Cutter assembly and food processor

Abstract

The cutter assembly is used for the food processor and comprises a rotating shaft and a cutter, the cutter comprises a cutter shaft and a stirring cutter set connected to the cutter shaft, a shaft sleeve is arranged on the lower portion of the cutter shaft, two or more spiral grooves entering and exiting from the bottom end are formed in the shaft sleeve, and the upward spiral direction of the spiral grooves is consistent with the rotating direction of the rotating shaft. The side wall of the rotating shaft is provided with a convex shaft corresponding to the spiral groove, and the convex shaft is clamped into the tail end of the spiral groove by nesting the shaft sleeve on the upper part of the rotating shaft and rotating the cutter shaft, so that the cutter is detachably mounted on the rotating shaft; the food processor adopting the cutter assembly with the structure can be quickly and conveniently assembled or disassembled from the rotating shaft through the matching of the spiral groove and the convex shaft, the disassembled cutter assembly is more thoroughly and cleanly cleaned, the clamping connection with the cutter assembly is kept by utilizing the rotating direction of the rotating shaft, and the food processor has the advantages of simple structure, few parts, low cost and the like. The processing cost is low, the assembly and disassembly are quick, and the durability and the connection reliability are high.

Description

Technical Field

[0001] This utility model relates to the field of food processors, specifically a blade assembly and a food processor. Background Art

[0002] With the continuous improvement of people's living standards, many different types of food processors have appeared on the market. When a food processor is working, the main unit drives the blending blade assembly to rotate within the food container to pulverize the ingredients. To make the blending blade assembly easier to clean, some food processors utilize detachable blending blade assemblies.

[0003] As shown in the prior art, Chinese patent document CN202322536925.5, which describes a mixing blade assembly and a food processor, its main structure includes a rotating shaft with an outwardly protruding lug; and a blade assembly including a blade holder, a blade, and an elastic locking ring. The blade is fixed to the blade holder, which includes a shaft hole for the rotating shaft to pass through, a stepped groove corresponding to the lug, and an annular groove communicating with the stepped groove. The elastic locking ring is clamped in the annular groove and enters the stepped groove, so that the elastic locking ring forms a limiting engagement with the lug below the lug, thereby detachably mounting the blade assembly to the rotating shaft.

[0004] The aforementioned prior art mainly utilizes an elastic locking ring to lock the blade assembly onto the rotating shaft. However, this elastic locking ring has a small structure and is easily lost during use. Moreover, it is difficult to balance the deformation range of the elastic locking ring. If it is too tight, the blade assembly is difficult to install and remove; if it is too loose, the blade assembly is prone to detachment when rotating at high speed. (In addition, even if the elastic locking ring is too loose or too tight, it may be pushed up by hard food during stirring, similar to lifting the blade assembly upwards.) Therefore, it poses certain safety hazards. Thus, the applicant provides a new solution that can replace the existing technology by improving and perfecting the existing structure, for consumers to choose from. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned existing problems and provide a simple and reasonable knife assembly and food processor. Its function is to make the knife assembly detachable, which facilitates cleaning of the knife assembly.

[0006] The tool assembly includes a rotating shaft and a tool. The tool includes a tool shaft and a stirring blade assembly connected to the tool shaft. The lower part of the tool shaft is provided with a bushing, and the bushing has two or more spiral grooves that enter and exit from the bottom. The spiral grooves spiral upward in the same direction as the rotation direction of the rotating shaft. The side wall of the rotating shaft is provided with a convex shaft corresponding to the spiral groove. By the bushing being nested in the upper part of the rotating shaft and the tool shaft being rotated, the convex shaft is engaged with the end of the spiral groove, so that the tool can be detachably installed on the rotating shaft.

[0007] This utility model can also be solved by the following technical measures:

[0008] As a more specific embodiment, the end of the spiral groove is provided with a contact surface that engages with the convex shaft, and the contact surface has a curved surface structure that is wider on the outside and narrower on the inside; the entrance of the spiral groove passes through the bottom edge of the bushing, and the width of the entrance narrows linearly along the spiraling direction of the convex shaft.

[0009] As a further embodiment, the cutter shaft includes a fastening sleeve and a connecting sleeve that fit into the upper and lower parts of the rotating shaft. The lower part of the connecting sleeve forms a bushing, and a lower stepped surface is provided on the upper side of the bushing. The stirring blade assembly is sleeved outside the connecting sleeve and is fastened to the upper part of the connecting sleeve by the fastening sleeve, so that the stirring blade assembly is limited between the lower stepped surface and the fastening sleeve.

[0010] As a further embodiment, the upper part of the connecting sleeve is provided with an external thread, and the lower part of the fastening sleeve is provided with an internal thread corresponding to the external thread. The fastening sleeve and the connecting sleeve are screwed together by the cooperation of the internal thread and the external thread.

[0011] As a further embodiment, the fastening sleeve has an upper stepped surface on the upper side of the internal thread portion, and a rubber ring is provided on the upper stepped surface. After the fastening sleeve and the connecting sleeve are screwed together, the rubber ring is pressed between the upper stepped surface and the upper edge of the connecting sleeve.

[0012] As a further embodiment, the upper part of the outer side wall of the fastening sleeve is provided with a non-slip groove for taking out and putting in; the lower part of the outer side wall of the fastening sleeve is provided with a plurality of screw-on non-slip recesses, or the top end of the fastening sleeve is formed with a hexagonal hole.

[0013] As a further embodiment, the stirring blade assembly has a non-circular hole at its center, and at least one edge is provided on the non-circular hole. The connecting sleeve or the part with external threads has several facets corresponding to the edge, and the stirring blade assembly is oriented and fitted onto the connecting sleeve by the facets cooperating with the edge.

[0014] As a further embodiment, the bushing is provided with two spiral grooves; the bushing is provided with two anti-slip end faces between the two spiral grooves, and the two anti-slip end faces are arranged facing opposite directions.

[0015] As a further embodiment, the stirring blade assembly includes a blade holder and several blades integrally connected to the periphery of the blade holder, with a cutting edge on one side of each blade; the several blades include an upper blade partially inclined upwards, a lower blade partially inclined downwards, and a flat blade partially horizontally arranged, with the upper blade, lower blade, and flat blade alternately arranged on the blade holder.

[0016] The purpose of this utility model is achieved as follows:

[0017] A food processor includes a base assembly and a cup assembly mounted on the base assembly, and also includes a blade assembly with any of the above-described structures. The base assembly has a power output shaft, the top end of which extends into the cup assembly. The blade assembly is located within the cup assembly and is detachably mounted on the power output shaft.

[0018] The beneficial effects of the utility model are as follows:

[0019] This utility model relates to a knife assembly and a food processor. The food processor uses a knife assembly with this structure, which can be quickly and easily assembled or disassembled from the rotating shaft through the cooperation of the spiral groove and the convex shaft. The disassembled knife assembly can be cleaned more thoroughly and cleanly. The rotation direction of the rotating shaft is used to maintain the engagement with the knife assembly. It has the advantages of simple structure, few parts, low processing cost, quick assembly and disassembly, durability and high connection reliability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an embodiment of the cutting tool assembly in this utility model.

[0021] Figure 2 This is an exploded view of the cutting tool assembly in this utility model.

[0022] Figure 3 This is a schematic diagram of the connecting sleeve structure in this utility model.

[0023] Figure 4 This is a schematic diagram of another embodiment of the fastening sleeve in this utility model.

[0024] Figure 5 This is a cross-sectional exploded view of the cutting tool assembly in this utility model.

[0025] Figure 6 This is a schematic diagram of an embodiment of the food processor of this utility model. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] refer to Figures 1 to 5 As shown, the tool assembly includes a rotating shaft 1 and a tool 2. The tool 2 includes a blade shaft 3 and a stirring blade assembly 4 connected to the blade shaft 3. The lower part of the blade shaft 3 is provided with a bushing 5. The bushing 5 has two or more spiral grooves 51 that enter and exit from the bottom end. The spiral grooves 51 spiral upward in the same direction as the rotation direction of the rotating shaft 1. The side wall of the rotating shaft 1 is provided with a convex shaft 6 corresponding to the spiral grooves 51. By the bushing 5 being nested in the upper part of the rotating shaft 1 and the blade shaft 3 being rotated, the convex shaft 6 is engaged with the end of the spiral groove 51, so that the tool 2 can be detachably installed on the rotating shaft 1.

[0028] This food processor uses a blade assembly with this structure, which can be quickly and easily assembled or disassembled from the rotating shaft 1 by cooperating with the spiral groove 51 and the convex shaft 6. The disassembled blade assembly can be cleaned more thoroughly and cleanly. The rotating direction of the rotating shaft 1 is used to maintain the engagement with the blade assembly. It has the advantages of simple structure, few parts, low processing cost, quick assembly and disassembly, durability and high connection reliability.

[0029] The end of the spiral groove 51 is provided with a contact surface 511 that engages with the convex shaft 6. The contact surface 511 has a curved surface structure that is wider on the outside and narrower on the inside. The inner width of the contact surface 511 can be equal to or less than the diameter of the convex shaft 6, so that the convex shaft 6 can be interference-fitted into the contact surface 511 of the curved surface structure, making the engagement more secure and stable. Even if the rotating shaft 1 stops rotating instantly, the tool 2 will not cause the convex shaft 6 to leave the contact surface 511 due to inertia, thus preventing the tool 2 from becoming loose.

[0030] The inlet 512 of the spiral groove 51 passes through the bottom edge of the bushing 5, and the width of the inlet 512 narrows linearly along the screwing direction of the cam 6; the inlet 512 of the spiral groove 51 described above is funnel-shaped, which helps the cam 6 to be inserted and improves the assembly efficiency of the tool 2.

[0031] The blade shaft 3 includes a fastening sleeve 7 and a connecting sleeve 8 that fit around the upper and lower parts of the rotating shaft 1. The lower part of the connecting sleeve 8 forms a bushing 5, and a lower step surface 801 is provided on the upper side of the bushing 5. The stirring blade assembly 4 is sleeved on the outside of the connecting sleeve 8 and is fastened to the upper part of the connecting sleeve 8 by the fastening sleeve 7, so that the stirring blade assembly 4 is limited between the lower step surface 801 and the fastening sleeve 7. This structure allows the blade 2 to be disassembled into three independent parts, so that cleaning is more thorough and there are no dead corners that cannot be cleaned in the blade assembly, effectively avoiding the growth of bacteria and the generation of odors.

[0032] The upper part of the connecting sleeve 8 is provided with an external thread 802, and the lower part of the fastening sleeve 7 is provided with an internal thread 701 corresponding to the external thread 802. The fastening sleeve 7 and the connecting sleeve 8 are screwed together by the cooperation of the internal thread 701 and the external thread 802. The fastening sleeve 7 and the connecting sleeve 8 are screwed together by a threaded structure, which is simple in structure, firm in connection, and easy to assemble and disassemble.

[0033] The fastening sleeve 7 has an upper stepped surface 702 on the upper side of the internal thread 701. A rubber ring 9 is provided on the upper stepped surface 702. After the fastening sleeve 7 and the connecting sleeve 8 are screwed together, the rubber ring 9 is pressed between the upper stepped surface 702 and the upper edge of the connecting sleeve 8.

[0034] This structure uses a rubber ring 9 to create a tight fit between the cutter shaft 3 and the rotating shaft 1. Specifically, when screwed onto the connecting sleeve 8, the fastening sleeve 7 and the connecting sleeve 8 flatten the rubber ring 9, and the protruding part of the rubber ring 9 abuts against the outer wall surface of the cutter shaft 3, increasing the friction between the cutter shaft 3 and the rotating shaft 1, thereby achieving a tight fit. This makes the connection between the cutter 2 and the rotating shaft 1 more stable and less likely to loosen upwards, even when the convex shaft 6 and the contact surface 511 only form a clearance fit.

[0035] The upper part of the outer side wall of the fastening sleeve 7 is provided with a pick-up and put-out anti-slip groove 703; the lower part of the outer side wall of the fastening sleeve 7 is provided with a plurality of screw-on anti-slip recesses 704. When the tool 2 is removed from the rotating shaft 1, when the user lifts the tool 2 upwards, the pick-up and put-out anti-slip groove 703 plays a circumferential anti-slip role. When the user rotates circumferentially to screw the fastening sleeve 7 out and into the connecting sleeve 8, the screw-on anti-slip recesses 704 play a circumferential anti-slip role.

[0036] In more embodiments, refer to Figure 4 As shown, the top port of the fastening sleeve 7 forms a hexagonal hole 705. When the fastening strength between the cutter 2 and the rotating shaft 1, or between the fastening sleeve 7 and the connecting sleeve 8, is high, the entire cutter 2 or fastening sleeve 7 can be rotated using tools such as hexagonal keys, thereby achieving disassembly.

[0037] The stirring blade assembly 4 has a non-circular hole 401 at its center. In this embodiment, the non-circular hole 401 is a square hole with four edges 402. The connecting sleeve 8 or the external threaded part 802 has four facets 803 corresponding to the edges 402. The facets 803 cooperate with the edges 402 to orient the stirring blade assembly 4 onto the connecting sleeve 8, so that the stirring blade assembly 4 can be rotated when the blade shaft 3 rotates.

[0038] The bushing 5 has two spiral grooves 51; the bushing 5 has two anti-slip end faces 501 between the two spiral grooves 51, and the two anti-slip end faces 501 are arranged facing opposite directions; when the tool 2 is removed from the rotating shaft 1, the two anti-slip end faces 501 can prevent the user's fingers from slipping, making it easy to install and tighten the bushing 5.

[0039] The mixing blade assembly 4 includes a blade holder 41 and several blades integrally connected to the periphery of the blade holder 41. Each blade has a cutting edge 403 on one side. The several blades include an upper blade 42 that is partially inclined upwards, a lower blade 43 that is partially inclined downwards, and a flat blade 44 that is partially horizontally arranged. The upper blade 42, lower blade 43, and flat blade 44 are alternately arranged on the blade holder 41. The upper blade 42, lower blade 43, and flat blade 44 can chop ingredients of different heights. Through the cooperation of the upper blade 42, lower blade 43, and flat blade 44, the ingredients pulverized by the food processor can be made to be more uniform in size.

[0040] Food processor, for reference Figure 6 As shown, the device includes a base assembly 10 and a cup assembly 11 mounted on the base assembly 10, and also includes a cutting tool assembly as described in any of the above claims. The base assembly 10 has a motor 13, a power output shaft 12 connected to the motor 13, and the top end of the power output shaft 12 extends into the cup assembly 11. The cutting tool assembly is located inside the cup assembly 11 and is detachably mounted on the power output shaft 12.

[0041] In this embodiment, the top end of the power output shaft 12 is provided with a threaded connection hole 121, and the bottom end of the cutter shaft 1 is provided with a threaded post 14, so that the cutter shaft 1 can be detachably installed on the power output shaft 12 by engaging with the threaded connection hole 121 through the threaded post 14.

[0042] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A tool assembly comprising a rotating shaft (1) and a tool (2), characterized in that: The cutting tool (2) includes a cutting shaft (3) and a stirring blade assembly (4) connected to the cutting shaft (3). The cutting shaft (3) has a bushing (5) at its lower part. The bushing (5) has two or more spiral grooves (51) that enter and exit from the bottom. The spiral grooves (51) spiral upward in the same direction as the rotation direction of the rotating shaft (1). The side wall of the rotating shaft (1) is provided with a convex shaft (6) corresponding to the spiral groove (51). By nesting the bushing (5) on the upper part of the rotating shaft (1) and rotating the cutting shaft (3), the convex shaft (6) is inserted into the end of the spiral groove (51), so that the cutting tool (2) can be detachably installed on the rotating shaft (1).

2. The cutting tool assembly according to claim 1, characterized in that: The end of the spiral groove (51) is provided with a contact surface (511) that engages with the convex shaft (6). The contact surface (511) has a curved surface structure that is wider on the outside and narrower on the inside. The inlet (512) of the spiral groove (51) passes through the bottom edge of the bushing (5), and the width of the inlet (512) is linearly narrowed along the spiral shaft (6) in the spiral direction.

3. The cutting tool assembly according to claim 1, characterized in that: The blade shaft (3) includes a fastening sleeve (7) and a connecting sleeve (8) that fit into the upper and lower parts of the rotating shaft (1). The lower part of the connecting sleeve (8) forms a bushing (5), and a lower step surface (801) is provided on the upper side of the bushing (5). The stirring blade assembly (4) is sleeved outside the connecting sleeve (8) and is fastened to the upper part of the connecting sleeve (8) by the fastening sleeve (7), so that the stirring blade assembly (4) is limited to the lower step surface (801) and the fastening sleeve (7).

4. The cutting tool assembly according to claim 3, characterized in that: The upper part of the connecting sleeve (8) is provided with an external thread (802), and the lower part of the fastening sleeve (7) is provided with an internal thread (701) corresponding to the external thread (802). The fastening sleeve (7) and the connecting sleeve (8) are screwed together by the cooperation of the internal thread (701) and the external thread (802).

5. The cutting tool assembly according to claim 4, characterized in that: The fastening sleeve (7) has an upper stepped surface (702) on the upper side of the internal thread (701), and a rubber ring (9) is provided on the upper stepped surface (702). After the fastening sleeve (7) and the connecting sleeve (8) are screwed together, the rubber ring (9) is pressed between the upper stepped surface (702) and the upper edge of the connecting sleeve (8).

6. The cutting tool assembly according to claim 3, characterized in that: The upper part of the outer side wall of the fastening sleeve (7) is provided with a non-slip groove (703); the lower part of the outer side wall of the fastening sleeve (7) is provided with a plurality of screw-on non-slip recesses (704), or the top end of the fastening sleeve (7) is formed with a hexagonal hole (705).

7. The cutting tool assembly according to claim 3, characterized in that: The stirring blade assembly (4) has a non-circular hole (401) at its center. The non-circular hole (401) has at least one edge (402). The connecting sleeve (8) or the part with external threads (802) has several facets (803) corresponding to the edge (402). The facets (803) cooperate with the edge (402) to make the stirring blade assembly (4) oriented and fitted onto the connecting sleeve (8).

8. The cutting tool assembly according to claim 1, characterized in that: The bushing (5) has two spiral grooves (51); the bushing (5) has two anti-slip end faces (501) between the two spiral grooves (51), and the two anti-slip end faces (501) are arranged facing opposite directions.

9. The cutting tool assembly according to claim 1, characterized in that: The stirring blade assembly (4) includes a blade holder (41) and several blades integrally connected to the periphery of the blade holder (41). One side of each blade has a cutting edge (403). The several blades include an upper blade (42) that is partially inclined upward, a lower blade (43) that is partially inclined downward, and a flat blade (44) that is partially horizontal. The upper blade (42), the lower blade (43), and the flat blade (44) are alternately arranged on the blade holder (41).

10. A food processor, comprising a base assembly (10) and a cup assembly (11) mounted on the base assembly (10), characterized in that: It also includes a cutting tool assembly as described in any one of claims 1 to 9, wherein the base assembly (10) has a power output shaft (12) therein and the top end of the power output shaft (12) extends into the cup body assembly (11), the cutting tool assembly is located in the cup body assembly (11) and the cutting tool assembly is detachably mounted on the power output shaft (12).

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