Food processor capable of reciprocating

Abstract

The utility model discloses a food processor capable of reciprocating motion, which relates to the field of life electric appliances and comprises a main machine, a driving mechanism, a reciprocating motion mechanism in transmission connection with the driving mechanism and an output shaft, and the reciprocating motion mechanism comprises a first gear and a second gear which are sleeved on the outer side of the output shaft. The first gear and the second gear are in transmission fit with the output shaft, the driving mechanism comprises a motor, a motor shaft arranged on the motor and a driving gear arranged at the output end of the motor shaft, the driving gear is in transmission connection with the first gear and the second gear through an intermediate gear, and the upper portion of the intermediate gear is in meshing transmission with the first gear and the second gear; the lower portion of the intermediate gear is in meshing transmission with the driving gear, the radius of the first gear and the radius of the second gear are reduced, then the occupied space of the first gear and the second gear is reduced, the compactness of the structure in the main machine is improved, meanwhile, the meshing precision of the first gear, the second gear and the intermediate gear can be improved, and noise generated in the transmission process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a food processing machine capable of reciprocating motion. 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, meat grinders 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 processing machines, such as meat grinders, include a cup body with a grinding chamber, a grinding device disposed in the grinding chamber, and a motor located below the cup body and driving the grinding device to rotate. When using the food processing machine, the user places the food into the grinding chamber, and the grinding device rotates at high speed driven by the motor to process the food. However, existing food processing machines, especially meat grinders, generally have poor grinding performance when cutting food, especially when grinding 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 grinding process, and the grinding device is fixed in a horizontal position for rotation and cutting, and cannot grind the vegetable leaves that adhere to the wall, resulting in insufficient processing of the food. In order to solve the above problems, for example, Chinese utility model CN201720870853.X discloses an automatically lifting and rotating cutting stirring blade, which is provided with a set of reciprocating motion mechanisms in the main engine. Through the motion conversion of the reciprocating motion mechanism, the crushing device can reciprocate and circulate up and down. Although this scheme enables the crushing device to move up and down to achieve a larger range of cutting in the axial direction, in the transmission process, a driving wheel is provided on the motor, and gears A and gears B that mesh with the driving wheel are provided on the outside of the center rod. In order to achieve a larger reduction ratio, the diameters of gears A and gears B need to be set larger, which leads to a greatly reduced meshing accuracy of gears A and gears B with the driving wheel, thereby generating greater noise during the transmission process. At the same time, gears A and gears B will occupy a larger main engine space, causing the entire main engine to be too large. Utility Model Content

[0004] The utility model aims to provide a food processor capable of reciprocating motion, so as to solve the problem that the meshing accuracy between gears in the reciprocating mechanism provided in the existing food processor for realizing the reciprocating motion of the pulverizing device is low, resulting in large transmission noise.

[0005] To achieve the above-mentioned purpose, the utility model provides a food processing machine capable of reciprocating motion, comprising a main machine, a processing cup, a stirring member arranged in the processing cup, a driving mechanism arranged in the main machine, a reciprocating motion mechanism transmission-connected to the driving mechanism, and an output shaft transmission-connected to the stirring member, the reciprocating motion mechanism comprising a first gear and a second gear sleeved on the outer side of the output shaft, the first gear and the second gear respectively transmission-matched with the output shaft, the driving mechanism comprising a motor, a motor shaft arranged on the motor, and a driving gear arranged at the output end of the motor shaft, the driving gear is transmission-connected to the first gear and the second gear through an intermediate gear, and the upper part of the intermediate gear meshes with the first gear and the second gear for transmission, and the lower part of the intermediate gear meshes with the driving gear for transmission.

[0006] The present application sets a driving mechanism and a reciprocating motion mechanism, so that when the user uses the food processor to process food, the driving mechanism drives the output shaft to rotate circumferentially, and the reciprocating motion mechanism drives the output shaft to reciprocate axially, thereby greatly increasing the axial cutting space of the mixing knife in the cup body, so that the mixing knife can cut more food, which helps to improve the uniformity and efficiency of cutting, and at the same time can increase the amount of food cut in a single time, meeting the user's usage needs.

[0007] At the same time, the driving gear is connected to the first gear and the second gear through the intermediate gear transmission, and the upper part of the intermediate gear is meshed with the first gear and the second gear for transmission, and the lower part of the intermediate gear is meshed with the driving gear for transmission, so that the first gear and the second gear can be rotated through the intermediate gear. Compared with the traditional method of directly meshing with the driving gear, the appropriate output speed is achieved through two-stage reduction, that is, the intermediate gear meshing with the first gear and the second gear is a gear after reduction, which is more conducive to gear displacement to compensate for the center distance of the first gear and the second gear relative to the intermediate gear, thereby improving the meshing accuracy of the first gear, the second gear and the intermediate gear, reducing the noise generated during the transmission process, achieving the effect of noise reduction, and improving the user experience. At the same time, the radius of the first gear and the second gear can be reduced, thereby reducing the occupied space of the first gear and the second gear, improving the compactness of the structure inside the host, and reducing the occupied space of the entire host.

[0008] In a preferred implementation of a reciprocating food processor, the central axis of the output shaft and the central axis of the intermediate gear are located in a first plane, the central axis of the intermediate gear and the central axis of the motor shaft are located in a second plane, and the first plane intersects the second plane.

[0009] By setting the first plane and the second plane to intersect, the motor can be offset relative to the first gear and the second gear, thereby reducing the space occupied by the drive mechanism and the reciprocating motion mechanism in the lateral direction, avoiding the situation where the first plane and the second plane are in the same plane, resulting in a larger space occupied by the drive mechanism and the reciprocating motion mechanism and causing the entire main engine structure to be larger, which helps to further reduce the space occupied by the main engine.

[0010] In a preferred implementation of a reciprocating food processor, an angle A between the first plane and the second plane satisfies: 90°≤A≤150°.

[0011] By setting the angle A between the first plane and the second plane to satisfy: 90°≤A≤150°, it is avoided that the angle between the first plane and the second plane is too small, resulting in the motor and the bottom end of the reciprocating motion mechanism being too close, which may cause the two to vibrate and collide and generate noise; at the same time, it is avoided that the angle between the first plane and the second plane is too large, resulting in the drive mechanism and the reciprocating motion mechanism occupying a large space in the lateral direction.

[0012] In a preferred implementation of a reciprocating food processor, the driving mechanism further comprises a housing covering the outer side of the intermediate gear, and an axial positioning structure is provided between the housing and the upper and lower ends of the intermediate gear.

[0013] By providing an axial positioning structure between the outer casing and the upper and lower ends of the intermediate gear, the intermediate gear can always remain in its original position under the positioning action of the axial positioning structure, thereby avoiding the intermediate gear from swinging or even displacing during transmission, causing large transmission noise or even transmission failure, and further improving the noise reduction effect and transmission stability.

[0014] In a preferred implementation of a reciprocating food processor, a first positioning protrusion and a second positioning protrusion are respectively provided at both axial ends of the intermediate gear, the outer shell includes an upper shell and a lower shell, the upper shell and the lower shell are respectively provided with a first positioning groove and a second positioning groove that cooperate with the first positioning protrusion and the second positioning protrusion, and the axial positioning structure includes a first positioning protrusion, a second positioning protrusion, a first positioning groove and a second positioning groove.

[0015] By setting the axial positioning structure to include a first positioning protrusion, a second positioning protrusion, a first positioning groove and a second positioning groove, the first protrusion is inserted into the first groove to limit the upper end of the intermediate gear, and the second protrusion is inserted into the second groove to limit the lower end of the intermediate gear, thereby further improving the limiting effect on the intermediate gear. At the same time, the molding of the protrusion and the groove is relatively simple, which can reduce the molding cost of the axial positioning structure and help reduce the production cost of the entire machine.

[0016] In a preferred implementation of a reciprocating food processor, the intermediate gear includes a gear body and a positioning column, the positioning column is arranged in the gear body along the axial rotation of the gear body, and both ends of the positioning column protrude from the gear body to form a first positioning protrusion and a second positioning protrusion.

[0017] By setting the intermediate gear to include a gear body and a positioning column, the positioning column is arranged in the gear body along the axial rotation of the gear body, and the two ends of the positioning column protrude from the gear body to form a first positioning protrusion and a second positioning protrusion, so that the intermediate gear is limited by the cooperation of the positioning column with the first positioning groove and the second positioning groove. Compared with the method of directly setting the protrusion on the intermediate gear, the noise generated by the rotation of the protrusion in the groove can be avoided, which helps to further improve the noise reduction effect.

[0018] In a preferred implementation of a reciprocating food processor, the driving mechanism also includes a shell covering the outside of the intermediate gear, the shell includes an upper shell and a lower shell, the bottom wall of the lower shell is provided with a partition surrounding one side of the intermediate gear, and a noise reduction chamber is formed between the partition and the side wall of the lower shell.

[0019] By providing a partition surrounding one side of the intermediate gear on the bottom wall of the lower shell, a noise reduction cavity is formed between the partition and the side wall of the lower shell, so that the noise generated during the transmission process of the intermediate gear and the first gear and the second gear can be reduced in the noise reduction cavity, avoiding the situation where the noise generated during the transmission process is directly transmitted to the outside world and causes loud noise, thereby further improving the noise reduction effect.

[0020] In a preferred implementation of a reciprocating food processor, the intermediate gear is a double-toothed gear, the upper teeth of the double-toothed gear are meshed with the first gear and the second gear, and the lower teeth of the double-toothed gear are meshed with the driving gear.

[0021] By setting the intermediate gear as a double-toothed gear, and the upper teeth of the double-toothed gear meshing with the first gear and the second gear, and the lower teeth of the double-toothed gear meshing with the driving gear, when the driving gear drives the lower teeth to rotate, the upper teeth rotate synchronously with the lower teeth and transmit the torque to the first gear and the second gear, so as to realize the rotation of the first gear and the second gear. The torque transmission process is simple and reliable, and at the same time, the noise generated in the transmission process can be reduced, and the compactness of the structure is improved.

[0022] In a preferred implementation of a reciprocating food processor, the first gear and the second gear have the same center distance as the upper gear, and the first gear and the second gear are negative displacement gears, and the upper gear is positive displacement gear; or,

[0023] The number of teeth on the lower teeth section is greater than the number of teeth on the upper teeth section.

[0024] By making the center distances of the first gear and the second gear the same as the center distances of the upper teeth, the first gear and the second gear are ensured to be located on the same rotation axis, and the radial space occupied by the first gear and the second gear is ensured to be consistent, so that the housing that covers the first gear and the second gear can be cylindrical in the axial direction, which is convenient for the production and processing of the housing, helps to reduce the production cost of the housing, and improves production efficiency. In addition, the first gear and the second gear are negative displacement gears, and the upper teeth are positive displacement gears, so that the bending strengths of the first gear, the second gear and the upper teeth tend to be equal, which improves the bearing capacity of the gears, so that the upper teeth can transmit greater torque, which helps to further improve the crushing effect.

[0025] By setting the number of teeth on the lower teeth to be greater than that on the upper teeth, the reduction ratio of the gear set is increased, so that the driving gear is meshed with the lower teeth and decelerated through the upper teeth, so that the output shaft can output greater torque, further improving the crushing effect.

[0026] In a preferred implementation of a reciprocating food processor, the first gear is provided with an upper extension portion extending upward, a first bearing is sleeved on the outer side of the upper extension portion, the housing is provided with a first accommodating cavity for accommodating the first bearing, and a side wall of the first accommodating cavity is provided with a first supporting rib abutting against the first bearing; or,

[0027] The second gear is provided with a lower extension portion extending downward, the outer side of the lower extension portion is sleeved with a first bearing, the outer shell is provided with a second accommodating cavity for accommodating the second bearing, and the side wall of the second accommodating cavity is provided with a second supporting rib abutting against the second bearing.

[0028] By arranging support ribs in the accommodating cavity that abut against the bearing, the bearing can be quickly installed with the help of the support ribs during installation, which helps to improve the installation efficiency of the bearing. At the same time, it can improve the limiting effect of the accommodating cavity on the bearing, avoid displacement of the bearing during rotation, and improve the stability of the bearing position. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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:

[0030] Figure 1 A cross-sectional view of a food processor in one embodiment of the utility model;

[0031] Figure 2 It is a cross-sectional view of a driving mechanism and a reciprocating motion mechanism in one embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of the matching of the gears in one embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the structure of the upper shell in one embodiment of the utility model;

[0034] Figure 5 It is a structural schematic diagram of the lower shell in one embodiment of the utility model.

[0035] List of parts and reference numerals:

[0036] 1-main engine; 2-driving mechanism, 21-motor, 22-motor shaft, 23-driving gear; 3-reciprocating mechanism, 31-first gear, 32-second gear; 4-output shaft; 5-housing, 51-upper shell, 511-first positioning groove, 512-first accommodating chamber, 513-first supporting rib, 52-lower shell, 521-second positioning groove, 522-second accommodating chamber, 523-second supporting rib, 524-partition, 525-noise reduction chamber; 6-intermediate gear, 61-upper section tooth, 62-lower section tooth, 63-first positioning protrusion, 64-second positioning protrusion; 7-first bearing; 8-second bearing; 9-first plane; 10-second plane. 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 5 As shown, the utility model provides a reciprocating food processing machine, comprising a main machine 1, a processing cup, a stirring piece arranged in the processing cup, a driving mechanism 2 arranged in the main machine 1, a reciprocating mechanism 3 connected to the driving mechanism 2 in transmission, and an output shaft 4 used for connecting to the stirring piece in transmission, the reciprocating mechanism 3 comprises a first gear 31 and a second gear 32 sleeved on the outer side of the output shaft 4, the first gear 31 and the second gear 32 are respectively matched with the output shaft 4 in transmission, the driving mechanism 2 comprises a motor 21, a motor shaft 22 arranged on the motor 21 and a driving gear 23 arranged at the output end of the motor shaft 22, the driving gear 23 is connected to the first gear 31 and the second gear 32 in transmission through an intermediate gear 6, and the upper part of the intermediate gear 6 is meshed with the first gear 31 and the second gear 32 for transmission, and the lower part of the intermediate gear 6 is meshed with the driving gear 23 for transmission.

[0040] The present application sets a driving mechanism 2 and a reciprocating motion mechanism 3 so that when the user uses the food processor to process food, the driving mechanism 2 drives the output shaft 4 to rotate circumferentially, and the reciprocating motion mechanism 3 drives the output shaft 4 to reciprocate axially, thereby greatly increasing the axial cutting space of the mixing knife in the cup body, so that the mixing knife can cut more food, which helps to improve the uniformity and efficiency of cutting, and at the same time can increase the amount of food cut at a single time to meet the user's usage needs.

[0041] At the same time, the driving gear 23 is connected with the first gear 31 and the second gear 32 through the intermediate gear 6, and the upper part of the intermediate gear 6 is meshed with the first gear 31 and the second gear 32 for transmission, and the lower part of the intermediate gear 6 is meshed with the driving gear 23 for transmission, so that the first gear 31 and the second gear 32 can be rotated through the intermediate gear 6. Compared with the traditional method of directly meshing with the driving gear 23, the appropriate output speed is achieved through two-stage reduction, that is, the intermediate gear 6 meshed with the first gear 31 and the second gear 32 is a gear after reduction, which is more conducive to gear displacement to compensate for the center distance of the first gear 31 and the second gear 32 relative to the intermediate gear 6, thereby improving the meshing accuracy of the first gear 31, the second gear 32 and the intermediate gear 6, reducing the noise generated during the transmission process, achieving the effect of noise reduction, and improving the user experience. At the same time, the radius of the first gear 31 and the second gear 32 can be reduced, thereby reducing the occupied space of the first gear 31 and the second gear 32, improving the compactness of the structure inside the host, and reducing the occupied space of the entire host.

[0042] It should be noted that the present application does not make any specific limitation on the relative relationship between the intermediate gear 6 and the motor shaft 22. The intermediate gear 6 may be integrally formed at the output end of the motor shaft 22, or the intermediate gear 6 and the motor shaft 22 may be separately formed and a transmission groove may be provided in the intermediate gear 6, and the output end of the motor shaft 22 may extend into the transmission groove to realize transmission.

[0043] As a preferred embodiment of the present application, Figure 3 As shown, the central axis of the output shaft 4 and the central axis of the intermediate gear 6 are located in a first plane 9 , the central axis of the intermediate gear 6 and the central axis of the motor shaft 22 are located in a second plane 10 , and the first plane 9 and the second plane 10 intersect.

[0044] By setting the first plane 9 and the second plane 10 to intersect, the motor 21 can be offset relative to the first gear 31 and the second gear 32, thereby reducing the space occupied by the drive mechanism 2 and the reciprocating motion mechanism 3 in the lateral direction, avoiding the situation where the first plane 9 and the second plane 10 are in the same plane, resulting in a larger space occupied by the drive mechanism 2 and the reciprocating motion mechanism 3 and a larger structure of the entire main machine 1, which helps to further reduce the space occupied by the main machine 1.

[0045] It should be noted that the present application does not specifically limit the angle formed between the first plane 9 and the second plane 10. As a preferred embodiment of the present application, the angle A between the first plane 9 and the second plane 10 satisfies: 90°≤A≤150°.

[0046] By setting the angle A between the first plane 9 and the second plane 10 to satisfy: 90°≤A≤150°, it is avoided that the angle between the first plane 9 and the second plane 10 is too small, which may cause the motor 21 and the bottom end of the reciprocating motion mechanism 3 to be close to each other, which may cause vibration and collision between the two and generate noise; at the same time, it is avoided that the angle between the first plane 9 and the second plane 10 is too large, which may cause the drive mechanism 2 and the reciprocating motion mechanism 3 to occupy a large space in the lateral direction.

[0047] As a preferred embodiment of the present application, Figure 2 As shown, the driving mechanism 2 further includes a housing 5 which is covered on the outside of the intermediate gear 6 , and an axial positioning structure is provided between the housing 5 and the upper and lower ends of the intermediate gear 6 .

[0048] By providing an axial positioning structure between the housing 5 and the upper and lower ends of the intermediate gear 6, the intermediate gear 6 is always kept in its original position under the positioning action of the axial positioning structure, thereby avoiding the intermediate gear 6 from swinging or even displacing during the transmission process, causing large transmission noise or even transmission failure, and further improving the noise reduction effect and transmission stability.

[0049] It should be noted that the present application does not specifically limit the axial positioning structure. As a preferred implementation of the present application, Figure 3 , Figure 4 , Figure 5 As shown, the intermediate gear 6 is provided with a first positioning protrusion 63 and a second positioning protrusion 64 at both axial ends, the outer shell 5 includes an upper shell 51 and a lower shell 52, the upper shell 51 and the lower shell 52 are respectively provided with a first positioning groove 511 and a second positioning groove 521 that cooperate with the first positioning protrusion 63 and the second positioning protrusion 64, and the axial positioning structure includes the first positioning protrusion 63, the second positioning protrusion 64, the first positioning groove 511 and the second positioning groove 521.

[0050] By setting the axial positioning structure to include a first positioning protrusion 63, a second positioning protrusion 64, a first positioning groove 511 and a second positioning groove 521, the first protrusion is inserted into the first groove to limit the upper end of the intermediate gear 6, and the second protrusion is inserted into the second groove to limit the lower end of the intermediate gear 6, thereby further improving the limiting effect on the intermediate gear 6. At the same time, the molding of the protrusion and the groove is relatively simple, which can reduce the molding cost of the axial positioning structure and help reduce the production cost of the entire machine.

[0051] Furthermore, if Figure 2 , Figure 3 As shown, the intermediate gear 6 includes a gear body and a positioning column. The positioning column is rotatably disposed in the gear body along the axial direction of the gear body, and two ends of the positioning column protrude from the gear body to form a first positioning protrusion 63 and a second positioning protrusion 64.

[0052] By configuring the intermediate gear 6 to include a gear body and a positioning column, the positioning column is arranged in the gear body along the axial rotation of the gear body, and the two ends of the positioning column protrude from the gear body to form a first positioning protrusion 63 and a second positioning protrusion 64, so that the intermediate gear 6 is limited by the cooperation between the positioning column and the first positioning groove 511 and the second positioning groove 521. Compared with the method of directly setting the protrusion on the intermediate gear 6, the noise generated by the rotation of the protrusion in the groove can be avoided, which helps to further improve the noise reduction effect.

[0053] Of course, the axial positioning structure in the present application is not limited to the above-mentioned setting, and it can also be provided with two protrusions that are oppositely arranged and extend inward on the housing 5, and grooves that cooperate with the two protrusions are provided at the upper and lower ends of the intermediate gear 6, so as to realize the axial positioning of the intermediate gear 6. At the same time, the present application does not specifically limit the relative relationship between the gear body and the positioning column, and it can also be that the positioning column and the gear body are integrally formed, which will not be repeated here.

[0054] As a preferred embodiment of the present application, Figure 2 , Figure 5 As shown, the driving mechanism 2 also includes a shell 5 covering the outside of the intermediate gear 6, the shell 5 includes an upper shell 51 and a lower shell 52, the bottom wall of the lower shell 52 is provided with a partition 524 surrounding one side of the intermediate gear 6, and a noise reduction chamber 525 is formed between the partition 524 and the side wall of the lower shell 52.

[0055] By providing a partition 524 surrounding one side of the intermediate gear 6 on the bottom wall of the lower shell 52, a noise reduction chamber 525 is formed between the partition 524 and the side wall of the lower shell 52, so that the noise generated during the transmission of the intermediate gear 6 and the first gear 31 and the second gear 32 can be reduced in the noise reduction chamber 525, thereby avoiding the situation where the noise generated during the transmission process is directly transmitted to the outside world and causes a large noise, and further improving the noise reduction effect.

[0056] As a preferred embodiment of the present application, Figure 3 As shown, the intermediate gear 6 is a duplex gear, the upper teeth 61 of the duplex gear are meshed with the first gear 31 and the second gear 32 , and the lower teeth 62 of the duplex gear are meshed with the driving gear 23 .

[0057] By setting the intermediate gear 6 as a double-toothed gear, and the upper teeth 61 of the double-toothed gear meshing with the first gear 31 and the second gear 32, and the lower teeth 62 of the double-toothed gear meshing with the driving gear 23, when the driving gear 23 drives the lower teeth 62 to rotate, the upper teeth 61 rotate synchronously with the lower teeth 62 and transmit the torque to the first gear 31 and the second gear 32, so as to realize the rotation of the first gear 31 and the second gear 32. The torque transmission process is simple and reliable, and at the same time, the noise generated during the transmission process can be reduced, and the compactness of the structure is improved.

[0058] Furthermore, the center distances of the first gear 31 and the second gear 32 and the upper gear 61 are the same, and the first gear 31 and the second gear 32 are negative displacement gears, and the upper gear 61 is a positive displacement gear.

[0059] By making the center distances of the first gear 31 and the second gear 32 the same as the upper teeth 61, it is ensured that the first gear 31 and the second gear 32 are located on the same rotation axis, and at the same time, the radial occupied space of the first gear 31 and the second gear 32 can be consistent, so that the housing 5 covering the first gear 31 and the second gear 32 can be cylindrical in the axial direction, which is convenient for the production and processing of the housing 5, helps to reduce the production cost of the housing 5 and improves production efficiency. In addition, the first gear 31 and the second gear 32 are negative displacement gears, and the upper teeth 61 are positive displacement gears, so that the bending strengths of the first gear 31, the second gear 32 and the upper teeth 61 tend to be equal, and the bearing capacity of the gears is improved, so that the upper teeth 61 can transmit greater torque, which helps to further improve the crushing effect.

[0060] It can be understood that the displacement mode of the first gear 31, the second gear 32 and the intermediate gear 6 in the present application is not limited to the above-mentioned settings, wherein the number of teeth of the first gear 31 is Z1 and the module is m1; the number of teeth of the second gear 32 is Z2 and the module is m2, and the center distance between the first gear 31 and the intermediate gear 6 and between the second gear 32 and the intermediate gear 6 is L, as long as (m3×Z3+m2×Z2) / 2≤L≤(m4×Z4+m2×Z2) / 2, specifically, as shown in the following table:

[0061] Intermediate gear First Gear Second gear Positive transposition Negative displacement Negative displacement Positive transposition Positive transposition Positive transposition Positive transposition Positive transposition Negative displacement

[0062] When both the first gear 31 and the second gear 32 are negatively displaced, the displacement amplitude of the first gear 31 is greater than the displacement amplitude of the second gear 32; when both the first gear 31 and the second gear 32 are positively displaced, the displacement amplitude of the first gear 31 is less than the displacement amplitude of the second gear 32. Preferably, Z1 and Z2 satisfy: Z1-Z2≤15.

[0063] As a preference in this embodiment, the number of teeth of the lower teeth 62 is greater than the number of teeth of the upper teeth 61 .

[0064] By setting the number of teeth of the lower teeth 62 to be greater than the number of teeth of the upper teeth 61, the reduction ratio of the gear set is increased, so that the driving gear 23 is meshed with the lower teeth 62 and decelerated through the upper teeth 61, so that the output shaft 4 can output a greater torque, further improving the crushing effect.

[0065] Of course, the intermediate gear 6 is not limited to the above-mentioned setting, it can also be straight teeth that are consistent from top to bottom, or it can be a triple tooth, and the upper teeth 61 of the triple tooth are meshed with the first gear 31, the middle teeth of the triple tooth are meshed with the second gear 32, and the lower teeth 62 of the triple tooth are meshed with the driving gear 23.

[0066] As a preferred embodiment of the present application, Figure 2 As shown, the first gear 31 is provided with an upper extension portion extending upward, the outer side of the upper extension portion is sleeved with a first bearing 7, the housing 5 is provided with a first accommodating cavity 512 for accommodating the first bearing 7, and the side wall of the first accommodating cavity 512 is provided with a first supporting rib 513 abutting against the first bearing 7; or,

[0067] The second gear 32 is provided with a lower extension portion extending downward, and the first bearing 7 is sleeved on the outer side of the lower extension portion. The housing 5 is provided with a second accommodating cavity 522 for accommodating the second bearing 8, and the side wall of the second accommodating cavity 522 is provided with a second supporting rib 523 abutting against the second bearing 8.

[0068] By arranging support ribs in the accommodating cavity that abut against the bearing, the bearing can be quickly installed with the help of the support ribs during installation, which helps to improve the installation efficiency of the bearing. At the same time, it can improve the limiting effect of the accommodating cavity on the bearing, avoid displacement of the bearing during rotation, and improve the stability of the bearing position.

[0069] 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 reciprocating food processing machine, comprising a main machine, a processing cup, a stirring element arranged in the processing cup, a driving mechanism arranged in the main machine, a reciprocating mechanism drivingly connected to the driving mechanism, and an output shaft drivingly connected to the stirring element, characterized in that: The reciprocating mechanism includes a first gear and a second gear sleeved on the outside of the output shaft, the first gear and the second gear are respectively matched with the output shaft for transmission, the driving mechanism includes a motor, a motor shaft provided on the motor, and a driving gear provided on the output end of the motor shaft, the driving gear is connected to the first gear and the second gear through an intermediate gear, and the upper part of the intermediate gear is meshed with the first gear and the second gear for transmission, and the lower part of the intermediate gear is meshed with the driving gear for transmission.

2. A reciprocating food processor according to claim 1, characterized in that: The central axis of the output shaft and the central axis of the intermediate gear are located in a first plane, the central axis of the intermediate gear and the central axis of the motor shaft are located in a second plane, and the first plane intersects with the second plane.

3. A reciprocating food processor according to claim 2, characterized in that: An angle A between the first plane and the second plane satisfies: 90°≤A≤150°.

4. A reciprocating food processor according to claim 1, characterized in that: The driving mechanism further comprises a housing covering the outer side of the intermediate gear, and an axial positioning structure is arranged between the housing and the upper and lower ends of the intermediate gear.

5. A reciprocating food processor according to claim 4, characterized in that: The intermediate gear is respectively provided with a first positioning protrusion and a second positioning protrusion at both axial ends, the outer shell includes an upper shell and a lower shell, the upper shell and the lower shell are respectively provided with a first positioning groove and a second positioning groove that cooperate with the first positioning protrusion and the second positioning protrusion, and the axial positioning structure includes the first positioning protrusion, the second positioning protrusion, the first positioning groove and the second positioning groove.

6. A reciprocating food processor according to claim 5, characterized in that: The intermediate gear includes a gear body and a positioning column. The positioning column is rotatably disposed in the gear body along the axial direction of the gear body, and two ends of the positioning column protrude from the gear body to form the first positioning protrusion and the second positioning protrusion.

7. A reciprocating food processor according to claim 1, characterized in that: The driving mechanism also includes a shell covering the outside of the intermediate gear, the shell includes an upper shell and a lower shell, the bottom wall of the lower shell is provided with a partition surrounding one side of the intermediate gear, and a noise reduction chamber is formed between the partition and the side wall of the lower shell.

8. A reciprocating food processor according to claim 1, characterized in that: The intermediate gear is a duplex gear, the upper teeth of the duplex gear are meshed with the first gear and the second gear, and the lower teeth of the duplex gear are meshed with the driving gear.

9. A reciprocating food processor according to claim 8, characterized in that: The first gear and the second gear have the same center distance as the upper gear, and the first gear and the second gear are negative displacement gears, and the upper gear is positive displacement gear; or, The number of teeth of the lower teeth section is greater than the number of teeth of the upper teeth section.

10. A reciprocating food processor according to claim 1, characterized in that: The main machine further comprises a housing covering the outer side of the reciprocating mechanism, the first gear is provided with an upper extension portion extending upward, a first bearing is sleeved on the outer side of the upper extension portion, the housing is provided with a first accommodating cavity for accommodating the first bearing, and a side wall of the first accommodating cavity is provided with a first supporting rib abutting against the first bearing; or, The second gear is provided with a lower extension portion extending downward, a second bearing is sleeved on the outer side of the lower extension portion, the housing is provided with a second accommodating cavity for accommodating the second bearing, and a side wall of the second accommodating cavity is provided with a second supporting rib abutting against the second bearing; or The number of teeth of the first gear is Z1, and the number of teeth of the second gear is Z2, wherein Z1 and Z2 satisfy: Z2-Z1≤15.

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