Stirring knife assembly and food processor

Abstract

The utility model relates to the technical field of stirring knives, in particular to a stirring knife assembly and a food processor, and aims to solve the problems that in the prior art, a knife assembly of a food processor is complex to disassemble and poor in interchangeability. In order to achieve the purpose, the stirring cutter assembly comprises a cutter shaft and a cutter assembly body, the cutter assembly body is detachably installed on the cutter shaft, the cutter assembly body comprises an inner cutter sleeve provided with a blade, an outer cutter sleeve and an abutting part, the cutter shaft, the inner cutter sleeve and the outer cutter sleeve are coaxial and sequentially arranged in a sleeving mode from inside to outside, and the abutting part is arranged on the inner cutter sleeve or the outer cutter sleeve. The outer cutter sleeve can rotate relative to the inner cutter sleeve in the circumferential direction of the cutter shaft, the outer cutter sleeve can rotate to a first position and a second position, in the first position, the abutting part can apply pressure to the cutter shaft in the radial direction of the cutter shaft, the inner cutter sleeve and the cutter shaft are kept relatively fixed, in the second position, the abutting part is separated from the cutter shaft, and the inner cutter sleeve and the cutter shaft are detachable; and the knife assembly is detachable. Through the arrangement, the disassembly and assembly speed of the cutter assembly on the cutter shaft is increased.

Description

Technical Field

[0001] The present application relates to the technical field of food processors, and specifically provides a stirring blade assembly and a food processor. Background Art

[0002] At present, in order to meet the multiple needs of users such as juicing and making soy milk, a multifunctional food processor has appeared on the market. The food processor is provided with a knife assembly. For example, when squeezing juice, the knife assembly rotates in the food processor to squeeze juice. When making soy milk, the knife assembly is replaced. However, since the knife assembly in the prior art is complicated to disassemble when replacing, it wastes the user's time. In addition, the complicated disassembly results in poor interchangeability of the knife assembly, which makes the efficiency of the knife shaft food processor low when switching functions.

[0003] In view of this, it is necessary to provide an improved technical solution to solve the above problems. Summary of the invention

[0004] The present application aims to solve the above-mentioned technical problem, that is, to solve the problem that the knife assembly of the food processor in the prior art is complicated to disassemble and has poor interchangeability.

[0005] The present application provides a stirring knife assembly, comprising: a knife shaft; and a knife assembly, which is detachably mounted on the knife shaft, the knife assembly comprising an inner knife sleeve, an outer knife sleeve and a pressing portion provided with a blade, the knife shaft, the inner knife sleeve and the outer knife sleeve being coaxial and sequentially sleeved from the inside to the outside, the pressing portion being arranged on the inner knife sleeve or the outer knife sleeve, the outer knife sleeve being arranged to be rotatable relative to the inner knife sleeve along the circumference of the knife shaft, the outer knife sleeve being rotatable to a first position and a second position, in the first position, the pressing portion being able to apply pressure to the knife shaft along the radial direction of the knife shaft, the inner knife sleeve and the knife shaft being kept relatively fixed, in the second position, the pressing portion being separated from the knife shaft, and the inner knife sleeve (12) being detachable from the knife shaft.

[0006] In this solution, the inner knife sleeve with the blade is connected to the outer knife sleeve, and the knife assembly can be fixed or separated from the knife shaft by rotating the outer knife sleeve, which improves the disassembly and assembly speed of the knife assembly and also improves the working efficiency of the food processor. The knife assembly can remain relatively fixed during the rotation with the knife shaft, and can also improve the safety of the mixing knife assembly during operation, thereby preventing the knife assembly from axially escaping from the knife shaft when rotating with the knife shaft.

[0007] In the preferred technical solution of the above-mentioned stirring blade assembly, the inner blade sleeve is provided with a mounting hole which penetrates radially along the blade shaft, and the pressing portion is movably arranged in the mounting hole. In the first position, the outer blade sleeve presses the pressing portion radially along the blade shaft, and the pressing portion presses the blade shaft radially along the blade shaft. In the second position, the outer blade sleeve releases the pressing portion.

[0008] By arranging the mounting hole on the inner knife sleeve, the pressing part can abut against the knife shaft when the outer knife sleeve is rotated to the first position, so that the knife assembly and the knife shaft are fixed in the axial direction, and the structure is simple.

[0009] In the preferred technical solution of the above-mentioned stirring blade assembly, the outer surface of the blade shaft is provided with an annular groove extending along the circumference of the blade shaft, and in the first position, the pressing portion is located in the annular groove; and / or, the inner surface of the outer blade sleeve is provided with a groove, and the groove extends axially along the blade shaft, and in the second position, the groove is opposite to the pressing portion along the radial direction of the blade shaft; and / or, the pressing portion is provided with a plurality of groups, and the plurality of groups of pressing portions are evenly distributed along the circumference of the blade shaft.

[0010] When the outer tool sleeve rotates to the first position, the annular groove can limit the pressing part in the axial direction, thereby preventing the pressing part from escaping from the annular groove, further ensuring the stability of the axial connection between the knife assembly and the knife shaft. The setting of the groove can enable the pressing part to be quickly separated from the knife shaft when the outer tool sleeve rotates to the second position, thereby realizing the rapid disassembly of the knife assembly from the knife shaft.

[0011] In the preferred technical solution of the above-mentioned stirring blade assembly, the pressing portion is configured as a sphere, the hole formed on the outer surface of the inner blade sleeve as the mounting hole is a large hole, and the hole formed on the inner surface of the inner blade sleeve is a small hole, and the diameter of the pressing portion is larger than the small hole and smaller than the large hole; and / or, the depth of the groove is larger than the depth of the annular groove, and the difference in depth between the two is set between 0.1mm and 0.2mm; and / or, the groove is configured as a trapezoidal groove with a large mouth and a small bottom, and the two inclined side walls of the trapezoidal groove are spaced 95 degrees to 120 degrees apart.

[0012] The mounting hole is arranged as described above to ensure that the spherical pressing portion can smoothly enter the mounting hole from the large hole and move in the mounting hole. When the outer tool sleeve is rotated to the first position, the pressing portion cannot escape from the small hole, thereby ensuring the relative fixed stability of the tool assembly and the tool shaft in the axial direction. Inclining the side wall of the groove can make the process of the pressing portion being squeezed and abutted against the tool shaft smoother.

[0013] In the preferred technical solution of the above-mentioned stirring blade assembly, the blade assembly also includes an elastic torsion member, which includes an annular spiral portion, a first torsion arm connected to one end of the spiral portion, and a second torsion arm connected to the other end of the spiral portion, the first torsion arm is assembled to the inner blade sleeve, and the second torsion arm is assembled to the outer blade sleeve.

[0014] The outer tool sleeve and the inner tool sleeve are elastically connected by the torsional preload of the first torsion arm and the second torsion arm of the elastic torsion member, so that the outer tool sleeve can rotate relative to the inner tool sleeve around the axis of the tool shaft. The structure is simple and easy to implement.

[0015] In the preferred technical solution of the above-mentioned stirring blade assembly, the inner blade sleeve is provided with a first groove, and the first torsion arm is installed in the first groove; and / or, the outer blade sleeve is provided with a second groove, and the second torsion arm is installed in the second groove; and / or, the first torsion arm extends toward the center of the spiral portion and is provided with a straight-line structure, and a first straight-line groove is provided on the end surface of the inner blade sleeve away from one end of the blade shaft, and the first groove extends along the axial direction of the inner blade sleeve to a preset depth, and the first torsion arm is installed in the first groove.

[0016] The first torsion arm is restricted on the inner tool sleeve by the first groove, and the second torsion arm is restricted on the outer tool sleeve by the second groove, so that the first torsion arm and the second torsion arm form a relatively stable pre-tightening force, and then the inner tool sleeve and the outer tool sleeve are elastically connected together. The first groove is set to be a straight line, which can ensure that the first torsion arm is more reliably against the inner tool sleeve, reducing the risk of the first torsion arm escaping from the first groove.

[0017] In the preferred technical solution of the above-mentioned stirring blade assembly, the stirring blade assembly also includes a plug, and one end of the inner blade sleeve away from the blade shaft extends out from the outer blade sleeve, the plug is connected to the end, and the elastic torsion member is located between the inner blade sleeve and the plug.

[0018] The provision of the cock can further prevent the knife assembly from falling off the knife shaft during rotation, and can also facilitate the application of force to the knife assembly.

[0019] In the preferred technical solution of the above-mentioned stirring knife assembly, one of the plug and the outer knife sleeve is provided with a positioning portion, and the other is provided with a positioning matching portion, and the positioning portion and the positioning matching portion are provided with a first matching position and a second matching position for matching positioning in the axial direction around the knife shaft, when the outer knife sleeve is in the first position, the positioning portion is matched with the positioning matching portion for positioning at the first matching position, and when the outer knife sleeve is in the second position, the positioning portion is matched with the positioning matching portion for positioning at the second matching position.

[0020] The first matching position and the second matching position can limit the rotation angle of the outer tool sleeve to avoid the problem that the outer tool sleeve does not rotate into place or rotates beyond the set position, thereby ensuring that the outer tool sleeve can be accurately rotated to the first position and the second position according to needs.

[0021] In the preferred technical solution of the above-mentioned stirring knife assembly, the positioning portion includes a positioning column, the positioning matching portion includes a positioning groove, the positioning groove extends around the axis of the knife shaft, and is provided with a first cut-off end and a second cut-off end, in the first matching position, the positioning column abuts against the first cut-off end, and in the second matching position, the positioning column abuts against the second cut-off end; and / or, the first matching position and the second matching position are spaced 37 degrees apart.

[0022] The positioning column can limit the rotation angle of the outer tool sleeve by abutting against the first stop end and the second stop end. When the outer tool sleeve rotates to the first position, the positioning column and the positioning groove just abut at the first matching position. When the outer tool sleeve rotates to the second position, the positioning column and the positioning groove just abut at the second matching position. The arrangement of the above-mentioned positioning groove and the positioning column can prevent the outer tool sleeve from over-rotating, ensuring that the outer tool sleeve is accurately rotated to the set position, that is, ensuring the stability of the connection between the tool shaft and the tool assembly during rotation.

[0023] The present application also provides a food processor, comprising: a main unit, including a motor shaft; and a cup assembly, including a cup seat and a cup body connected to the cup seat, wherein the cup seat is installed on the top of the main unit; and a stirring knife assembly as described in any one of the above technical solutions, wherein the stirring knife assembly is arranged in the cup body and is drivingly connected to the motor shaft.

[0024] The food processor of the present application can ensure the stability of the stirring knife assembly in rotation in the food processor by using any of the stirring knife assemblies described above. At the same time, when the food processor switches functions, the stirring knife assembly can be quickly disassembled and assembled from the cup holder, thereby facilitating the rapid replacement of the knife assembly and improving the working efficiency of the food processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a schematic diagram of a food processor of the present application;

[0027] Figure 2 This application Figure 1 Schematic diagram of the knife assembly at the middle M being removed from the cup holder;

[0028] Figure 3 is an exploded view of the knife assembly of the present application;

[0029] Figure 4 This application Figure 1 A top view of the stirring blade assembly at the middle M in a locked state cut along the horizontal direction at the position of the pressing part;

[0030] Figure 5 yes Figure 4 Middle AA section view;

[0031] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0032] Figure 7 yes Figure 4 Middle BB section view;

[0033] Figure 8 It is a schematic diagram of the disassembly of the plug and the elastic twisting member on the stirring knife assembly of the present application from the knife assembly.

[0034] List of reference numerals:

[0035] 1. Mixing knife assembly; 10. Knife assembly; 11. Plug; 111. Positioning column; 112. Mounting groove; 113. Protrusion; 12. Inner knife sleeve; 121. Mounting hole; 1211. Large hole; 1212. Small hole; 122. First groove; 13. Outer knife sleeve; 131. Groove; 132. Second groove; 133. Positioning groove; 133a. First cut-off end; 133b. Second cut-off end; 14. Blade; 141. Nut; 142. Gasket; 15. Pressing part; 16. Elastic torsion member; 161. Spiral part; 162. First torsion arm; 163. Second torsion arm; 17. Knife shaft; 171. Annular groove; 2. Cup assembly; 21. Cup body; 22. Cup holder; 3. Host. DETAILED DESCRIPTION

[0036] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments are only to present the concept of the present application and do not represent all implementations under the concept of the present application. Instead, they are only examples of devices and methods consistent with some aspects of the concept of the present application.

[0037] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in this application specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limitation, but indicate the existence of at least one. "Multiple" or "several" means two or more.

[0038] Unless otherwise specified, words such as "lower" and / or "upper", "top", "bottom" and the like are for convenience of description only and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalent elements or objects, and other elements or objects are not excluded in this application. "Connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0039] like Figure 1 As shown, the present application provides a food processor, including a main machine 3, a cup assembly 2 and a stirring knife assembly 1. The main machine 3 includes a motor shaft, the cup assembly 2 includes a cup holder 22 and a cup body 21 connected to the cup holder 22, the cup holder 22 is installed on the top of the main machine 3, and the stirring knife assembly 1 is arranged in the cup body 21 and is connected to the motor shaft. Since different functions of the food processor correspond to different knife assemblies 10, in order to meet the fast switching of different functions of the food processor, the knife assembly 10 needs to be quickly replaced. Therefore, the stirring knife assembly 1 of the present application can be quickly disassembled and assembled from the food processor, which is convenient for the fast replacement of the knife assembly 10, thereby saving the user time of replacing the knife assembly 10 while meeting the different functions of the food processor.

[0040] like Figure 2 As shown, the stirring blade assembly 1 includes a blade shaft 17 and a blade assembly 10. The lower end of the blade shaft 17 is used to be connected to the motor shaft. The rotation of the motor shaft can drive the blade shaft 17 to rotate synchronously. The blade assembly 10 is detachably connected to the upper end of the blade shaft 17.

[0041] The knife assembly 10 includes an inner knife sleeve 12 provided with a blade 14, an outer knife sleeve 13 and a pressing portion 15. The knife shaft 17, the inner knife sleeve 12 and the outer knife sleeve 13 are coaxial and are sequentially arranged from the inside to the outside. The pressing portion 15 is arranged on the inner knife sleeve 12 or the outer knife sleeve 13. The outer knife sleeve 13 is assembled to the outside of the inner knife sleeve 12. The outer knife sleeve 13 can rotate relative to the inner knife sleeve 12 along the circumference of the knife shaft 17. The outer knife sleeve 13 can rotate to a first position and a second position. In the first position, the pressing portion 15 can apply pressure to the knife shaft 17 along the radial direction of the knife shaft 17, and the inner knife sleeve 12 and the knife shaft 17 remain relatively fixed. In the second position, the pressing portion 15 is separated from the knife shaft 17, and the inner knife sleeve 12 and the knife shaft 17 are detachable, so that the knife assembly 10 and the knife shaft 17 are detachable. Specifically, the outer blade sleeve 13 rotates to the first position, and the inner blade sleeve 12 is fixed to the blade shaft 17 under the action of the pressing portion 15, that is, the blade assembly 10 is relatively fixed to the blade shaft 17, specifically, at least relatively fixed in the axial direction. During the rotation of the blade shaft 17, at least the relative fixation in the axial direction can prevent the blade assembly 10 from falling off the blade shaft 17, thereby ensuring the safety of the mixing blade assembly 1 during the rotation process and achieving the anti-slip blade. In the second position, the pressing portion 15 is separated from the blade shaft 17, that is, the pressing portion 15 does not press the blade shaft 17, at this time, the inner blade sleeve 12 and the blade shaft 17 can be separated, so that the inner blade sleeve 12 drives the entire blade assembly 10 to be disassembled from the blade shaft 17, thereby achieving the effect that the blade assembly 10 can be quickly disassembled from the blade shaft 17. The present application can fix or separate the knife assembly 10 and the knife shaft 17 by rotating the outer knife sleeve 13, thereby improving the disassembly and assembly speed of the knife assembly 10 and also improving the working efficiency of the food processor. In addition, the knife assembly 10 remains relatively fixed during the rotation with the knife shaft 17, and can also improve the safety of the mixing knife assembly 1 during operation, thereby avoiding the problem of the knife assembly 10 escaping from the knife shaft 17 along the axial direction when rotating with the knife shaft 17.

[0042] The specific implementation of the pressing portion 15 is not limited. For example, a pressing protrusion can be provided on the inner surface of the outer knife sleeve 13, and a hole can be opened on the inner knife sleeve 12. When the outer knife sleeve 13 rotates to the first position, the pressing protrusion passes through the hole on the inner knife sleeve 12 and abuts against the knife shaft 17. When the outer knife sleeve 13 rotates to the first position, the pressing protrusion is misaligned with the hole on the inner knife sleeve 12, and the pressing protrusion does not abut against the knife shaft 17.

[0043] In this embodiment, Figures 3 to 6As shown, the inner knife sleeve 12 is provided with a mounting hole 121 which penetrates radially along the knife shaft 17, and the pressing portion 15 is movably arranged in the mounting hole 121. In the first position, the outer knife sleeve 13 presses the pressing portion 15 radially along the knife shaft 17, so that the pressing portion 15 presses radially against the knife shaft 17 along the knife shaft 17. That is to say, when the outer knife sleeve 13 rotates to the first position, the outer knife sleeve 13 can press the pressing portion 15, so that the pressing portion 15 moves radially along the knife shaft in the mounting hole 121 and presses against the knife shaft 17. Since one side of the pressing portion 15 presses against the knife shaft 17 and the other side presses against the outer knife sleeve 13, and the pressing portion 15 is also located in the mounting hole 121 of the inner knife sleeve 12, the outer knife sleeve 13, the inner knife sleeve 12 and the knife shaft 17 can be relatively fixed in the axial direction. At this time, the knife assembly 10 and the knife shaft 17 are relatively fixed in the axial direction. In the second position, the outer knife sleeve 13 releases the pressing portion 15, the pressing portion 15 is separated from the knife shaft 17, and the pressing portion 15 no longer generates radial force on the knife shaft 17. Therefore, the inner knife sleeve 12 and the outer knife sleeve 13 are axially separable from the knife shaft 17, and the knife assembly 10 can be removed from the knife shaft 17. In this solution, by providing the mounting hole 121 on the inner knife sleeve 12, the pressing portion 15 can be abutted against the knife shaft 17 when the outer knife sleeve 13 is rotated to the first position, so that the knife assembly 10 and the knife shaft 17 are fixed in the axial direction, and the structure is simple.

[0044] In one embodiment, if Figures 2 to 6 As shown, the outer surface of the blade shaft 17 is provided with an annular groove 171 extending along the circumference of the blade shaft 17. In the first position, the pressing portion 15 is located in the annular groove 171 (as shown in FIG. Figures 4 to 6 As shown), in this way, when the pressing portion 15 is pressed into the annular groove 171, the annular groove 171 limits the pressing portion 15 in the axial direction, thereby preventing the pressing portion 15 from escaping from the annular groove 171, further ensuring the stability of the axial connection between the knife assembly 10 and the knife shaft 17.

[0045] In one embodiment, if Figure 3 , 4 As shown, a plurality of mounting holes 121 can be provided on the inner knife sleeve 12, and the plurality of mounting holes 121 can be evenly provided on the inner knife sleeve 12 along the circumferential direction. Accordingly, a plurality of groups of pressing parts 15 are provided, and the plurality of groups of pressing parts 15 are evenly distributed along the circumferential direction of the knife shaft 17, and the plurality of groups of pressing parts 15 are provided one by one in correspondence with the plurality of mounting holes 121. When the outer knife sleeve 13 is in the first position, the plurality of groups of pressing parts 15 can realize a more uniform radial force on the knife shaft 17, and the plurality of groups of pressing parts 15 can also make the connection between the pressing parts 15 and the knife shaft 17 more stable, further preventing the knife assembly 10 from coming off the knife shaft 17 during the rotation process.

[0046] In one embodiment, a groove 131 may be further provided on the inner surface of the outer knife sleeve 13, and the groove 131 extends axially along the knife shaft 17. In the second position, the groove 131 is opposite to the pressing portion 15 in the radial direction of the knife shaft 17. At this time, a part of the pressing portion 15 falls into the groove 131, so that the pressing portion 15 is located as a whole between the groove 131 and the inner knife sleeve 12, and the pressing portion 15 is no longer subjected to the radial force of pressing the knife shaft 17 given by the outer knife sleeve 13. Therefore, the pressing portion 15 is separated from the knife shaft 17, and the inner knife sleeve 12, the outer knife sleeve 13 and the knife shaft 17 are axially separable. At this time, the knife assembly 10 can be removed from the knife shaft 17. The provision of the groove 131 enables the pressing portion 15 to be quickly separated from the knife shaft 17 when the outer knife sleeve 13 is rotated to the second position, thereby realizing the quick removal of the knife assembly 10 from the knife shaft 17.

[0047] In one embodiment, if Figure 4 As shown, the groove 131 can be set as a trapezoidal groove 131 with a large mouth and a small bottom, and the interval between the two inclined side walls of the trapezoidal groove 131 is (i.e. Figure 4 The range of β) shown in is between 95 degrees and 120 degrees, for example, it can be 95 degrees, 100 degrees, 110 degrees, 120 degrees, but not limited thereto. In the process of the outer knife sleeve 13 rotating from the second position to the first position, the inclined side wall gradually squeezes the pressing portion 15 until the pressing portion 15 abuts against the knife shaft 17. The inclined setting of the side wall of the groove 131 can make the pressing portion 15 pressed against the knife shaft 17 more stable and smooth. In the process of the outer knife sleeve 13 rotating from the first position to the second position, due to the inclined setting of the side wall of the groove 131, the pressing portion 15 can enter the groove 131 more smoothly, avoiding the problem that the pressing portion 15 bounces into the groove 131 and collides with the bottom of the groove 131 when rotating to the second position.

[0048] In one embodiment, if Figure 6 As shown, the pressing part 15 is set as a sphere, the hole formed on the outer surface of the inner knife sleeve 12 by the mounting hole 121 is a large hole 1211, and the hole formed on the inner surface of the inner knife sleeve 12 is a small hole 1212. The diameter of the pressing part 15 is larger than the small hole 1212 and smaller than the large hole 1211. The mounting hole 121 is set in a form similar to a trapezoidal hole, which can ensure that the spherical pressing part 15 can smoothly enter the mounting hole 121 from the large hole 1211 and can move in the mounting hole 121. When the outer knife sleeve 13 rotates to the first position, the pressing part 15 cannot escape from the small hole 1212, thereby realizing that one end of the pressing part 15 is pressed by the outer knife sleeve 13, and the other end is pressed on the small hole 1212 of the inner knife sleeve 12, and the part extending out of the small hole 1212 can also extend into the annular groove 171, thereby ensuring the relative fixed stability of the knife assembly 10 and the knife shaft 17 in the axial direction.

[0049] It should be noted that the pressing portion 15 can be a sphere or other shapes. The pressing portion 15 can be a component separately provided on the mounting hole 121, or can be a protruding block provided on the inner wall of the outer tool sleeve 13. When the outer tool sleeve 13 rotates to the first position, the protruding block extends into the mounting hole 121 and abuts against the knife shaft 17. When the outer tool sleeve 13 rotates to the second position, the protruding block is separated from the knife shaft. The above is not restrictive and can also be arranged according to the needs of technical personnel in this field. All of the above are within the protection scope of this application.

[0050] In one embodiment, if Figure 7 As shown, the depth D1 of the groove 131 is greater than the depth D2 of the annular groove 171, and the depth difference between the two is set between 0.1 mm and 0.2 mm. The depth of the groove 131 is greater than the depth of the annular groove 171, so that when the outer knife sleeve 13 is rotated to the second position, the pressing portion 15 can be completely dropped between the groove 131 and the mounting hole 121, avoiding the situation that one end of the pressing portion 15 has entered the groove 131 but the other end of the pressing portion 15 is still located in the annular groove 171 and has not completely escaped, thereby making it difficult to remove the knife assembly 10 from the knife shaft 17. The setting that the depth of the groove 131 is greater than the depth of the annular groove 171 can avoid the problem that it is difficult to remove the knife assembly 10 from the knife shaft 17.

[0051] In one embodiment, if Figure 8 As shown, the knife assembly 10 also includes an elastic torsion member 16, which can connect the outer knife sleeve 13 with the inner knife sleeve 12. The elastic torsion member 16 includes an annular spiral portion 161, a first torsion arm 162 connected to one end of the spiral portion 161, and a second torsion arm 163 connected to the other end of the spiral portion 161. The first torsion arm 162 is assembled to the inner knife sleeve 12, and the second torsion arm 163 is assembled to the outer knife sleeve 13. In this way, the outer knife sleeve 13 and the inner knife sleeve 12 can be elastically connected by the torsion preload force of the first torsion arm 162 and the second torsion arm 163 of the elastic torsion member 16, so that the outer knife sleeve 13 can rotate relative to the knife shaft 17 and the inner knife sleeve 12 around the axis of the knife shaft 17, and the structure is simple and easy to implement. The elastic torsion member 16 may be a torsion spring. Of course, in some other embodiments, the elastic torsion member 16 may also be in other forms, such as a tension spring. The tension spring is arranged to extend around the axis of the knife shaft 17 and can be elastically deformed. It is located between the inner knife sleeve 12 and the outer knife sleeve 13. One end of the tension spring is connected to the inner knife sleeve 12, and the other end is connected to the outer knife sleeve 13. The outer knife sleeve 13 can also be relatively rotated around the axis of the knife shaft 17. The above is not restrictive and can be arranged according to the needs of those skilled in the art. The above are all within the scope of protection of the present application.

[0052] In one embodiment, if Figure 8As shown, the inner knife sleeve 12 is provided with a first groove 122, and the first torsion arm 162 is installed in the first groove 122, so that the position stability of the first torsion arm 162 when it acts on and abuts against the inner knife sleeve 12 is achieved. Similarly, the outer knife sleeve 13 is provided with a second groove 132, and the second torsion arm 163 is installed in the second groove 132. The second groove 132 can be specifically opened on the inner surface, and the second torsion arm 163 is installed in the second groove 132, so that the stability of the second torsion arm 163 acting on and abutting against the outer knife sleeve 13 is achieved. In this way, the first torsion arm 162 is restricted on the inner knife sleeve 12 by the first groove 122, and the second torsion arm 163 is restricted on the outer knife sleeve 13 by the second groove 132, so that the first torsion arm 162 and the second torsion arm 163 form a relatively stable pre-tightening force, and then the inner knife sleeve 12 and the outer knife sleeve 13 are elastically connected together.

[0053] In one embodiment, the first torsion arm 162 extends toward the center of the spiral portion 161 and is provided in a straight-line structure. To match, a straight-line first groove 122 is provided on the end surface of the inner knife sleeve 12 away from the knife shaft 17. The first groove 122 extends to a preset depth along the axial direction of the inner knife sleeve 12, and the first torsion arm 162 is installed in the first groove 122. In this way, it can be ensured that the first torsion arm 162 is more reliably against the inner knife sleeve 12, and the risk of the first torsion arm 162 coming out of the first groove 122 is further reduced.

[0054] The outer knife sleeve 13 is connected to the inner knife sleeve 12 fixed with the blade 14 by the elastic torsion piece 16, which can make it easier to disassemble the outer knife sleeve 13 and the inner knife sleeve 12. The knife assembly 10 can be disassembled into the outer knife sleeve 13, the inner knife sleeve 12, the pressing portion 15 and the elastic torsion piece 16. Therefore, when the food processor needs to replace the blade 14 with other functions, the knife assembly 10 can be removed from the knife shaft 17 and the knife assembly 10 can be directly replaced, thereby speeding up the replacement speed of the knife assembly 10. The inner knife sleeve 12 on the knife assembly 10 can also be removed and replaced with the inner knife sleeve 12 with the required blade 14, without replacing the entire knife assembly 10, thus saving costs. In addition, since the blade 14 and the inner knife sleeve 12 can be connected by the nut 141, the blade 14 is set on the inner knife sleeve 12, and then the nut 141 is screwed on the outside of the inner knife sleeve 12 to fix the blade 14. In order to firmly connect the blade 14 and the nut 141, a gasket 142 can also be set between the two. When the blade 14 needs to be replaced, the blade 14 can also be removed from the inner knife sleeve 12 and replaced with the required blade 14 after the knife assembly 10 is disassembled. At this time, there is no need to replace the entire knife assembly 10 when switching the food processor function, which also saves costs.

[0055] It should be noted that, in this embodiment, the inner knife sleeve 12 is provided with a blade 14, and the number of the blades 14 is not limited, and can be one or more. In the embodiment with multiple blades 14, the blades 14 can be distributed around the circumference of the inner knife sleeve 12, but are not limited thereto, and each blade 14 can be bent upward or downward. In addition, the inner knife sleeve 12 is coaxial with the knife shaft 17.

[0056] In one embodiment, if Figure 7 , 8 As shown, the mixing blade assembly 1 further includes a cock 11, and one end of the inner blade sleeve 12 away from the blade shaft 17 extends out from the outer blade sleeve 13, and the cock 11 is connected to the end, which refers to the end of the inner blade sleeve 12 away from the blade shaft 17. After the cock 11 is provided, the elastic torsion member 16 is restricted between the cock 11 and the inner blade sleeve 12. The provision of the cock 11 can further prevent the blade assembly 10 from falling off the blade shaft 17 during the rotation process, and can also prevent the juice or soy milk or other mashed materials in the food processor from splashing into the inner blade sleeve 12 and contaminating the inner blade sleeve 12, causing the problem of difficulty in cleaning. In addition, the provision of the plug 11 can also facilitate the application of force to the knife assembly 10. Before the knife assembly 10 is installed on the knife shaft 17, a certain force is applied to the plug 11 so that the plug 11 drives the inner knife sleeve 12 to rotate to the second position. After the knife assembly 10 is installed on the knife shaft 17, removing the force on the plug 11 can make the outer knife sleeve 13 rotate to the first position to achieve axial fixation of the knife assembly 10 on the knife shaft 17.

[0057] It should be noted that the above-mentioned knife assembly 10 and the cock 11 can be connected by plug connection. In this case, two mounting grooves 112 can be set on the cock 11. The two mounting grooves 112 are separated by a protrusion 113. The protrusion 113 extends into the first groove 122 of the inner knife sleeve 12. The two parts of the inner knife sleeve 12 located on both sides of the first groove 122 extend into the corresponding mounting grooves 112 respectively, thereby achieving the fixation of the cock 11 and the inner knife sleeve 12. In order to further enhance the stability of the connection between the cock 11 and the knife assembly 10, the mounting groove 112 and the inner knife sleeve 12 can also be set as an interference connection. Of course, the mounting groove 112 can also be set to only one or more. When it is set to one, the end of the inner knife sleeve 12 away from the knife shaft 17 directly extends into the mounting groove 112. The above-mentioned way of connecting the cock 11 and the knife assembly 10 is not restrictive and can be set according to the needs of those skilled in the art. The above are all within the protection scope of this application.

[0058] In one embodiment, if Figure 8As shown, one of the plug 11 and the outer tool sleeve 13 is provided with a positioning portion, and the other is provided with a positioning matching portion. The positioning portion and the positioning matching portion are provided with a first matching position and a second matching position for matching positioning along the circumference of the tool shaft 17. When the outer tool sleeve 13 is in the first position, the positioning portion is matched and positioned with the positioning matching portion at the first matching position. When the outer tool sleeve 13 is in the second position, the positioning portion is matched and positioned with the positioning matching portion at the second matching position.

[0059] Taking the example that the plug 11 is provided with a positioning portion and the outer knife sleeve 13 is provided with a positioning matching portion, since the inner knife sleeve 12 and the plug 11 are fixed, and the inner knife sleeve 12 can be circumferentially fixed with the knife shaft 17, the outer knife sleeve 13 can rotate relative to the inner knife sleeve 12 and the plug 11. When the outer knife sleeve 13 rotates to the first position, the positioning matching portion on the outer knife sleeve 13 cooperates with the positioning portion at the first matching position for positioning. At this time, the knife assembly 10 is axially fixed with the knife shaft 17. When the outer knife sleeve 13 rotates to the second position, the positioning matching portion on the outer knife sleeve 13 cooperates with the positioning portion at the second matching position for positioning, and the knife assembly 10 is detachable from the knife shaft 17 in the axial direction. The above-mentioned first matching position and second matching position can limit the rotation angle of the outer knife sleeve 13, avoid the problem that the outer knife sleeve 13 does not rotate in place or rotates beyond the set position, thereby ensuring that the outer knife sleeve 13 can accurately rotate to the first position and the second position according to the needs.

[0060] In one embodiment, if Figure 8 As shown, the positioning portion includes a positioning column 111, and the positioning matching portion includes a positioning groove 133. The positioning groove 133 extends along the circumference of the knife shaft 17 and is provided with a first stop end 133a and a second stop end 133b. In the first matching position, the positioning column 111 abuts against the first stop end 133a, and in the second matching position, the positioning column 111 abuts against the second stop end 133b.

[0061] The following is an introduction using the clockwise rotation of the knife shaft 17 as an example. After the knife assembly 10 and the cock 11 are integrated, the elastic torsion member 16 makes the positioning column 111 always abut against the first cut-off end 133a under the action of the preload force. Before the knife assembly 10 is installed on the knife shaft 17, a certain force is applied to the cock 11 to make the positioning column 111 rotate clockwise to the second cut-off end 133b. At this time, the shape of the inner knife sleeve 12 just matches the shape of the knife shaft 17. Therefore, the knife assembly 10 can be inserted into the knife shaft 17 as a whole. At this position, the outer knife sleeve 13 is in the second position, and the inner knife sleeve 12 is in contact with the knife shaft 17. The shaft 17 is fixed circumferentially, and then the external force applied to the plug 11 is removed. Since the inner knife sleeve 12 is circumferentially fixed together with the plug 11 and the knife shaft 17, the outer knife sleeve 13 rotates clockwise under the action of the restoring force of the elastic torsion member 16, so that the positioning groove 133 of the outer knife sleeve 13 rotates from the second stop end 133b abutting against the positioning column 111 to the first stop end 133a abutting against the positioning column 111. The first stop end 133a of the positioning groove 133 is restricted by the positioning column 111 and no longer moves. At this time, the outer knife sleeve 13 just rotates to the first position, and the knife shaft 17 and the inner knife sleeve 12 are axially fixed. When the knife assembly 10 rotates clockwise following the knife shaft 17, the outer knife sleeve 13 has a tendency to rotate clockwise due to the force of the elastic torsion member 16. At this time, the positioning column 111 abuts against the first cut-off end 133a, thereby preventing the outer knife sleeve 13 from rotating relative to the inner knife sleeve 12. Therefore, the outer knife sleeve 13 is always kept in the first position under the cooperation of the positioning column 111 and the first cut-off end 133a. During the rotation process, the knife assembly 10 is always relatively fixed with the knife shaft 17 in the axial direction, thereby preventing the knife assembly 10 from coming off the knife shaft 17. When it is necessary to remove the knife assembly 10 from the knife shaft 17, the outer knife sleeve 13 is rotated counterclockwise, and the positioning groove 133 of the outer knife sleeve 13 rotates from the first cut-off end 133a abutting against the positioning column 111 to the second cut-off end 133b abutting against the positioning column 111. At this time, the knife assembly 10 and the knife shaft 17 are circumferentially separable, and the knife assembly 10 is directly taken out of the knife shaft 17 as a whole. The arrangement of the positioning groove 133 can prevent the outer knife sleeve 13 from over-rotating. The groove wall of the positioning groove 133, i.e., the first cut-off end 133a and the second cut-off end 133b, limits the rotation angle of the outer knife sleeve 13, so that the outer knife sleeve 13 can be rotated to the first position or the second position under the force. It should be noted that the above is introduced based on the example of the knife shaft 17 rotating clockwise. When the knife shaft 17 rotates counterclockwise, the abutment position of the positioning column 111 and the rotation direction of the knife assembly 10 are opposite to the above. The working principle of the knife assembly 10 when the knife shaft 17 rotates counterclockwise is the same as the working principle when the knife shaft 17 rotates clockwise, and will not be repeated here.

[0062] In one embodiment, the first mating position and the second mating position are spaced 37 degrees apart, that is, the central angle of the first cut-off end 133a and the second cut-off end 133b (ie Figure 8 The α shown in is 37 degrees. At this time, still taking the clockwise rotation of the knife shaft 17 as an example, when the inner knife sleeve 12 is fixed to the knife shaft 17 and the outer knife sleeve 13 is rotated to the first position, the outer knife sleeve 13 can be rotated to the second position by rotating 37 degrees counterclockwise. At this time, the inner knife sleeve 12 and the knife shaft 17 can be separated, and the interval between the first matching position and the second matching position is set to 37 degrees, which can facilitate the control of the rotation angle of the inner knife sleeve 12. Of course, the interval between the first matching position and the second matching position can also be set to other degrees. At this time, the rotation angle of the inner knife sleeve 12 and the knife shaft 17 that is axially fixed or opened is other degrees, such as 60 degrees, 120 degrees, etc. The above is not restrictive and can be set according to the needs of those skilled in the art. The above are all within the protection scope of this application.

[0063] It should be noted that the positioning portion and the positioning matching portion can not only be set as the positioning column 111 and the positioning groove 133, but also can be set as other structures. For example, the positioning portion can be a positioning block arranged on the outer peripheral surface of the plug 11, and the positioning matching portion can be two positioning limiting blocks arranged on the outer peripheral surface of the tool sleeve. After the plug 11 is installed on the inner tool sleeve 12, the positioning block is located between the two positioning limiting blocks, so that the rotation angle of the outer tool sleeve 13 is between the angles limited by the two positioning limiting blocks. The working principle of the matching structure at this time is the same as the working principle of the above-mentioned positioning column 111 and the positioning groove 133, and will not be repeated one by one. Therefore, the above is not restrictive and can be set according to the needs of technical personnel in this field. The above are all within the protection scope of the present application.

[0064] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A stirring blade assembly (1), characterized in that: include: a knife shaft (17); and The knife assembly (10) is detachably mounted on the knife shaft (17). The knife assembly (10) comprises an inner knife sleeve (12) provided with a blade (14), an outer knife sleeve (13) and a pressing portion (15). The knife shaft (17), the inner knife sleeve (12) and the outer knife sleeve (13) are coaxial and are sequentially sleeved from the inside to the outside. The pressing portion (15) is arranged on the inner knife sleeve (12) or the outer knife sleeve (13). The outer knife sleeve (13) is arranged to be able to move along the knife shaft (17). 7) The outer knife sleeve (13) can rotate circumferentially relative to the inner knife sleeve (12), and can rotate to a first position and a second position. In the first position, the pressing portion (15) can apply pressure to the knife shaft (17) along the radial direction of the knife shaft (17), and the inner knife sleeve (12) and the knife shaft (17) remain relatively fixed. In the second position, the pressing portion (15) is separated from the knife shaft (17), and the inner knife sleeve (12) and the knife shaft (17) are detachable.

2. The stirring blade assembly (1) according to claim 1, characterized in that: The inner knife sleeve (12) is provided with a mounting hole (121) which penetrates radially along the knife shaft (17); the pressing portion (15) is movably arranged in the mounting hole (121); in the first position, the outer knife sleeve (13) presses the pressing portion (15) radially along the knife shaft (17); the pressing portion (15) presses the knife shaft (17) radially along the knife shaft (17); in the second position, the outer knife sleeve (13) releases the pressing portion (15).

3. The stirring blade assembly (1) according to claim 2, characterized in that: The outer surface of the knife shaft (17) is provided with an annular groove (171) extending along the circumference of the knife shaft (17), and in the first position, the pressing portion (15) is located in the annular groove (171); and / or, The inner surface of the outer blade sleeve (13) is provided with a groove (131), the groove (131) extends axially along the blade shaft (17), and in the second position, the groove (131) is opposite to the pressing portion (15) along the radial direction of the blade shaft (17); and / or, The pressing portions (15) are provided in a plurality of groups, and the plurality of pressing portions (15) are evenly distributed along the circumference of the knife shaft (17).

4. The stirring blade assembly (1) according to claim 3, characterized in that: The pressing portion (15) is configured as a sphere, the mounting hole (121) formed on the outer surface of the inner knife sleeve (12) is a large hole (1211), the hole formed on the inner surface of the inner knife sleeve (12) is a small hole (1212), and the diameter of the pressing portion (15) is larger than the small hole (1212) and smaller than the large hole (1211); and / or, The depth of the groove (131) is greater than the depth of the annular groove (171), and the difference between the depths of the two is set between 0.1 mm and 0.2 mm; and / or, The groove (131) is configured as a trapezoidal groove with a large mouth and a small bottom, and the interval between two inclined side walls of the trapezoidal groove is 95 to 120 degrees.

5. The stirring blade assembly (1) according to any one of claims 1 to 4, characterized in that: The knife assembly (10) also includes an elastic torsion member (16), which includes an annular spiral portion (161), a first torsion arm (162) connected to one end of the spiral portion (161), and a second torsion arm (163) connected to the other end of the spiral portion (161), wherein the first torsion arm (162) is assembled to the inner knife sleeve (12), and the second torsion arm (163) is assembled to the outer knife sleeve (13).

6. The stirring blade assembly (1) according to claim 5, characterized in that: The inner knife sleeve (12) is provided with a first groove (122), and the first torsion arm (162) is installed in the first groove (122); and / or, The outer blade sleeve (13) is provided with a second groove (132), and the second torsion arm (163) is installed in the second groove (132); and / or, The first torsion arm (162) extends toward the center of the spiral portion (161) and is arranged in a straight line structure. A straight line first groove (122) is arranged on the end surface of the inner knife sleeve (12) away from the knife shaft (17). The first groove (122) extends along the axial direction of the inner knife sleeve (12) to a preset depth. The first torsion arm (162) is installed in the first groove (122).

7. The stirring blade assembly (1) according to claim 5, characterized in that: The stirring blade assembly (1) further comprises a plug (11), one end of the inner blade sleeve (12) away from the blade shaft (17) protrudes from the outer blade sleeve (13), the plug (11) is connected to the end, and the elastic torsion member (16) is located between the inner blade sleeve (12) and the plug (11).

8. The stirring blade assembly (1) according to claim 7, characterized in that: One of the plug (11) and the outer knife sleeve (13) is provided with a positioning portion, and the other is provided with a positioning matching portion. The positioning portion and the positioning matching portion are provided with a first matching position and a second matching position for matching positioning in the axial direction around the knife shaft (17). When the outer knife sleeve (13) is in the first position, the positioning portion is matched with the positioning matching portion for positioning at the first matching position. When the outer knife sleeve (13) is in the second position, the positioning portion is matched with the positioning matching portion for positioning at the second matching position.

9. The stirring blade assembly (1) according to claim 8, characterized in that: The positioning portion comprises a positioning column (111), the positioning matching portion comprises a positioning groove (133), the positioning groove (133) extends around the axis of the knife shaft (17), and is provided with a first cut-off end (133a) and a second cut-off end (133b), in the first matching position, the positioning column (111) abuts against the first cut-off end (133a), in the second matching position, the positioning column (111) abuts against the second cut-off end (133b); and / or, The first mating position is spaced 37 degrees from the second mating position.

10. A food processor, characterized in that: include: A main machine (3), including a motor shaft; and A cup assembly (2), comprising a cup seat (22) and a cup body (21) connected to the cup seat (22), wherein the cup seat (22) is mounted on the top of the main machine (3); and The stirring blade assembly (1) according to any one of claims 1 to 9, wherein the stirring blade assembly (1) is arranged in the cup body (21) and is drivingly connected to the motor shaft.

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