Stirring knife assembly and food processor

Abstract

The utility model relates to the technical field of food processers, in particular to a stirring knife assembly and a food processer, and aims to solve the problems that in the prior art, a knife assembly of a food processer 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, the cutter shaft comprises a connecting section located at the top of the cutter shaft and a transmission section connected to the lower end of the connecting section, the cutter assembly is detachably installed on the cutter shaft and comprises an inner shaft and a stirring cutter, and the stirring cutter comprises a cutter sleeve and a blade arranged on the cutter sleeve. The cutter sleeve and the transmission section are in transmission fit in the circumferential direction of the cutter shaft, the connecting section, the inner shaft and the cutter sleeve are sequentially arranged in a sleeved mode from inside to outside, the inner shaft is connected with the cutter sleeve, the inner shaft can rotate in the circumferential direction of the cutter shaft relative to the connecting section and can rotate to a first position and a second position, the connecting section and the inner shaft are kept relatively fixed at the first position, and the connecting section and the inner shaft are kept relatively fixed at the second position. The connecting section can be separated from the inner shaft, so that the knife assembly is detachable. Through the arrangement, the cutter assembly can be rapidly disassembled and assembled.

Description

Technical Field

[0001] The present application relates to the technical field of small household electrical appliances, 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 provides a blending knife assembly and a food processor, aiming to solve the problems of complicated disassembly and poor interchangeability of the knife assembly.

[0005] The present application provides a stirring knife assembly, comprising: a knife shaft, comprising a connecting section located at the top of the knife shaft and a transmission section connected to the lower end of the connecting section; and a knife assembly, which is detachably mounted on the knife shaft, the knife assembly comprising an inner shaft and a stirring knife, the stirring knife comprising a knife sleeve and a blade arranged in the knife sleeve, the knife sleeve and the transmission section are in transmission cooperation, the connecting section, the inner shaft and the knife sleeve are sequentially sleeved from the inside to the outside, the inner shaft is connected to the knife sleeve, the inner shaft can rotate relative to the connecting section along the circumferential direction of the knife shaft, the inner shaft can rotate to a first position and a second position, in the first position, the connecting section and the inner shaft remain relatively fixed, in the second position, the connecting section can be separated from the inner shaft, so that the knife assembly and the knife shaft are detachable.

[0006] In this solution, the inner shaft is connected to the mixing knife, and the knife assembly and the knife shaft can be fixed or separated in the axial direction by rotating the inner shaft, 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 in the axial direction 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 escaping from the knife shaft along the axial direction when rotating with the knife shaft.

[0007] 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 shaft, and the second torsion arm is assembled to the blade sleeve.

[0008] The tool sleeve and the inner shaft 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 inner shaft can rotate relative to the tool sleeve around the tool shaft axis. The structure is simple and easy to implement.

[0009] In the preferred technical solution of the above-mentioned stirring blade assembly, the inner shaft is provided with a first groove, and the first torsion arm is installed in the first groove; and / or, the 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 shaft away from one end of the blade shaft, and the first groove extends along the axial direction of the inner shaft to a preset depth, and the first torsion arm is installed in the first groove.

[0010] The first torsion arm is restricted on the inner shaft by the first groove, and the second torsion arm is restricted on the knife 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 shaft and the mixing knife 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 shaft and reduce the risk of the first torsion arm escaping from the first groove.

[0011] In the preferred technical solution of the above-mentioned stirring blade assembly, the connecting section is provided with a first plane parallel to the axis of the blade shaft, and the inner shaft is provided with a second plane. When the inner shaft is in the first position, the first plane intersects with the second plane, and when the inner shaft is in the second position, the first plane is parallel to the second plane.

[0012] A first plane and a second plane are set on the connecting section and the inner shaft, which can be used as installation marks to quickly sleeve the inner shaft onto the connecting section, so that when the first plane and the second plane are parallel, the inner shaft can be quickly sleeved onto the connecting section, and when the inner shaft needs to be rotated to the first position, it only needs to be rotated based on the second position.

[0013] In the preferred technical solution of the above-mentioned stirring blade assembly, the top of the connecting section is large and the bottom is small, the inner shaft is provided with an upper chamber for accommodating the top of the connecting section and a lower chamber for accommodating the bottom of the connecting section, the top of the connecting section is a spherical structure, and the first plane is provided on the opposite sides of the spherical structure, the lower chamber is columnar, and the second plane is provided on the opposite side walls.

[0014] When the inner shaft is in the first position, the second plane of the lower chamber abuts against the lower side of the top of the connecting section, and the inner shaft cannot escape from the knife shaft, so it can be firmly connected to the knife shaft. When the inner shaft is in the second position, the inner shaft can be directly put on the connecting section or directly removed from the connecting section, thereby facilitating the disassembly and assembly of the inner shaft.

[0015] In the preferred technical solution of the above-mentioned stirring blade assembly, the stirring blade assembly further comprises a plug, an end of the inner shaft away from the blade shaft extends out from the blade sleeve, and the plug is connected to the end.

[0016] The setting of the plug 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. The plug and the knife assembly form an integral structure. By applying a certain force to the plug, the plug drives the inner shaft to rotate to the first position or the second position.

[0017] In the preferred technical solution of the above-mentioned stirring knife assembly, one of the plug and the 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 along the circumference of the knife shaft, when the inner shaft 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 inner shaft is in the second position, the positioning portion is matched with the positioning matching portion for positioning at the second matching position.

[0018] The first matching position and the second matching position can limit the rotation angle of the plug, and then limit the rotation angle of the inner shaft, avoiding the problem that the inner shaft does not rotate into place or rotates beyond the set position, thereby ensuring that the inner shaft can accurately rotate to the first position and the second position as required.

[0019] 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 along the circumference 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 90 degrees apart.

[0020] The first cutoff end and the second cutoff end can limit the rotation angle of the positioning column and thus limit the rotation angle of the inner shaft. When the inner shaft rotates to the first position, the positioning column and the positioning groove just abut at the first matching position. When the inner shaft rotates to the second position, the positioning column and the positioning groove just abut at the second matching position. The arrangement of the above positioning groove and the positioning column can prevent the inner shaft from over-rotating, ensuring that the inner shaft accurately rotates to the set position, that is, ensuring the stability of the connection between the knife shaft and the knife assembly during rotation.

[0021] In the preferred technical solution of the above-mentioned stirring blade assembly, the orthographic projection of the plug on the vertical plane at least partially overlaps with the orthographic projection of the blade sleeve on the vertical plane.

[0022] Since the plug is connected to the inner shaft, and the inner shaft is in the knife sleeve, the plug can partially extend into the knife sleeve when connected to the inner shaft, so that the projection of the plug and the projection of the knife sleeve at least partially overlap, thereby ensuring the stability of the overall connection of the knife assembly and further preventing the knife assembly from escaping from the knife shaft during the rotation of the knife shaft.

[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 stirring knife 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 It is a disassembled schematic diagram of the food processor of the present application;

[0027] Figure 2 yes Figure 1 A schematic diagram of the disassembly of the knife assembly at the middle M from the cup holder;

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

[0029] Figure 4 yes Figure 1 Schematic diagram of the disassembly of the plug and the elastic torsion member at the M in the middle from the stirring blade;

[0030] Figure 5 yes Figure 1 The middle part is a cross-sectional view of the first plane facing the connecting section when the stirring blade assembly is in a locked state;

[0031] Figure 6 yes Figure 1 A cross-sectional view of a first plane perpendicular to the connecting section when the stirring blade assembly is in a locked state;

[0032] Figure 7 It is a schematic diagram of the connection section and the inner shaft of the stirring blade assembly of the present application when they are matched;

[0033] Figure 8 yes Figure 7 Middle AA section view;

[0034] Fig. 9 yes Figure 2 Bottom view of the knife assembly in FIG.

[0035] List of reference numerals:

[0036] 1. Mixing knife assembly; 10. Knife assembly; 11. Mixing knife; 111. Knife sleeve; 1111. Second groove; 1112. Positioning groove; 1112a. First cut-off end; 1112b. Second cut-off end; 112. Blade; 12. Elastic torsion member; 121. Spiral portion; 122. First torsion arm; 123. Second torsion arm; 13. Inner shaft; 130. Total chamber; 131. First groove; 132. Upper chamber; 133. Lower chamber; 1331. Second plane; 14. Knife shaft; 141. Connecting section; 1411. First plane; 1412. Bottom of connecting section; 1413. Top of connecting section; 142. Transmission section; 15. Plug; 151. Positioning column; 152. Mounting groove; 153. Protrusion; 2. Main unit; 3. Cup assembly; 31. Cup holder; 32. Cup body. DETAILED DESCRIPTION

[0037] 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.

[0038] 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 "an" do not indicate a quantitative limitation, but indicate the presence of at least one.

[0039] Unless otherwise specified, similar words such as "lower" and / or "upper" are for convenience of description only and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprises" mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalent elements or objects, and other elements or objects are not excluded in this application. "Connected" or "connected" 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; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] like Figure 1 As shown, the present application provides a food processor, including a main machine 2, a cup assembly 3 and a stirring blade assembly 1. The main machine 2 includes a motor shaft, the cup assembly 3 includes a cup holder 31 and a cup body 32 connected to the cup holder 31, the cup holder 31 is installed on the top of the main machine 2, and the stirring blade assembly 1 is arranged in the cup body 32 and is connected to the motor shaft. Since the stirring blades 11 corresponding to different functions of the food processor are different, in order to meet the fast switching of different functions of the food processor, the stirring blade 11 needs to be quickly replaced. Therefore, the stirring blade 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 stirring blade 11, thereby saving the user time in replacing the stirring blade 11 while meeting the different functions of the food processor.

[0041] like Figure 2 and Figure 3 As shown, the stirring blade assembly 1 comprises a blade shaft 14 and a blade assembly 10. The lower end of the blade shaft 14 is used to be connected to the motor shaft, and the rotation of the motor shaft can drive the blade shaft 14 to rotate synchronously. The blade assembly 10 is detachably connected to the upper end of the blade shaft 14.

[0042] The upper end of the blade shaft 14 includes a connecting section 141 located at the top of the blade shaft 14 and a transmission section 142 connected to the lower end of the connecting section 141, and the connecting section 141 is coaxial with the transmission section 142. The blade assembly 10 includes an inner shaft 13 and a mixing blade 11, and the mixing blade 11 includes a blade sleeve 111 and a blade 112 arranged in the blade sleeve 111. The blade sleeve 111 and the transmission section 142 are connected to each other along the circumference of the blade shaft, so that during the rotation of the blade shaft 14, the transmission section 142 of the blade shaft 14 can transmit power to the blade sleeve 111, so that the blade sleeve 111 and the blade 112 can rotate synchronously with the blade shaft 14. The connecting section 141, the inner shaft 13, and the blade sleeve 111 are sequentially sleeved from the inside to the outside, and the inner shaft 13 is also connected to the blade sleeve 111, and the inner shaft 13 can rotate relative to the connecting section 141 and the blade sleeve 111 along the circumference of the blade shaft. Specifically, the inner shaft 13 can be rotated to a first position and a second position. In the first position, the connecting section 141 and the inner shaft 13 are relatively fixed along the axial direction of the blade shaft. Since the inner shaft 13 is connected to the blade sleeve 111, the blade sleeve 111 is also relatively fixed to the blade shaft 14 in the axial direction, that is, the blade assembly 10 and the blade shaft 14 are relatively fixed in the axial direction. During the rotation of the blade shaft 14, the relative fixation in the axial direction can prevent the blade assembly 10 from being disengaged from the blade shaft 14, thereby ensuring the safety of the mixing blade assembly 1 during the rotation. In the second position, the connecting section 141 can be separated from the inner shaft 13, and the inner shaft 13 can be disengaged from the connecting section 141 of the blade shaft 14 together with the blade sleeve 111 and the blade 112. At this time, the blade assembly 10 can be quickly removed from the blade shaft 14 as a whole, which is convenient to disassemble and has a fast disassembly speed. The present application can achieve the axial fixation or separation of the knife assembly 10 and the knife shaft 14 by rotating the inner shaft 13, so that the knife assembly 10 can be disassembled, which is convenient for replacing the knife assembly 10. At the same time, the food processor can be easily cleaned after the knife assembly 10 is disassembled. In addition, the knife assembly 10 remains relatively fixed in the axial direction during the rotation with the knife shaft 14, which can improve the safety of the mixing knife assembly 1 during operation and avoid the problem that the knife assembly 10 is axially disengaged from the knife shaft 14 when rotating with the knife shaft 14.

[0043] In one embodiment, if Figure 3 and Figure 4As shown, the knife assembly 10 also includes an elastic torsion piece 12, which can connect the knife sleeve 111 with the inner shaft 13. The elastic torsion piece 12 includes an annular spiral portion 121, a first torsion arm 122 connected to one end of the spiral portion 121, and a second torsion arm 123 connected to the other end of the spiral portion 121. The first torsion arm 122 is assembled to the inner shaft 13, and the second torsion arm 123 is assembled to the knife sleeve 111. In this way, the knife sleeve 111 and the inner shaft 13 can be elastically connected by the torsion preload force of the first torsion arm 122 and the second torsion arm 123 of the elastic torsion piece 12, so that the inner shaft 13 can rotate relative to the knife sleeve 111 around the axis of the knife shaft 14, and the structure is simple and easy to implement. The elastic torsion piece 12 can be a torsion spring. Of course, in some other embodiments, the elastic torsion member 12 can also take other forms, such as a tension spring, which is arranged to extend around the axis of the knife shaft 14 and can be elastically deformed, and is located between the inner shaft 13 and the knife sleeve 111. One end of the tension spring is connected to the inner shaft 13, and the other end is connected to the knife sleeve 111. The inner shaft 13 and the knife sleeve 111 can also be enabled to rotate relative to each other around the axis of the knife shaft 14. The above is not restrictive and can be arranged according to the needs of technical personnel in this field. The above are all within the protection scope of the present application.

[0044] In one embodiment, if Figure 4 As shown, the inner shaft 13 may be provided with a first groove 131, and the first torsion arm 122 may be installed in the first groove 131, so as to achieve the stability of the position of the first torsion arm 122 when it acts on and abuts against the inner shaft 13. Similarly, the knife sleeve 111 may also be provided with a second groove 1111, and the second groove 1111 may be specifically opened on the inner surface, and the second torsion arm 123 may be installed in the second groove 1111, so as to achieve the stability of the second torsion arm 123 acting on and abutting against the knife sleeve 111. In this way, the first torsion arm 122 is restricted on the inner shaft 13 by the first groove 131, and the second torsion arm 123 is restricted on the knife sleeve 111 by the second groove 1111, so that the first torsion arm 122 and the second torsion arm 123 form a relatively stable pre-tightening force, and then the inner shaft 13 and the mixing knife 11 are elastically connected together.

[0045] In one embodiment, the spiral portion 121 is sleeved outside the inner shaft 13, and the first torsion arm 122 can be arranged to extend toward the center of the spiral portion 121 and be arranged in a straight line structure, and, to match, a straight line first groove 131 can be arranged on the end surface of the inner shaft 13 away from the blade shaft 14, the first groove 131 extends to a preset depth along the axial direction of the inner shaft 13, and the first torsion arm 122 is installed in the first groove 131. In this way, it can be ensured that the first torsion arm 122 is more reliably against the inner shaft 13, and the risk of the first torsion arm 122 coming out of the first groove 131 is further reduced.

[0046] The mixing blade 11 is connected to the inner shaft 13 by the elastic torsion piece 12, which makes it easier to disassemble the mixing blade 11 and the inner shaft 13. The blade assembly 10 can be disassembled into the mixing blade 11, the inner shaft 13 and the elastic torsion piece 12. Therefore, when the food processor needs to be replaced with a mixing blade 11 with other functions, the blade assembly 10 is first removed from the blade shaft 14, and then the mixing blade 11 on the blade assembly 10 is removed and replaced with the required mixing blade 11, without having to replace the entire blade assembly 10, thereby saving costs.

[0047] It should be noted that, in this embodiment, Figure 3 and Figure 4 As shown, the mixing knife 11 includes a knife sleeve 111 and a blade 112 disposed in the knife sleeve 111. The number of blades 112 is not limited, and can be one or more. In an embodiment with multiple blades 112, the blades 112 can be distributed around the circumference of the knife sleeve 111, but are not limited thereto. Each blade 112 can be bent upward or downward. In addition, the knife sleeve 111 is coaxial with the knife shaft 14.

[0048] In one embodiment, if Figure 4 As shown, the mixing blade assembly 1 further includes a plug 15, and one end of the inner shaft 13 away from the blade shaft 14 extends out from the blade sleeve 111, and the plug 15 is connected to the end. The end refers to the end of the inner shaft 13 away from the blade shaft 14. After the plug 15 is provided, the elastic torsion member 12 is restricted between the plug 15 and the inner shaft 13. The provision of the plug 15 can further prevent the blade assembly 10 from falling off the blade shaft 14 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 blade sleeve 111 and contaminating the blade sleeve 111, making it difficult to clean the blade sleeve 111. In addition, the provision of the plug 15 can also facilitate the application of force to the knife assembly 10. When the knife assembly 10 is installed on the knife shaft 14, a certain force is applied to the plug 15 so that the plug 15 drives the inner shaft 13 to rotate to the first position, thereby fixing the knife assembly 10 on the knife shaft 14 and rotating synchronously with the knife shaft 14, or rotating the plug 15 to rotate the inner shaft 13 to the second position so that the knife assembly 10 can be removed from the knife shaft 14.

[0049] It should be noted that the connection between the above-mentioned middle knife assembly 10 and the cock 15 can be connected by plugging. In this case, two mounting grooves 152 can be set on the cock 15. The two mounting grooves 152 are separated by a protrusion 153. The protrusion 153 extends into the first groove 131 of the inner shaft 13. The two parts of the inner shaft 13 located on both sides of the first groove 131 extend into the corresponding mounting grooves 152 respectively, thereby achieving the fixation of the cock 15 and the inner shaft 13. In order to further enhance the stability of the connection between the cock 15 and the knife assembly 10, the mounting groove 152 and the inner shaft 13 can also be set as an interference connection. Of course, the mounting groove 152 can also be set to only one or more. When it is set to one, the end of the inner shaft 13 away from the knife shaft 14 directly extends into the mounting groove 152. The way the above-mentioned cock 15 is connected to 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.

[0050] In one embodiment, if Figure 4 As shown, the plug 15 is provided with a positioning portion, the knife sleeve 111 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 and positioning along the circumference of the knife shaft 14. Since the inner shaft 13 and the plug 15 are fixed, the inner shaft 13 and the plug 15 can rotate synchronously relative to the stirring knife 11 and the knife shaft 14. When the inner shaft 13 rotates to the first position, the positioning portion on the plug 15 rotates to the first matching position and matches and positions with the positioning matching portion. The knife assembly 10 is axially fixed to the knife shaft 14. When the inner shaft 13 rotates to the second position, the positioning portion on the plug 15 rotates to the second matching position and matches and positions with the positioning matching portion. The knife assembly 10 and the knife shaft 14 are detachable in the axial direction. The above-mentioned first matching position and second matching position can limit the rotation angle of the plug 15, and then limit the rotation angle of the inner shaft 13, avoiding the problem that the inner shaft 13 does not rotate in place or rotates beyond the set position, thereby ensuring that the inner shaft can accurately rotate to the first position and the second position according to the demand.

[0051] In one embodiment, if Figure 4As shown, the positioning portion includes a positioning column 151, and the positioning matching portion includes a positioning groove 1112. The positioning groove 1112 extends along the circumference of the knife shaft 14, and is provided with a first cut-off end 1112a and a second cut-off end 1112b. In the first matching position, the positioning column 151 abuts against the first cut-off end 1112a, and in the second matching position, the positioning column 151 abuts against the second cut-off end 1112b. The following is an introduction using the clockwise rotation of the knife shaft 14 as an example. After the knife assembly 10 and the plug 15 are integrated, the elastic torsion member 12, under the action of the preload force, makes the positioning column 151 always abut against the first cut-off end 1112a. By applying a certain force to the plug 15, the positioning column 151 is rotated clockwise to the second cut-off end 1112b. At this time, the shape of the knife sleeve 111 just matches the shape of the transmission section 142, and the inner shaft 13 can just be inserted into the knife shaft 14. Therefore, the knife assembly 10 is inserted into the knife shaft 14 as a whole. At this position, the knife sleeve 111 is connected with the transmission section 142, and the inner shaft 13 is in the second position. Afterwards, the external force applied to the plug 15 is removed. At this time, the plug 15 rotates counterclockwise under the action of the restoring force of the elastic torsion member 12, and the positioning column 151 on the plug 15 rotates from the second cut-off end 1112b to the first cut-off end 1112a and is restricted by the first cut-off end 1112a and no longer moves. The plug 15 and the inner shaft 13 stop rotating. At this time, the inner shaft 13 just rotates to the first position, and the knife shaft 14 and the inner shaft 13 are axially fixed. When the knife assembly 10 rotates clockwise following the knife shaft 14, the inner shaft 13 has a tendency to rotate counterclockwise due to the force of the elastic torsion member 12. At this time, the positioning column 151 abuts against the first cut-off end 1112a, thereby preventing the inner shaft 13 from continuing to rotate counterclockwise. Therefore, the inner shaft 13 is always kept in the first position under the action of the positioning column 151 and the first cut-off end 1112a. Therefore, the knife assembly 10 is always relatively fixed with the knife shaft 14 in the axial direction during the rotation process, thereby preventing the knife assembly 10 from coming off the knife shaft 14. When it is necessary to remove the knife assembly 10 from the knife shaft 14, the cock 15 is rotated clockwise, and when the positioning column 151 rotates from the first cut-off end 1112a to the second cut-off end 1112b, the inner shaft 13 and the knife shaft 14 can be separated, and the knife assembly 10 is directly taken out of the knife shaft 14 as a whole. The arrangement of the positioning groove 1112 can prevent the inner shaft 13 from over-rotating. The groove wall of the positioning groove 1112, i.e., the first cut-off end 1112a and the second cut-off end 1112b, limits the rotation angle of the positioning column 151 and thus limits the rotation angle of the inner shaft 13, so that the inner shaft 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 14 rotating clockwise. When the knife shaft 14 rotates counterclockwise, the abutment position of the positioning column 151 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 14 rotates counterclockwise is the same as that when the knife shaft 14 rotates clockwise, and will not be repeated here.

[0052] It should be noted that the knife sleeve 111 is connected to the knife shaft 14 by transmission. The internal shape of the knife sleeve 111 and the shape of the transmission section 142 of the knife shaft 14 can be set to be a mutually matching polygon, so that the knife sleeve 111 can be driven to rotate synchronously during the rotation of the knife shaft 14. Fig. 9 The internal shape of the knife sleeve 111 shown in Figure 7 The shapes of the transmission sections 142 are introduced with reference to the long direction as an example. Of course, they can also be other polygonal or other irregular shapes. The above are not restrictive and can be set according to the needs of technical personnel in this field. All of the above are within the protection scope of this application.

[0053] In one embodiment, if Figure 4 As shown, the first mating position and the second mating position are spaced 90 degrees apart, that is, the central angles corresponding to the first cut-off end 1112a and the second cut-off end 1112b (i.e. Figure 4 The α shown in is 90 degrees. At this time, still taking the clockwise rotation of the knife shaft 14 as an example, when the inner shaft 13 and the knife shaft 14 are fixed and the inner shaft 13 is rotated to the first position, the plug 15 can be rotated 90 degrees clockwise to the second position. At this time, the inner shaft 13 and the knife shaft 14 can be separated, and the interval between the first matching position and the second matching position is set to 90 degrees, which can make it easier to control the rotation angle of the inner shaft 13. 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 shaft 13 and the knife shaft 14 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.

[0054] It should be noted that the positioning portion and the positioning matching portion can not only be set as the positioning column 151 and the positioning groove 1112, 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 15, and the positioning matching portion can be two positioning limiting blocks arranged on the outer peripheral surface of the knife sleeve 111. After the plug 15 is installed on the inner shaft 13, the positioning block is located between the two positioning limiting blocks, so that the rotation angle of the plug 15 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 151 and the positioning groove 1112, 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.

[0055] In one embodiment, the positive projection of the plug 15 on the vertical plane at least partially overlaps with the positive projection of the knife sleeve 111 on the vertical plane. The vertical plane described in the present application is a plane parallel to the axial direction of the knife shaft 14. Since the plug 15 is connected to the inner shaft 13, and the inner shaft 13 is in the knife sleeve 111, the plug 15 can also partially extend into the knife sleeve 111 when connected to the inner shaft 13, so that the projection of the plug 15 at least partially overlaps with the projection of the knife sleeve 111. Figure 5 As shown, the stirring blade assembly 1 is cut along a cutting plane parallel to the orthographic projection, or, as shown Figure 6 As shown, when the mixing blade assembly 1 is cut along a cutting plane perpendicular to the orthographic projection, it can be seen that the plug 15 partially extends into the blade sleeve 111. The plug 15 extending into the blade sleeve 111 can further ensure the stability of the overall connection of the blade assembly 10 and prevent the blade assembly 10 from falling off the blade shaft 14 during the rotation of the blade shaft 14.

[0056] In one embodiment, if Figure 7 and Figure 8 As shown, the connecting section 141 is provided with a first plane 1411 parallel to the axis of the knife shaft 14, and the inner shaft 13 is provided with a second plane 1331. When the inner shaft 13 is in the first position, the first plane 1411 intersects with the second plane 1331. When the inner shaft 13 is in the second position, the first plane 1411 is parallel to the second plane 1331.

[0057] The setting of the first plane 1411 and the second plane 1331 can be used as installation marks to quickly align the inner shaft 13 with the knife shaft 14 and accurately insert it onto the knife shaft 14. When the first plane 1411 and the second plane 1331 are parallel, the inner shaft 13 can be quickly and directly inserted onto the connecting section 141 and is in the second position. The inner shaft 13 rotates in a certain direction from the second position to the first position. At this time, the first plane 1411 and the second plane 1331 intersect and form a limit with each other, thereby limiting the inner shaft 13 from escaping from the connecting section 141; the connection state of the inner shaft 13 and the knife shaft 14 can be quickly identified through the setting of the first plane 1411 and the second plane 1331, and the inner shaft 13 can be quickly fixed to the knife shaft 14 when the knife assembly 110 and the knife shaft 14 are installed.

[0058] In one embodiment, if Figure 5 , 7, 8, and 9 are schematic diagrams showing that the inner shaft 13 and the connecting section 141 of the blade shaft 14 can be sleeved together. The top 1413 of the connecting section 141 is large and the bottom 1412 is small. The inner shaft 13 is provided with an upper chamber 132 for accommodating the top 1413 of the connecting section 141 and a lower chamber 133 for accommodating the bottom 1412 of the connecting section 141. The top 1413 of the connecting section 141 is a spherical structure, and the first planes 1411 are provided on the opposite sides of the spherical structure. The lower chamber 133 is columnar, and the opposite side walls are provided with second planes 1331. The shape of the connecting section 141 in the present application is a shape that is large at the top and small at the bottom. Figure 7 As shown in the example, the connecting section 141 is configured as a structure formed by cutting two planes on the front and rear surfaces of the connecting section 141 after the bottom 1412 is a cylinder and the top 1413 is a sphere with a diameter greater than the cylinder to form an integral body. The two planes cut are the first plane 1411. The shape of the total chamber 130 of the inner shaft 13 accommodating the connecting section 141 is as follows: the upper chamber 132 is a sphere, and the lower chamber 133 is a cylinder with a diameter equal to that of the sphere of the upper chamber 132, and the two planes are cut off to form a cavity in the middle part (such as Fig. 9 As shown in the figure, the upper chamber 132 is connected to the lower chamber 133, the position of the two planes that are cut off forms a surface called a second plane 1331, the distance between the second planes 1331 is greater than the distance between the first planes 1411, the diameter of the sphere at the top 1413 of the connecting section 141 is less than or equal to the diameter of the sphere at the upper chamber 132, and when the first plane 1411 is parallel to the second plane 1331, the inner shaft 13 can be quickly and directly sleeved on the connecting section 141 and is in the second position, the inner shaft 13 rotates in a certain direction from the second position, and thus rotates to the first position, at which time, the first plane 1411 intersects with the second plane 1331, the second plane 1331 is located below the top 1413 of the connecting section 141, and forms a limit with the top 1413, limiting the top 1413 from escaping from the upper chamber 132, thereby limiting the inner shaft 13 from escaping from the knife shaft 14. The outer contour line of the connecting section 141 matches the outer contour line of the whole formed by the upper chamber 132 and the lower chamber 133 of the inner shaft 13. Therefore, when the inner shaft 13 rotates following the knife shaft 14, there will be no problem of the inner shaft 13 jumping in the axial direction of the knife shaft 14, and there will be no problem of the knife assembly 10 falling off the knife shaft 14. The above arrangement can further increase the stability of the rotation of the knife assembly 10.

[0059] It should be noted that the total chamber 130 of the connecting section 141 and the inner shaft 13 can be a structure of the above-mentioned shape, or can be other structures. For example, the total chamber 130 of the connecting section 141 and the inner shaft 13 are both polygons that are larger at the top and smaller at the bottom. 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 this application.

[0060] To sum up, under the action of the elastic torsion member 12, the stirring blade 11, the inner shaft 13 and the elastic torsion member 12 can form a whole and can also be separated into different parts. Therefore, when the food processor needs to switch to other stirring blades 11, the blade assembly 10 can be directly removed from the blade shaft 14, and the stirring blade 11 on the blade assembly 10 can be removed and replaced with the required stirring blade 11. The quick disassembly and assembly saves the time for replacing the stirring blade 11. At this time, in order to meet the different functions of the food processor, only different stirring blades 11 need to be equipped, and there is no need to re-equip the entire stirring blade assembly 1 or the entire blade assembly 10, which saves costs.

[0061] 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 (14), comprising a connecting section (141) located at the top of the knife shaft (14) and a transmission section (142) connected to the lower end of the connecting section (141); and The knife assembly (10) is detachably mounted on the knife shaft (14), the knife assembly (10) comprising an inner shaft (13) and a stirring knife (11), the stirring knife (11) comprising a knife sheath (111) and a blade (112) arranged on the knife sheath (111), the knife sheath (111) and the transmission section (142) being in transmission cooperation, the connecting section (141), the inner shaft (13) and the knife sheath (111) being sequentially sleeved from the inside to the outside, the inner shaft (13 ) is connected to the knife sleeve (111), the inner shaft (13) can rotate relative to the connecting section (141) along the circumferential direction of the knife shaft (14), and the inner shaft (13) can rotate to a first position and a second position. In the first position, the connecting section (141) and the inner shaft (13) remain relatively fixed. In the second position, the connecting section (141) can be separated from the inner shaft (13), so that the knife assembly (10) and the knife shaft (14) are detachable.

2. The stirring blade assembly (1) according to claim 1, characterized in that: The knife assembly (10) also includes an elastic torsion member (12), which includes an annular spiral portion (121), a first torsion arm (122) connected to one end of the spiral portion (121), and a second torsion arm (123) connected to the other end of the spiral portion (121), wherein the first torsion arm (122) is assembled to the inner shaft (13), and the second torsion arm (123) is assembled to the knife sleeve (111).

3. The stirring blade assembly (1) according to claim 2, characterized in that: The inner shaft (13) is provided with a first groove (131), and the first torsion arm (122) is installed in the first groove (131); and / or, The knife sleeve (111) is provided with a second groove (1111), and the second torsion arm (123) is installed in the second groove (1111); and / or, The first torsion arm (122) extends toward the center of the spiral portion (121) and is arranged in a straight line structure. A straight line first groove (131) is arranged on the end surface of the inner shaft (13) away from the knife shaft (14). The first groove (131) extends along the axial direction of the inner shaft (13) to a preset depth. The first torsion arm (122) is installed in the first groove (131).

4. The stirring blade assembly (1) according to any one of claims 1 to 3, characterized in that: The connecting section (141) is provided with a first plane (1411) parallel to the axis of the knife shaft (14), and the inner shaft (13) is provided with a second plane (1331). When the inner shaft (13) is in the first position, the first plane (1411) intersects with the second plane (1331); when the inner shaft (13) is in the second position, the first plane (1411) is parallel to the second plane (1331).

5. The stirring blade assembly (1) according to claim 4, characterized in that: The connecting section (141) has a large top and a small bottom. The inner shaft (13) is provided with an upper chamber (132) for accommodating the top of the connecting section (141) and a lower chamber (133) for accommodating the bottom of the connecting section (141). The top of the connecting section (141) is a spherical structure, and first planes (1411) are provided on two opposite sides of the spherical structure. The lower chamber (133) is columnar, and the second planes (1331) are provided on two opposite side walls.

6. The stirring blade assembly (1) according to any one of claims 1 to 3, characterized in that: The stirring blade assembly (1) further comprises a plug (15); one end of the inner shaft (13) away from the blade shaft (14) extends out from the blade sleeve (111), and the plug (15) is connected to the end.

7. The stirring blade assembly (1) according to claim 6, characterized in that: One of the plug (15) and the knife sleeve (111) 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 knife shaft (14). When the inner shaft (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 inner shaft (13) is in the second position, the positioning portion is matched with the positioning matching portion for positioning at the second matching position.

8. The stirring blade assembly (1) according to claim 7, characterized in that: The positioning portion comprises a positioning column (151), the positioning matching portion comprises a positioning groove (1112), the positioning groove (1112) extends along the circumference of the knife shaft (14), and is provided with a first cut-off end (1112a) and a second cut-off end (1112b), in the first matching position, the positioning column (151) abuts against the first cut-off end (1112a), and in the second matching position, the positioning column (151) abuts against the second cut-off end (1112b); and / or, The first mating position and the second mating position are spaced 90 degrees apart.

9. The stirring blade assembly (1) according to claim 6, characterized in that: The orthographic projection of the tap (15) on the vertical plane at least partially overlaps with the orthographic projection of the knife sleeve (111) on the vertical plane.

10. A food processor, characterized in that: include: A main machine (2), including a motor shaft; A cup assembly (3), comprising a cup seat (31) and a cup body (32) connected to the cup seat (31), wherein the cup seat (31) is mounted on the top of the main machine (2); 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 (32) and is drivingly connected to the motor shaft.

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