Stirring knife assembly and food processor

Abstract

The invention relates to a stirring knife assembly and a food processor. The stirring cutter assembly comprises a cutter module and a cutter head module, and the cutter module and the cutter head module are detachably connected. The cutter module comprises a cutter holder and a blade fixed to a holder body, and a through hole is formed in the cutter holder in the height direction of the cutter holder in a penetrating mode. Two centrosymmetric driving blocks are arranged at the first end in the through hole in a protruding manner; a matching groove is concavely formed in the second end in the through hole; a guide inclined wall is arranged at the bottom of each driving block, and in the two opposite side walls, one is a first guide side wall, and the other is a second guide side wall. The stirring knife assembly is convenient to install and take out; moreover, during use, a user can place the tool apron on the driving shaft naturally, and can press the tool apron manually or directly start the driving shaft to rotate so as to lock the tool apron automatically, so that the user can use the tool apron more conveniently; and meanwhile, after being used, the paper box is not easy to block, and can be taken out by directly lifting upwards when needing to be taken out.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of food processing, and particularly relates to a stirring knife assembly and a food processor. BACKGROUND

[0002] The food processor is a powerful household appliance in modern kitchens, which integrates the functions of making soy milk, grinding dry powder, juicing, making meat stuffing, and shaving ice, and can make various foods such as juice, soy milk, jam, dry powder, shaved ice, and meat stuffing. In order to facilitate the cleaning of the food processor, the stirring knife assembly in the existing food processor adopts a detachable structure. However, in actual use, it is found that there are many problems, for example, it is not convenient to disassemble, and the user needs multiple steps to disassemble it. Moreover, the existing solution has the problem of being easily stuck and not convenient to disassemble.

[0003] Therefore, there is an urgent need for a new design of a detachable stirring knife assembly structure. SUMMARY

[0004] The purpose of the present application is to disclose a stirring knife assembly and a food processor, which is convenient to disassemble and take out, and is not easily stuck after use, facilitating disassembly.

[0005] In order to achieve the above-mentioned purpose, the present application discloses a stirring knife assembly, which comprises a knife module and a knife disc module, and the knife module and the knife disc module are detachably connected. The knife module comprises a knife seat and a blade fixed to the seat body, and the knife seat is provided with a through hole in the height direction of the seat body; two driving blocks that are centrally symmetric are protrudingly arranged at the first end in the through hole; and a matching groove is recessed at the second end in the through hole. The bottom of each driving block is provided with a guide inclined wall, and among the opposite two side walls, one is a first guide side wall, and the other is a second guide side wall; the first guide side wall is vertically arranged, and the second guide side wall is provided with a vertical side wall segment and a locking inclined wall segment in the height direction, the first end of the locking inclined wall segment is connected with the vertical side wall segment, and the second end is connected with the guide inclined wall; the distance A1 between the first end of the locking inclined wall segment and the first guide side wall, and the distance A2 between the second end of the locking inclined wall segment and the first guide side wall, wherein A2>A1. The first guide side wall and the second guide side wall of each of the two driving blocks form a driving groove therebetween. The knife disc module comprises a knife disc and a driving shaft rotationally connected with the knife disc, and the outer wall of the driving shaft is sequentially provided with a driving protrusion and an elastic member in the height direction, and the elastic member of the driving shaft is used for interference fit in the matching groove of the knife seat. When the driving shaft is assembled into the through hole of the knife seat, under the driving of the self-weight of the knife module, the driving protrusion of the driving shaft is in contact with and slides along the guide inclined wall of the driving block, and the guide inclined wall guides the driving protrusion into the driving groove.

[0006] As an optional implementation, the state of the tool holder assembled to the driving shaft under the driving of the tool module self-weight is a natural placement state of the tool module; in the natural placement state of the tool module, the bottom of the tool holder contacts the elastic member and is blocked by the elastic member; and the shortest height distance between the elastic member and the top wall of the matching groove in the height direction is H4, and the shortest height distance between the bottom end of the first guide side wall and the elastic protrusion is H5, wherein 1.5mm≤H4≤3.5mm and 1.5mm≤H5≤3.5mm. H4=H5.

[0007] As an optional implementation, two driving protrusions are symmetrically arranged on the driving shaft, and one of the driving protrusions is used to be guided by the guide inclined wall of one driving block into one driving groove.

[0008] As an optional implementation, the diameter of the through hole of the tool holder is D1, and the size range of D1 is 6mm≤D1≤8mm; the distance between the mutually faraway outer walls of the two driving protrusions is D2, wherein (D1-1)mm≤D2≤(D1-0.5)mm.

[0009] As an optional implementation, the width of the driving groove itself is L1, and the size range of L1 is 2mm≤L1≤4mm; the width of the driving protrusion itself is L2, and the size range of L2 is 1.2mm≤L2≤2mm.

[0010] As an optional implementation, a matching protrusion is arranged in the matching groove, and the matching protrusion is in interference fit with the elastic member.

[0011] As an optional implementation, the matching groove is arranged with a first groove section and a second groove section along the height direction, and the first groove section is located between the through hole and the second groove section; The second groove section is in the shape of a circular truncated cone, the diameter of the first end of the second groove section is smaller than the diameter of the second end thereof, the diameter of the first groove section is equal to the diameter of the second end of the second groove section, and the second groove section is used to interfere fit with the elastic member.

[0012] As an optional implementation, in the height direction, the height of the vertical side wall section is H1, and the height size of H1 is 3mm≤H1≤5mm; And / or, in the height direction, the height of the locking inclined wall section is H2, and the height size of H2 is 4mm≤H2≤6mm; And / or, in the height direction, the height of the guide inclined wall is H3, and the height size of H3 is 2mm≤H3≤4mm; And / or, in the height direction, the height of the matching protrusion in the matching groove is H6, and the height dimension of H6 is: 1.5mm≤H6≤3.5mm.

[0013] As an optional implementation, the driving shaft comprises a first shaft segment and a second shaft segment which are integrally formed, and the second shaft segment is rotationally connected with the cutter disc part, and the first shaft segment is formed at the end of the second shaft segment; The shaft diameter of the first shaft segment is smaller than that of the second shaft segment, and the circumferential outer side of the first shaft segment is provided with two symmetrically arranged driving protrusions, and the elastic member is a rubber ring and is sleeved on the axial outer side of the second shaft segment.

[0014] In order to achieve the above-mentioned purpose, the application further discloses a food processor comprising the above-mentioned stirring knife assembly.

[0015] Compared with the prior art, the application has the following beneficial effects: The stirring knife assembly of the embodiment is convenient to install and take out; when in use, the user can naturally put the knife seat on the driving shaft, and can manually press or directly start the rotation of the driving shaft to automatically lock, so that the user can use more conveniently; meanwhile, the stirring knife assembly is not easy to jam after use, and can be directly taken out by lifting upward when needed. The whole stirring knife assembly is simple to install and safe and reliable; the running precision is high, and the shaking in the high-speed process is small; meanwhile, the structure is simple, and the manufacturing cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 is a structural schematic diagram of the stirring knife assembly of the embodiment in an exploded state; Figure 2 is a front view of the stirring knife assembly of the embodiment in an exploded state; Figure 3 is a front view of the stirring knife assembly of the embodiment after the knife seat is put into the driving shaft, and the driving protrusion is about to contact with the guide inclined wall of the driving block; Figure 4 is a front view of the stirring knife assembly of the embodiment after the knife seat is put into the driving shaft, and is in a natural state of the knife module; Figure 5 is a front view of the stirring knife assembly of the embodiment after the knife seat is put into the driving shaft, and is in a natural state of the knife module; Figure 6 is Figure 5 is a structural schematic view from the top of the cutter module; Figure 7 is a front view of the cutter seat of a stirring cutter assembly of the present embodiment after the driving shaft is put into the cutter seat, and the driving shaft drives the locking in the natural state of the cutter module; Figure 8 is Figure 7 is a structural schematic view from the top of the cutter module; Figure 9 is a front view of a stirring cutter assembly of the present embodiment in the natural state of the cutter module, and the size about H4 and H5; Figure 10 is a structural schematic view of the cutter module of a stirring cutter assembly of the present embodiment; Figure 11 is another structural schematic view of the cutter module of a stirring cutter assembly of the present embodiment; Figure 12 is a schematic view of the driving protrusion on the driving shaft of a stirring cutter assembly of the present embodiment about the size D2; Figure 13 is a schematic view of the driving protrusion on the driving shaft of a stirring cutter assembly of the present embodiment about the size L2; Figure 14 is a top view of the through hole of the cutter seat of a stirring cutter assembly of the present embodiment about the size D1 and the driving slot about the size L1; Figure 15 is a front view of the cutter module of a stirring cutter assembly of the present embodiment about the sizes H1, H2, H3 and H6; Figure 16 is a structural schematic view of the cutter module of a stirring cutter assembly of the present embodiment; Figure 17 is another structural schematic view of the cutter module of a stirring cutter assembly of the present embodiment; Figure 18 is a front view of the cutter module of a stirring cutter assembly of the present embodiment; Figure 19 is a front view of the cutter module of a stirring cutter assembly of another embodiment of the present application; Fig. 10 - knife module, 11 - knife seat, 111 - matching groove, 1111 - first groove segment, 1112 - second groove segment, 112 - matching protrusion, 113 - through hole, 114 - guide inclined wall, 115 - locking inclined wall segment, 116 - vertical side wall segment, 117 - first guide side wall, 118 - driving block, 119 - driving groove, 12 - knife blade, 20 - cutter module, 21 - driving shaft, 211 - driving protrusion, 212 - first shaft segment, 213 - second shaft segment, 214 - mounting detent, 22 - elastic member, 23 - cutter member. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0019] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0020] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. Those of ordinary skill in the art can understand the specific meaning of these terms in the present application according to the specific circumstances.

[0021] In addition, the terms "mounting", "setting", "provided with", "connected", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components. Those of ordinary skill in the art can understand the specific meaning of the above-mentioned terms in the present application according to the specific circumstances.

[0022] In addition, the terms "first", "second", and the like are used merely to distinguish different devices, elements or components (the specific type and configuration of which can be the same or different), and are not intended to indicate or imply relative importance or significance of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0023] The technical solutions of the present application will be further described below in conjunction with the embodiments and drawings.

[0024] Please refer to Figures 1-19 The embodiment of the present application provides a stirring knife assembly.

[0025] In some embodiments, as Figure 1 and Figure 2 , the stirring knife assembly specifically comprises a knife module 10 and a knife disc module 20, and the knife module 10 and the knife disc module 20 are detachably connected.

[0026] Among them, as Figures 16-18 , the knife module 10 comprises a knife seat 11 and a knife blade 12 fixed on the outer side of the seat body in the circumferential direction, and the knife seat 11 is provided with a through hole 113 in the height direction of the knife seat 11; two driving blocks 118 which are centrally symmetric are protrudingly arranged at the first end in the through hole 113; a matching groove 111 is recessed at the second end in the through hole 113; The bottom of each driving block 118 is provided with a guide inclined wall 114, and among the opposite two side walls, one is a first guide side wall 117, and the other is a second guide side wall, and the first guide side wall 117 is vertically arranged, and the second guide side wall is provided with a vertical side wall segment 116 and a locking inclined wall segment 115 in the height direction, the first end of the locking inclined wall segment 115 is connected with the vertical side wall segment 116 and the second end is connected with the guide inclined wall 114; the locking inclined wall segment 115 is arranged obliquely, and the distance A1 between the first end of the locking inclined wall segment 115 and the first guide side wall 117, and the distance A2 between the second end of the locking inclined wall segment 115 and the first guide side wall 117, wherein A2>A1, as Figure 18 ; The first guide side wall 117 and the second guide side wall between the two driving blocks 118 form a driving groove 119 respectively; Among them, the knife disc module 20 comprises a knife disc piece 23 and a driving shaft 21 rotationally connected with the knife disc piece 23, the outer wall of the driving shaft 21 is provided with a driving protrusion 211 and an elastic member 22, and in the height direction, the driving protrusion 211 and the elastic member 22 are arranged in an up-down manner.

[0027] When the driving shaft 21 is assembled into the through hole 113 of the knife seat 11, under the driving of the self weight of the knife module 10, the driving protrusion 211 of the driving shaft 21 is in contact with the guide inclined wall 114 of the driving block 118 and slides, and the driving protrusion 211 is guided into the driving groove 119 through the guide inclined wall 114, so as to realize the assembly of the knife module 10 and the cutter disc module 20; and after the assembly, the elastic member 22 of the driving shaft 21 is interference-fitted into the matching groove 111 of the knife seat 11.

[0028] It should be noted that the present stirring knife assembly specifically includes two parts, the knife module 10 and the cutter disc module 20. Moreover, the two parts of the knife module 10 and the cutter disc module 20 are detachable, and the detachment direction is directly pulling out the knife module 10 from the top.

[0029] The knife module 10 specifically includes the knife seat 11 and the knife blade 12. The structure of the knife seat 11 can be that the knife seat 11 is provided with a through hole 113 along the height direction thereof, which is the Z direction in the illustrated embodiment; and two driving blocks 118 which are centrally symmetric are arranged at the first end (which can be the upper end in the illustration) in the through hole 113 of the knife seat 11.

[0030] The structure of the driving block 118 can be as shown in Figure 18 The bottom of the driving block 118 is provided with a guide inclined wall 114, one of the opposite two side walls (which can be the left and right side walls in the illustration) of the driving block 118 is a first guide side wall 117, and the other is a second guide side wall; in the illustrated embodiment, the left side wall of the driving block 118 is the first guide side wall 117, and the right side wall of the driving block 118 is the second guide side wall.

[0031] Moreover, the second guide side wall is provided with a vertical side wall segment 116 and a locking inclined wall segment 115 along the height direction, in the illustrated embodiment, the vertical side wall segment 116 is located at the upper side, and the locking inclined wall segment 115 is located at the lower side. The locking inclined wall segment 115 is inclined, which is downward inclined in the illustration, so that the distance A1 between the first end (which can be the upper end in the illustration) of the locking inclined wall segment 115 and the first guide side wall 117, and the distance A2 between the second end (which can be the lower end in the illustration) of the locking inclined wall segment 115 and the first guide side wall 117, wherein A2>A1. Therefore, the driving block 118 as a whole will have a shape similar to that of being narrow at the upper side and wide at the lower side.

[0032] Meanwhile, the two driving blocks 118 are arranged in the knife seat 11 in a central symmetry manner, so that a driving groove 119 is formed between the two driving blocks 118. For example, the driving groove 119 is formed between the first guide sidewall 117 (the left sidewall in the figure) of one of the driving blocks 118 and the second guide sidewall (the right sidewall in the figure) of the other driving block 118. In addition, since the driving blocks 118 have a shape similar to that of the upper narrow and lower wide, the driving groove 119 has a shape opposite to that of the driving blocks 118, i.e., the driving groove 119 has a shape similar to that of the upper wide and lower narrow.

[0033] In addition, the second end (the lower end in the figure) of the through hole 113 of the knife seat 11 is recessed with a matching groove 111, which is used to be in interference fit with the elastic member 22 on the driving shaft 21, so as to improve the tightness and firmness of the connection. It can be seen that the matching groove 111 and the through hole 113 form a stepped structure.

[0034] The knife disc module 20 can specifically include a knife disc 23 and a driving shaft 21. The driving shaft 21 is arranged with a driving protrusion 211 and an elastic member 22 on the outer wall of the driving shaft 21. In the height direction (Z direction in the figure), the driving protrusion 211 and the elastic member 22 are arranged in an up-down manner, i.e., the driving protrusion 211 is located on the upper side of the elastic member 22.

[0035] It should be further explained that the specific assembly process of the stirring knife assembly is as follows: When the knife module 10 and the knife disc module 20 are assembled, the driving shaft 21 can be assembled into the through hole 113 of the knife seat 11, as shown in Figure 2 . Figure 2 is a schematic view before the two are assembled. Under the self-weight driving of the knife module 10, the knife seat 11 moves downward until the driving protrusion 211 of the driving shaft 21 is guided to the driving groove 119 in the through hole 113 of the knife seat 11. Since the guide inclined wall 114 is arranged in an inclined manner, by using the self-weight of the knife module 10 and the inclined surface principle of the guide inclined wall 114, the driving protrusion 211 of the driving shaft 21 slides with the guide inclined wall 114 at the bottom of the driving block 118, so that the driving protrusion 211 of the driving shaft 21 is guided into the driving groove 119 in the through hole 113 of the knife seat 11. Please refer to Figure 3 .

[0036] In the process, the knife seat 11 is rotated and moved downward until the bottom of the knife seat 11 as a whole contacts the elastic piece 22 on the driving shaft 21, at which time the knife seat 11 stops moving downward due to the obstruction of the elastic piece 22. In order to better describe the entire process, the above process is the automatic alignment of the knife module 10, that is, the user only needs to align the through hole 113 of the knife seat 11 with the driving shaft 21, and naturally put it in, so that the above process is automatically implemented. According to the principle of the slope of the guide inclined wall 114, the driving protrusion 211 of the driving shaft 21 is automatically guided into the driving groove 119 in the through hole 113 of the knife seat 11, until the knife seat 11 is blocked by the elastic piece 22 on the driving shaft 21, and the knife seat 11 stops moving downward. At this time, the state is the natural putting-in state of the knife module 10, which can be referred to as Figure 4 .

[0037] Then, at this time, the user has two different operation modes, which can continue to drive the knife seat 11 to move downward, so that the elastic piece 22 on the driving shaft 21 is interference-fitted in the matching groove 111 of the knife seat 11.

[0038] One of the modes is manual pressing, that is, the user manually presses the knife seat 11 to drive the knife seat 11 to move downward, so that the elastic piece 22 on the driving shaft 21 is interference-fitted in the matching groove 111 of the knife seat 11, which can be referred to as Figure 5 .

[0039] Another mode is that the driving shaft 21 directly drives rotation, that is, in the case of a food processor, the user can directly start the machine, and the driving shaft 21 will directly rotate, and the rotation direction of the driving shaft 21 is the direction in which the driving protrusion 211 moves to the second guide side wall. Under such a setting, the driving protrusion 211 moves to the second guide side wall, and the locking inclined wall section 115 of the second guide side wall moves in the direction of the vertical side wall section 116 due to the rotational driving force of the driving shaft 21, plus the slope principle of the locking inclined wall section 115, which makes the driving protrusion 211 move in the direction of the vertical side wall section 116, that is, makes the knife seat 11 continue to move downward, so that the elastic piece 22 on the driving shaft 21 is interference-fitted in the matching groove 111 of the knife seat 11, which can be referred to as Figure 7 .

[0040] It should be noted that the driving protrusion 211 slides from the locking inclined wall section 115 to the vertical side wall section 116, and then the driving protrusion 211 abuts against the vertical side wall section 116, so that the driving shaft 21 can drive the knife seat 11 and the blade 12 to rotate synchronously to process food materials.

[0041] When the food processor finishes work and needs to take out the knife module 10 for cleaning, at this time, the user only needs to hold the knife seat 11 and lift it upward, so that the knife module 10 can be taken out.

[0042] It should be noted that when the knife seat 11 is lifted upward, the driving protrusion 211 can be in contact with the locking inclined wall section 115 of the second guide side wall, but due to the existence of the inclined surface principle, it will not become a resistance to the upward lifting of the knife seat 11, at this time, the driving shaft 21 will rotate by itself, and the driving protrusion 211 will slide on the locking inclined wall section 115 until the driving protrusion 211 is separated from the driving groove 119, so as to realize the taking out of the knife module 10.

[0043] It can be known that the stirring knife assembly of the embodiment is convenient to install and take out, and when in use, the user can naturally put the knife seat 11 on the driving shaft 21, and can manually press in or directly start the rotation of the driving shaft 21 to automatically lock, so that the user uses more conveniently; meanwhile, it is not easy to be stuck after use, and can be directly lifted upward for taking out when needed.

[0044] Furthermore, the whole stirring knife assembly is simple to install and safe and reliable; and has high running precision and small shaking in high-speed process; meanwhile, the structure is simple and the manufacturing cost is low.

[0045] In some embodiments, reference can be made to Figure 9 In the state of the knife seat 11 assembled to the driving shaft 21 under the driving of the self-weight of the knife module 10, the knife module 10 is in a natural putting state; in the natural putting state of the knife module 10, the bottom of the knife seat 11 is in contact with the elastic member 22 and is blocked by the elastic member 22; and the shortest height distance between the elastic member 22 and the top wall in the height direction of the matching groove 111 is H4, and the shortest height distance between the bottom end of the first guide side wall 117 and the elastic protrusion is H5, wherein 1.5mm≤H4≤3.5mm and 1.5mm≤H5≤3.5mm.

[0046] It should be noted that after the natural putting of the knife module 10, the natural putting state of the knife module 10 is formed, in which state the driving protrusion 211 of the driving shaft 21 has entered the driving groove 119, at this time, the entering distance of the driving protrusion 211 is H5, i.e. the shortest height distance between the bottom end of the first guide side wall 117 and the elastic protrusion, and the range of H5 can be 1.5mm≤H4≤3.5mm. Furthermore, the shortest height distance between the elastic member 22 and the top wall in the height direction of the matching groove 111 is H4, which is the height moving path distance of the elastic member 22 in the matching groove 111.

[0047] The design of the natural insertion state, combined with the size optimization of H4 and H5, allows the tool module 10 to be initially assembled without complex alignment or forced pressing. After the tool module 10 is inserted by gravity, the driving protrusion 211 can naturally enter the driving groove 119, and the bottom of the tool holder 11 is blocked by the elastic member 22, which can achieve initial positioning. This design reduces the requirement for manual alignment accuracy during assembly, reduces the operation difficulty, improves the assembly efficiency, and is especially suitable for batch production or rapid assembly scenarios in daily maintenance.

[0048] Moreover, the state in which the bottom of the tool holder 11 is blocked by the elastic member 22, combined with the size constraints of H4 and H5, can form double positioning of the assembly position of the tool module 10: on the one hand, the cooperation of the driving protrusion 211 and the driving groove 119 is limited in the radial position by H5; on the other hand, the blocking action of the elastic member 22 is limited in the axial height by the stroke boundary of H4. The combination of the two can ensure the relative position of the tool module 10 and the driving shaft 21, the cooperation groove 111 and other structures, providing a stable basic positioning for subsequent locking or working processes.

[0049] For example, since the user can continue to drive the tool holder 11 to move downward by two different operation modes, the elastic member 22 on the driving shaft 21 can be interference-fitted in the cooperation groove 111 of the tool holder 11. The second mode, i.e., the driving shaft 21 directly drives rotation, requires the driving protrusion 211 to be on the locking inclined wall section 115, so that the driving protrusion 211 can be guaranteed to be on the locking inclined wall section 115 through the size optimization of H4 and H5, and thus the automatic locking effect can be achieved by using the mode of directly driving rotation of the driving shaft 21.

[0050] In some embodiments, the shortest height distance H4 between the elastic member 22 and the top wall in the height direction of the cooperation groove 111 can be 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, or 3.5 mm. Of course, in other embodiments, the shortest height distance H4 between the elastic member 22 and the top wall in the height direction of the cooperation groove 111 can also be other sizes within the range of 1.5 mm≤H4≤3.5 mm.

[0051] In some embodiments, the shortest height distance H5 between the bottom end of the first guide sidewall 117 and the elastic protrusion may be 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, or 3.5 mm. In other embodiments, the shortest height distance H5 between the bottom end of the first guide sidewall 117 and the elastic protrusion may also be another size within the range of 1.5 mm ≤ H5 ≤ 3.5 mm.

[0052] In some embodiments, H4 = H5. The equal dimensions of H4 and H5 can reduce the number of independent parameters in the design, allowing key dimensions such as the stroke of the elastic member 22, the length of the driving protrusion 211, and the depth of the mating groove 111 to form a correlated design. In manufacturing, this correlation can simplify tolerance allocation. For example, there is no need to control the accuracy of two independent dimensions separately. The consistency of H4 and H5 can be ensured through a unified processing benchmark or testing standard, reducing the risk of assembly defects caused by dimensional deviations. Furthermore, the processing accuracy requirements for components are easier to achieve, which is particularly suitable for standardized control in mass production, reducing the accumulation of production errors caused by complex parameters.

[0053] In some embodiments, two symmetrically arranged driving protrusions 211 are provided on the driving shaft 21 , and one driving protrusion 211 is used to be guided into one driving groove 119 by one guiding inclined wall 114 of one driving block 118 .

[0054] It should be noted that, since two drive blocks 118 are disposed within the through hole 113 of the blade holder 11, two drive slots 119 are formed within the through hole 113 of the blade holder 11. To this end, two symmetrical drive protrusions 211 are provided on the drive shaft 21, so that the number of drive protrusions 211 corresponds. Therefore, the symmetrical arrangement of the two drive protrusions 211, in conjunction with the corresponding drive slots 119, allows the torque transmitted by the drive shaft 21 to be evenly distributed to the blade holder 11 through the bilaterally symmetrical structure, thereby reducing deformation or wear of the blade holder 11 and the drive shaft 21 due to uneven force, thereby extending the service life of the overall structure.

[0055] In some embodiments, see Figure 12 and Figure 14 The diameter of the through hole 113 of the tool holder 11 is D1, and the size range of D1 is: 6mm≤D1≤8mm; the distance between the outer walls of the two driving protrusions 211 that are away from each other is set to D2, wherein, (D1-1)mm≤D2≤(D1-0.5)mm.

[0056] It should be noted that the diameter of the through hole 113 of the tool holder 11 is set in the range of 6mm≤D1≤8mm. When assembling, the tool holder 11 needs to be assembled into the drive shaft 21 through the through hole 113. In addition, the drive shaft 21 has two symmetrically arranged drive protrusions 211, so the longest distance between the two drive protrusions 211, i.e. D2, should be less than D1, otherwise the assembly cannot be completed. Therefore, the applicant has constructed a size relationship of (D1-1)mm≤D2≤(D1-0.5)mm through repeated tests.

[0057] Therefore, this size relationship avoids the assembly jamming or installation problem caused by the excessive distance between the drive protrusions 211 from the source, making the assembly process of the tool holder 11 and the drive shaft 21 more smooth and efficient, and reducing the difficulty of assembly operation. Moreover, the difference of 1mm to 0.5mm is not randomly set, but is the optimal interval verified through repeated tests. This gap not only avoids the problem of excessive assembly and large transmission gap caused by too small D2, but also prevents the situation of too tight fit and increased running resistance caused by D2 close to D1. By precisely controlling the fit clearance, the positioning of the tool holder 11 on the drive shaft 21 is more firm, thereby ensuring the machining precision and running stability of the tool, and reducing the equipment loss or product quality fluctuation caused by assembly error.

[0058] In some embodiments, the size of D1 can be 6mm, 7mm or 8mm. Alternatively, the size of D1 can also be other sizes within the range of 6mm≤D1≤8mm.

[0059] In some embodiments, the width of the drive groove 119 can be 2mm, 2.5mm, 3mm, 3.5mm, 4mm or 4.5mm. Figure 13 Figure 14 In some embodiments, the width of the drive protrusion 211 can be 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm or 2mm.

[0060] It should be noted that since the drive protrusion 211 is guided into the drive groove 119, the width of the drive protrusion 211 needs to be able to smoothly and smoothly enter the drive groove 119, and the width of the drive protrusion 211 itself should be at least equal to or less than the width of the drive groove 119 itself, otherwise it cannot be guided into the drive groove 119.

[0061] ​Therefore, explicitly specifying that the width L2 of the drive protrusion 211 is at least equal to or less than the width L1 of the drive slot 119 fundamentally avoids assembly jams or installation problems caused by size mismatch. When the drive protrusion 211 enters the drive slot 119, the width L2 of 1.2mm-2mm forms a natural fit with the width L1 of 2mm-4mm. This ensures that the protrusion fits smoothly into the slot even with slight machining errors, significantly reducing assembly difficulty and improving efficiency.

[0062] The size of L1 may be 2 mm, 3 mm, or 4 mm, or may be other sizes within the range of 2 mm ≤ L1 ≤ 4 mm.

[0063] The size of L1 may be 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, or 2 mm. Alternatively, the size of L1 may be another size within the range of 1.2 mm ≤ L2 ≤ 2 mm.

[0064] In some embodiments, a mating protrusion 112 is provided within the mating groove 111, creating an interference fit between the mating protrusion 112 and the elastic member 22. This arrangement, leveraging the interference fit between the mating protrusion 112 and the elastic member 22, allows for a secure connection without the need for additional fasteners (such as bolts or snaps), reducing the number of parts and assembly steps. Furthermore, the interference fit makes the assembly process easier to control. By precisely matching the preset protrusion dimensions with the elastic deformation of the elastic member 22, positioning and securing can be completed quickly, reducing assembly difficulty and manual errors.

[0065] In some other embodiments, in addition to utilizing the matching protrusion 112 to achieve interference fit with the elastic member 22 , the shape and structure of the matching groove 111 itself may also be improved.

[0066] For example, you can participate Figure 19 The mating groove 111 is arranged with a first groove section 1111 and a second groove section 1112 along the height direction. The first groove section 1111 is located between the through hole 113 and the second groove section 1112; the second groove section 1112 is in a truncated cone shape, and the diameter of the first end of the second groove section 1112 is smaller than the diameter of its own second end. The diameter of the first groove section 1111 is equal to the diameter of the second end of the second groove section 1112. The second groove section 1112 is used to interference fit with the elastic member 22.

[0067] It should be noted that when the elastic member 22 enters the matching groove 111, it will first contact the second groove section 1112. Due to the external force, the elastic member 22 will be driven to transition from the second groove section 1112 to the first groove section 1111. Since the second groove section 1112 is in the shape of a circular truncated cone, as shown in the upper narrow lower wide shape in the figure, the first groove section 1111 will form a clamping structure relative to the second groove section 1112 to clamp the elastic member 22 in the first groove section 1111 to achieve the assembly of the two.

[0068] Therefore, since the diameter of the first groove section 1111 is consistent with the large end diameter of the second groove section 1112, and the second groove section 1112 is in a gradually shrinking shape as a whole, when the elastic member 22 transitions from the second groove section 1112 to the first groove section 1111, the first groove section 1111 forms a radial size "step" clamping structure relative to the second groove section 1112. The elastic member 22 will tightly fit the inner wall of the first groove section 1111 under the action of its own elastic tension, and the circular truncated cone-shaped second groove section 1112 can prevent the elastic member 22 from being pulled out in the opposite direction, effectively avoiding the problem of loosening or falling off due to vibration, impact and other working conditions after assembly, and achieving stable connection of the elastic member 22 and the matching groove 111.

[0069] In some embodiments, reference can be made to Figure 15 In the height direction, the height of the vertical side wall section 116 is H1, and the height dimension of H1 is 3mm≤H1≤5mm. For example, the height H1 of the vertical side wall section 116 can be 3mm, 4mm or 5mm. Of course, in other embodiments, the height H1 of the vertical side wall section 116 can also be other height dimensions within the range of 3mm≤H1≤5mm.

[0070] In some embodiments, reference can be made to Figure 15 In the height direction, the height of the locking inclined wall section 115 is H2, and the height dimension of H2 is 4mm≤H2≤6mm. For example, the height H2 of the locking inclined wall section 115 can be 4mm, 5mm or 6mm. Of course, in other embodiments, the height H2 of the locking inclined wall section 115 can also be other height dimensions within the range of 4mm≤H2≤6mm.

[0071] In some embodiments, reference can be made to Figure 15 In the height direction, the height of the guiding inclined wall 114 is H3, and the height dimension of H3 is 2mm≤H3≤4mm. For example, the height H3 of the guiding inclined wall 114 can be 2mm, 3mm or 4mm. Of course, in other embodiments, the height H3 of the guiding inclined wall 114 can also be other height dimensions within the range of 2mm≤H3≤4mm.

[0072] In some embodiments, reference can be made to Figure 15In the height direction, the height of the matching protrusion 112 in the matching groove 111 is H6, and the height dimension of H6 is: 1.5mm≤H6≤3.5mm. For example, the height H6 of the matching protrusion 112 in the matching groove 111 can be 1.5mm, 2mm, 2.5mm, 3mm or 3.5mm. Of course, in some other embodiments, the height H6 of the matching protrusion 112 in the matching groove 111 can also be other height dimensions in the range of 1.5mm≤H6≤3.5mm.

[0073] It should be noted here that if the structure of the matching protrusion 112 in the matching groove 111 is adopted, when the tool module 10 is naturally placed, a naturally placed state of the tool module 10 is formed, in which the driving protrusion 211 of the driving shaft 21 has entered the driving groove 119, and at this time, the matching protrusion 112 abuts against the elastic member 22, and the tool seat 11 is blocked by the elastic member 22 and cannot continue to move downward. Therefore, the shortest height distance H4 between the elastic member 22 and the top wall of the matching groove 111 in the height direction can be approximately equal to the height H6 of the matching protrusion 112 in the matching groove 111.

[0074] It should be further noted that from the smoothness of assembly guidance, the guide inclined wall 114H3 is set in a lower height range of 2mm≤H3≤4mm, which can preferentially contact the driving protrusion 211 at the initial stage of assembly. This design can quickly guide by using the inclination angle of the inclined wall, and avoid assembly deviation or jamming caused by excessive height. At the same time, the height H3 is lower than the locking inclined wall section 115H2 (4mm≤H2≤6mm), forming a progressive assembly logic of “first guiding and then self-locking”, so that the assembly process is more orderly.

[0075] In terms of locking reliability, the height range of the locking inclined wall section 115H2 (4mm≤H2≤6mm) not only ensures sufficient contact area to provide stable locking force, but also avoids material waste or assembly resistance surge caused by excessive height. The vertical side wall section 116H1 (3mm≤H1≤5mm) forms a reasonable height difference with H2, and the vertical structure can be used as the support basis of the locking inclined wall, enhancing the structural rigidity of the locking part to prevent deformation or loosening in long-term use.

[0076] At the same time, the heights of H1, H2, H3 and H6 are matched with each other, so that the load distribution of each stress part is more uniform, and the anti-fatigue performance of the overall structure is improved.

[0077] In manufacturing and fault tolerance, the interval of each size provides a reasonable tolerance range for production manufacturing. Different processing techniques have certain size deviations, and the ranges of 3mm≤H1≤5mm and 4mm≤H2≤6mm can reduce the extreme requirements for processing precision and reduce the scrap rate. In addition, the size interval also provides a fault tolerance space for individual differences in the assembly process. Even if the size of a certain component is close to the edge of the interval, it can still form an effective fit with other components to ensure the interchangeability and universality of the product.

[0078] In some embodiments, reference can be made to Figure 10 and Figure 11 For the structure of the drive shaft 21, the drive shaft 21 includes a first shaft section 212 and a second shaft section 213 formed integrally, the second shaft section 213 is rotationally connected with the cutter disc part 23, and the first shaft section 212 is formed at the end of the second shaft section 213; the shaft diameter of the first shaft section 212 is smaller than that of the second shaft section 213, and the circumferential outer side of the first shaft section 212 is provided with two symmetrically arranged drive protrusions 211, and the elastic member 22 is a rubber ring and is sleeved on the axial outer side of the second shaft section 213.

[0079] Therefore, the drive shaft 21 adopts the structure of the first shaft section 212 and the second shaft section 213 formed integrally, effectively avoiding the problem of power loss caused by the assembly gap of the traditional split structure, ensuring efficient transmission of power from the first shaft section 212 to the second shaft section 213, and reducing energy loss.

[0080] Specifically, the second shaft section 213 can be provided with a mounting stop 214 for assembling the elastic member 22, so as to facilitate the assembly and positioning of the elastic member 22 and improve the assembly efficiency.

[0081] The embodiment of the application also provides a food processor, which includes the stirring knife assembly of any one of the above embodiments. In addition, the food processor can be a wall-breaking machine, a soybean milk machine, or a fruit juice machine, etc.

[0082] The technical means disclosed in the present application is not limited to the technical means disclosed in the above embodiments, but also includes the technical solutions composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principle of the present application, some improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the present application.

Claims

1. A stirring blade assembly, characterized in that: It comprises a knife module (10) and a knife disc module (20), wherein the knife module (10) and the knife disc module (20) are detachably connected; The knife module (10) includes a knife seat (11) and a blade (12) fixed to the seat body. The knife seat (11) is provided with a through hole (113) along its own height direction; two driving blocks (118) are protruding from the first end of the through hole (113) and are centrally symmetrical; and a matching groove (111) is recessed at the second end of the through hole (113); Each driving block (118) is provided with a guide inclined wall (114) at the bottom, and two opposite side walls, one of which is a first guide side wall (117) and the other is a second guide side wall; the first guide side wall (117) is vertically provided, and the second guide side wall is provided with a vertical side wall section (116) and a locking inclined wall section (115) along the height direction, the first end of the locking inclined wall section (115) is connected to the vertical side wall section (116) and the second end is connected to the guide inclined wall (114); the distance A1 between the first end of the locking inclined wall section (115) and the first guide side wall (117) and the distance A2 between the second end of the locking inclined wall section (115) and the first guide side wall (117) are, wherein A2>A1; A driving groove (119) is formed between the first guide side wall (117) and the second guide side wall of each of the two driving blocks (118); The cutter head module (20) comprises a cutter head component (23) and a drive shaft (21) rotatably connected to the cutter head component (23); a drive protrusion (211) and an elastic component (22) are sequentially provided on the outer wall of the drive shaft (21) in a height direction; and the elastic component (22) of the drive shaft (21) is used for interference fitting in the matching groove (111) of the cutter seat (11); When the drive shaft (21) is assembled into the through hole (113) of the knife seat (11), driven by the weight of the knife module (10), the drive protrusion (211) of the drive shaft (21) contacts and slides with the guide inclined wall (114) of the drive block (118), and the drive protrusion (211) is guided into the drive groove (119) by the guide inclined wall (114).

2. A stirring blade assembly according to claim 1, characterized in that: The state after the knife seat (11) is assembled to the drive shaft (21) under the drive of the knife module (10) is that the knife module (10) is naturally placed in the state; in the naturally placed state of the knife module (10), the bottom of the knife seat (11) contacts the elastic member (22) and is blocked by the elastic member (22); and, the shortest height distance between the elastic member (22) and the top wall of the matching groove (111) in the height direction is set to H4, and the shortest height distance between the bottom end of the first guide side wall (117) and the elastic protrusion is set to H5, wherein 1.5mm≤H4≤3.5mm, 1.5mm≤H5≤3.5mm; Among them, H4=H5.

3. The stirring blade assembly according to claim 1, characterized in that: Two symmetrically arranged driving protrusions (211) are provided on the driving shaft (21), and one driving protrusion (211) is used to be guided into a driving groove (119) by a guide inclined wall (114) of a driving block (118).

4. The stirring blade assembly according to claim 3, characterized in that: The diameter of the through hole (113) of the knife seat (11) is D1, and the size range of D1 is: 6mm≤D1≤8mm; the distance between the outer walls of the two driving protrusions (211) away from each other is D2, wherein (D1-1)mm≤D2≤(D1-0.5)mm.

5. The stirring blade assembly according to claim 1, characterized in that: Assume that the width of the driving groove (119) itself is L1, and the size range of L1 is: 2mm≤L1≤4mm; assume that the width of the driving protrusion (211) itself is L2, and the size range of L2 is: 1.2mm≤L2≤2mm.

6. A stirring blade assembly according to any one of claims 1 to 5, characterized in that: A matching protrusion (112) is provided in the matching groove (111), and an interference fit is performed between the matching protrusion (112) and the elastic member (22).

7. A stirring blade assembly according to any one of claims 1 to 5, characterized in that: The matching groove (111) is provided with a first groove section (1111) and a second groove section (1112) arranged along the height direction, and the first groove section (1111) is located between the through hole (113) and the second groove section (1112); The second groove section (1112) is in a truncated cone shape. The diameter of the first end of the second groove section (1112) is smaller than the diameter of its second end. The diameter of the first groove section (1111) is equal to the diameter of the second end of the second groove section (1112). The second groove section (1112) is used for interference fit with the elastic member (22).

8. The stirring blade assembly according to any one of claims 1 to 5, characterized in that: In the height direction, the height of the vertical side wall section (116) is H1, and the height dimension of H1 is: 3mm≤H1≤5mm; And / or, in the height direction, the height of the locking inclined wall section (115) is set to H2, and the height dimension of H2 is: 4mm≤H2≤6mm; And / or, in the height direction, the height of the guide inclined wall (114) is set to H3, and the height dimension of H3 is: 2mm≤H3≤4mm; And / or, in the height direction, the height of the matching protrusion (112) in the matching groove (111) is set to H6, and the height dimension of H6 is: 1.5mm≤H6≤3.5mm.

9. The stirring blade assembly according to any one of claims 1 to 5, characterized in that: The drive shaft (21) includes an integrally formed first shaft section (212) and a second shaft section (213), the second shaft section (213) being rotatably connected to the cutter head (23), and the first shaft section (212) being formed at the end of the second shaft section (213); The shaft diameter of the first shaft section (212) is smaller than the shaft diameter of the second shaft section (213); two symmetrically arranged driving protrusions (211) are arranged on the circumferential outer side of the first shaft section (212); and the elastic member (22) is a rubber ring and is sleeved on the axial outer side of the second shaft section (213).

10. A food processor, characterized in that The invention comprises a stirring blade assembly according to any one of claims 1 to 9.

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