, and a plurality of reinforcing ribs 31 are arranged in the circumferential direction between the outer wall of gear shaft 215 and the inner wall of recess 214. Specifically, recess 214 can simplify the structure of input gear 21, reduce the overall weight of the gear, and facilitate lightweight implementation. In addition, by arranging reinforcing ribs 31 in recess 214, the structural strength around gear shaft 215 can be appropriately improved on the basis of weight reduction. More specifically, recess 214 and first internal gear 211 are arranged on opposite sides of the axial direction of input gear 21, and recess 214 and first internal gear 211 are opposite in the axial direction. In this way, reinforcing ribs 31 in recess 214 can provide support to first internal gear 211 in the axial direction, thereby improving the structural strength of first internal gear 211 and the gear shaft 215 of input gear 21 or the central position of input gear 21, and further improving the stability of input gear 21 during operation.

[0052] In some embodiments of the utility model, output gear 23 is equipped with reinforcing structure 30, reinforcing structure 30 includes a plurality of reinforcing ribs 31 arranged in a diverging manner from the gear shaft of output gear 23 to the rim of output gear 23, which can improve the structural strength of output gear 23 and is simple in structure and easy to construct. Specifically, reinforcing structure 30 or reinforcing rib 31 can be arranged on opposite sides of the axial direction of output gear 23, or only on one side. Figure 2 The case where the side of output gear 23 is not equipped with reinforcing structure 30 is shown, and the structure of reinforcing rib 31 arranged on the side of output gear 23 can refer to Figure 7 .

[0053] In some embodiments of the utility model, in combination Figure 3 and Figure 8The box body 10 has a cavity 110, the cavity 110 is internally provided with a first mounting position 101, and the input gear 21 is arranged at the first mounting position 101, so that the input gear 21 can be conveniently assembled, the first mounting position 101 can protect the gear in the circumferential direction, the input gear 21 is isolated from the external space, the input gear 21 can be prevented from being affected by the external space during operation, and the stability during operation is improved. Specifically, the first mounting position 101 comprises a first rib 111 and a second rib 112, the first rib 111 is arranged at the outer periphery of the first inner gear 211, the first rib 111 can protect the first inner gear 211, and the second rib 112 is arranged at the outer periphery of the first outer gear 212, so that the second rib 112 can protect the first outer gear 212, and the stability during operation is improved.

[0054] Further, in combination with Figure 1 The driving shaft 210 of the motor 1000 can be arranged in the first mounting position 101, so that the transmission between the input gear 21 and the motor 1000 can be carried out in the first mounting position 101, the driving shaft 210 and the input gear 21 are protected, and the stability during transmission is improved.

[0055] In some embodiments of the utility model, in combination with Figure 2 And Figure 7 The driven gear 22 comprises a second inner gear 221 and a second outer gear 222 arranged coaxially, the diameter of the second inner gear 221 is smaller than that of the second outer gear 222, the second inner gear 221 protrudes from the first side of the second outer gear 222, the second outer gear 222 is engaged with the input gear 21, and the second inner gear 221 is engaged with the output gear 23. Therefore, the driven gear 22 can realize the transmission connection between the input gear 21 and the output gear 23. The second inner gear 221 is engaged with the output gear 23 with a larger diameter, and the speed reduction effect can be further realized.

[0056] In combination with Figure 7 In some embodiments of the utility model, the driven gear 22 is provided with a reinforcing structure 30, the reinforcing structure 30 comprises a plurality of reinforcing ribs 31 arranged in a diverging manner from the gear shaft of the output gear 23 to the wheel rim of the output gear 23, and the structural strength of the gear can be improved. Since the driven gear 22 needs to be engaged with the input gear 21 and the output gear 23 at the same time, the reinforcing structure 30 can be arranged on the driven gear 22 to improve the stability and reliability of the input gear 21 during power transmission. Specifically, the driven gear 22 has two opposite sides in the axial direction, one side is provided with the second inner gear 221, and the other side is provided with a plurality of reinforcing ribs 31, the plurality of reinforcing ribs 31 arranged in a diverging manner can facilitate force transmission and dispersion, and the overall structural strength of the driven gear 22 can be improved.

[0057] In some embodiments of the utility model, in combination with Figure 8The box 10 has a cavity 110, a convex rib 113 is arranged in the cavity 110, the convex rib 113 is arranged to form a first mounting position 101 and a second mounting position 102 in the cavity 110, the input gear 21 is arranged in the first mounting position 101, the driven gear 22 is arranged in the second mounting position 102, and at least a part of the output gear 23 is stacked on the second mounting position 102. Specifically, the first mounting position 101 and the second mounting position can facilitate the positioning and mounting of the input gear 21 and the driven gear 22, and can protect the input gear 21 and the driven gear 22, for example, can block the circumferential dust or impurities from contacting the tooth portion of the gear peripheral surface.

[0058] More specifically, during assembly, the input gear 21 and the driven gear 22 can be mounted first, the first inner gear 211 of the input gear 21 is arranged in the first mounting position 101, the second outer gear 222 is arranged in the second mounting position 102, the first inner gear 211 is engaged with the second outer gear 222 of the driven gear 22, and the second inner gear 221 of the driven gear 22 protrudes from the second mounting position 102. When the output gear 23 is mounted, the output gear 23 is stacked on the second mounting position 102, which can facilitate the engagement of the output gear 23 with the second inner gear 221 protruding from the second mounting position 102, facilitate assembly, improve the rationality of arrangement, and thus improve the stability during operation and the durability of the gear assembly 20.

[0059] In some embodiments of the utility model, the distance between two adjacent gears is 0.1mm-1.5mm when the gears are engaged. Preferably, the distance between the gears is 0.2mm. Specifically, the engagement effect or transmission effect can be improved by adjusting the distance between the two engaged gear teeth, and in addition, by adjusting the distance between the two gear teeth, the noise during operation of the gear assembly can be reduced, and the use effect of the speed reducer box can be improved.

[0060] In some embodiments of the utility model, in combination Figure 3 The box 10 includes a seat body 11 and a cover body 12, the seat body 11 is arranged to form a cavity 110, the cover body 12 is arranged to openably cover the cavity 110, the cover body 12 includes a plate body 121, a plurality of positioning holes 103 are arranged on the plate body 121, a plurality of positioning columns 114 are arranged in the seat body 11 or the cavity 110, and the positioning holes 103 and the positioning columns 114 are connected by fasteners during assembly. In order to improve the stability of assembly, four or six positioning structures can be arranged along the circumference of the box 10.

[0061] In some embodiments of the utility model, the bottom wall of seat body 11 is provided with a plurality of ribs 115 for reinforcing the structural strength of box body 10. When the box body 10 is connected with the main body 200 of motor 1000, the structural strength of the connection between the box body 10 and the main body 200 of motor 1000 can be improved, and the box body 10 can also provide support force for the transmission between the main body 200 of motor 1000 and the reduction box 100, thereby improving the overall structural strength of motor 1000

[0062] Further, the cover body 12 further comprises a connecting portion 122, which is provided on the outer periphery of the plate main body 121 and protrudes outward, and a mounting hole 120 is provided on the connecting portion 122. Thus, the reduction box 100 can be mounted on the refrigeration equipment through the mounting hole 120. Specifically, the connecting portion 122 can be arranged at the four corners of the plate main body 121, which is simple in structure and beneficial to improve the stability after assembly.

[0063] Further, the plate main body 121 is provided with a matching hole communicating with the output gear 23, so as to facilitate the transmission connection between the external component and the output gear 23. The periphery of the matching hole is provided with a support rib 1211, which can improve the structural strength of the connection between the external component and the output gear 23, and also can provide support between the external component and the output gear 23, which is beneficial to improve the matching effect.

[0064] In combination with Figure 1 According to the motor 1000 of the utility model embodiment, the foregoing reduction box 100 is applied to the motor 1000, so that the reduction effect can be realized, and the stability of the motor 1000 during operation can be improved.

[0065] In some embodiments of the utility model, the motor 1000 comprises a main body 200, a driving shaft 210 and an impeller 300. The driving shaft 210 is arranged on the main body 200, one end of the driving shaft 210 is in transmission connection with the input gear 21, so as to realize the output of power. The other end of the driving shaft 210 is in transmission connection with the impeller 300, so as to drive the impeller 300 to rotate, thereby achieving the effect of heat dissipation for the motor 1000.

[0066] Optionally, the motor 1000 can be an asynchronous motor or a single-phase shielded asynchronous motor.

[0067] According to the refrigeration equipment of the utility model embodiment, the foregoing reduction box 100 or the foregoing motor 1000 is applied to the refrigeration equipment, so that the reduction effect can be realized, and the stability of the refrigeration equipment during operation can be improved. Specifically, the refrigeration equipment can be an ice maker or a smoothie maker, and the motor 1000 can be a stirring motor for the ice maker or the smoothie maker.

[0068] In the description of the utility model, it is understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "bottom", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0069] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0070] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0071] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0072] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A reduction gearbox (100) of an electric machine (1000), characterized in that, The utility model relates to a gear box, comprising: a box (10), a gear assembly (20) arranged in the box (10), the gear assembly (20) comprising a plurality of mutually meshing gears with different diameters, the plurality of gears comprising an input gear (21), an output gear (23) and at least one driven gear (22) arranged between the input gear (21) and the output gear (23) and meshing with the input gear (21) and the output gear (23), at least one of the plurality of gears being provided with a reinforcing structure (30).

2. The reduction gearbox (100) according to claim 1, characterized in that The reinforcing structure (30) comprises a plurality of reinforcing ribs (31) arranged in a diverging manner along the radial direction of the gear; or the reinforcing structure (30) comprises a plurality of protrusions (32) arranged in a circumferential direction along the gear.

3. The reduction gearbox (100) according to claim 1, characterized in that The input gear (21) comprises a coaxially arranged first inner gear (211) and a first outer gear (212), the diameter of the first inner gear (211) being smaller than that of the first outer gear (212), the first inner gear (211) being arranged on a first side of the first outer gear (212), the first inner gear (211) being drivingly connected to a motor (1000), the first outer gear (212) being meshed with the driven gear (22), a second side of the first outer gear (212) being provided with the reinforcing structure (30), the reinforcing structure (30) being opposite to the first inner gear (211) along the axial direction of the input gear (21); and / or The reinforcing structure (30) is arranged between the first inner gear (211) and a gear shaft (215) of the input gear (21).

4. The reduction gearbox (100) according to claim 3, characterized in that A first side of the input gear (21) is provided with a boss (213), the first inner gear (211) being arranged in the boss (213), the first inner gear (211) being hollow, a gear shaft (215) of the input gear (21) being arranged in the inside of the first inner gear (211), a plurality of reinforcing ribs (31) being arranged in a circumferential direction and spaced apart between the outer wall of the gear shaft (215) and the inner wall of the first inner gear (211).

5. The reduction gearbox (100) according to claim 3, characterized in that A second side of the input gear (21) is provided with a recess (214), a gear shaft (215) of the input gear (21) being arranged in the recess (214), a plurality of reinforcing ribs (31) or protrusions (32) being arranged in a circumferential direction and spaced apart between the outer wall of the gear shaft (215) and the inner wall of the recess (214).

6. The reduction gearbox (100) according to claim 3, characterized in that The box (10) has a cavity (110), the cavity (110) being provided with a first mounting position (101), the input gear (21) being arranged in the first mounting position (101); the first mounting position (101) comprising a first rib (111) and a second rib (112), the first rib (111) being arranged on the outer periphery of the first inner gear (211), the second rib (112) being arranged on the outer periphery of the first outer gear (212).

7. The reduction gearbox (100) according to claim 1, characterized in that The output gear (23) is provided with the reinforcing structure (30), the reinforcing structure (30) comprises a plurality of reinforcing ribs (31) arranged divergently from the gear shaft of the output gear (23) to the wheel rim of the output gear (23); and / or The driven gear (22) is provided with the reinforcing structure (30), the reinforcing structure (30) comprises a plurality of reinforcing ribs (31) arranged divergently from the gear shaft of the output gear (23) to the wheel rim of the output gear (23); and / or The spacing between the two gear teeth is 0.1mm-1.5mm when the plurality of gears are engaged.

8. The reduction gearbox (100) according to claim 1, characterized in that The driven gear (22) comprises a coaxially arranged second inner gear (221) and a second outer gear (222), the diameter of the second inner gear (221) is smaller than that of the second outer gear (222), the second inner gear (221) protrudes from the first side of the second outer gear (222), the second outer gear (222) is engaged with the input gear (21), and the second inner gear (221) is engaged with the output gear (23); and / or The box body (10) has a cavity (110), the cavity (110) is provided with a convex rib (113), the convex rib (113) constructs a first mounting position (101) and a second mounting position (102) in the cavity (110), the input gear (21) is arranged in the first mounting position (101), the driven gear (22) is arranged in the second mounting position (102), and at least a part of the output gear (23) is stacked on the second mounting position (102).

9. An electric machine (1000), characterized in that The reduction gearbox (100) according to any one of claims 1-8.

10. A refrigeration appliance characterized in that, The motor (1000) according to claim 9. The motor (1000) according to claim 9.

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