Food processing machine with good noise reduction effect

Abstract

The utility model discloses a food processing machine with good noise reduction effect, which relates to the field of household electrical appliances. The food processing machine comprises a machine body, a cup body arranged on the machine body and having a grinding chamber, a grinding device arranged in the grinding chamber and a brushless motor connected to the grinding device in a transmission manner. The brushless motor comprises a shell and a stator winding assembly and a permanent magnet rotor assembly arranged in the shell. The shell comprises an upper end plate, a lower end plate located below the upper end plate and a side plate. One of the upper end plate and the lower end plate is fixedly connected to one end of the side plate, and the other of the upper end plate and the lower end plate is covered on the other end of the side plate. The side plate circumferentially covers the stator winding assembly, so that the permanent magnet rotor assembly is completely enclosed in an installation chamber formed by the upper end plate, the lower end plate and the side plate, so that the noise generated when the brushless motor is working is completely isolated inside the shell, the noise propagating outward during work is effectively reduced, and the noise reduction effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a food processing machine with good noise reduction effect. Background Art

[0002] With the development of society and the improvement of living standards, people's pursuit of dietary diversity and healthy diet is constantly increasing. Therefore, various industrial food processing machines are gradually miniaturized and enter thousands of households. For example, soybean milk machines not only meet people's needs for healthy diet and nutrition, but also greatly improve people's quality of life, and are therefore loved by people.

[0003] Existing food processors usually include a cup body with a grinding chamber, a grinding device, and a motor that drives the grinding device to rotate. When using a food processor, the user places the food in the grinding chamber, and the motor rotates at high speed and drives the grinding device to rotate to process the food. Most of the existing motors are brushed motors, but this type of motor will generate loud noise and vibration when working, and the user experience is poor. In order to improve the processing effect, most manufacturers will use brushless motors instead of brushed motors. Brushless motors have many advantages such as long life, low vibration, low noise, and no carbon powder pollution. For example, Chinese utility model 202120355518.2 discloses a flat food processing machine, wherein the motor thereof comprises a motor shaft, a rotor wrapping the motor shaft, a stator wrapping the rotor and a bracket forming an axial end face of the motor, the bracket being located above the stator and / or below the stator, and the bracket being divided into an upper end cover located above the rotor and the stator and a lower end cover located below the rotor and the stator, wherein the rotor and the stator are clamped and fixed by a fixed connection between the upper end cover and the lower end cover, wherein the upper end cover is provided with a side wall extending downward and the lower end cover is provided with a side wall extending upward, and the noise generated by the rotor during rotation will be directly transmitted to the outside through the gap between the two side walls, and a longer connecting piece is required to connect the upper end cover and the lower end cover, and the coaxiality of the rotor and the stator in the bracket cannot be guaranteed, and the assembly precision is low. After the motor shaft of the motor is connected to the crushing device, the crushing device will cause a deflection, resulting in poor crushing effect, which seriously affects the consumer experience. Utility Model Content

[0004] The purpose of the utility model is to provide a food processing machine with good noise reduction effect, so as to solve the problem that the noise generated by the brushless motor in the existing food processing machine during operation can be directly transmitted to the outside through the gap between the side walls of the bracket and the poor fixing and assembly accuracy of the motor body causes the coaxiality of the brushless motor and the crushing device to be low.

[0005] To achieve the above-mentioned purpose, the utility model provides a food processing machine with good noise reduction effect, including a machine body, a cup body arranged on the machine body and having a grinding chamber, a grinding device arranged in the grinding chamber, and a brushless motor transmission-connected to the grinding device, the brushless motor including a shell and a stator winding assembly and a permanent magnet rotor assembly arranged in the shell, the shell including an upper end plate, a lower end plate located below the upper end plate, and a side plate, one of the upper end plate and the lower end plate is fixedly connected to one end of the side plate, the other of the two is covered on the other end of the side plate, and the side plate circumferentially covers the stator winding assembly.

[0006] The present application sets a brushless motor and, by virtue of the characteristics of the brushless motor, allows the user to use the food processor to process food with lower noise from the rotation of the motor, thereby achieving noise reduction. At the same time, the brushless motor can achieve variable frequency control, so that the food processor can control the brushless motor to output different speeds according to different food ingredients and processing processes, thereby achieving better and more complete processing effects on food ingredients and improving the taste of the finished food ingredients. In addition, the brushless motor occupies less space, which helps to improve the compactness of the internal structure of the entire machine, reduce the space occupied by the food processor, and facilitate storage by users.

[0007] At the same time, by setting the shell to include an upper end plate, a lower end plate located below the upper end plate, and a side plate, one of the upper end plate and the lower end plate is fixedly connected to one end of the side plate, and the other of the two is covered on the other end of the side plate, and the side plate circumferentially covers the stator winding assembly. On the one hand, when assembling the brushless motor, the assembler can place the stator winding assembly and the permanent magnet rotor assembly in the side plate, and then cover the upper end plate or the lower end plate on the other end of the side plate to realize the assembly of the brushless motor, which makes the assembly more convenient and quick, and helps to improve the assembly efficiency of the brushless motor; on the other hand, the stator winding assembly and the permanent magnet rotor assembly serve as the power source of the brushless motor. After the brushless motor is assembled, the permanent magnet rotor assembly is completely enclosed in the installation cavity formed by the upper end plate, the lower end plate and the side plate, so that the noise generated when the brushless motor is working is completely isolated inside the shell, effectively reducing the noise propagating outward during operation, and further improving the noise reduction effect. In addition, the upper end plate or the lower end plate directly covers the other end of the side plate. Compared with the method of connecting the upper end cover and the lower end cover through a longer connecting piece, the upper end plate or the lower end plate is directly in contact with the side plate, which improves the accuracy of the connection between the two, so that the stator winding assembly and the permanent magnet rotor assembly are more accurately fixed in the shell, which helps to improve the assembly accuracy, and then improve the coaxiality of the whole machine, so that the rotation of the crushing device is more stable, which helps to improve the crushing effect.

[0008] In a preferred implementation of a food processor with good noise reduction effect, the other of the upper end plate and the lower end plate is provided with a connecting portion, and the other end of the side plate is provided with a fixing portion cooperating with the connecting portion.

[0009] By providing a connecting portion on the other of the upper end plate and the lower end plate, and providing a fixing portion that cooperates with the connecting portion on the other end of the side plate, the upper end plate or the lower end plate can be assembled into a shell through the connection between the connecting portion and the fixing portion, which simplifies the assembly steps and helps to further improve the assembly efficiency.

[0010] In a preferred implementation of a food processor with good noise reduction effect, the other of the upper end plate and the lower end plate is provided with an extended ring rib extending into the side plate, the connecting part includes an external thread arranged on the outer wall of the extended ring rib, and the fixing part includes an internal thread arranged on the inner wall of the side plate and matching with the external thread.

[0011] By providing an extended ring rib extending into the side plate on the other of the upper end plate and the lower end plate, the outer wall of the extended ring rib is provided with an external thread, and the inner wall of the side plate is provided with an internal thread matching the external thread, so that when assembling the brushless motor, the upper end plate or the lower end plate can be screwed onto the side plate through the external thread and the internal thread to realize the assembly of the shell, further improving the assembly efficiency. At the same time, the extended ring rib can realize the radial limitation of the upper end plate or the lower end plate through the side plate while realizing the connection with the side plate, effectively avoiding the displacement of the upper end plate or the lower end plate, causing the stator winding assembly and the permanent magnet rotor assembly to move, resulting in the lower coaxiality of the brushless motor and the crushing device, ensuring the coaxiality of the whole machine, and further improving the working stability. In addition, the connecting parts connecting the two are omitted, further improving the compactness of the internal structure, and at the same time reducing the production cost.

[0012] In a preferred implementation of a food processor with good noise reduction effect, the connecting part includes a connecting hole formed on the other of the upper end plate and the lower end plate, the fixing part includes a fixing hole formed on the side plate, and the food processor also includes a connecting member, which passes through the connecting hole and is fastened to the connecting hole.

[0013] By setting the connecting part to include a connecting hole formed on the other of the upper end plate and the lower end plate, the fixing part includes a fixing hole formed on the side plate, and the food processor also includes a connecting part, the connecting part passes through the connecting hole and is fastened to the connecting hole, so that when the brushless motor is assembled, the upper end plate or the lower end plate is fixedly connected to the side plate through the connecting part, and radial positioning can be achieved through the connecting part while achieving the connection, thereby further improving the coaxiality of the upper end cover or the lower end cover and the side plate, thereby improving the coaxiality of the entire brushless motor.

[0014] In a preferred implementation of a food processor with good noise reduction effect, a sealing member is further provided between the other of the upper end plate and the lower end plate and the side plate.

[0015] By setting a seal between the upper end plate or the lower end plate, the sealing performance of the connection between the upper end plate or the lower end plate and the side plate is improved, thereby further improving the noise reduction effect and effectively reducing the propagation of noise in the housing to the outside. At the same time, the seal can also be used to achieve sealing inside the housing to prevent the lubricating oil for lubricating the permanent magnet rotor assembly from overflowing through the gap between the two, thereby ensuring the lubrication effect and improving the stability of the whole machine operation.

[0016] In a preferred implementation of a food processor with good noise reduction effect, the machine body includes a machine body shell, a first noise reduction cavity is formed between the machine body shell and the shell, and a second noise reduction cavity is formed between the shell and the stator winding assembly and the permanent magnet rotor assembly.

[0017] By forming a first noise reduction cavity between the body shell and the shell, and forming a second noise reduction cavity between the shell and the stator winding assembly and the permanent magnet rotor assembly, the noise generated by the permanent magnet rotor assembly during rotation is first reduced by the second noise reduction cavity, and then the noise transmitted outward through the shell can be further reduced by the first noise reduction cavity, so that the noise generated by the brushless motor during operation can be doubly reduced by the first noise reduction cavity and the second noise reduction cavity, thereby further reducing the propagation of noise outward and improving the user experience.

[0018] In a preferred implementation of a food processor with good noise reduction effect, the cup body is detachably connected to the top of the body, the body includes a body shell, the brushless motor is arranged in the body shell, and the upper end plate or the lower end plate is fixedly connected to the body shell.

[0019] By setting the cup body to be detachably connected to the upper part of the machine body, the user can add liquid or pour pulp by directly taking the cup body when using the food processor, which is more convenient and quick to operate and helps to improve the user experience. At the same time, the upper end plate or the lower end plate is fixedly connected to the machine body shell to fix the shell and ensure the stability of the brushless motor in the machine body shell.

[0020] In a preferred implementation of a food processor with good noise reduction effect, the machine body includes a machine body shell, the cup body and the brushless motor are arranged in the machine body shell, and the upper end plate or the lower end plate is fixedly connected to the machine body shell; or,

[0021] The bottom wall of the cup body forms an upper end plate, the side plate and the bottom wall of the cup body are formed in one piece, and the lower end plate covers the other end of the side plate.

[0022] By placing the cup body and the brushless motor in the housing, the cup body and the brushless motor are integrated, the whole machine is more integrated, and it is more convenient for users to use. At the same time, the upper end plate or the lower end plate is fixedly connected to the housing to fix the housing and ensure the stability of the brushless motor in the housing.

[0023] By forming the upper end plate from the bottom wall of the cup body, and the side plate and the bottom wall of the cup body are integrally formed, the structure of the upper end plate is omitted, which not only eliminates the assembly step of fixing the upper end plate and the side plate, further improving the assembly efficiency, but also further reduces the distance between the brushless motor and the crushing device, thereby making the transmission of the brushless motor more stable, effectively avoiding the situation where the brushless motor is far away from the crushing device, resulting in a longer rotating shaft, causing the rotating shaft to be set low coaxiality, and then causing the crushing device to swing when rotating, affecting the food processing, which helps to improve the crushing effect. At the same time, it can make the axial height of the whole machine lower and thinner, further reduce the occupied space of the food processor, and reduce the center of gravity height of the whole machine, making the food processor more stable when working.

[0024] In a preferred implementation of a food processor with good noise reduction effect, the stator winding assembly includes a stator core, the inner wall of the side plate is provided with a first positioning shoulder matched with the stator core, and the upper end plate or the lower end plate is provided with a second shoulder matched with the stator core; or,

[0025] The upper end plate or the lower end plate is provided with a first shaft shoulder and a second shaft shoulder matched with the stator core.

[0026] By arranging a first positioning shoulder and a second shoulder on the inner wall of the side plate to cooperate with the stator core, the stator core can be fixed in the outer shell through the positioning of the side plate and the upper end plate or the lower end plate, thereby improving its position reliability, preventing the stator core from radially swinging or axially moving, and thus avoiding the situation where the coaxiality of the brushless motor and the crushing device becomes low due to its movement, further ensuring the coaxiality of the brushless motor and the cup body, and further improving the working stability.

[0027] In a preferred implementation of a food processor with good noise reduction effect, one of the upper end plate and the lower end plate is integrally formed with the side plate; or,

[0028] The upper end plate is fixedly connected to the side plate, and the side wall of the upper end plate is matched and fixed with the inner wall of the side plate.

[0029] By integrally forming one of the upper end plate and the lower end plate with the side plate, the step of connecting the upper end plate or the lower end plate to the side plate is eliminated, thereby further improving assembly efficiency and eliminating the connecting parts connecting the two, which helps to further reduce production costs.

[0030] By fixing the side wall of the upper end plate with the inner wall of the side plate, the coaxiality of the two is further improved through the cooperation between the side wall of the upper end plate and the inner wall of the side plate, thereby further improving the coaxiality of the brushless motor and the crushing device, thereby ensuring the reliability of food processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0032] Figure 1 A cross-sectional view of a food processor in one embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the structure of a brushless motor in one embodiment of the utility model;

[0034] Figure 3 It is a cross-sectional view of a brushless motor in one embodiment of the utility model.

[0035] List of parts and reference numerals:

[0036] 1-machine body; 2-cup body, 21-crushing chamber; 3-crushing device; 4-brushless motor, 41-upper end plate, 411-extended ring rib, 42-lower end plate, 43-side plate, 44-permanent magnet rotor assembly, 45-stator winding assembly. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0038] It should be noted that many specific details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific implementation methods disclosed below.

[0039] like Figures 1 to 3 As shown, the utility model provides a food processing machine with good noise reduction effect, including a machine body 1, a cup body 2 arranged on the machine body 1 and having a grinding chamber 21, a grinding device 3 arranged in the grinding chamber 21 and a brushless motor 4 connected to the grinding device 3, the brushless motor 4 includes a shell and a stator winding assembly 45 and a permanent magnet rotor assembly 44 arranged in the shell, the shell includes an upper end plate 41, a lower end plate 42 located below the upper end plate 41 and a side plate 43, one of the upper end plate 41 and the lower end plate 42 is fixedly connected to one end of the side plate 43, and the other of the two is covered on the other end of the side plate 43, and the side plate 43 circumferentially covers the stator winding assembly 45, preferably, as Figure 3 As shown, the lower end plate 42 is fixedly connected to the bottom end of the side plate 43 , and the upper end plate 41 covers the top end of the side plate 43 .

[0040] The present application sets a brushless motor 4, and with the help of the characteristics of the brushless motor 4, when the user uses the food processor to process food, the noise of the motor rotation is lower, thereby achieving the effect of noise reduction. At the same time, the brushless motor 4 can realize frequency conversion control, so that the food processor can control the brushless motor 4 to output different rotation speeds according to different food ingredients and processing processes, which can make the processing effect of the food better and more complete, and improve the taste of the food output. In addition, the brushless motor 4 occupies a small space, which helps to improve the compactness of the internal structure of the whole machine, reduce the space occupied by the food processor, and facilitate user storage.

[0041] At the same time, by setting the shell to include an upper end plate 41, a lower end plate 42 located below the upper end plate 41, and a side plate 43, one of the upper end plate 41 and the lower end plate 42 is fixedly connected to one end of the side plate 43, and the other of the two is covered on the other end of the side plate 43, and the side plate 43 circumferentially covers the stator winding assembly 45. On the one hand, when assembling the brushless motor 4, the assembler can place the stator winding assembly 45 and the permanent magnet rotor assembly 44 in the side plate 43, and then cover the upper end plate 41 or the lower end plate 42 on the other end of the side plate 43. The assembly of the brushless motor 4 can be realized, and the assembly is more convenient and quick, which helps to improve the assembly efficiency of the brushless motor 4; on the other hand, the stator winding assembly 45 and the permanent magnet rotor assembly 44 serve as the power source of the brushless motor 4. After the brushless motor 4 is assembled, the permanent magnet rotor assembly 44 is completely enclosed in the installation cavity formed by the upper end plate 41, the lower end plate 42 and the side plate 43, so that the noise generated by the brushless motor 4 during operation is completely isolated inside the shell, effectively reducing the noise propagating outward during operation, and further improving the noise reduction effect. In addition, the upper end plate 41 or the lower end plate 42 is directly covered on the other end of the side plate 43. Compared with the method of connecting the upper end cover and the lower end cover through a longer connecting piece, the upper end plate 41 or the lower end plate 42 is directly in contact with and connected to the side plate 43, which improves the accuracy of the connection between the two, so that the stator winding assembly 45 and the permanent magnet rotor assembly 44 are more accurately fixed in the shell, which helps to improve the assembly accuracy, and then improve the coaxiality of the whole machine, so that the rotation of the crushing device 3 is more stable, which helps to improve the crushing effect.

[0042] It should be noted that in the present application, the connection between the upper end plate 41 or the lower end plate 42 and the side plate 43 is completely covered, and an air inlet and an air outlet are provided on the upper end plate 41 or the lower end plate 42 or the side plate 43. The stator winding assembly 45 is only exposed at the air inlet and the air outlet, which will not be repeated here.

[0043] As a preferred implementation of the present application, Figure 3 As shown, one of the upper end plate 41 and the lower end plate 42 is provided with a connecting portion, and the other end of the side plate 43 is provided with a fixing portion that cooperates with the connecting portion.

[0044] By providing a connecting portion on one of the upper end plate 41 and the lower end plate 42, and providing a fixing portion that cooperates with the connecting portion on the other end of the side plate 43, the upper end plate 41 or the lower end plate 42 can be connected to the connecting portion and the fixing portion to realize the combined assembly of the shell, which simplifies the assembly steps and helps to further improve the assembly efficiency.

[0045] It should be noted that the present application does not specifically limit the structures of the connecting portion and the fixing portion, which may be any one of the following embodiments:

[0046] Example 1: Figure 3 As shown, in this embodiment, the other of the upper end plate 41 and the lower end plate 42 is provided with an extended annular rib 411 extending into the side plate 43, the connecting portion includes an external thread provided on the outer wall of the extended annular rib 411, and the fixing portion includes an internal thread provided on the inner wall of the side plate 43 and matching with the external thread. Preferably, as shown in FIG. Figure 3 As shown, the upper end plate 41 is provided with an extended annular rib 411 extending downward.

[0047] By providing an extended annular rib 411 extending into the side plate 43 on one of the upper end plate 41 and the lower end plate 42, the outer wall of the extended annular rib 411 is provided with an external thread, and the inner wall of the side plate 43 is provided with an internal thread matching the external thread, so that when the brushless motor 4 is assembled, the upper end plate 41 or the lower end plate 42 is screwed onto the side plate 43 through the external thread and the internal thread to realize the assembly of the shell, further improving the assembly efficiency. At the same time, the extended annular rib 411 can realize radial positioning of the upper end plate 41 or the lower end plate 42 through the side plate 43 while realizing connection with the side plate 43, effectively avoiding the displacement of the upper end plate 41 or the lower end plate 42, causing the stator winding assembly 45 and the permanent magnet rotor assembly 44 to move, resulting in a lower coaxiality of the brushless motor 4 and the crushing device 3, ensuring the coaxiality of the whole machine, and further improving the working stability. In addition, the connecting components connecting the two are omitted, further improving the compactness of the internal structure, and at the same time reducing the production cost.

[0048] Embodiment 2: In this embodiment, the connecting portion includes a connecting hole formed on the other of the upper end plate 41 and the lower end plate 42, the fixing portion includes a fixing hole formed on the side plate 43, and the food processor also includes a connecting member, which passes through the connecting hole and is fastened to the connecting hole. Specifically, the connecting member is a stud.

[0049] By setting the connecting part to include a connecting hole formed on the other of the upper end plate 41 and the lower end plate 42, the fixing part includes a fixing hole formed on the side plate 43, and the food processor also includes a connecting piece, the connecting piece passes through the connecting hole and is fastened to the connecting hole, so that when the brushless motor 4 is assembled, the upper end plate 41 or the lower end plate 42 is fixedly connected to the side plate 43 through the connecting piece, and radial positioning can be achieved through the connecting piece while achieving the connection, thereby further improving the coaxiality of the upper end cover or the lower end cover and the side plate 43, and then improving the coaxiality of the entire brushless motor 4.

[0050] As a preferred implementation of the present application, Figure 3 As shown, a sealing member is further provided between the other of the upper end plate 41 and the lower end plate 42 and the side plate 43 .

[0051] By providing a seal between the upper end plate 41 or the lower end plate 42, the sealing performance of the connection between the upper end plate 41 or the lower end plate 42 and the side plate 43 is improved, thereby further improving the noise reduction effect and effectively reducing the propagation of noise in the housing to the outside. At the same time, the seal can also be used to achieve sealing inside the housing, preventing the lubricating oil for lubricating the permanent magnet rotor assembly 44 from overflowing through the gap between the two, thereby ensuring the lubrication effect and improving the stability of the whole machine operation.

[0052] As a preferred implementation of the present application, Figure 3 As shown, the machine body 1 includes a machine body 1 shell, a first noise reduction cavity is formed between the machine body 1 shell and the housing, and a second noise reduction cavity is formed between the housing and the stator winding assembly 45 and the permanent magnet rotor assembly 44 .

[0053] By forming a first noise reduction cavity between the outer shell of the machine body 1 and the shell, and forming a second noise reduction cavity between the shell and the stator winding assembly 45 and the permanent magnet rotor assembly 44, the noise generated by the permanent magnet rotor assembly 44 during rotation is first reduced by the second noise reduction cavity, and then the noise transmitted outward through the shell can be further reduced by the first noise reduction cavity, so that the noise generated by the brushless motor 4 during operation can be doubly reduced by the first noise reduction cavity and the second noise reduction cavity, thereby further reducing the propagation of noise outward and improving the user experience.

[0054] It should be noted that the present application does not specifically limit the structure of the food processor, which may be any one of the following embodiments:

[0055] Embodiment 1: In this embodiment, the cup body 2 is detachably connected to the top of the body 1, the body 1 includes a body 1 shell, the brushless motor 4 is arranged in the body 1 shell, and the upper end plate 41 or the lower end plate 42 is fixedly connected to the body 1 shell.

[0056] By setting the cup body 2 to be detachably connected to the upper part of the machine body 1, the user can add liquid or pour pulp by directly taking the cup body 2 when using the food processor, which is more convenient and quick to operate, and helps to improve the user experience. At the same time, the upper end plate 41 or the lower end plate 42 is fixedly connected to the outer shell of the machine body 1 to fix the outer shell and ensure the stability of the brushless motor 4 in the outer shell of the machine body 1.

[0057] Embodiment 2: In this embodiment, the machine body 1 includes a machine body 1 shell, and the cup body 2 and the brushless motor 4 are arranged in the machine body 1 shell.

[0058] It should be further noted that the present application does not specifically limit the structure of the lower housing of this embodiment, which can be any one of the following embodiments:

[0059] Embodiment 1: In this embodiment, the upper end plate 41 or the lower end plate 42 is fixedly connected to the outer shell of the body 1.

[0060] By placing the cup body 2 and the brushless motor 4 in the housing of the machine body 1, the cup body 2 and the brushless motor 4 are integrated, the whole machine is more integrated, and it is more convenient for users to use. At the same time, the upper end plate 41 or the lower end plate 42 is fixedly connected to the housing of the machine body 1 to fix the housing and ensure the stability of the brushless motor 4 in the housing of the machine body 1.

[0061] Embodiment 2: In this embodiment, the bottom wall of the cup body 2 forms an upper end plate 41 , the side plate 43 and the bottom wall of the cup body 2 are integrally formed, and the lower end plate 42 covers the other end of the side plate 43 .

[0062] By forming the upper end plate 41 with the bottom wall of the cup body 2, the side plate 43 and the bottom wall of the cup body 2 are integrally formed, and the structure of the upper end plate 41 is omitted, not only can the assembly step of fixing the upper end plate 41 and the side plate 43 be omitted, further improving the assembly efficiency, but also further reducing the distance between the brushless motor 4 and the crushing device 3, so that the transmission of the brushless motor 4 is more stable, effectively avoiding the situation that the brushless motor 4 is far away from the crushing device 3, resulting in a longer rotating shaft, causing a lower coaxiality of the rotating shaft, and then causing the crushing device 3 to swing when rotating, affecting the processing of food, which helps to improve the crushing effect. At the same time, the axial height of the whole machine can be made lower and thinner, further reducing the occupied space of the food processor, and at the same time reducing the center of gravity height of the whole machine, making the food processor more stable when working.

[0063] As a preferred implementation of the present application, Figure 3As shown, the stator winding assembly 45 includes a stator core, the inner wall of the side plate 43 is provided with a first positioning shoulder that cooperates with the stator core, and the upper end plate 41 or the lower end plate 42 is provided with a second shoulder that cooperates with the stator core; or, the upper end plate 41 or the lower end plate 42 is provided with a first shoulder and a second shoulder that cooperate with the stator core. Specifically, two positioning steps that cooperate with the stator core can be provided on the upper end plate 41 or the lower end plate 42 to form a first shoulder and a second shoulder.

[0064] By providing a first positioning shoulder that cooperates with the stator core on the inner wall of the side plate 43, and providing a second shoulder that cooperates with the stator core on the upper end plate 41 or the lower end plate 42, the stator core is fixed in the shell through the positioning of the side plate 43 and the upper end plate 41 or the lower end plate 42, thereby improving its position reliability, preventing the stator core from radially swinging or axially moving, and thus avoiding the movement of the stator core that causes the coaxiality of the brushless motor 4 and the crushing device 3 to become lower, thereby ensuring the coaxiality of the entire machine and further improving the working stability.

[0065] It should be noted that the present application does not specifically limit the molding method of the shell, which can be any one of the following embodiments:

[0066] Example 1: Figure 3 As shown, in this embodiment, one of the upper end plate 41 and the lower end plate 42 is integrally formed with the side plate 43 .

[0067] By integrally forming one of the upper end plate 41 and the lower end plate 42 with the side plate 43, the step of connecting and matching the upper end plate 41 or the lower end plate 42 with the side plate 43 is eliminated, thereby further improving assembly efficiency and eliminating the connecting components connecting the two, which helps to further reduce production costs.

[0068] Embodiment 2: In this embodiment, the upper end plate 41 is fixedly connected to the side plate 43 , and the side wall of the upper end plate 41 is fixedly matched with the inner wall of the side plate 43 .

[0069] By fixing the side wall of the upper end plate 41 with the inner wall of the side plate 43, the coaxiality of the two is further improved through the cooperation between the side wall of the upper end plate 41 and the inner wall of the side plate 43, thereby further improving the coaxiality of the brushless motor 4 and the crushing device 3, thereby ensuring the reliability of food processing.

[0070] The technical solution protected by the present utility model is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any embodiment with the technical solution of one or more other embodiments is within the protection scope of the present utility model. Although the present utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model are within the scope of protection claimed by the present utility model.

Claims

1. A food processing machine with good noise reduction effect, comprising a machine body, a cup body provided on the machine body and having a grinding chamber, a grinding device provided in the grinding chamber, and a brushless motor drivingly connected to the grinding device, characterized in that: The brushless motor includes a shell and a stator winding assembly and a permanent magnet rotor assembly arranged in the shell. The shell includes an upper end plate, a lower end plate located below the upper end plate, and a side plate. One of the upper end plate and the lower end plate is fixedly connected to one end of the side plate, and the other of the two is covered on the other end of the side plate. The side plate circumferentially covers the stator winding assembly.

2. A food processing machine with good noise reduction effect according to claim 1, characterized in that: The other of the upper end plate and the lower end plate is provided with a connecting portion, and the other end of the side plate is provided with a fixing portion matched with the connecting portion.

3. A food processing machine with good noise reduction effect according to claim 2, characterized in that: The other of the upper end plate and the lower end plate is provided with an extension ring rib extending into the side plate, the connecting portion includes an external thread provided on the outer side wall of the extension ring rib, and the fixing portion includes an internal thread provided on the inner wall of the side plate and matching with the external thread.

4. A food processing machine with good noise reduction effect according to claim 2, characterized in that: The connecting portion includes a connecting hole formed on the other of the upper end plate and the lower end plate, the fixing portion includes a fixing hole formed on the side plate, and the food processor also includes a connecting member that passes through the connecting hole and is fastened to the connecting hole.

5. A food processing machine with good noise reduction effect according to claim 1, characterized in that: A sealing member is further provided between the other of the upper end plate and the lower end plate and the side plate.

6. A food processing machine with good noise reduction effect according to claim 1, characterized in that: The machine body comprises a machine body shell, a first noise reduction cavity is formed between the machine body shell and the shell, and a second noise reduction cavity is formed between the shell, the stator winding assembly and the permanent magnet rotor assembly.

7. A food processing machine with good noise reduction effect according to claim 1, characterized in that: The cup body is detachably connected to the upper part of the machine body. The machine body includes a machine body shell. The brushless motor is arranged in the machine body shell. The upper end plate or the lower end plate is fixedly connected to the machine body shell.

8. A food processing machine with good noise reduction effect according to claim 1, characterized in that: The machine body comprises a machine body shell, the cup body and the brushless motor are arranged in the machine body shell, and the upper end plate or the lower end plate is fixedly connected to the machine body shell; or, The bottom wall of the cup body forms the upper end plate, the side plate and the bottom wall of the cup body are formed in one piece, and the lower end plate covers the other end of the side plate.

9. A food processing machine with good noise reduction effect according to claim 1, characterized in that: The stator winding assembly includes a stator core, the inner wall of the side plate is provided with a first positioning shoulder matched with the stator core, and the upper end plate or the lower end plate is provided with a second shoulder matched with the stator core; or, The upper end plate or the lower end plate is provided with a first shaft shoulder and a second shaft shoulder matched with the stator core.

10. A food processing machine with good noise reduction effect according to claim 1, characterized in that: One of the upper end plate and the lower end plate is integrally formed with the side plate; or, The upper end plate is fixedly connected to the side plate, and the side wall of the upper end plate is matched and fixed with the inner wall of the side plate.

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