Food processor capable of rotating stably

Abstract

The utility model discloses a food processor capable of rotating stably, which relates to the field of life electric appliances, and comprises a cup body with a built-in stirring knife and a main machine detachably arranged on the cup body, a motor is arranged in the main machine, the stirring knife comprises a blade and a knife shaft, the knife shaft comprises a knife shaft body for fixing the blade, and the knife shaft body is provided with a hollow cavity. The stirring cutter further comprises an embedding piece installed at the opening of the hollow cavity, a mounting groove is formed in the inner bottom face of the cup body, the bottom end of the cutter shaft body and the embedding piece are matched with the mounting groove in an inserted mode, and the radial size of the embedding piece is smaller than or equal to the radial size of the portion, inserted into the mounting groove, of the cutter shaft body, so that the mounting groove limits the cutter shaft body in the radial direction. The upper limit of radial stress of the whole stirring cutter can be greatly improved by means of limiting of the cutter shaft body, the embedded part and the mounting groove, and the situation that the stirring cutter cannot achieve radial limiting and food materials are interrupted due to the fact that the stirring cutter is subjected to large radial force during food material processing, especially dough kneading, and consequently the limiting shaft is broken is avoided. And the food material processing stability is ensured.

Description

Technical Field

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

[0002] Existing food processors, such as meat grinders and dough mixers, typically include a cup with a built-in mixing blade and a removable main unit located above the cup. The main unit houses a motor that is connected to the mixing blade. When using the food processor, the user places ingredients in the cup, and the mixing blade rotates at high speed under the drive of the motor to process the ingredients. The mixing blade needs to be positioned when fixed in the cup to ensure normal rotation. Existing methods for positioning the mixing blade, such as those described in Chinese patents CN200720056746.X and CN201520247250.5, employ a top end of the mixing blade shaft that engages with an upper connector connected to the motor to achieve top positioning. A downwardly extending limiting post is provided at the bottom end of the blade shaft, and a limiting groove is provided on the bottom wall of the cup body that engages with the limiting post to limit the bottom end of the mixing blade. Thus, the positioning of the entire mixing blade is achieved through the limiting of the top and bottom ends. However, during actual use, the limiting cooperation between the limiting shaft and the limiting groove is not very stable, and the mixing knife is prone to deflection during rotation, especially when processing ingredients that require large torque, such as kneading dough. The entire mixing knife needs to withstand a large radial force from the dough, and the radial force on the mixing knife will be transmitted to the limiting shaft at the bottom. The limiting shaft is too thin relative to the blade shaft of the mixing knife, and the limiting shaft is prone to breakage when subjected to a large radial force, causing it to lose its radial limiting effect on the mixing knife, thereby causing the mixing knife to be unable to continue processing ingredients, seriously affecting the consumer experience. Utility Model Content

[0003] The purpose of the utility model is to provide a food processor with stable rotation, so as to further optimize the structure of the solution in which the limiting shaft at the bottom end of the mixing blade and the limiting groove at the bottom of the cup body are provided to cooperate therewith, so as to solve the problem that the limiting shaft and the limiting groove are unstable in cooperation, especially when the mixing blade outputs a large torque and is subjected to a large radial force, the limiting shaft is easy to break.

[0004] To achieve the above-mentioned purpose, the utility model provides a food processor with stable rotation, comprising a cup body with a built-in stirring knife and a detachable main unit arranged above the cup body, a motor connected to the stirring knife for transmission is provided in the main unit, the stirring knife comprises a blade and a knife shaft, the knife shaft comprises a knife shaft body for fixing the blade, the knife shaft body is provided with a hollow cavity with a hollow interior and an open bottom end, the stirring knife also includes a fitting installed at the opening of the hollow cavity, a mounting groove is provided on the bottom surface of the cup body, the bottom end of the knife shaft body and the fitting are plugged into the mounting groove, and the radial dimension of the fitting is less than or equal to the radial dimension of the knife shaft body inserted into the mounting groove, so that the mounting groove radially limits the knife shaft body.

[0005] The present application provides the blade shaft body with a hollow cavity that is hollow inside and open at the bottom, which facilitates the demolding of the blade shaft body, helps to reduce the overall weight of the blade shaft body, makes it easier to rotate, and at the same time can reduce the weight of the entire machine, making it easier for users to take and place the entire machine, and can reduce the amount of blade shaft body demolding, thereby reducing production costs, and can make the side wall thickness of the blade shaft body uniformly formed to ensure the stability of the mixing blade during rotation, avoiding the situation where the entire blade shaft body is solid, resulting in a slow cooling speed after injection molding, thereby reducing production efficiency. At the same time, the mixing blade also includes a chimeric part installed at the opening of the hollow cavity. The chimeric part can be used alone or in conjunction with other parts to achieve the sealing of the hollow cavity, ensuring the sealing of the hollow cavity, and preventing food slurry from entering the hollow cavity during food processing, resulting in residual food inside and causing odor or even mold inside. In addition, a mounting groove is provided on the bottom surface of the cup body, and the bottom end of the blade shaft body and the fitting are plugged into the mounting groove, so that after the user installs the mixing blade in place, the mounting groove can radially limit the bottom end of the blade shaft body, thereby indirectly straightening the fitting to ensure the stability of the mixing blade position and avoid radial movement of the mixing blade during rotation, which may cause unstable rotation.

[0006] At the same time, the radial dimension of the insert is less than or equal to the radial dimension of the blade shaft body inserted into the mounting groove, so that after the insert and the bottom of the blade shaft body are inserted into the mounting groove, only the bottom of the blade shaft body or the bottom of the blade shaft body and the insert cooperate with the side wall of the mounting groove. Compared with the existing method in which only the limiting column of the cup body cooperates radially with the limiting groove of the blade shaft, the limiting mechanism of the blade shaft body, the insert and the mounting groove can greatly increase the upper limit of the radial force of the entire mixing blade, thereby preventing the mixing blade from being subjected to large radial forces when processing food, especially when kneading dough, resulting in the limiting shaft breaking and the mixing blade being unable to achieve radial limiting, thereby causing food interruption, thereby ensuring the stability of food processing. At the same time, it avoids the radial dimension of the insert being too large relative to the blade shaft body, thereby preventing the insert from being limited by the side wall of the mounting groove, resulting in the insert and the mounting groove being squeezed when the blade shaft body is subjected to large radial forces, causing the insert and the mounting groove to be relatively displaced or even separated, thereby ensuring the stability of the connection between the insert and the blade shaft body, thereby ensuring the sealing effect on the hollow cavity. In addition, the larger radial matching size between the blade shaft body and the installation slot makes it easier for users to clean the installation slot, avoiding the situation where the installation slot is difficult to clean, which causes the residual food inside to easily produce odor or even mold, thereby improving the user experience.

[0007] In a preferred implementation of a rotationally stable food processor, the insert is completely sunken and installed at the opening of the hollow cavity, and the outer bottom surface of the insert is higher than the bottom surface of the blade shaft body or is flush with the bottom surface of the blade shaft body.

[0008] By setting the insert to be completely sunken and installed in the opening of the hollow cavity, the insert is completely isolated from the inner wall of the installation groove through the blade shaft body. On the one hand, the contact area between the insert and the hollow cavity can be increased, thereby further improving the stability of the connection between the insert and the blade shaft body; on the other hand, the side wall of the insert can be isolated from the side wall of the installation groove, further avoiding the situation where the insert contacts the side wall of the installation groove and is displaced by force. At the same time, the outer bottom surface of the insert is higher than the bottom surface of the blade shaft body or is flush with the bottom surface of the blade shaft body, so that the bottom surface of the blade shaft body and the bottom surface of the installation groove support and limit, so that the outer bottom surface of the insert is isolated from the bottom wall of the installation groove, thereby achieving all-round isolation between the insert and the installation groove, further avoiding the situation where the insert is displaced by force.

[0009] In a preferred implementation of a rotationally stable food processor, the outer bottom surface of the engaging member is provided with an arc surface that bulges toward the top of the blade shaft.

[0010] By providing the outer bottom surface of the insert with an arc surface that bulges toward the top of the blade shaft, the outer bottom surface of the insert can be further away from the bottom wall of the installation groove, thereby further avoiding the situation where the bottom wall of the installation groove exerts an upward force on the bottom wall of the insert, causing the insert to be displaced, and further ensuring the stability of the position of the insert.

[0011] In a preferred implementation of a rotationally stable food processor, the fitting includes a first shaft segment inserted into the opening of the hollow cavity, and a second shaft segment located below the first shaft segment and radially expanded, the second shaft segment and the lower end of the knife shaft body being plugged into the mounting groove.

[0012] By setting the fitting to include a first shaft segment inserted into the opening of the hollow cavity, and a second shaft segment located below the first shaft segment and radially expanded, the second shaft segment and the lower end of the knife shaft body are plugged into the mounting groove, so that the fitting can be plugged into the hollow cavity through the first shaft segment, and at the same time, the hollow cavity can be sealed to ensure the closedness of the hollow cavity, and the second shaft segment abuts against the bottom wall of the knife shaft body. After the knife shaft body and the second shaft segment are inserted into the mounting groove, the second shaft segment is subjected to an upward force and abuts against the bottom end of the knife shaft body, which can prevent the fitting from moving upward and ensure the reliability of the position of the fitting.

[0013] In a preferred implementation of a food processor with stable rotation, the mixing blade also includes a magnetic part, the cup body is provided with a mating part that magnetically cooperates with the magnetic part, the second shaft section includes a step portion with the step surface facing upward, and the magnetic part is clamped between the step surface and the bottom surface of the blade shaft body.

[0014] By including a magnetic element in the blending blade and providing a matching element on the cup body that magnetically cooperates with the magnetic element, the blade shaft body is not only limited in position by the mounting slot, but also further limited by the magnetic cooperation between the magnetic element and the matching element, further ensuring the stability of the blending blade's position. Furthermore, the second shaft section includes a stepped portion with an upwardly facing step surface, and the magnetic element is clamped between the stepped surface and the bottom surface of the blade shaft body. This eliminates the need for separate structural components to install the magnetic element, helps simplify the blending blade's structure, and reduces production costs. Furthermore, the magnetic element can be simultaneously installed and secured when the blade shaft body and the fitting are assembled, helping to improve assembly efficiency and shorten assembly time.

[0015] In a preferred implementation of a food processor with stable rotation, the stirring blade further includes a magnetic member installed in the hollow cavity or the fitting, and the cup body is provided with a matching member that magnetically cooperates with the magnetic member.

[0016] By including a magnetic part installed in the hollow cavity or the fitting, the cup body is provided with a mating part that magnetically cooperates with the magnetic part, so that the blade shaft body can not only be limited by the installation groove, but also further limited by the magnetic cooperation between the magnetic part and the mating part, which can further ensure the stability of the mixing blade position.

[0017] In a preferred implementation of a rotationally stable food processor, the magnetic element is mounted on an insert, and the insert is provided with a fixing groove for fixing the magnetic element; or,

[0018] The magnetic part is installed on the embedded part, which includes a base plate and a positioning ring extending upward from the base plate and fixedly connected to the bottom end of the knife shaft body. The inner wall of the positioning ring is provided with multiple vertically extending limiting ribs, and the limiting ribs are interference fit with the magnetic part.

[0019] By providing a fixing groove for fixing the magnetic part on the fitting, the magnetic part is limited and fixed, ensuring the stability of the magnetic part in the fitting, thereby avoiding the displacement of the magnetic part when rotating with the blade shaft, causing it to collide with the fitting and generate noise. At the same time, it avoids the situation where the blade shaft body undergoes radial deviation due to the movement of the magnetic part, causing unstable rotation of the mixing blade, which helps to improve the stability of the mixing blade rotation.

[0020] By configuring the interlocking part to include a base plate and a positioning ring extending upward from the base plate and fixedly connected to the bottom end of the blade shaft body, the isolating part can isolate the magnetic part from the bottom wall of the installation slot through the base plate, and at the same time isolate the magnetic part from the side wall of the installation slot through the positioning ring, thereby achieving all-round isolation between the magnetic part and the installation slot, effectively avoiding the situation where the magnetic part and the installation slot are rubbed against each other, causing serious wear of the magnetic part. At the same time, the inner wall of the positioning ring is provided with a plurality of vertically extending limiting ribs, which are interference-fitted with the magnetic part, thereby improving the limiting effect on the magnetic part and ensuring the stability of the connection between the magnetic part and the interlocking part. At the same time, compared with the interference fit between the inner wall of the positioning ring and the magnetic part, it can make it easier for the assembler to press the magnetic part down into place, ensuring the limiting of the magnetic part while facilitating assembly.

[0021] In a preferred implementation of a rotationally stable food processor, the inner diameter L1 of the mounting groove and the inner diameter L2 of the bottom wall of the cup body satisfy the following relationship: 1 / 6≤L1 / L2≤1 / 4; or,

[0022] The vertical height L3 of the knife shaft body when inserted into the installation groove and the vertical height L4 of the knife shaft body satisfy: 1 / 12≤L3 / L4≤1 / 9.

[0023] By setting the inner diameter L1 of the mounting groove and the inner diameter L2 of the bottom wall of the cup body to satisfy: 1 / 6≤L1 / L2≤1 / 4, it is avoided that the inner diameter of the mounting groove is too small relative to the inner diameter of the bottom wall of the cup body, which makes the mounting groove difficult to clean after the food slurry enters; at the same time, it is avoided that the inner diameter of the mounting groove is too large relative to the inner diameter of the bottom wall of the cup body, which causes the contact area between the stirring blade and the bottom surface of the mounting groove to be too large, resulting in excessive friction between the two, and thus causing the stirring blade to rotate unsmoothly.

[0024] By setting the vertical height L3 of the blade shaft body inserted into the installation groove and the vertical height L4 of the blade shaft body to satisfy: 1 / 12≤L3 / L4≤1 / 9, it is avoided that the vertical height of the blade shaft body inserted into the installation groove is too small relative to the vertical height of the blade shaft body, resulting in poor radial limiting effect of the installation groove on the blade shaft body, causing the blade shaft to easily tilt; at the same time, it is avoided that the vertical height of the blade shaft body inserted into the installation groove is too large relative to the vertical height of the blade shaft body, resulting in the installation groove being too deep, making it difficult to clean after food slurry enters the installation groove.

[0025] In a preferred implementation of a rotationally stable food processor, the cup body is provided with a matching piece, the stirring blade is provided with a magnetic piece that magnetically cooperates with the matching piece, and the outer bottom surface of the cup body is provided with a vertically extending receiving groove, and the matching piece is inserted into the receiving groove.

[0026] By providing a vertically extending receiving groove on the outer bottom surface of the cup body and inserting the matching piece into the receiving groove, the matching piece can be limited and fixed. At the same time, the matching piece can be installed and fixed by simple plug-in, which makes the assembly simple and reliable and helps to improve the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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 of the present invention. In the drawings:

[0028] Figure 1 This is a cross-sectional view of a food processing machine in one embodiment of the present invention;

[0029] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0030] Figure 3 This is a cross-sectional view of a food processing machine in another embodiment of the present invention;

[0031] Figure 4 for Figure 3 Enlarged view of middle part B;

[0032] Figure 5 This is an exploded view of the cup body and other components in another embodiment of the present invention.

[0033] List of parts and reference numerals:

[0034] 1-main unit; 2-motor; 3-cup body, 31-mounting slot, 32-rib, 33-accommodating slot, 34-mounting part; 4-mixing blade, 41-blade shaft body, 411-hollow cavity, 42-blade; 5-fitting part, 51-positioning ring, 511-limiting rib, 52-bottom plate, 53-first shaft section, 54-second shaft section, 541-step part, 5411-step surface, 55-arc surface; 6-magnetic part; 7-matching part, 71-horizontal plate, 72-plug-in ring. DETAILED DESCRIPTION

[0035] 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.

[0036] It should be noted that many specific details are set forth 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 scope of protection of the present invention is not limited to the specific implementation methods disclosed below.

[0037] like Figures 1 to 5As shown, the utility model provides a food processor with stable rotation, comprising a cup body 3 with a built-in stirring knife 4 and a detachable main unit 1 arranged above the cup body 3, wherein the main unit 1 is provided with a motor 2 that is transmission-connected to the stirring knife 4, the stirring knife 4 comprises a blade 42 and a knife shaft, the knife shaft comprises a knife shaft body 41 that fixes the blade 42, the knife shaft body 41 is provided with a hollow cavity 411 which is hollow inside and open at the bottom end, the stirring knife 4 also comprises a fitting 5 installed at the opening of the hollow cavity 411, the inner bottom surface of the cup body 3 is provided with a mounting groove 31, the bottom end of the knife shaft body 41 and the fitting 5 are plugged into the mounting groove 31, and the radial dimension of the fitting 5 is less than or equal to the radial dimension of the knife shaft body 41 inserted into the mounting groove 31, so that the mounting groove 31 radially limits the knife shaft body 41.

[0038] The present application provides the blade shaft body 41 with a hollow cavity 411 that is hollow inside and open at the bottom, which facilitates the demolding of the blade shaft body 41, helps to reduce the overall weight of the blade shaft body 41, makes it easier to rotate, and at the same time can reduce the weight of the entire machine, making it easier for users to take and place the entire machine, and can reduce the amount of blade shaft body 41 demolding, thereby reducing production costs, and can make the side wall thickness of the blade shaft body 41 uniformly formed to ensure the stability of the mixing blade 4 during rotation, avoiding the situation where the entire blade shaft body 41 is solid, resulting in a slow cooling rate after injection molding, thereby reducing production efficiency. At the same time, the mixing blade 4 also includes a chimeric part 5 installed at the opening of the hollow cavity 411. The chimeric part 5 can be used alone or in conjunction with other parts to seal the hollow cavity 411, ensuring the sealing of the hollow cavity 411, and preventing food slurry from entering the hollow cavity 411 during food processing, resulting in residual food inside and causing odor or even mold inside. In addition, a mounting groove 31 is provided on the inner bottom surface of the cup body 3, and the bottom end of the blade shaft body 41 and the fitting 5 are plugged into the mounting groove 31, so that after the user installs the mixing blade 4 in place, the mounting groove 31 can radially limit the bottom end of the blade shaft body 41, thereby indirectly straightening the fitting 5, ensuring the stability of the position of the mixing blade 4, and avoiding radial movement of the mixing blade 4 during rotation, which may cause unstable rotation.

[0039] At the same time, the radial dimension of the insert 5 is smaller than or equal to the radial dimension of the blade shaft body 41 inserted into the mounting groove 31. Therefore, after the insert 5 and the bottom of the blade shaft body 41 are inserted into the mounting groove 31, only the bottom of the blade shaft body 41 or the bottom of the blade shaft body 41 and the insert 5 jointly engage with the side wall of the mounting groove 31. This effectively prevents the radial dimension of the insert 5 from being too large relative to the blade shaft body 41, which would limit the insert 5 and the side wall of the mounting groove 31. This would cause the insert 5 to be squeezed against the mounting groove 31 when the blade shaft body 41 is subjected to a large radial force, resulting in relative displacement or even separation between the insert 5 and the blade shaft body 41. This ensures the stability of the connection between the insert 5 and the blade shaft body 41, thereby ensuring the sealing effect on the hollow cavity 411. In addition, the large radial dimension of the blade shaft body 41 and the mounting groove 31 facilitates the user's cleaning of the mounting groove 31, avoiding the difficulty in cleaning the mounting groove 31, which would easily cause residual food inside to produce odor or even mold, thereby improving the user experience.

[0040] It should be noted that the present application does not specifically limit the structure of the interlocking member 5, which may be any one of the following embodiments:

[0041] Example 1: Figure 1 、 Figure 2 As shown, in this embodiment, the insert 5 is completely sunk and installed at the opening of the hollow cavity 411, and the outer bottom surface of the insert 5 is higher than the bottom surface of the blade shaft body 41 or is flush with the bottom surface of the blade shaft body 41. More preferably, the outer bottom surface of the insert 5 is higher than the bottom surface of the blade shaft body 41.

[0042] By setting the insert 5 to be completely sunken and installed in the opening of the hollow cavity 411, the insert 5 is completely isolated from the inner wall of the mounting groove 31 by the blade shaft body 41. On the one hand, the contact area between the insert 5 and the hollow cavity 411 can be increased, thereby further improving the stability of the connection between the insert 5 and the blade shaft body 41. On the other hand, the side wall of the insert 5 can be isolated from the side wall of the mounting groove 31, further preventing the insert 5 from contacting the side wall of the mounting groove 31 and causing the insert 5 to be displaced by force. At the same time, the outer bottom surface of the insert 5 is higher than the bottom surface of the blade shaft body 41 or is flush with the bottom surface of the blade shaft body 41, so that the bottom surface of the blade shaft body 41 is supported and limited by the bottom surface of the mounting groove 31, so that the outer bottom surface of the insert 5 is isolated from the bottom wall of the mounting groove 31, thereby achieving all-round isolation between the insert 5 and the mounting groove 31, further preventing the insert 5 from being displaced by force.

[0043] Furthermore, if Figure 2 As shown, the outer bottom surface of the insert 5 is provided with an arc surface 55 that bulges toward the top of the blade shaft.

[0044] By providing the outer bottom surface of the insert 5 with an arc surface 55 that is raised toward the top of the blade shaft, the outer bottom surface of the insert 5 can be further away from the bottom wall of the installation groove 31, thereby further avoiding the situation where the bottom wall of the installation groove 31 applies an upward force to the bottom wall of the insert 5, causing the insert 5 to be displaced, and further ensuring the stability of the position of the insert 5.

[0045] Example 2: Figure 3 、 Figure 4 As shown, in this embodiment, the fitting 5 includes a first shaft segment 53 inserted into the opening of the hollow cavity 411, and a second shaft segment 54 located below the first shaft segment 53 and radially expanded. The second shaft segment 54 and the lower end of the knife shaft body 41 are plugged into the mounting groove 31.

[0046] By setting the fitting 5 to include a first shaft segment 53 inserted into the opening of the hollow cavity 411, and a second shaft segment 54 located below the first shaft segment 53 and radially expanded, the second shaft segment 54 and the lower end of the knife shaft body 41 are plugged into the mounting groove 31, so that the fitting 5 can be plugged into the hollow cavity 411 through the first shaft segment 53, and at the same time, the hollow cavity 411 can be sealed to ensure the closedness of the hollow cavity 411, and the second shaft segment 54 abuts against the bottom wall of the knife shaft body 41. After the knife shaft body 41 and the second shaft segment 54 are plugged into the mounting groove 31, the second shaft segment 54 is subjected to an upward force and abuts against the bottom end of the knife shaft body 41, which can prevent the fitting 5 from moving upward and ensure the reliability of the position of the fitting 5.

[0047] It should be noted that the present application does not make any specific restrictions on the radial dimensions of the second shaft segment 54 and the radial dimensions of the blade shaft body 41 inserted into the mounting groove 31 in this embodiment. Figure 3 、 Figure 4 As shown, the radial dimension of the second shaft segment 54 is the same as the radial dimension of the blade shaft body 41, so that the blade shaft body 41 and the insert 5 jointly bear the radial force exerted on the mixing blade 4, achieving torque dispersion and helping to improve the pressure bearing capacity. Of course, the radial dimension of the second shaft segment 54 can also be smaller than the radial dimension of the blade shaft body 41, which will not be repeated here.

[0048] Furthermore, if Figure 3 、 Figure 4 As shown, the stirring blade 4 also includes a magnetic part 6, the cup body 3 is provided with a matching part 7 that magnetically cooperates with the magnetic part 6, the second shaft section 54 includes a step portion 541 with the step surface 5411 facing upward, and the magnetic part 6 is clamped between the step surface 5411 and the bottom surface of the blade shaft body 41.

[0049] By including a magnetic element 6 in the mixing blade 4 and providing a matching element 7 that magnetically cooperates with the magnetic element 6 in the cup body 3, the blade shaft body 41 is not only limited in position by the mounting slot 31, but also further limited by the magnetic cooperation between the magnetic element 6 and the matching element 7, thereby further ensuring the stability of the position of the mixing blade 4. Furthermore, the second shaft section 54 includes a stepped portion 541 with an upwardly facing stepped surface 5411. The magnetic element 6 is clamped between the stepped surface 5411 and the bottom surface of the blade shaft body 41, eliminating the need for separate structural components to install the magnetic element 6. This helps to simplify the structure of the mixing blade 4 and reduce production costs. At the same time as the blade shaft body 41 and the fitting 5 are assembled and installed, the magnetic element 6 can also be installed and fixed simultaneously, helping to improve assembly efficiency and shorten assembly time.

[0050] It should be noted that the present application does not make any specific restrictions on the radial dimensions of the magnetic member 6 and the radial dimensions of the blade shaft body 41 inserted into the mounting groove 31 in this embodiment. Figure 3 、 Figure 4 As shown, the radial dimension of the magnetic component 6 is the same as the radial dimension of the blade shaft body 41, or the radial dimension of the magnetic component 6 can be smaller than the radial dimension of the blade shaft body 41, thereby avoiding contact between the magnetic component 6 and the side wall of the installation groove 31, and then avoiding friction and wear between the two, achieving isolation between the two, and effectively avoiding friction between the magnetic component 6 and the installation groove 31, which causes serious wear of the magnetic component 6.

[0051] Example 3: In this embodiment, the outer wall of the blade shaft body 41 is provided with a flange extending outward, and the flange overlaps the slot of the installation groove 31. The insert 5 can be completely embedded and installed in the hollow cavity 411, or partially installed in the hollow cavity 411, partially exposed, or the insert 5 can be embedded and installed in the hollow cavity 411 and the bottom wall is flush with the bottom wall of the blade shaft body 41. More preferably, when the insert 5 is installed in place, the bottom wall of the insert 5 and the bottom wall of the installation groove 31 are gap-matched, thereby isolating the insert 5 from the bottom wall of the installation groove 31, avoiding contact between the insert 5 and the bottom wall of the installation groove 31, resulting in greater wear between the two, and making it unreliable or even detached for the insert 5 to seal the hollow cavity 411, further improving the position reliability of the insert 5.

[0052] As a preferred embodiment of the present application, Figure 2 As shown, the stirring blade 4 further includes a magnetic component 6 installed in the hollow cavity 411 or the fitting 5 , and the cup body 3 is provided with a matching component 7 that magnetically matches the magnetic component 6 .

[0053] By making the mixing blade 4 also include a magnetic part 6 installed in the hollow cavity 411 or the insert 5, the cup body 3 is provided with a matching part 7 that magnetically cooperates with the magnetic part 6, so that the blade shaft body 41 can not only be limited by the installation groove 31, but also further achieve a limiting effect through the magnetic cooperation between the magnetic part 6 and the matching part 7, which can further ensure the stability of the position of the mixing blade 4.

[0054] It should be noted that the present application does not specifically limit the installation position of the magnetic element 6, which can be any one of the following embodiments:

[0055] Implementation 1: Figure 2 As shown, in this embodiment, the magnetic element 6 is installed on the embedding element 5.

[0056] It should be further noted that the present application does not specifically limit how the engaging member 5 implements the installation of the magnetic member 6 in this embodiment, and it may be any one of the following embodiments:

[0057] Embodiment 1: The fitting part 5 is provided with a fixing groove for fixing the magnetic part 6 .

[0058] By providing a fixing groove for fixing the magnetic part 6 on the insert 5, the magnetic part 6 is limited and fixed, ensuring the stability of the magnetic part 6 in the insert 5, thereby avoiding the displacement of the magnetic part 6 when rotating with the blade shaft, causing it to collide with the insert 5 and generate noise. At the same time, it avoids the movement of the magnetic part 6 causing the blade shaft body 41 to have radial deviation and cause the mixing blade 4 to rotate unstably, which helps to improve the stability of the rotation of the mixing blade 4.

[0059] Implementation method 2: Figure 2 As shown, in this embodiment, the fitting 5 includes a base plate 52 and a positioning ring 51 extending upward from the base plate 52 and fixedly connected to the bottom end of the knife shaft body 41. The inner wall of the positioning ring 51 is provided with a plurality of vertically extending limiting ribs 511, and the limiting ribs 511 are interference fit with the magnetic suction part 6.

[0060] By configuring the interlocking member 5 to include a base plate 52 and a positioning ring 51 extending upward from the base plate 52 and fixedly connected to the bottom end of the blade shaft body 41, the isolating member isolates the magnetic member 6 from the bottom wall of the mounting groove 31 through the base plate 52, and at the same time isolates the magnetic member 6 from the side walls of the mounting groove 31 through the positioning ring 51, thereby achieving all-round isolation of the magnetic member 6 from the mounting groove 31, effectively preventing the magnetic member 6 from rubbing against the mounting groove 31 and causing severe wear of the magnetic member 6. At the same time, the inner wall of the positioning ring 51 is provided with a plurality of vertically extending limiting ribs 511, which are interference-fitted with the magnetic member 6, thereby enhancing the limiting effect on the magnetic member 6 and ensuring the stability of the connection between the magnetic member 6 and the interlocking member 5. At the same time, compared with the interference fit of the inner wall of the positioning ring 51 and the magnetic member 6, the assembler can more easily press the magnetic member 6 downward into place, ensuring the limiting of the magnetic member 6 while facilitating assembly.

[0061] Embodiment 2: In this embodiment, the magnetic member 6 is installed in the hollow cavity 411 , and the fitting member 5 is covered at the opening of the hollow cavity 411 .

[0062] The need to provide structural components on the engaging member 5 to fix the magnetic member 6 is eliminated, and the structure is further simplified, which helps to improve the compactness of the stirring blade 4 structure and reduce production costs.

[0063] It should be noted that the present application does not specifically limit the relative relationship between the inner diameter of the mounting groove 31 and the inner diameter of the bottom wall of the cup body 3. As a preferred embodiment of the present application, Figure 1 As shown, the inner diameter L1 of the mounting groove 31 and the inner diameter L2 of the bottom wall of the cup body 3 satisfy the following relationship: 1 / 6≤L1 / L2≤1 / 4. More preferably, L1 / L2=1 / 5. Specifically, L1 can be 23mm, 24mm, 25mm, or 26mm, and L2 can be 140mm, 170mm, or 180mm, etc.

[0064] By setting the inner diameter L1 of the mounting groove 31 and the inner diameter L2 of the bottom wall of the cup body 3 to satisfy: 1 / 6≤L1 / L2≤1 / 4, it is avoided that the inner diameter of the mounting groove 31 is too small relative to the inner diameter of the bottom wall of the cup body 3, which makes the mounting groove 31 difficult to clean after the food slurry enters; at the same time, it is avoided that the inner diameter of the mounting groove 31 is too large relative to the inner diameter of the bottom wall of the cup body 3, which leads to excessive contact area between the stirring blade 4 and the bottom surface of the mounting groove 31, resulting in excessive friction between the two, and thus causing the stirring blade 4 to rotate unsmoothly.

[0065] At the same time, it should be noted that the present application does not specifically limit the relative relationship between the vertical height of the cutter shaft body 41 inserted into the mounting groove 31 and the vertical height of the cutter shaft body 41. As a preferred embodiment of the present application, Figure 1As shown, the vertical height L3 of the arbor body 41 inserted into the mounting slot 31 and the vertical height L4 of the arbor body 41 satisfy the following relationship: 1 / 12≤L3 / L4≤1 / 9. More preferably, L3 / L4=1 / 10. Specifically, L3 can be 6mm, 7mm, 8mm, 9mm, 10mm, etc., and L4 can be 60mm, 80mm, 100mm, 120mm, etc.

[0066] By setting the vertical height L3 of the blade shaft body 41 inserted into the installation groove 31 and the vertical height L4 of the blade shaft body 41 to satisfy: 1 / 12≤L3 / L4≤1 / 9, it is avoided that the vertical height of the blade shaft body 41 inserted into the installation groove 31 is too small relative to the vertical height of the blade shaft body 41, resulting in poor radial limiting effect of the installation groove 31 on the blade shaft body 41, causing the blade shaft to easily tilt; at the same time, it is avoided that the vertical height of the blade shaft body 41 inserted into the installation groove 31 is too large relative to the vertical height of the blade shaft body 41, resulting in the installation groove 31 being too deep, causing food slurry to enter the installation groove 31 and be difficult to clean.

[0067] As a preferred embodiment of the present application, Figure 2 As shown, the cup body 3 is provided with a matching piece 7, the stirring blade 4 is provided with a magnetic member 6 that is magnetically matched with the matching piece 7, and the outer bottom surface of the cup body 3 is provided with a vertically extending receiving groove 33, and the matching piece 7 is inserted into the receiving groove 33. It should be noted that this application does not specifically limit the structure of the magnetic member 6 under this embodiment. Figure 2 As shown, the magnetic member 6 and the insert 5 are two independent components. The magnetic member 6 is installed on the insert 5, and the insert 5 is plugged into the side wall of the hollow cavity 411. Of course, the magnetic member 6 can also be inserted into the hollow cavity 411 with interference fit, and the insert 5 is sealed at the lower end opening of the hollow cavity 411. It is understandable that the magnetic member 6 and the insert 5 can also be the same component, especially when the bottom surface of the insert 5 is higher than or equal to the bottom wall of the knife shaft body 41, it is equivalent to eliminating one of the components, which can save materials, simplify assembly steps, and avoid wear between the magnetic member 6 and the bottom wall of the mounting groove 31.

[0068] By providing a vertically extending receiving groove 33 on the outer bottom surface of the cup body 3 and inserting the matching part 7 into the receiving groove 33, the matching part 7 is limited and fixed. At the same time, the matching part 7 can be installed and fixed by simple plug-in, which makes the assembly simple and reliable, and helps to improve the assembly efficiency.

[0069] It should be noted that the present application does not specifically limit the forming method of the lower receiving groove 33 in this embodiment. As a preferred embodiment of the present application, Figure 2As shown, the bottom wall of the cup body 3 is provided with a downwardly protruding mounting portion 34, and a mounting groove 31 is formed on the mounting portion 34. The outer bottom surface of the cup body 3 is provided with a rib 32 arranged around the outside of the mounting portion 34, and the rib 32 cooperates with the outer wall of the mounting portion 34 to form a receiving groove 33.

[0070] It should also be noted that the present application does not specifically limit the structure of the fitting 7, which may be any one of the following embodiments:

[0071] In one preferred embodiment, Figure 2 As shown, the receiving groove 33 is annular, and the matching piece 7 includes a transversely extending transverse plate 71 and an inserting ring 72 connected to the outer periphery of the transverse plate 71 and inserted into the annular receiving groove 33 .

[0072] Furthermore, the magnetic component 6 and the plug-in ring 72 at least partially overlap in height, so that the cross plate 71 can provide a downward magnetic force to the magnetic component 6, and at the same time the plug-in ring 72 can provide a radial magnetic force to the magnetic component 6, thereby achieving a limiting effect on the knife shaft body 41 in two directions, which helps to further enhance the limiting effect on the knife shaft body 41.

[0073] In another preferred embodiment, Figure 5 As shown, a plurality of receiving grooves 33 are provided along the circumference of the cup body 3 , and a matching piece 7 is provided in each receiving groove 33 .

[0074] The technical solutions protected by this utility model are not limited to the above-described embodiments. It should be noted that the combination of the technical solutions of any one embodiment with the technical solutions of one or more other embodiments falls within the scope of protection of this utility model. Although the above description of this utility model has been provided in detail using general instructions and specific embodiments, it is obvious to those skilled in the art that modifications or improvements can be made based on this utility model. Therefore, such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A food processor with stable rotation, comprising a cup body with a built-in stirring blade and a detachable main unit located above the cup body, wherein the main unit is provided with a motor connected to the stirring blade, characterized in that: The mixing knife includes a blade and a knife shaft, and the knife shaft includes a knife shaft body for fixing the blade, and the knife shaft body is provided with a hollow cavity with a hollow interior and an open bottom end. The mixing knife also includes a fitting installed at the opening of the hollow cavity, and a mounting groove is provided on the bottom surface of the cup body. The bottom end of the knife shaft body and the fitting are plugged into the mounting groove, and the radial dimension of the fitting is less than or equal to the radial dimension of the knife shaft body inserted into the mounting groove, so that the mounting groove radially limits the knife shaft body.

2. A rotationally stable food processing machine according to claim 1, characterized in that: The insert is completely sunk into the opening of the hollow cavity, and the outer bottom surface of the insert is higher than the bottom surface of the blade shaft body or is flush with the bottom surface of the blade shaft body.

3. A rotationally stable food processing machine according to claim 2, characterized in that: The outer bottom surface of the engaging part is provided with an arc surface which is raised toward the top of the knife shaft.

4. A rotationally stable food processing machine according to claim 1, characterized in that: The fitting includes a first shaft segment inserted into the opening of the hollow cavity, and a second shaft segment located below the first shaft segment and radially expanded. The second shaft segment and the lower end of the knife shaft body are plugged into the mounting groove.

5. A rotationally stable food processing machine according to claim 4, characterized in that: The stirring blade also includes a magnetic part, the cup body is provided with a mating part that magnetically cooperates with the magnetic part, the second shaft section includes a step portion with a step surface facing upward, and the magnetic part is clamped between the step surface and the bottom surface of the blade shaft body.

6. A rotationally stable food processor according to any one of claims 1 to 4, characterized in that: The stirring blade further comprises a magnetic component mounted on the hollow cavity or the engaging component, and the cup body is provided with a matching component that magnetically matches the magnetic component.

7. A rotationally stable food processing machine according to claim 6, characterized in that: The magnetic member is mounted on the insert, and the insert is provided with a fixing groove for fixing the magnetic member; or, The magnetic component is installed on the embedded component, and the embedded component includes a base plate and a positioning ring extending upward from the base plate and fixedly connected to the bottom end of the knife shaft body. The inner wall of the positioning ring is provided with a plurality of vertically extending limiting ribs, and the limiting ribs are interference fit with the magnetic component.

8. The rotationally stable food processing machine according to claim 1, characterized in that: The inner diameter L1 of the mounting groove and the inner diameter L2 of the bottom wall of the cup body satisfy: 1 / 6≤L1 / L2≤1 / 4; or, The vertical height L3 of the knife shaft body when inserted into the installation groove and the vertical height L4 of the knife shaft body satisfy: 1 / 12≤L3 / L4≤1 / 9.

9. The rotationally stable food processing machine according to claim 1, characterized in that: The cup body is provided with a matching piece, the stirring blade is provided with a magnetic piece that is magnetically matched with the matching piece, and the outer bottom surface of the cup body is provided with a vertically extending receiving groove, and the matching piece is inserted into the receiving groove.

10. A rotationally stable food processor according to claim 9, characterized in that: The bottom wall of the cup body is provided with a downwardly convex mounting portion, the mounting groove is formed on the mounting portion, and the outer bottom surface of the cup body is provided with a rib surrounding the outside of the mounting portion, the rib cooperates with the outer wall of the mounting portion to form the receiving groove; or The receiving groove is annular, and the matching piece includes a transverse plate extending laterally and a plug-in ring connected to the outer periphery of the transverse plate and plugged into the annular receiving groove; or, A plurality of the accommodating grooves are provided along the circumference of the cup body, and the matching piece is provided in each of the accommodating grooves.

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