Knife assembly and cooking machine

Abstract

The present invention provides a knife assembly, including a self-locking seat, a knife shaft and a slider, wherein: the knife shaft is arranged on the self-locking seat, and the slider is distributed around the knife shaft; a rotating bracket is rotatably mounted on the self-locking seat, and the rotating bracket is configured to be able to drive the slider to press against or disengage from the knife shaft when it rotates relative to the self-locking seat. The present invention enables the slider to form two states of locking and unlocking the knife shaft by cooperating with the rotating bracket, so that the user can remove and lock the knife shaft by operating the rotating bracket, simplifying the disassembly steps of the knife shaft, reducing the difficulty of disassembly of the knife shaft, and having strong practicality. The present invention also provides a food processor, including a cup body, and the above-mentioned knife assembly, wherein: the self-locking seat is arranged at the bottom of the cup body; one end of the knife shaft extends into the cup body. The knife shaft of the knife assembly of the food processor is easy to disassemble and assemble, and is convenient for cleaning and maintenance of the food processor.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a knife assembly and a food processor. Background Art

[0002] In traditional food processors, the knife assembly is fixed in such a way that the knife shaft passes through the bottom of the cup body, and then a nut or a nut-like spiral structure is used to fix the extended knife shaft on the outside of the cup bottom, while the blade of the knife assembly is inside the cup body. This fixing structure makes it difficult for users to disassemble the assembly, and usually requires professionals to use professional tools to disassemble it. However, in the daily use of the food processor, the processed mixture is easy to deposit and adhere to the blade and the bottom of the cup body. Since the knife shaft is difficult to disassemble, it makes it more difficult to clean the cup body, and there is even a risk of scratching fingers with the blade during cleaning. Summary of the invention

[0003] In view of the shortcomings of the prior art, the first object of the present invention is to provide a knife assembly, the knife shaft of which is easy to disassemble and assemble and convenient to use;

[0004] Another object of the present invention is to provide a food processor, wherein the knife shaft of the knife assembly is easy to disassemble and assemble, thereby facilitating the cleaning and maintenance of the food processor.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A knife assembly includes a self-locking seat, a knife shaft and a slider, wherein: the knife shaft is arranged on the self-locking seat, and the slider is distributed around the knife shaft; a rotating bracket is rotatably mounted on the self-locking seat, and the rotating bracket is configured to be able to drive the slider to press against or disengage from the knife shaft when it rotates relative to the self-locking seat. Here, the slider forms two states of locking and unlocking the knife shaft by cooperating with the rotating bracket, so that the user can remove and lock the knife shaft by operating the rotating bracket, simplifying the disassembly steps of the knife shaft, reducing the difficulty of disassembly of the knife shaft, and having strong practicality.

[0007] According to a preferred embodiment, the slider is slidably connected to the self-locking seat, and a slide post is arranged on the slider; a guide groove is provided on the rotating bracket in a manner of spirally extending along the axial direction of the rotating shaft rotating relative to the self-locking seat, and the slide post extends into the guide groove; when the rotating bracket rotates, the slider can press against or disengage from the knife shaft in a manner of sliding the slide post in the guide groove. The guide groove here extends spirally, so that when the rotating bracket rotates relative to the self-locking seat, the guide groove can cooperate with the slide post to drive the slider to slide axially on the rotating shaft of the rotating bracket, so as to achieve the slider pressing against or disengaging and unlocking the knife shaft, with a simple structure and high integration.

[0008] According to a preferred embodiment, the two sliders are symmetrically distributed on both sides of the knife shaft. The two sliders here can form a clamp for the knife shaft to ensure the coaxiality of the knife shaft after locking.

[0009] According to a preferred embodiment, the rotating bracket is provided with two guide grooves corresponding to the two sliders one by one; when the rotating bracket rotates relative to the self-locking seat, the two sliders can approach or move away from each other in the manner that their respective slide posts slide in the corresponding guide grooves. Here, the two sliders can be driven simultaneously by rotating one rotating bracket, which simplifies the disassembly and installation steps of the knife shaft and facilitates operation.

[0010] According to a preferred embodiment, the lower end surface of the self-locking seat is provided with an assembly cavity, the bottom of the assembly cavity is provided with a slide groove, the slider is slidably embedded in the slide groove; the knife shaft passes through the bottom of the slide groove. The slide groove here guides and limits the slider, and by installing the rotating bracket in the assembly cavity, the knife shaft can be stored in the assembly cavity after being fixed and locked, and the structure layout is compact.

[0011] According to a preferred embodiment, a fixing frame is embedded in the assembly cavity, and the rotating bracket is rotatably mounted on the fixing frame; a clearance groove is penetrated on the fixing frame, and the slider penetrates the clearance groove and is connected to the rotating bracket. Here, the fixing frame cooperates with the slide groove to limit the slider, and the slider can be removed by removing the fixing frame, which is convenient for assembly and maintenance of the slider.

[0012] According to a preferred embodiment, the guide groove includes an unlocking section and a locking section that are connected to each other, and the width of the unlocking section is greater than the width of the locking section; when the slide column moves into the locking section, the slider abuts against the knife shaft. The width of the unlocking section is greater than the diameter of the slide column, so that a sliding gap can be generated between the unlocking section and the slide column, so that the slide column can achieve the anti-falling function without affecting the removal of the knife shaft.

[0013] According to a preferred embodiment, the guide groove includes a first working surface and a second working surface that are arranged opposite to each other, the first working surface faces the knife shaft; the first working surface includes a spiral guide surface and a locking surface; the second working surface includes an anti-slip surface and a locking surface; the spiral guide surface and the anti-slip surface are arranged opposite to each other and together constitute an unlocking section; the locking surface and the locking surface are arranged opposite to each other and together constitute a locking section. When the rotating bracket is in an open state, the slide column abuts against the anti-slip surface, and at this time, the depth of the slider extending into the locking groove can prevent the knife shaft from falling off due to its own weight without affecting its disassembly; when the rotating bracket is in a closed state, the slide column abuts against the locking surface, and at this time, the depth of the slider extending into the locking groove can lock the knife shaft.

[0014] According to a preferred embodiment, an elastic member is further included, which acts on the slider to make the slider press against the second working surface. The elastic member applies a pre-tightening force to the slider, so that the slider can better prevent the knife shaft from falling off due to its own weight when the rotating bracket is in the open state.

[0015] A food processor comprises a cup body and any one of the above-mentioned knife assemblies, wherein: the self-locking seat is arranged on the cup body; one end of the knife shaft extends into the cup body. The knife shaft of the food processor is easy to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a food processor provided in Embodiment 1 of the present invention;

[0018] Figure 2 This is a bottom view of the food processor provided in Embodiment 1 of the present invention;

[0019] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of the AA section when the middle rotating bracket is in the open state;

[0020] Figure 4 A schematic diagram of the structure of the rotating bracket provided in Embodiment 1 of the present invention in an open state and with the knife shaft not assembled;

[0021] Figure 5 A schematic diagram of the structure of the rotating bracket provided in Example 1 of the present invention in an open state and after the knife shaft is assembled;

[0022] Figure 6 A schematic diagram of the structure of the rotating bracket provided in Example 1 of the present invention in a closed state and after the knife shaft is assembled;

[0023] Figure 7 A schematic diagram of the three-dimensional structure of the self-locking seat provided in Example 1 of the present invention;

[0024] Figure 8 A schematic diagram of the three-dimensional structure of a fixing frame provided in Example 1 of the present invention;

[0025] Fig. 9 A schematic diagram of the three-dimensional structure of the rotating bracket provided in Example 1 of the present invention;

[0026] Fig.10A schematic front view of the structure of the rotating bracket provided in Example 1 of the present invention;

[0027] Fig.11 A schematic diagram of the structure of the rotating bracket provided in Embodiment 2 of the present invention in an open state and with the knife shaft not assembled;

[0028] Fig.12 for Fig.11 A partial enlarged schematic diagram of the structure at A in the middle;

[0029] Fig.13 A schematic diagram of the structure of the rotating bracket provided in Embodiment 2 of the present invention in an open state and after the knife shaft is assembled;

[0030] Fig.14 for Fig.13 A partial enlarged schematic diagram of the structure at B in the middle;

[0031] Fig.15 A schematic diagram of the structure of the rotating bracket provided in Example 2 of the present invention in a closed state and after the knife shaft is assembled;

[0032] Fig.16 for Fig.15 A partial enlarged schematic diagram of the structure at point C in the middle.

[0033] Icon: 1-cup body, 2-knife shaft, 21-locking groove, 3-self-locking seat, 31-fixed bracket, 311-gap groove, 312-pre-installed hole, 32-rotating bracket, 321-working part, 3211-guide groove, 32111-locking surface, 32112-spiral guide surface, 32113-anti-slip surface, 32114-locking surface, 3212-limiting groove, 33-slider, 331-elastic part, 332-sliding column, 34-sliding groove, 341-shaft groove, 35-gap hole, 36-assembly cavity. DETAILED DESCRIPTION

[0034] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0037] Example 1

[0038] Please refer to Figures 1 to 10 A knife assembly includes a self-locking seat 3, a knife shaft 2 and a slider 33, wherein: the knife shaft 2 is arranged on the self-locking seat 3, and the slider 33 is distributed around the knife shaft 2; a rotating bracket 32 ​​is rotatably mounted on the self-locking seat 3, and the rotating bracket 32 ​​is configured to be able to drive the slider 33 to press against or disengage from the knife shaft 2 when it rotates relative to the self-locking seat 3. The knife assembly provided in this embodiment is applied to a food processor, and the knife assembly is easy to disassemble the knife shaft 2 after being assembled in the food processor, and is convenient to use. Further, the slider 33 is slidably connected to the self-locking seat 3, and a slide post 332 is arranged on the slider 33; a guide groove 3211 is opened on the rotating bracket 32 ​​in a manner of spirally extending along the axial direction of the rotating shaft rotating relative to the self-locking seat 3, and the slide post 332 extends into the guide groove 3211; when the rotating bracket 32 ​​rotates, the slider 33 can press against or disengage from the knife shaft 2 in a manner that the slide post 332 slides in the guide groove 3211.

[0039] like Figure 4 , Figure 5 and Figure 6 As shown, there are three states of the structure before the knife shaft 2 is installed, after the knife shaft 2 is installed and not fixed, and after the knife shaft 2 is installed and fixed. The guide groove 3211 here extends spirally, so that when the rotating bracket 32 ​​rotates relative to the self-locking seat 3, the guide groove 3211 can cooperate with the slide post 332 to drive the slider 33 to slide axially on the rotating shaft of the rotating bracket 32, so as to achieve the slider 33 to fix or release and unlock the knife shaft 2. In this embodiment, the slide post 332 is slidably fitted with the inner side of the guide groove 3211. Preferably, the axial direction of the rotating axis of the rotating bracket 32 ​​is perpendicular to the axial direction of the knife shaft 2 and is radial to the knife shaft 2, so that it is firmly fixed and the position of the fixed knife shaft 2 is more stable.

[0040] Furthermore, in order to improve the coaxiality of the knife shaft 2 after installation, in other embodiments, the number of sliders 33 here can be multiple, and the multiple sliders 33 are evenly distributed on the circumference of the knife shaft 2. For example, when there are three sliders 33, the three sliders 33 all slide along the radial direction of the knife shaft 2, and the angle between the sliding directions of two adjacent sliders 33 is 120°. The multiple sliders 33 here correspond to multiple rotating brackets 32. The rotating brackets 32 correspond to the sliders 33 one by one. When in use, it is necessary to drive all the sliders 33 to disengage from the knife shaft 2 by rotating all the rotating brackets 32 to achieve the disassembly of the knife shaft 2. Therefore, in this embodiment, the preferred number of sliders 33 is two, and the two sliders 33 are symmetrically distributed on both sides of the knife shaft 2.

[0041] In order to improve the integration of the device and improve the working efficiency, such as Fig. 9 and Fig.10 As shown, the rotating bracket 32 ​​is provided with two guide grooves 3211 corresponding to the two sliders 33; when the rotating bracket 32 ​​rotates relative to the self-locking seat 3, the two sliders 33 can approach or move away from each other in the manner that their respective slide posts 332 slide in the corresponding guide grooves 3211. When in use, the two sliders 33 can be driven simultaneously by rotating one rotating bracket 32, which simplifies the disassembly and installation steps of the knife shaft 2 and facilitates operation. Further, the lower end surface of the self-locking seat 3 is provided with an assembly cavity 36, and a slide groove 34 is provided at the bottom of the assembly cavity 36, and the slider 33 is slidably embedded in the slide groove 34; the knife shaft 2 passes through the bottom of the slide groove 34. A fixed frame 31 is embedded in the assembly cavity 36, and the rotating bracket 32 ​​is rotatably installed on the fixed frame 31; a clearance groove 311 is provided on the fixed frame 31, and the slider 33 passes through the clearance groove 311 and is connected to the rotating bracket 32. The rotating bracket 32 ​​is distributed in the assembly cavity 36 and can be stored in the assembly cavity 36 after the knife shaft 2 is fixed and locked, and the structure layout is compact. Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, a clearance hole 35 is provided at the center of the self-locking seat 3, and the knife shaft 2 passes through the clearance hole 35. In this embodiment, two sliders 33 are symmetrically distributed on both sides of the knife shaft 2, and correspondingly, two slide grooves 34 are symmetrically distributed on both sides of the clearance hole 35, and both are connected with the clearance hole 35. Here, the slide groove 34 extends along the radial direction of the knife shaft 2.

[0042] like Figure 8 and Fig. 9As shown, in this embodiment, the rotating bracket 32 ​​includes two working parts 321 corresponding to the two sliders 33. The working parts 321 are cylindrical and are rotatably embedded in the clearance groove 311. The guide groove 3211 is arranged on the peripheral side of the working part 321. A pre-installed hole 312 is provided on the inner wall of the clearance groove 311. The free end of the working part 321 is rotatably embedded in the pre-installed hole 312 to form a limit for the rotating bracket 32. Further, the end of the slide groove 34 away from the clearance hole 35 is provided with a shaft frame, and a shaft groove 341 is provided on the shaft frame. The working part 321 is provided with an annular limiting groove 3212, and the annular limiting groove 3212 is distributed between the free end of the working part 321 and the guide groove 3211. After assembly, the shaft frame extends into the annular limiting groove 3212, and the bottom of the annular limiting groove 3212 overlaps the shaft groove 341 to limit the rotating bracket in the direction of its rotation axis.

[0043] Example 2

[0044] This embodiment is a further improvement on Embodiment 1, and the repeated contents will not be repeated here.

[0045] Please refer to Figures 11 to 16 The guide groove 3211 includes an unlocking section and a locking section that are connected to each other, and the width of the unlocking section is greater than that of the locking section; when the slide post 332 moves into the locking section, the slider 33 abuts against the knife shaft 2. In this embodiment, an elastic member 331 is pressed between the slide groove 34 and the slider 33. Preferably, the elastic member 331 is a spring. The spring here acts on the slider 33 so that the slider 33 can abut against the knife shaft 2, so that when the rotating bracket 32 ​​is in a position such as Fig.13 and Fig.14 In the open state shown, the knife shaft 2 can be limited to prevent it from falling off due to its own weight. In this embodiment, in order to prevent the spring from falling off, a limiting hole is arranged at the end of the slider 33 away from the knife assembly, one end of the spring is embedded in the limiting hole, and the other end abuts against the inner wall of the slide groove 34.

[0046] In order to further increase the anti-falling effect of the slider 33 on the knife shaft 2, as shown in FIG. Fig.11 , Fig.12 , Fig.13 and Fig.14As shown, a locking groove 21 is arranged on the knife shaft 2, and the elastic member 331 acts on the slider 33 so that the slider 33 can extend into the locking groove 21. When in use, the slider 33 extends into the locking groove 21, thereby limiting the knife shaft 2 in its axial direction. Because the slider 33 here limits the knife shaft 2 under the action of the elastic member 331, its purpose is to prevent the knife shaft 2 from falling off by itself during the removal of the knife shaft 2, that is to say, the slider 33 here only limits the knife shaft 2 under the action of the elastic member 331 and cannot affect the normal removal of the knife shaft 2. Therefore, in this embodiment, the locking groove 21 is a V-shaped groove, and the end of the slider 33 extending into the locking groove 21 is provided with a V-shaped surface adapted to the locking groove 21. Specifically, as Fig.13 and Fig.14 The figure shows the state of the knife shaft 2 being unlocked and fixed after installation. At this time, the slider 33 extends into the locking groove 21 only under the action of the elastic member 331. When the knife shaft 2 needs to be removed, it is pulled upward. At this time, the slide post 332 is in the unlocking section, and the rotating bracket 32 ​​is in the open state. The sliding gap between the slide post 332 and the inner side surface of the guide groove 3211 away from the knife shaft 2 is L1, and the elastic member 331 drives the slider 33 to extend into the locking groove 21 to a depth of L2. Therefore, the lower inner side surface of the locking groove 21 and the V-shaped surface at the end of the slider 33 act to make the slider 33 move away from the knife shaft 2 in the radial direction of the knife shaft 2. During the process, the slide post can move in the unlocking section in the direction away from the knife shaft, thereby losing the limit on the knife shaft 2, and realizing the removal of the knife shaft 2.

[0047] In this embodiment, the sliding gap is L1, and 1mm<L1<5mm. Preferably, L1=3mm. The depth of the slider 33 extending into the locking groove 21 is L2, and 1mm<L2<4mm. Preferably, L2=2mm. In use, when the rotating bracket 32 ​​rotates, the two sliders 33 can approach each other or move away from each other in the manner in which their respective slide posts 332 slide in the corresponding guide grooves 3211. By rotating the rotating bracket 32, the knife shaft 2 is fixed by the slider 33. Here, the slider 33 has an axial limiting effect on the knife shaft 2 when the rotating bracket 32 ​​is in the open state to prevent it from falling off under the action of its own weight; and when the rotating bracket 32 ​​is in the closed state, the slider 33 has an axial fixing effect on the knife shaft 2, and the depth of the slider 33 extending into the locking groove 21 is L3, and 1mm<L3<5mm. Preferably, L3=4mm. Specifically as Fig.15 and Fig.16 shown.

[0048] In this embodiment, the guide groove 3211 includes a first working surface and a second working surface that are arranged opposite to each other, and the first working surface faces the knife shaft 2; the elastic member 331 drives the slider 33 so that the slide post 332 slides and fits with the second working surface. Further, the first working surface includes a spiral guide surface 32112 and a locking surface 32111; the spiral guide surface 32112 and the locking surface 32111 have a smooth transition; when the rotating bracket 32 ​​rotates and is in a closed state, the slide post 332 is distributed in the locking surface 32111 area and is tightly matched with the locking groove 21. Fig.10 and Fig.11 As shown, the length of the locking surface 32111 is D1, and 1mm<D1<4mm. Preferably, D1=3mm. The second working surface here is used to limit the slider 33 through the slide post 332 to prevent it from extending too deep into the locking groove 21 under the action of the elastic member 331, thereby affecting disassembly. The locking surface 32111 cooperates with the second working surface to limit and fix the slide post 332 through a tight fit, which can keep the rotating bracket 32 ​​in a closed state without changing when not affected by external force, thereby ensuring that the locking state of the slider 33 on the knife shaft 2 does not change, and has high safety.

[0049] Furthermore, the second working surface includes an anti-slip surface 32113 and a locking surface 32114; the spiral guide surface 32112 and the anti-slip surface 32113 are arranged opposite to each other and together constitute an unlocking section; the locking surface 32111 and the locking surface 32114 are arranged opposite to each other and together constitute a locking section. Fig. 9 , Fig.13 , Fig.14 , Fig.15 and Fig.16 As shown, the anti-slip surface 32113 and the locking surface 32114 have a smooth transition. When the rotating bracket 32 ​​is in the open state, the slide post 332 abuts against the anti-slip surface 32113, and the depth of the slider 33 extending into the locking groove 21 is L2; ​​when the rotating bracket 32 ​​is in the closed state, the slide post 332 abuts against the locking surface 32114, and the depth of the slider 33 extending into the locking groove 21 is L3. In this embodiment, L3>L2.

[0050] In this embodiment, a shaft sleeve is provided outside the cutter shaft 2 through a bearing rotating sleeve, and a locking groove 21 is arranged on the shaft sleeve. In order to facilitate the installation of the cutter shaft 2, the locking groove 21 is arranged along the circumference of the cutter shaft 2. When installing, the circumferential position of the cutter shaft 2 does not need to be considered, which is convenient for use.

[0051] Example 3

[0052] Please refer to Figures 1 to 3A food processor includes a cup body 1 and the above-mentioned knife assembly, wherein: a self-locking seat 3 is arranged at the bottom of the cup body 1; one end of the knife shaft 2 extends into the cup body 1. The self-locking seat 3 is arranged at the bottom of the cup body 1, one end of the knife shaft 2 passes through the cup body 1 and extends into the cup body, and the end is provided with a blade, and the other end passes through the self-locking seat 3, and is used to connect a driving device to drive it to rotate. The knife assembly installed in the food processor here can realize the removal of the knife shaft 2 by rotating the rotating bracket 32, which is convenient to use.

[0053] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A knife assembly, characterized in that: It comprises a self-locking seat (3), a knife shaft (2) and a slide block (33), wherein: The knife shaft (2) is arranged on the self-locking seat (3), and the sliders (33) are distributed around the knife shaft (2); A rotating bracket (32) is rotatably mounted on the self-locking seat (3), and the knife shaft (2) is provided with a locking groove (21); The slider (33) is slidably connected to the self-locking seat (3), and a slide post (332) is arranged on the slider (33); a guide groove (3211) is provided on the rotating bracket (32) in a manner of spirally extending along the axial direction of the rotating shaft rotating relative to the self-locking seat (3), and the slide post (332) extends into the guide groove (3211); when the rotating bracket (32) rotates, the slider (33) can be pressed against or separated from the knife shaft (2) in a manner that the slide post (332) slides in the guide groove (3211); The guide groove (3211) comprises an unlocking section and a locking section which are connected to each other, and the width of the unlocking section is greater than the width of the locking section; When the slide column (332) moves into the locking section, the slide block (33) abuts against the knife shaft (2); When the slide column (332) moves into the unlocking section, the slide block (33) extends into the locking groove (21) and is able to pull the knife shaft (2) upwards, thereby achieving disassembly of the knife shaft (2).

2. The knife assembly according to claim 1, characterized in that: The two sliding blocks (33) are symmetrically distributed on both sides of the knife shaft (2).

3. The knife assembly according to claim 2, characterized in that: The rotating bracket (32) is provided with two guide grooves (3211) corresponding to the two sliding blocks (33) one by one; When the rotating bracket (32) rotates relative to the self-locking seat (3), the two sliding blocks (33) can approach each other or move away from each other in the manner in which their respective sliding columns (332) slide in the corresponding guide grooves (3211).

4. The knife assembly according to any one of claims 1 to 3, characterized in that: The lower end surface of the self-locking seat (3) is provided with an assembly cavity (36), the bottom of the assembly cavity (36) is provided with a slide groove (34), and the slider (33) is slidably embedded in the slide groove (34); The knife shaft (2) passes through the bottom of the slide groove (34).

5. The knife assembly according to claim 4, characterized in that: A fixing frame (31) is embedded in the assembly cavity (36), and the rotating bracket (32) is rotatably mounted on the fixing frame (31); A clearance groove (311) is provided through the fixed frame (31), and the sliding block (33) passes through the clearance groove (311) and is connected to the rotating bracket (32).

6. The knife assembly according to claim 1, characterized in that: The guide groove (3211) comprises a first working surface and a second working surface which are arranged opposite to each other, and the first working surface faces the knife shaft (2); The first working surface includes a spiral guide surface (32112) and a locking surface (32111); The second working surface includes an anti-slip surface (32113) and a locking surface (32114); The spiral guide surface (32112) and the anti-slip surface (32113) are arranged opposite to each other and together constitute an unlocking section; the locking surface (32111) and the locking surface (32114) are arranged opposite to each other and together constitute a locking section.

7. The knife assembly according to claim 6, characterized in that: It also includes an elastic member (331) which acts on the sliding block (33) so that the sliding column (332) is pressed against the second working surface.

8. A food processor, characterized in that: It comprises a cup body (1), and a knife assembly as claimed in any one of claims 1 to 7, wherein: The self-locking seat (3) is arranged on the cup body (1); One end of the knife shaft (2) extends into the cup body (1).

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