Food processor capable of working stably

Abstract

The utility model discloses a food processor capable of working stably, which relates to the field of life electric appliances and comprises a built-in main machine and a cup body, a reciprocating motion mechanism is arranged in the main machine, a stirring piece in transmission connection with an output shaft of the reciprocating motion mechanism is arranged in the cup body, and the reciprocating motion mechanism comprises the output shaft and a gear assembly. The gear assembly can drive the output shaft to rotate and reciprocate in the axial direction of the output shaft at the same time, the reciprocating mechanism further comprises a shell provided with a mounting cavity, the gear assembly and the output shaft are arranged in the mounting cavity, and the shell is provided with an avoiding part for the bottom end of the output shaft to reciprocate. A sealing structure for isolating the mounting cavity from the outer side of the shell is further arranged between the avoiding part and the output shaft, so that the mounting cavity is isolated from the outer side of the shell, and the situation that a gear, the output shaft and the like have relatively high transmission noise and even are blocked due to the fact that dirt such as external dust and carbon powder enters the mounting cavity is effectively avoided; the transmission stability of the gear and the output shaft is ensured, and the running stability of the whole machine is improved.

Description

[0001] This application claims the priority of Chinese patent application 2023112960896, filed on September 28, 2023, and this application cites the full text of the above-mentioned Chinese patent application. Technical Field

[0002] The utility model relates to the technical field of household electrical appliances, in particular to a food processing machine with stable operation. Background Art

[0003] The existing food processor includes a cup body with a crushing chamber, a crushing device arranged in the crushing chamber, and a motor located under the cup body and driving the crushing device to rotate. When using the food processor, the user places the food into the crushing chamber, and the crushing device rotates at high speed driven by the motor to process the food. However, the existing food processors, especially meat grinders, generally have poor crushing performance when cutting food, especially when crushing vegetable leaves. Since the vegetable leaves are light, some of the vegetable leaves will adhere to the side or bottom of the cup body during the crushing process, and the crushing device is fixed in a horizontal position for rotation and cutting, and the vegetable leaves attached to the wall cannot be crushed, resulting in insufficient processing of the food. In order to solve the above problems, for example, Chinese utility model patent CN201720870853.X discloses an automatically lifting and rotating cutting stirring knife, which installs a crushing device on the upper end of the output shaft, and a rotatable center rod is installed at the bottom of the output shaft, the output shaft and the center rod are radially fixed and axially movable; a convex pin is radially arranged at the bottom of the output shaft, and a rotatable sliding sleeve is movably sleeved on the outer side of the center rod, and an inclined spiral sliding groove is arranged on the inner surface of the sliding sleeve, and the convex pin is movably embedded in the spiral sliding groove; the center rod drives the output shaft to rotate at a first speed, and the sliding sleeve rotates at a second speed. When there is a speed difference between the first speed and the second speed, the output shaft can rotate relative to the sliding sleeve, and the convex pin will move along the trajectory of the spiral sliding groove, driving the crushing device to rotate while cyclically lifting and lowering up and down, so that the crushing device moves up and down to achieve a larger range of cutting in the axial direction. In order to ensure that the center rod can move up and down, the above-mentioned scheme provides a through hole on the bottom wall of the gear box housing for the center rod to move up and down. However, the motor will generate a lot of carbon powder during operation. The carbon powder will fly into the gear box through the through hole. When it falls on gears and other components, especially between the sleeve and the center rod, the carbon powder will be stuck between the sleeve and the center rod, causing loud noise when the center rod moves up and down, and even causing it to be stuck and unable to move, thereby causing the entire machine to fail to work normally, seriously affecting the consumer experience. Utility Model Content

[0004] The utility model aims to provide a food processing machine with stable operation, so as to solve the problem that the carbon powder generated by the motor in the existing food processing machine can enter the gear box through the through hole for the central rod to move up and down, causing the central rod and other parts to get stuck.

[0005] To achieve the above-mentioned purpose, the utility model provides a food processing machine with stable operation, including a main unit with a built-in motor and a detachable cup body connected to the main unit, a reciprocating motion mechanism connected to the motor transmission is also provided in the main unit, a stirring member connected to the output shaft of the reciprocating motion mechanism transmission is provided in the cup body, the reciprocating motion mechanism includes an output shaft and a gear assembly sleeved on the outside of the output shaft, the gear assembly can drive the output shaft to rotate and reciprocate along its axial direction at the same time, the reciprocating motion mechanism also includes a shell provided with an installation cavity, the gear assembly and the output shaft are arranged in the installation cavity, the shell is provided with an avoidance portion for the bottom end of the output shaft to reciprocate, and a closed structure is provided between the avoidance portion and the output shaft to isolate the installation cavity from the outside of the shell.

[0006] The present application sets up a reciprocating motion mechanism to drive the output shaft to rotate and reciprocate along its axial direction at the same time, so that the stirring element driven by the output shaft can achieve a larger range of stirring in the axial direction, effectively avoiding the situation where the stirring element cannot cut the food due to the food being far away from the stirring element in the axial direction, resulting in insufficient processing of the food, which helps to improve the processing effect and efficiency of the food and enhance the user experience.

[0007] At the same time, the housing is provided with a relief portion for the bottom end of the output shaft to reciprocate, so that the output shaft can achieve axial reciprocating motion with the relief of the relief portion, avoiding the interference between the housing and the output shaft, which causes the output shaft to be unable to move axially, and ensuring the stability of the output shaft movement. At the same time, a closed structure is also provided between the relief portion and the output shaft to isolate the installation cavity from the outside of the housing, so that the relief portion can achieve the isolation of the installation cavity from the outside of the housing through the closed structure while achieving the avoidance of the output shaft, effectively avoiding the external dust, carbon powder and other stolen goods from entering the installation cavity, causing the gears and the output shaft to have a large transmission noise or even stuck, ensuring the transmission stability of the gear assembly and the output shaft, and improving the stability of the whole machine operation. At the same time, after isolating the installation cavity from the outside of the housing, the grease for lubricating the gears and the output shaft can be effectively stored in the installation cavity, ensuring the lubricating effect of the grease on each component, so that each component can work in a stable lubricating environment, further improving the transmission stability of each component, avoiding the grease from being thrown out of the installation cavity, causing the gears and other components to be unable to achieve lubrication and causing serious wear, which helps to ensure the transmission stability and improve the service life of each component.

[0008] In a preferred implementation of a food processing machine with stable operation, the housing and the output shaft are positioned away from the output shaft along the axial direction of the output shaft to form an escape cavity in the housing for reciprocating motion of the output shaft, the escape portion includes a cavity wall forming the escape cavity, and the bottom wall of the escape cavity is sealed to isolate the escape cavity from the outside of the housing, and the closed structure includes the escape cavity.

[0009] By setting the output shaft away from the output shaft along the axial direction of the output shaft at the position where the housing and the output shaft are aligned, a cavity for reciprocating motion of the output shaft is formed in the housing, so that the output shaft can achieve reciprocating motion with the help of the cavity, and at the same time, the bottom wall of the cavity is sealed, effectively isolating the installation cavity from the outside of the housing, preventing external dust, carbon powder and other stolen goods from entering the installation cavity, causing large transmission noise or even jamming of the gears and the output shaft, ensuring the transmission stability of the gears and the output shaft, and improving the stability of the whole machine operation. At the same time, the cavity can store excess grease for lubricating the gear assembly, effectively preventing the grease from escaping outward and causing the lubrication effect of the gear assembly and other transmission parts to deteriorate, and ensuring the lubrication effect of each transmission part.

[0010] In a preferred implementation of a food processor with stable operation, the motor is arranged on the outer side of the reciprocating motion mechanism, the motor includes a motor body and an output rod extending into the outer shell, the output rod includes an exposed portion exposed below the outer shell and above the motor body, and the exposed portion at least partially overlaps with the air avoidance cavity in the horizontal direction.

[0011] By arranging the motor on the outside of the reciprocating motion mechanism, compared with the method of arranging the motor below or above the reciprocating motion structure to realize transmission, the axial size of the whole machine is greatly compressed. At the same time, the exposed part and the avoidance cavity at least partially overlap in the horizontal direction, so that the motor and the reciprocating motion structure can overlap in the horizontal direction, thereby further shortening the space occupied by the motor and the reciprocating motion structure in the vertical direction, improving the compactness of the whole machine structure, and avoiding the situation where the center of gravity of the whole machine moves upward due to the excessive vertical height, resulting in a decrease in the stability of the whole machine.

[0012] In a preferred implementation of a food processing machine with stable operation, a width L1 of the exposed portion and the air-avoiding cavity in the lateral direction and a vertical height L2 of the motor body satisfy: 1 / 6L2≤L1≤1 / 3L2.

[0013] By setting the width L1 of the horizontal overlap between the exposed portion and the avoidance cavity and the vertical height L2 of the motor body to satisfy: 1 / 6L2≤L1≤1 / 3L2, it is avoided that the width of the horizontal overlap between the exposed portion and the avoidance cavity is too small relative to the vertical height of the motor body, resulting in a large space occupied by the motor in the axial direction and the size of the whole machine is too large; at the same time, it is avoided that the width of the horizontal overlap between the exposed portion and the avoidance cavity is too large relative to the vertical height of the motor body, resulting in the motor requiring a smaller overall size, resulting in its power being too small and unable to generate a large torque to process food.

[0014] In a preferred implementation of a food processor with stable operation, the motor body and the air-avoiding cavity at least partially overlap in the transverse direction.

[0015] By arranging the motor body and the air avoidance cavity to at least partially overlap in the horizontal direction, the motor as a whole is further moved upward relative to the reciprocating motion mechanism, thereby further shortening the space occupied by the motor and the reciprocating motion structure in the vertical direction, thereby improving the compactness of the overall structure.

[0016] In a preferred implementation of a food processor with stable operation, the avoidance portion includes a avoidance opening formed on the outer shell and arranged in alignment with the output shaft, the output shaft passes through the avoidance opening to achieve axial reciprocating motion, and the closed structure includes a seal arranged between the output shaft and the avoidance opening.

[0017] By setting the avoidance portion to include a avoidance opening formed in the housing and arranged in alignment with the output shaft, the output shaft can achieve axial reciprocating motion by passing through the avoidance opening, and at the same time, the molding structure of the avoidance portion can be relatively simple, which is convenient for the production of the housing, helps to reduce production costs, and improve production efficiency. In addition, the closed structure includes a seal provided between the output shaft and the avoidance opening, so that the installation cavity and the outer side of the housing are isolated by the seal, and external dust, carbon powder and other stolen goods are prevented from entering the installation cavity, causing the gears and the output shaft to have large transmission noise or even jamming, thereby ensuring the transmission stability of the gears and the output shaft and improving the stability of the whole machine operation. At the same time, it can store excess grease for lubricating the gear assembly, effectively preventing the grease from precipitating outward and causing the lubrication effect of the gear assembly and other transmission parts to deteriorate, thereby ensuring the lubrication effect of each transmission part.

[0018] In a preferred implementation of a food processing machine with stable operation, an annular rib extending upward and surrounding the outer side of the output shaft is further provided at the avoidance opening.

[0019] By providing the avoidance opening with an annular rib extending upward and surrounding the outside of the output shaft, on the one hand, the contact area between the avoidance opening and the output shaft is further increased by the annular rib, thereby further improving the sealing effect of the seal on the output shaft and the avoidance opening, and further preventing external carbon powder and the like from entering the installation cavity; on the other hand, the annular rib can improve the radial limiting effect of the output shaft, and prevent the output shaft from swinging too much during the axial movement, causing it to be unable to rotate normally, thereby further ensuring the stability of the whole machine operation.

[0020] In a preferred implementation of a food processor with stable operation, the seal includes a sealing section clamped between the output shaft and the avoidance port, and a first fixed section and a second fixed section respectively connected to the top and lower ends of the sealing section and extending outward, the first fixed section abuts against the top wall of the avoidance port, and the second fixed section abuts against the bottom wall of the avoidance port.

[0021] By configuring the seal to include a sealing section clamped between the output shaft and the avoidance port, and a first fixed section and a second fixed section respectively connected to the top and bottom ends of the sealing section and extending outward, and the first fixed section abuts against the top wall of the avoidance port, and the second fixed section abuts against the bottom wall of the avoidance port, the seal is sealed against the output shaft through the sealing section, and the seal is axially fixed by the first fixed section and the second fixed section, ensuring that the seal can be fixed at the avoidance port during the axial movement of the output shaft, thereby improving the stability of the connection between the seal and the avoidance port, avoiding the situation where the seal moves with the output shaft and causes its sealing failure, and further improving the sealing effect of the seal.

[0022] In a preferred implementation of a food processor with stable operation, the shell includes an upper shell and a lower shell, the lower shell is provided with a step for supporting the gear assembly, the step includes a first step arranged below the gear assembly and a second step arranged below the first step and used for installing the bearing.

[0023] By providing a step for supporting the gear assembly on the lower shell, the first step can support the gear assembly, ensure the stability and reliability of its position, avoid the situation where the gear assembly oscillates greatly when subjected to force, causing collision and friction between them, and improve the stability of rotation.

[0024] In a preferred implementation of a food processor with stable operation, the step surface of the second step is provided with annular ribs extending upward, and the gear assembly includes a main body abutting against the top of the first step and a transmission rib extending downward and surrounding the outside of the output shaft, and the transmission ribs and the annular ribs at least partially overlap in the transverse direction.

[0025] By providing an annular rib extending upward on the step surface of the second step, the gear assembly and the avoidance portion can be isolated by the contact between the annular rib and the bearing, thereby achieving a second seal. Even if a small amount of carbon powder enters the installation cavity, the annular rib can block the carbon powder, further preventing carbon powder from entering the gear assembly and causing serious wear. At the same time, by providing a transmission rib surrounding the outside of the output shaft in the gear assembly, and the transmission rib and the annular rib at least partially overlap in the horizontal direction, the transmission rib and the annular rib form a further barrier to carbon powder. When the carbon powder enters the installation cavity, the transmission rib achieves the first barrier to the carbon powder, and then the annular rib achieves the second barrier to the carbon powder, further enhancing the barrier to the carbon powder, and further preventing the carbon powder from entering the gear assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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:

[0027] Figure 1 A cross-sectional view of a reciprocating motion structure and a motor in one embodiment of the utility model;

[0028] Figure 2 A cross-sectional view of a reciprocating motion structure in one embodiment of the utility model;

[0029] Figure 3 This is a cross-sectional view of a reciprocating structure and a motor in another embodiment of the present invention.

[0030] List of parts and reference numerals:

[0031] 1-output shaft, 11-transmission part; 2-gear assembly, 21-first gear, 22-second gear, 221-main body, 222-transmission rib, 23-avoidance cavity, 24-avoidance opening, 241-annular rib; 3-housing, 31-upper shell, 32-lower shell, 321-first step, 322-second step, 3221-annular rib; 4-motor, 41-output rod, 42-motor body; 5-transmission part; 6-seal, 61-seal section, 62-first fixed section, 62-second fixed section. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] like Figures 1 to 3 As shown, the utility model provides a food processing machine with stable operation, including a main machine with a built-in motor 4 and a detachable cup body connected to the main machine, a reciprocating mechanism connected to the motor 4 is also provided in the main machine, a stirring member connected to the output shaft 1 of the reciprocating mechanism is provided in the cup body, the reciprocating mechanism includes the output shaft 1 and a gear sleeved on the outside of the output shaft 1, the gear can drive the output shaft 1 to rotate and reciprocate along its axial direction, the reciprocating mechanism also includes a shell 3 provided with a mounting cavity, the gear and the output shaft 1 are arranged in the mounting cavity, the shell 3 is provided with a avoidance portion for the bottom end of the output shaft 1 to reciprocate, and a closed structure is provided between the avoidance portion and the output shaft 1 to isolate the mounting cavity from the outside of the shell 3.

[0035] The present application sets up a reciprocating motion mechanism to drive the output shaft 1 to rotate and reciprocate along its axial direction at the same time, so that the stirring element driven by the output shaft 1 can achieve a larger range of stirring in the axial direction, effectively avoiding the situation where the stirring element cannot cut the food due to the food being far away from the stirring element in the axial direction, resulting in insufficient food processing, which helps to improve the processing effect and efficiency of the food and enhance the user experience.

[0036] At the same time, the housing 3 is provided with a relief portion for the bottom end of the output shaft 1 to reciprocate, so that the output shaft 1 can achieve axial reciprocating motion with the relief of the relief portion, avoiding the situation where the housing 3 and the output shaft 1 interfere with each other and the output shaft 1 cannot move axially, thereby ensuring the stability of the movement of the output shaft 1. At the same time, a closed structure is provided between the relief portion and the output shaft 1 to isolate the installation cavity from the outside of the housing 3, so that the relief portion can avoid the output shaft 1 while isolating the installation cavity from the outside of the housing 3 through the closed structure, effectively avoiding external dust, carbon powder and other stolen goods from entering the installation cavity, causing large transmission noise or even jamming of the gears and the output shaft 1, ensuring the transmission stability of the gears and the output shaft 1, and improving the stability of the operation of the whole machine. At the same time, after the installation cavity is isolated from the outside of the shell 3, the grease used to lubricate the gears and the output shaft 1 can be effectively stored in the installation cavity, ensuring the lubricating effect of the grease on each component, allowing each component to work in a stable lubrication environment, further improving the transmission stability of each component, and preventing the grease from being thrown out of the installation cavity, resulting in the inability to lubricate gears and other components, causing severe wear and tear, which helps to ensure transmission stability and improve the service life of each component.

[0037] It should be noted that the present application does not specifically limit the avoidance portion and the closed structure, which may be any one of the following embodiments:

[0038] Example 1: Figure 1 , Figure 2 As shown, in this embodiment, the position where the housing 3 and the output shaft 1 are aligned is arranged away from the output shaft 1 along the axial direction of the output shaft 1. Specifically, the position where the housing 3 and the output shaft 1 are aligned is a position where the axial projection of the output shaft 1 falls on the housing 3. An escape cavity 23 for reciprocating motion of the output shaft 1 is formed in the housing 3. The escape portion includes a cavity wall forming the escape cavity 23, and the bottom wall of the escape cavity 23 is sealed to isolate the escape cavity 23 from the outside of the housing 3. The closed structure includes the escape cavity 23.

[0039] By setting the housing 3 and the output shaft 1 at a position away from the output shaft 1 along the axial direction of the output shaft 1, a cavity 23 for reciprocating motion of the output shaft 1 is formed in the housing 3, so that the output shaft 1 can achieve reciprocating motion with the help of the cavity 23, and at the same time, the bottom wall of the cavity 23 is sealed, effectively isolating the installation cavity from the outside of the housing 3, preventing external dust, carbon powder and other stolen goods from entering the installation cavity, causing large transmission noise or even jamming of the gears and the output shaft 1, ensuring the transmission stability of the gears and the output shaft 1, and improving the stability of the whole machine operation. At the same time, the cavity 23 can store excess grease for lubricating the gear assembly 2, effectively preventing the grease from precipitating outward and causing the lubrication effect of the gear assembly 2 and other 11 transmission parts to deteriorate, ensuring the lubrication effect of each transmission part 11.

[0040] As a preferred implementation of the present application, Figure 1 , Figure 2 As shown, the motor 4 is arranged on the outer side of the reciprocating motion mechanism. The motor 4 includes a motor body 42 and an output rod 41 extending into the outer shell 3. The output rod 41 includes an exposed portion exposed below the outer shell 3 and above the motor body 42. The exposed portion at least partially overlaps with the air avoidance cavity 23 in the horizontal direction.

[0041] By arranging the motor 4 on the outer side of the reciprocating motion mechanism, compared with the method of arranging the motor 4 below or above the reciprocating motion structure to realize transmission, the axial size of the whole machine is greatly compressed. At the same time, the exposed part and the avoidance cavity 23 at least partially overlap in the horizontal direction, so that the motor 4 and the reciprocating motion structure can overlap in the horizontal direction, thereby further shortening the space occupied by the motor 4 and the reciprocating motion structure in the vertical direction, improving the compactness of the whole machine structure, and avoiding the situation where the center of gravity of the whole machine moves upward due to the excessive vertical height, resulting in a decrease in the stability of the whole machine.

[0042] It should be noted that the present application does not specifically limit the relative relationship between the width of the output rod 41 and the avoidance cavity 23 in the horizontal direction and the vertical height of the motor body 42. As a preferred embodiment of the present application, Figure 1 , Figure 2 As shown, the width L1 of the exposed portion overlapping with the air avoidance cavity 23 in the lateral direction and the vertical height L2 of the motor body 42 satisfy: 1 / 6L2≤L1≤1 / 3L2. Preferably, the width L1 of the output rod 41 overlapping with the air avoidance cavity 23 in the lateral direction satisfies: 10≤L1≤50mm. More preferably, L1 can be selected as 20mm, 30mm or 40mm, etc.

[0043] By setting the width L1 of the horizontal overlap between the exposed portion and the avoidance cavity 23 and the vertical height L2 of the motor body 42 to satisfy: 1 / 6L2≤L1≤1 / 3L2, it is avoided that the width of the horizontal overlap between the exposed portion and the avoidance cavity 23 is too small relative to the vertical height of the motor body 42, resulting in a large space occupied by the motor 4 in the axial direction and the size of the whole machine is too large; at the same time, it is avoided that the width of the horizontal overlap between the exposed portion and the avoidance cavity 23 is too large relative to the vertical height of the motor body 42, resulting in the motor 4 requiring a smaller overall size, resulting in its power being too small and unable to generate a large torque to process food.

[0044] Furthermore, if Figure 1 , Figure 2 As shown, the motor body 42 and the air-avoiding cavity 23 at least partially overlap in the transverse direction.

[0045] By arranging the motor body 42 and the air avoidance cavity 23 to at least partially overlap in the horizontal direction, the motor 4 as a whole is further moved upward relative to the reciprocating motion mechanism, thereby further shortening the space occupied by the motor 4 and the reciprocating motion structure in the vertical direction, thereby improving the compactness of the entire structure.

[0046] Example 2: Figure 3 As shown, in this embodiment, the avoidance portion includes a avoidance opening 24 formed on the housing 3 and arranged in alignment with the output shaft 1. Specifically, the alignment between the housing 3 and the output shaft 1 is a position where the axial projection of the output shaft 1 falls on the housing 3. The output shaft 1 passes through the avoidance opening 24 to achieve axial reciprocating motion, and the closed structure includes a seal 6 arranged between the output shaft 1 and the avoidance opening 24.

[0047] By setting the avoidance portion to include a avoidance opening 24 formed on the housing 3 and arranged in alignment with the output shaft 1, the output shaft 1 can achieve axial reciprocating motion by passing through the avoidance opening 24, and at the same time, the molding structure of the avoidance portion can be relatively simple, which is convenient for the production of the housing 3, and helps to reduce production costs and improve production efficiency. In addition, the closed structure includes a seal 6 arranged between the output shaft 1 and the avoidance opening 24, so that the installation cavity and the outside of the housing 3 are isolated by the seal 6, so that external dust, carbon powder and other stolen goods are prevented from entering the installation cavity, causing the gears and the output shaft 1 to have large transmission noise or even jamming, ensuring the transmission stability of the gears and the output shaft 1, and improving the stability of the whole machine operation. At the same time, it can store the excess grease for lubricating the gear assembly 2, effectively preventing the grease from precipitating outward and causing the lubrication effect of the gear assembly 2 and other transmission parts 11 to deteriorate, and ensuring the lubrication effect of each transmission part 11.

[0048] Furthermore, if Figure 3 As shown, the avoidance opening 24 is further provided with an annular rib 241 extending upward and surrounding the outer side of the output shaft 1 .

[0049] By providing the avoidance opening 24 with an annular rib 241 extending upward and surrounding the outside of the output shaft 1, on the one hand, the contact area between the avoidance opening 24 and the output shaft 1 is further increased by the annular rib 241, thereby further improving the sealing effect of the seal 6 on the output shaft 1 and the avoidance opening 24, and further preventing external carbon powder and the like from entering the installation cavity; on the other hand, the annular rib 241 can improve the radial limiting effect of the output shaft 1, and prevent the output shaft 1 from swinging too much during the axial movement, causing it to be unable to rotate normally, thereby further ensuring the stability of the whole machine operation.

[0050] As a preferred embodiment of this embodiment, Figure 3 As shown, the seal 6 includes a sealing section 61 clamped between the output shaft 1 and the avoidance opening 24, and a first fixed section 62 and a second fixed section 63 respectively connected to the top and bottom ends of the sealing section 61 and extending outward, the first fixed section 62 abuts against the top wall of the avoidance opening 24, and the second fixed section 63 abuts against the bottom wall of the avoidance opening 24.

[0051] By configuring the seal 6 to include a sealing section 61 clamped between the output shaft 1 and the avoidance opening 24, and a first fixed section 62 and a second fixed section 63 respectively connected to the top and bottom ends of the sealing section 61 and extending outward, that is, the seal 6 is in an I-shape as a whole, and the first fixed section 62 abuts against the top wall of the avoidance opening 24, and the second fixed section 63 abuts against the bottom wall of the avoidance opening 24, so that the seal 6 can achieve sealing abutment with the output shaft 1 through the sealing section 61, and at the same time, the seal 6 is axially fixed by the first fixed section 62 and the second fixed section 63, ensuring that the seal 6 can be fixed at the avoidance opening 24 during the axial movement of the output shaft 1, thereby improving the stability of the connection between the seal 6 and the avoidance opening 24, avoiding the situation where the seal 6 moves with the output shaft 1 and causing its sealing failure, and further improving the sealing effect of the seal 6.

[0052] As a preferred implementation of the present application, Figure 2 As shown, the housing 3 includes an upper shell 31 and a lower shell 32. The lower shell 32 is provided with a step for supporting the gear assembly 2. The step includes a first step 321 provided below the gear assembly 2 and a second step 322 provided below the first step 321 and used for installing the bearing.

[0053] By providing a step on the lower shell 32 to support the gear assembly 2, the gear assembly 2 is supported, the stability and reliability of its position are ensured, and the gear assembly 2 is prevented from colliding and rubbing against each other due to large deflection when subjected to force, thereby improving the stability of rotation.

[0054] Furthermore, if Figure 2As shown, the step surface of the second step 322 is provided with an annular rib 3221 extending upward, and the gear assembly 2 includes a main body 221 abutting against the top of the first step 321 and a transmission rib 222 extending downward and surrounding the outside of the output shaft 1, and the transmission rib 222 and the annular rib 3221 at least partially overlap in the horizontal direction.

[0055] By providing an upwardly extending annular rib 3221 on the step surface of the second step 322, the gear assembly 2 and the avoidance portion can be isolated by the contact between the annular rib 3221 and the bearing, thereby achieving a second seal. Even if a small amount of carbon powder enters the installation cavity, the annular rib 3221 can block the carbon powder, further preventing the carbon powder from entering the gear assembly 2 and causing serious wear. At the same time, by providing a transmission rib 222 surrounding the outer side of the output shaft 1 on the gear assembly 2, and the transmission rib 222 and the annular rib 3221 at least partially overlap in the horizontal direction, the transmission rib 222 and the annular rib 3221 form a further block for carbon powder, and when the carbon powder enters the installation cavity, the transmission rib 222 blocks the carbon powder for the first time, and then the annular rib 3221 blocks the carbon powder for the second time, further enhancing the blocking effect on the carbon powder, and further preventing the carbon powder from entering the gear assembly 2.

[0056] It should be noted that the present application does not specifically limit the structure of the gear assembly 2. As a preferred embodiment of the present application, Figure 1 As shown, the gear assembly 2 includes a first gear 21 and a second gear 22, which are respectively matched with the output shaft 1 for transmission. The second gear 22 also has an accommodating cavity for the output shaft 1 to pass through. The part of the output shaft 1 located in the accommodating cavity includes a transmission part 11. A spiral guide rail extending in the circumferential direction and connected end to end is provided on the outer surface of the transmission part 11. The spiral guide rail is inclined. A protrusion that cooperates with the spiral guide rail is provided on the side wall of the accommodating cavity. The first gear 21 and the second gear 22 have a speed difference. When the first gear 21 drives the output shaft 1 to rotate, the second gear 22 rotates and drives the protrusion to move along the spiral guide rail, so that the output shaft 1 reciprocates along its axial direction.

[0057] 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 processor with stable operation, comprising a main machine with a built-in motor and a detachable cup body connected to the main machine, wherein a reciprocating mechanism drivingly connected to the motor is provided in the main machine, and a stirring member drivingly connected to the output shaft of the reciprocating mechanism is provided in the cup body, characterized in that: The reciprocating motion mechanism includes the output shaft and a gear assembly mounted on the outside of the output shaft, the gear assembly can drive the output shaft to rotate and reciprocate along its axial direction at the same time, the reciprocating motion mechanism also includes a shell provided with a mounting cavity, the gear assembly and the output shaft are arranged in the mounting cavity, the bottom of the shell is provided with an avoidance portion for the bottom end of the output shaft to reciprocate, and a closed structure is also provided between the avoidance portion and the output shaft to isolate the mounting cavity from the outside of the shell.

2. A food processing machine with stable operation according to claim 1, characterized in that: The housing and the output shaft are positioned away from the output shaft along the axial direction of the output shaft to form an escape cavity in the housing for the output shaft to reciprocate. The escape portion includes a cavity wall forming the escape cavity, and the bottom wall of the escape cavity is sealed to isolate the escape cavity from the outside of the housing. The enclosed structure includes the escape cavity.

3. A food processing machine with stable operation according to claim 2, characterized in that: The motor is arranged on the outer side of the reciprocating motion mechanism, and includes a motor body and an output rod extending into the shell. The output rod includes an exposed portion exposed below the shell and above the motor body, and the exposed portion at least partially overlaps with the air-avoiding cavity in the horizontal direction.

4. A food processing machine with stable operation according to claim 3, characterized in that: A height L1 of the exposed portion and the air-avoiding cavity in a lateral direction and a vertical height L2 of the motor body satisfy the following: 1 / 6L2≤L1≤1 / 3L2.

5. A food processing machine with stable operation according to claim 3, characterized in that: The motor body and the air-avoiding cavity at least partially overlap in a transverse direction.

6. A food processing machine with stable operation according to claim 1, characterized in that: The escape portion includes an escape opening formed on the housing and arranged in alignment with the output shaft, the output shaft passes through the escape opening to achieve axial reciprocating motion, and the sealed structure includes a sealing member arranged between the output shaft and the escape opening.

7. A food processing machine with stable operation according to claim 6, characterized in that: The escape opening is also provided with an annular rib extending upward and surrounding the outer side of the output shaft.

8. A food processing machine with stable operation according to claim 6, characterized in that: The seal includes a sealing section clamped between the output shaft and the avoidance port, and a first fixed section and a second fixed section respectively connected to the top and bottom ends of the sealing section and extending outward, the first fixed section abuts against the top wall of the avoidance port, and the second fixed section abuts against the bottom wall of the avoidance port.

9. A food processing machine with stable operation according to claim 1, characterized in that: The housing includes an upper shell and a lower shell, the lower shell is provided with a step for supporting the gear assembly, the step includes a first step provided below the gear assembly and a second step provided below the first step and used for mounting a bearing.

10. A food processing machine with stable operation according to claim 9, characterized in that: The step surface of the second step is provided with an annular rib extending upward, and the gear assembly includes a main body abutting against the first step and a transmission rib extending downward and surrounding the outer side of the output shaft, and the transmission rib and the annular rib at least partially overlap in the transverse direction.

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