Micromotor for fruit and vegetable machine

Abstract

The utility model discloses a micromotor for a fruit and vegetable machine, which is characterized in that a shell through hole and a rotor shaft are fixed in a riveting manner, so that the rotor shaft and a rotor shell are coaxially connected, the rotor shaft and the rotor shell form a whole, high concentricity between the rotor shaft and the rotor shell is ensured, the micromotor is ensured to run stably and smoothly, and the micromotor has the advantages of simple structure, convenience in use and the like. The manufacturing cost is low, the assembly is convenient and reliable, and the market competitiveness of the product can be improved.

Description

[Technical field]

[0001] The utility model relates to a micro motor for a fruit and vegetable machine. [Background technology]

[0002] Currently, micromotors used in fruit and vegetable machines usually include a stator assembly and a rotor assembly. The rotor assembly includes a rotor shaft and a rotor shell relatively fixedly connected to the rotor shaft. The rotor shaft is connected and fixed to the rotor shell by a connecting assembly, which has the problems of complex structure and high manufacturing cost. In addition, it also leads to the problem of low concentricity between the rotor shaft and the rotor shell, which leads to serious yaw and noise when the motor rotates.

[0003] For this reason, the present invention is studied and proposed in view of the above-mentioned problems. [Contents of the utility model]

[0004] The utility model aims to overcome the deficiencies of the prior art and provides a micromotor for a fruit and vegetable machine, wherein the shell through hole and the rotor shaft are fixed by riveting to make the rotor shaft and the rotor shell coaxially connected, thereby making the rotor shaft and the rotor shell form a whole, ensuring high concentricity between the two, ensuring that the micromotor runs smoothly, and at the same time having the characteristics of simple structure and low manufacturing cost.

[0005] The utility model is realized through the following technical solutions:

[0006] A micromotor for a fruit and vegetable machine comprises a mounting base 1, a stator assembly 2 and a rotor assembly 3, wherein the stator assembly 2 is relatively fixedly arranged on the mounting base 1, and the rotor assembly 3 is rotatably arranged on the mounting base 1; the rotor assembly 3 comprises a rotor shaft 31 and a rotor shell 32 rotatably connected to the mounting base 1, the rotor shell 32 is provided with a shell through hole 321 for the rotor shaft 31 to pass through, and the shell through hole 321 and the rotor shaft 31 are fixed by riveting so that the rotor shaft 31 and the rotor shell 32 are coaxially connected.

[0007] As described above, in the micromotor for a fruit and vegetable machine, a housing boss 322 is formed on the inner side of the rotor housing 32 and extends downward relative to the housing through hole 321; and / or a housing boss 322 is formed on the outer side of the rotor housing 32 and extends upward relative to the housing through hole 321.

[0008] In the micromotor for a fruit and vegetable machine as described above, the upper surface of the rotor housing 32 is provided with heat dissipation holes 323 communicating with the inner cavity of the rotor housing 32 .

[0009] In the micromotor for a fruit and vegetable machine as described above, the housing through hole 321 is configured to be punched out by stamping and formed integrally with the rotor housing 32 .

[0010] As described above, in a micromotor for a fruit and vegetable machine, the mounting seat 1 includes a mounting base plate 11 and a mounting sleeve 12 arranged on the mounting base plate 11, and the mounting sleeve 12 is rotatably connected to the rotor shaft 31 through a bearing; the stator assembly 2 is relatively fixedly arranged outside the mounting sleeve 12.

[0011] As described above, in a micromotor for a fruit and vegetable machine, a blocking member 121 is provided on the inner wall of the mounting sleeve 12, and the two bearings are correspondingly arranged in the mounting sleeve 12 on the upper and lower sides of the blocking member 121; a limiting shoulder 311 is provided at the lower part of the rotor shaft 31 for blocking and cooperating with the inner ring of the bearing located on the upper side of the blocking member 121, and a limiting groove 312 is also provided at the lower part of the rotor shaft 31 and below the limiting shoulder 311, and a limiting snap ring is provided in the limiting groove 312 for blocking and cooperating with the inner ring of the bearing located on the lower side of the blocking member 121.

[0012] As described above, in a micromotor for a fruit and vegetable machine, the stator assembly 2 includes a stator core 21, the stator core 21 is provided with a core through hole 211 for being sleeved on the outside of a mounting sleeve 12, a rotation-stopping structure is provided between the core through hole 211 and the mounting sleeve 12; the outside of the mounting sleeve 12 is provided with a mounting shoulder 122 for blocking and limiting cooperation with the lower edge of the core through hole 211 when the stator core 21 is sleeved on the outside of the mounting sleeve 12.

[0013] In the micromotor for a fruit and vegetable machine as described above, the stator core 21 is composed of a plurality of iron core sheets stacked axially, a plurality of riveted protrusions are evenly arranged on one side of the iron core sheets, and riveted concave points corresponding to the riveted protrusions are formed on the other side of the iron core sheets, and when the plurality of iron core sheets are stacked axially, two adjacent iron core sheets are riveted and fixed by the riveted protrusions and the riveted concave points.

[0014] As described above, in a micromotor for a fruit and vegetable machine, the rotor assembly 3 also includes a magnetic ring bracket 33 and a plurality of magnetic tiles 34 which are arranged on the inner side of the rotor housing 32 and relatively fixedly connected to the rotor housing 32. The magnetic ring bracket 33 is provided with an embedding groove 331 for embedding the corresponding magnetic tile 34. The two side walls of the embedding groove 331 are arranged to be inclined toward each other from the inner side of the magnetic ring bracket 33 to the outer side of the magnetic ring bracket 33.

[0015] In the micromotor for a fruit and vegetable machine as described above, the magnetic ring bracket 33 is made of plastic material, and a plurality of magnetic tiles 34 are distributed on the magnetic ring bracket 33 in a circular shape and are integrally injection molded with the magnetic ring bracket 33 to form a whole.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. In the utility model, the through hole of the shell and the rotor shaft are fixed by riveting to make the rotor shaft and the rotor shell coaxially connected, so that the rotor shaft and the rotor shell form a whole, ensuring high concentricity between the two and ensuring the smooth operation of the micromotor. At the same time, it also has the characteristics of simple structure, low manufacturing cost, convenient and reliable assembly, which is conducive to improving the market competitiveness of products.

[0018] 2. A shell boss is formed on the inner side of the rotor shell and extends downward relative to the position of the shell through hole; and / or a shell boss is formed on the outer side of the rotor shell and extends upward relative to the position of the shell through hole, which can increase the connection area to improve the connection stability and strength between the rotor shaft and the rotor shell.

[0019] 3. In order to improve the heat dissipation efficiency, the upper surface of the rotor shell is provided with heat dissipation holes communicating with the inner cavity of the rotor shell.

[0020] 4. In order to ensure the concentricity between the shell through hole and the rotor shell, the shell through hole is configured to be punched out by stamping and formed integrally with the rotor shell.

[0021] 5. When multiple iron core sheets are stacked axially, two adjacent iron core sheets are riveted and fixed by riveting convex points and riveting concave points, which can make the connection between adjacent iron core sheets more stable and tighter, improve the structural strength, and thus improve the reliability.

[0022] 6. The magnetic ring bracket is made of plastic material, and the plurality of magnetic tiles are distributed on the magnetic ring bracket in a circular shape and are integrally injection molded with the magnetic ring bracket to form a whole. The magnetic ring bracket is used to fix the plurality of magnetic tiles, and all the magnetic tiles are integrally injection molded with the magnetic ring bracket, which ensures the accurate positioning of the magnetic tiles, reduces the installation process of the magnetic tiles, and solves the problems of difficult installation and positioning of the magnetic tiles and complex assembly in the prior art.

Brief Description of the Drawings

[0023] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 It is a three-dimensional diagram of the utility model.

[0025] Figure 2 It is a side view of the utility model.

[0026] Figure 3 It is a cross-sectional view of the utility model.

[0027] Figure 4 This is one of the exploded views of the present utility model.

[0028] Figure 5 This is the second exploded view of the utility model.

[0029] Figure 6 It is a structural schematic diagram of the stator assembly in the utility model. [Specific implementation method]

[0030] The implementation modes of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0031] like Figure 1-6 As shown, the utility model is a micro motor for a fruit and vegetable machine, comprising a mounting seat 1, a stator assembly 2 and a rotor assembly 3, wherein the stator assembly 2 is relatively fixedly arranged on the mounting seat 1, and the rotor assembly 3 is rotatably arranged on the mounting seat 1; the rotor assembly 3 comprises a rotor shaft 31 and a rotor housing 32 rotatably connected to the mounting seat 1, and the rotor housing 32 is provided with a housing through hole 321 for the rotor shaft 31 to pass through, and the housing through hole 321 and the rotor shaft 31 are fixed by riveting so that the rotor shaft 31 is coaxially connected with the rotor housing 32. In the utility model, the housing through hole and the rotor shaft are fixed by riveting so that the rotor shaft and the rotor housing are coaxially connected, thereby making the rotor shaft and the rotor housing form a whole, ensuring high concentricity between the two, ensuring the smooth and stable operation of the micro motor, and at the same time, it also has the characteristics of simple structure, low manufacturing cost, convenient and reliable assembly, which is conducive to improving the market competitiveness of the product.

[0032] like Figure 3 As shown, in order to improve the connection stability and strength between the rotor shaft and the rotor housing, a housing boss 322 is formed on the inner side of the rotor housing 32 and extends downward relative to the housing through hole 321 .

[0033] In other embodiments, in order to improve the connection stability and strength between the rotor shaft and the rotor housing, a housing boss 322 is formed on the outer side of the rotor housing 32 and extends upward relative to the housing through hole 321 .

[0034] like Figure 1 , 4 As shown in FIG. 5 , in order to improve the heat dissipation efficiency, the upper surface of the rotor housing 32 is provided with a heat dissipation hole 323 which is communicated with the inner cavity of the rotor housing 32 .

[0035] In order to ensure the concentricity between the housing through hole and the rotor housing, the housing through hole 321 is configured to be punched out by stamping and integrally formed with the rotor housing 32, that is, during the process of stamping the rotor housing 32, the housing through hole 321 is punched out on the rotor housing 32 at the same time to ensure the concentricity between the outer side of the rotor housing 32 and the housing through hole 321. (The housing through hole 321 and the rotor housing 32 are integrally stamped by a set of stamping equipment)

[0036] like Figure 1-5As shown, for convenient and reliable assembly, the mounting seat 1 includes a mounting base plate 11 and a mounting sleeve 12 arranged on the mounting base plate 11, and the mounting sleeve 12 is rotatably connected to the rotor shaft 31 through a bearing; the stator assembly 2 is relatively fixedly arranged on the outside of the mounting sleeve 12.

[0037] like Figure 3-5 As shown, in order to ensure stable and reliable connection and convenient assembly, a blocking member 121 is provided on the inner wall of the mounting sleeve 12, and the two bearings are correspondingly arranged in the mounting sleeve 12 on the upper and lower sides of the blocking member 121; a limiting shoulder 311 is provided at the lower part of the rotor shaft 31 for blocking and cooperating with the inner ring of the bearing located on the upper side of the blocking member 121, and a limiting groove 312 is also provided at the lower part of the rotor shaft 31 and below the limiting shoulder 311, and a limiting snap ring is provided in the limiting groove 312 for blocking and cooperating with the inner ring of the bearing located on the lower side of the blocking member 121.

[0038] like Figure 3-5 As shown, in order to ensure stable and reliable connection and convenient assembly, the stator assembly 2 includes a stator core 21, and the stator core 21 is provided with a core through hole 211 for sleeved on the outside of the installation sleeve 12, and a stop structure is provided between the core through hole 211 and the installation sleeve 12; the outside of the installation sleeve 12 is provided with a mounting shoulder 122 for blocking and limiting with the lower edge of the core through hole 211 when the stator core 21 is sleeved on the outside of the installation sleeve 12. The stop structure includes but is not limited to a stop convex strip and a stop groove that cooperates with the stop convex strip, such as Figure 4 , 5 shown.

[0039] Furthermore, the stator core 21 is composed of a plurality of axially stacked ferrite core bodies, a plurality of riveted protrusions are evenly provided on one side of the ferrite core body, and riveted concave points corresponding to the riveted protrusions are formed on the other side of the ferrite core body. When the plurality of ferrite core bodies are axially stacked, two adjacent ferrite core bodies are riveted and fixed by riveting the protrusions and the concave points, which can make the connection between adjacent ferrite core bodies more stable and tighter, improve the structural strength, and thus improve the reliability.

[0040] like Figure 4-6 As shown, in order to more stably assemble the magnetic tiles, the rotor assembly 3 also includes a magnetic ring bracket 33 and a plurality of magnetic tiles 34, which are arranged on the inner side of the rotor housing 32 and relatively fixedly connected to the rotor housing 32. The magnetic ring bracket 33 is provided with an embedding groove 331 for embedding the corresponding magnetic tile 34. The two side walls of the embedding groove 331 are inclined from the inner side of the magnetic ring bracket 33 to the outer side of the magnetic ring bracket 33, which can limit and position the magnetic tile 34. During assembly, the magnetic tile 34 is correspondingly embedded and positioned in the embedding groove 331, and then the magnetic ring bracket 33 equipped with the magnetic tile 34 is pressed into the inner side of the rotor housing 32.

[0041] Furthermore, the magnetic ring bracket 33 is made of plastic material, and the plurality of magnetic tiles 34 are circumferentially distributed on the magnetic ring bracket 33 and are integrally injection molded with the magnetic ring bracket 33 to form a whole. The plurality of magnetic tiles are fixed by the magnetic ring bracket, and all the magnetic tiles are integrally injection molded with the magnetic ring bracket, which ensures accurate positioning of the magnetic tiles, reduces the installation process of the magnetic tiles, and solves the problems of difficult installation and positioning of the magnetic tiles and complex assembly in the prior art.

Claims

1. A micromotor for a fruit and vegetable machine, characterized in that The invention comprises a mounting seat (1), a stator assembly (2) and a rotor assembly (3), wherein the stator assembly (2) is relatively fixedly arranged on the mounting seat (1), and the rotor assembly (3) is rotatably arranged on the mounting seat (1); the rotor assembly (3) comprises a rotor shaft (31) and a rotor housing (32) rotatably connected to the mounting seat (1), the rotor housing (32) being provided with a housing through hole (321) for the rotor shaft (31) to pass through, and the housing through hole (321) and the rotor shaft (31) are fixed by riveting so that the rotor shaft (31) and the rotor housing (32) are coaxially connected.

2. According to claim 1, a micromotor for a fruit and vegetable machine is characterized in that A housing boss (322) is formed on the inner side of the rotor housing (32) and extends downward relative to the housing through hole (321); and / or a housing boss (322) is formed on the outer side of the rotor housing (32) and extends upward relative to the housing through hole (321).

3. According to claim 1, a micromotor for a fruit and vegetable machine is characterized in that The upper surface of the rotor housing (32) is provided with a heat dissipation hole (323) which is in communication with the inner cavity of the rotor housing (32).

4. The micromotor for a fruit and vegetable machine according to claim 1, characterized in that The mounting seat (1) comprises a mounting base plate (11) and a mounting sleeve (12) arranged on the mounting base plate (11); the mounting sleeve (12) is rotatably connected to the rotor shaft (31) via a bearing; and the stator assembly (2) is relatively fixedly arranged outside the mounting sleeve (12).

5. The micromotor for a fruit and vegetable machine according to claim 4, characterized in that A blocking member (121) is provided on the inner wall of the installation sleeve (12), and the two bearings are correspondingly arranged in the installation sleeve (12) on the upper and lower sides of the blocking member (121); a limiting shoulder (311) is provided at the lower part of the rotor shaft (31) for blocking and cooperating with the inner ring of the bearing located on the upper side of the blocking member (121); a limiting groove (312) is also provided at the lower part of the rotor shaft (31) and below the limiting shoulder (311); a limiting snap ring is provided in the limiting groove (312) for blocking and cooperating with the inner ring of the bearing located on the lower side of the blocking member (121).

6. The micromotor for a fruit and vegetable machine according to claim 4, characterized in that The stator assembly (2) comprises a stator core (21); the stator core (21) is provided with a core through hole (211) for being sleeved on the outside of a mounting sleeve (12); a rotation-stopping structure is provided between the core through hole (211) and the mounting sleeve (12); and the mounting sleeve (12) is provided with a mounting shoulder (122) on the outside of the mounting sleeve (12) for blocking and limiting cooperation with the lower edge of the core through hole (211) when the stator core (21) is sleeved on the outside of the mounting sleeve (12).

7. The micromotor for a fruit and vegetable machine according to claim 6, characterized in that The stator core (21) is composed of a plurality of iron core sheets stacked in an axial direction, a plurality of riveted convex points are evenly arranged on one side of the iron core sheets, and riveted concave points corresponding to the riveted convex points are formed on the other side of the iron core sheets, and when the plurality of iron core sheets are stacked in an axial direction, two adjacent iron core sheets are riveted and fixed by the riveted convex points and the riveted concave points.

8. A micromotor for a fruit and vegetable machine according to any one of claims 1 to 7, characterized in that The rotor assembly (3) further comprises a magnetic ring support (33) and a plurality of magnetic tiles (34) arranged on the inner side of the rotor housing (32) and relatively fixedly connected to the rotor housing (32); the magnetic ring support (33) is provided with an embedding groove (331) for embedding corresponding magnetic tiles (34); and two side walls of the embedding groove (331) are arranged to be inclined towards each other from the inner side of the magnetic ring support (33) to the outer side of the magnetic ring support (33).

9. The micromotor for a fruit and vegetable machine according to claim 8, characterized in that The magnetic ring bracket (33) is made of plastic material, and a plurality of magnetic tiles (34) are distributed on the magnetic ring bracket (33) in a circular shape and are integrally injection-molded with the magnetic ring bracket (33) to form a whole.

Images