Cutter locking structure and chopping machine

Abstract

The utility model discloses a cutter locking structure and a chopping machine. The cutter locking structure comprises a base, a rotating ring, an elastic limiting ring and a chopping cutter assembly. The rotating ring is rotationally connected to the base, and limiting strips are arranged on the inner circumferential wall of the rotating ring. The elastic limiting ring penetrates through the rotating ring and is fixed relative to the base, and the inner circumferential wall of the elastic limiting ring protrudes to form a first limiting part. The chopping knife assembly penetrates through the elastic limiting ring, the peripheral wall of the chopping knife assembly protrudes to form a supporting part and a second limiting part, the supporting part is located above the second limiting part, and the lower end of the supporting part can abut against the base; the chopping knife assembly can move in the vertical direction so that the second limiting part can push the first limiting part to be bent in the axis direction away from the elastic limiting ring. When the rotating ring rotates to enable the limiting strip to be aligned with the first limiting part, the limiting strip limits the first limiting part to be bent in the direction away from the axis of the elastic limiting ring, so that the first limiting part limits the second limiting part to move in the vertical direction.

Description

Technical Field

[0001] The utility model relates to the technical field of shredders, in particular to a knife locking structure and a shredder. Background Art

[0002] In modern life, small household appliances for mixing are increasingly used in home kitchens, such as juicers, noodle mixers, soymilk machines, wall breakers, and food processors. These mixing devices all drive the rotating shaft to drive the mixing blades or mixing blades to mix, and automatically chop and / or mix the materials. The mixing blade of the existing mixing blade assembly is connected to the motor shaft through the blade shaft and the transmission member. The blade shaft and the transmission member are threadedly connected, so that the installation of the blade disc is a fixed connection. When disassembling, the threads must be loosened to separate the blade shaft and its mixing blade. When the blade needs to be removed for cleaning, the process of disassembling the blade is very troublesome. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the utility model provides a knife locking structure and a shredder.

[0004] In a first aspect, an embodiment of the utility model provides a knife locking structure, the knife locking structure comprising:

[0005] Base;

[0006] A rotating ring, rotatably connected to the base, wherein the inner peripheral wall of the rotating ring is provided with a limiting strip;

[0007] An elastic limiting ring, which is passed through the rotating ring and fixed relatively to the base, and the elastic limiting ring is provided with a first limiting portion;

[0008] A chopping knife assembly is inserted into the elastic limiting ring, and the outer peripheral wall protrusions of the chopping knife assembly respectively form a supporting portion and a second limiting portion, the supporting portion is located above the second limiting portion, and the lower end of the supporting portion can abut against the base, and the chopping knife assembly can move in the up-down direction so that the second limiting portion pushes the first limiting portion to bend in the direction away from the axis of the elastic limiting ring;

[0009] When the rotating ring rotates to align the limiting strip with the first limiting portion, the limiting strip limits the first limiting portion to bend in a direction away from the axis of the elastic limiting ring, so that the first limiting portion limits the second limiting portion to move in the up and down directions.

[0010] The knife locking structure according to the embodiment of the utility model has at least the following technical effects: when the shredder knife assembly needs to be installed on the base, the shredder knife assembly is downwardly inserted into the elastic limiting ring. Since there is a sufficient gap between the outer peripheral wall of the elastic limiting ring and the first limiting part, the second limiting part pushes the first limiting part in the process of moving downward so that the first limiting part bends in the direction away from the axis of the elastic limiting ring. The second limiting part moves to the bottom of the first limiting part, and the first limiting part rebounds to the initial position. Then, the rotating ring is rotated to align the limiting strip with the first limiting part. Since there is a gap between the outer peripheral wall of the elastic limiting ring and the first limiting part The gap is not large enough to allow the first limiting part to bend in the direction away from the axis of the elastic limiting ring, and the first limiting part blocks the second limiting part from moving upward. At this time, the lower end of the support part abuts against the base, and the base and the first limiting part cooperate to limit the movement of the shredder knife assembly in the up and down directions. When the shredder knife assembly needs to be removed from the base, the rotating ring is rotated so that the limiting strip is no longer aligned with the first limiting part. There is enough gap between the outer peripheral wall of the elastic limiting ring and the first limiting part. During the upward movement of the second limiting part, the first limiting part can be pushed to bend in the direction away from the axis of the elastic limiting ring, so that the shredder knife assembly can be removed from the base smoothly. The locking knife structure has a simple structure and is easy to load and unload, so that the shredder knife assembly can be frequently removed from the base for cleaning and then reinstalled on the base.

[0011] According to some embodiments of the utility model, the elastic limiting ring is provided with a limiting hole, and the base is provided with a limiting hook, and the limiting hook is inserted into the limiting hole.

[0012] According to some embodiments of the present utility model, the plurality of limiting holes are distributed circumferentially around the axis of the elastic limiting ring, and the plurality of limiting hooks correspond one-to-one to the plurality of limiting holes.

[0013] According to some embodiments of the utility model, the side of the first limiting portion close to the axis of the elastic limiting ring includes a first inclined wall and a second inclined wall, the lower end of the first inclined wall is connected to the upper end of the second inclined wall, the first inclined wall is inclined from top to bottom toward the axis direction close to the elastic limiting ring, and the second inclined wall is inclined from bottom to top toward the axis direction close to the elastic limiting ring.

[0014] According to some embodiments of the utility model, the second limiting portion includes a third inclined wall and a fourth inclined wall, the lower end of the third inclined wall is connected to the upper end of the fourth inclined wall, the third inclined wall is inclined from top to bottom away from the axial direction of the chopping knife assembly, and the second inclined wall is inclined from bottom to top away from the axial direction of the chopping knife assembly.

[0015] According to some embodiments of the utility model, the shredder assembly includes a cutter, a rotating shaft and a sleeve, the rotating shaft is passed through and rotatably connected to the sleeve, the cutter is fixedly connected to the top of the rotating shaft, and the outer peripheral wall of the sleeve is provided with the supporting portion and the second limiting portion.

[0016] According to some embodiments of the utility model, a fifth inclined wall is provided on one side of the limit strip along the circumferential direction, and two sides of the fifth inclined wall along the circumferential direction are respectively connected to the limit strip and the inner circumferential wall of the rotating ring.

[0017] According to some embodiments of the present invention, a third limiting portion is provided on the outer peripheral wall of the rotating ring, and a lower end surface of the third limiting portion abuts against the base.

[0018] According to some embodiments of the utility model, a rotating part is provided at the lower end of the rotating ring, a limiting groove is provided at the lower end surface of the base, and a fourth limiting part is provided in the limiting groove to separate the limiting groove into a locking area and an unlocking area; when the rotating part rotates to the locking area, the limiting strip is aligned with the first limiting part; when the rotating part rotates to the unlocking area, the second limiting part can move in the up and down directions to push the first limiting part to bend toward the axial direction away from the elastic limiting ring.

[0019] In a second aspect, an embodiment of the utility model further provides a shredder, comprising a knife locking structure according to the embodiment of the first aspect of the utility model.

[0020] The shredder according to the embodiment of the utility model has at least the following technical effects: the shredder adopts the knife locking structure, and when the shredder knife assembly needs to be installed on the base, the shredder knife assembly is downwardly inserted into the elastic limiting ring. Since there is a sufficient gap between the outer peripheral wall of the elastic limiting ring and the first limiting part, the second limiting part pushes the first limiting part in the process of moving downward so that the first limiting part bends in the direction away from the axis of the elastic limiting ring. The second limiting part moves to the bottom of the first limiting part, and the first limiting part rebounds to the initial position. Then, the rotating ring is rotated to align the limiting strip with the first limiting part. Since the outer peripheral wall of the elastic limiting ring is aligned with the first limiting part, the second limiting part pushes the first limiting part in the process of moving downward so that the first limiting part bends in the direction away from the axis of the elastic limiting ring. The gap between the positioning parts is not large enough to allow the first limiting part to bend in the direction of the axis away from the elastic limiting ring, and the first limiting part blocks the second limiting part from moving upward. At this time, the lower end of the support part abuts against the base, and the base and the first limiting part cooperate to limit the movement of the shredder blade assembly in the up and down directions. When the shredder blade assembly needs to be removed from the base, the rotating ring is rotated so that the limiting strip is no longer aligned with the first limiting part. There is enough gap between the outer peripheral wall of the elastic limiting ring and the first limiting part. During the upward movement of the second limiting part, the first limiting part can be pushed to bend in the direction of the axis away from the elastic limiting ring, so that the shredder blade assembly can be smoothly removed from the base. The locking knife structure of the shredder has a simple structure and is easy to load and unload, so that the shredder blade assembly can be frequently removed from the base for cleaning and then reinstalled on the base.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of the knife locking structure of some embodiments of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the rotating ring in some embodiments of the utility model in the unlocking area;

[0025] Figure 3 It is a schematic diagram of the structure of the rotating ring in some embodiments of the utility model in the locking area;

[0026] Figure 4 It is an exploded view of the knife locking structure of some embodiments of the utility model;

[0027] Figure 5 is an exploded view of a shredder assembly of some embodiments of the utility model;

[0028] Figure 6It is a schematic diagram of the structure of the rotating ring of some embodiments of the utility model;

[0029] Figure 7 It is a schematic diagram of the structure of the elastic limiting ring of some embodiments of the utility model;

[0030] Figure 8 It is a schematic structural diagram of the knife locking structure of some embodiments of the utility model from another angle;

[0031] Fig. 9 It is a schematic diagram of the structure of the shredder of some embodiments of the utility model.

[0032] Figure Number:

[0033] Base 100, limiting hook 110, limiting groove 120, fourth limiting portion 130, locking area 140, unlocking area 150;

[0034] Rotating ring 200, limiting strip 210, fifth inclined wall 220, third limiting portion 230, rotating portion 240, gap 250;

[0035] An elastic limiting ring 300, a first limiting portion 310, a first inclined wall 320, a second inclined wall 330, and a limiting hole 340;

[0036] The chopping blade assembly 400 , the supporting portion 410 , the second limiting portion 420 , the third inclined wall 430 , the fourth inclined wall 440 , the chopping blade 450 , the rotating shaft 460 , and the sleeve 470 . DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings.

[0042] According to some embodiments of the present invention, referring to Figures 1 to 4 The knife locking structure includes a base 100, a rotating ring 200, an elastic limiting ring 300 and a shredder assembly 400. The rotating ring 200 is passed through and rotatably connected to the base 100. The inner circumferential wall of the rotating ring 200 is provided with a limiting strip 210, which extends in the up-down direction, and a plurality of limiting strips 210 are circumferentially distributed along the axis direction of the rotating ring 200. The elastic limiting ring 300 is passed through the rotating ring 200 and is relatively fixed to the base 100. A plurality of first limiting portions 310 are provided at the lower end of the elastic limiting ring 300, and the plurality of first limiting portions 310 are circumferentially distributed around the axis of the elastic limiting ring 300, and the plurality of first limiting portions 310 correspond to the plurality of limiting strips 210 one by one. The chopping blade assembly 400 is disposed through the elastic limiting ring 300. The outer peripheral wall protrusions of the chopping blade assembly 400 respectively form a support portion 410 and a second limiting portion 420. The support portion 410 is located above the second limiting portion 420. The chopping blade assembly 400 can move in the up-down direction so that the second limiting portion 420 pushes the first limiting portion 310 to bend in the direction away from the axis of the elastic limiting ring 300. When the rotating ring 200 rotates to align the limiting strip 210 with the first limiting portion 310, the limiting strip 210 limits the first limiting portion 310 to bend in the direction away from the axis of the elastic limiting ring 300, so that the first limiting portion 310 limits the second limiting portion 420 to move in the up-down direction.

[0043] Reference Figures 2 to 4 When the shredder blade assembly 400 needs to be installed on the base 100, the shredder blade assembly 400 is downwardly inserted into the elastic limiting ring 300. Figure 2At this time, the rotating ring 200 is in an unlocked state. Since there is a sufficient gap 250 between the outer peripheral wall of the elastic limiting ring 300 and the first limiting portion 310, the second limiting portion 420 pushes the first limiting portion 310 during the downward movement so that the first limiting portion 310 bends in the direction away from the axis of the elastic limiting ring 300. The second limiting portion 420 moves to the bottom of the first limiting portion 310, and the first limiting portion 310 rebounds to the initial position. Then, referring to Figure 3 , rotate the rotating ring 200 to align the limiting strip 210 with the first limiting portion 310. At this time, the rotating ring 200 is in a locked state. Since the gap 250 between the outer peripheral wall of the elastic limiting ring 300 and the first limiting portion 310 is not large enough to make the first limiting portion 310 bend in the axial direction away from the elastic limiting ring 300, the first limiting portion 310 blocks the second limiting portion 420 from moving upward. At this time, the lower end of the supporting portion 410 abuts against the base 100, and the base 100 cooperates with the first limiting portion 310 to limit the movement of the shredder assembly 400 in the up and down directions.

[0044] Reference Figures 2 to 4 When the shredder assembly 400 needs to be removed from the base 100, the rotating ring 200 is rotated so that the limiting strip 210 is no longer aligned with the first limiting portion 310, so that the rotating ring 200 is removed from the base 100. Figure 3 The locked state becomes Figure 2 In the unlocked state, there is a sufficient gap 250 between the outer wall of the elastic limiting ring 300 and the first limiting portion 310. During the upward movement of the second limiting portion 420, the first limiting portion 310 can be pushed to bend in a direction away from the axis of the elastic limiting ring 300, so that the shredder assembly 400 can be smoothly removed from the base 100.

[0045] It can be understood that the knife locking structure is simple in structure and easy to assemble and disassemble, so that the shredder knife assembly 400 can be regularly removed from the base 100 for cleaning and then reassembled back to the base 100.

[0046] According to some embodiments of the present invention, referring to Figure 2 and Figure 7 The elastic limiting ring 300 is provided with a limiting hole 340, and a plurality of limiting holes 340 are circumferentially distributed around the axial direction of the elastic limiting ring 300. The base 100 is provided with a plurality of limiting hooks 110, and the plurality of limiting hooks 110 correspond one-to-one to the plurality of limiting holes 340. The limiting hooks 110 are inserted into the limiting holes 340 to fix the elastic limiting ring 300 relative to the base 100.

[0047] According to some embodiments of the present invention, referring to Figure 7The first limiting portion 310 includes a first inclined wall 320 and a second inclined wall 330 on one side close to the axis of the elastic limiting ring 300. The lower end of the first inclined wall 320 is connected to the upper end of the second inclined wall 330. The first inclined wall 320 is inclined from top to bottom toward the axis direction close to the elastic limiting ring 300, and the second inclined wall 330 is inclined from bottom to top toward the axis direction close to the elastic limiting ring 300.

[0048] According to some embodiments of the present invention, referring to Figure 5 The second limiting portion 420 includes a third inclined wall 430 and a fourth inclined wall 440. The lower end of the third inclined wall 430 is connected to the upper end of the fourth inclined wall 440. The third inclined wall 430 is inclined from top to bottom toward the axial direction away from the chopping knife assembly 400, and the second inclined wall 330 is inclined from bottom to top toward the axial direction away from the chopping knife assembly 400.

[0049] It can be understood that when the second position-limiting portion 420 moves downward, the fourth inclined wall 440 abuts against the first inclined wall 320 and guides the first inclined wall 320 to drive the first position-limiting portion 310 to bend in a direction away from the axis of the elastic position-limiting ring 300. When the second position-limiting portion 420 moves upward, the third inclined wall 430 abuts against the second inclined wall 330 and guides the second inclined wall 330 to drive the first position-limiting portion 310 to bend in a direction away from the axis of the elastic position-limiting ring 300.

[0050] According to some embodiments of the present invention, referring to Figure 5 The shredder assembly 400 includes a cutter 450 , a rotating shaft 460 and a sleeve 470 . The rotating shaft 460 is passed through and rotatably connected to the sleeve 470 . The cutter 450 is fixedly connected to the top of the rotating shaft 460 . The outer peripheral wall of the sleeve 470 is provided with a supporting portion 410 and a second limiting portion 420 .

[0051] Preferably, the rotating shaft 460 and the sleeve 470 are rotatably connected via a bearing.

[0052] According to some embodiments of the present invention, referring to Figure 6 A fifth inclined wall 220 is provided on one side of the limiting strip 210 along the circumferential direction, and two sides of the fifth inclined wall 220 along the circumferential direction are respectively connected to the limiting strip 210 and the inner circumferential wall of the rotating ring 200 .

[0053] It can be understood that when the rotating ring 200 rotates, the first limiting portion 310 can move from the area between two adjacent limiting strips 210 under the guidance of the fifth inclined wall 220 and align with the limiting strips 210 .

[0054] According to some embodiments of the present invention, referring to Figure 2 and Figure 6The outer peripheral wall of the rotating ring 200 is provided with a third limiter 230, and the lower end surface of the third limiter 230 abuts against the base 100. The upper end of the rotating ring 200 abuts against the base 100, so that the base 100 limits the rotating ring 200 to move in the up and down direction.

[0055] According to some embodiments of the present invention, referring to Figure 6 and Figure 8 A rotating portion 240 is provided at the lower end of the rotating ring 200 , a limiting groove 120 is provided at the lower end surface of the base 100 , and a fourth limiting portion 130 is provided in the limiting groove 120 to separate the limiting groove 120 into a locking area 140 and an unlocking area 150 .

[0056] When the rotating portion 240 rotates to the locking area 140 , the limiting strip 210 is aligned with the first limiting portion 310 , and the rotating ring 200 is in a locked state.

[0057] When the rotating portion 240 rotates to the unlocking area 150 , the second limiting portion 420 can move in the up-down direction to push the first limiting portion 310 to bend in the axial direction away from the elastic limiting ring 300 . At this time, the rotating ring 200 is in the unlocking state.

[0058] Reference Fig. 9 , Fig. 9 A schematic diagram of the knife lock structure applied to a shredder.

[0059] In the description of this specification, the description with reference to the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A knife locking structure, characterized in that: include: Base (100); A rotating ring (200) is rotatably connected to the base (100), and a limiting strip (210) is provided on the inner peripheral wall of the rotating ring (200); An elastic limiting ring (300) is inserted through the rotating ring (200) and fixed relatively to the base (100), and the elastic limiting ring (300) is provided with a first limiting portion (310); A chopping knife assembly (400) is inserted into the elastic limiting ring (300); the outer peripheral wall protrusions of the chopping knife assembly (400) respectively form a supporting portion (410) and a second limiting portion (420); the supporting portion (410) is located above the second limiting portion (420); the lower end of the supporting portion (410) can abut against the base (100); the chopping knife assembly (400) can move in the up-down direction so that the second limiting portion (420) pushes the first limiting portion (310) to bend in the axial direction away from the elastic limiting ring (300); When the rotating ring (200) rotates to align the limit strip (210) with the first limit portion (310), the limit strip (210) limits the first limit portion (310) from bending in a direction away from the axis of the elastic limit ring (300), so that the first limit portion (310) limits the second limit portion (420) from moving in the up and down directions.

2. The knife locking structure according to claim 1, characterized in that: The elastic limiting ring (300) is provided with a limiting hole (340), and the base (100) is provided with a limiting hook (110), and the limiting hook (110) is inserted into the limiting hole (340).

3. The knife locking structure according to claim 2, characterized in that: The plurality of limiting holes (340) are distributed circumferentially around the axis of the elastic limiting ring (300), and the plurality of limiting hooks (110) correspond one-to-one to the plurality of limiting holes (340).

4. The knife locking structure according to claim 1, characterized in that: The first limiting portion (310) includes a first inclined wall (320) and a second inclined wall (330) on one side close to the axis of the elastic limiting ring (300), wherein the lower end of the first inclined wall (320) is connected to the upper end of the second inclined wall (330), the first inclined wall (320) is inclined from top to bottom toward the axis of the elastic limiting ring (300), and the second inclined wall (330) is inclined from bottom to top toward the axis of the elastic limiting ring (300).

5. The knife locking structure according to claim 4, characterized in that: The second limiting portion (420) comprises a third inclined wall (430) and a fourth inclined wall (440), the lower end of the third inclined wall (430) is connected to the upper end of the fourth inclined wall (440), the third inclined wall (430) is inclined from top to bottom in a direction away from the axis of the shredder blade assembly (400), and the second inclined wall (330) is inclined from bottom to top in a direction away from the axis of the shredder blade assembly (400).

6. The knife locking structure according to claim 1, characterized in that: The shredder assembly (400) comprises a cutter (450), a rotating shaft (460) and a sleeve (470); the rotating shaft (460) is passed through and rotatably connected to the sleeve (470); the cutter (450) is fixedly connected to the top of the rotating shaft (460); and the outer peripheral wall of the sleeve (470) is provided with the supporting portion (410) and the second limiting portion (420).

7. The knife locking structure according to claim 1, characterized in that: A fifth inclined wall (220) is provided on one side of the limiting strip (210) along the circumferential direction, and two sides of the fifth inclined wall (220) along the circumferential direction are respectively connected to the limiting strip (210) and the inner circumferential wall of the rotating ring (200).

8. The knife locking structure according to claim 1, characterized in that: The outer peripheral wall of the rotating ring (200) is provided with a third limiting portion (230), and the lower end surface of the third limiting portion (230) is in contact with the base (100).

9. The knife locking structure according to claim 1, characterized in that: A rotating portion (240) is provided at the lower end of the rotating ring (200), a limiting groove (120) is provided at the lower end surface of the base (100), and a fourth limiting portion (130) is provided in the limiting groove (120) to separate the limiting groove (120) into a locking area (140) and an unlocking area (150); when the rotating portion (240) rotates to the locking area (140), the limiting strip (210) is aligned with the first limiting portion (310); when the rotating portion (240) rotates to the unlocking area (150), the second limiting portion (420) can move in the up and down directions to push the first limiting portion (310) to bend in the axial direction away from the elastic limiting ring (300).

10. A shredder, characterized in that: The utility model comprises a knife locking structure as claimed in any one of claims 1 to 9.

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