Food chopper blade assembly and food chopper

Abstract

The utility model provides a food chopper blade assembly and food chopper, the blade assembly comprises a main shaft made of plastics, a plurality of blades, a plastic support sleeve and a metal protective sleeve, the plurality of blades are sleeved on the main shaft at intervals, the plastic support sleeve is sleeved on the main shaft and arranged between the adjacent blades, and the metal protective sleeve is sleeved on the main shaft. The plastic supporting sleeve is sleeved with the metal protecting sleeve, the bottom end of the main shaft is connected with a bottom shaft connecting piece, the bottom shaft connecting piece is a metal piece, the bottom shaft connecting piece wraps the bottom end of the main shaft, and the bottom shaft connecting piece and the main shaft form an integrated structure through the injection molding technology. The bottom shaft connecting piece of a metal structure is arranged at the bottom end of the main shaft, the bottom end of the main shaft can be prevented from making contact with food when the food chopper is used, the bottom end of the main shaft is prevented from being dyed, oxidized or corroded, and food safety is improved; in addition, the bottom shaft connecting piece and the main shaft are formed into an integrated structure through the injection molding technology, the structure is firm and not prone to loosening, and due to the fact that the waterproof effect of the integrated structure is excellent, silica gel and the like do not need to be additionally arranged for water prevention.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and in particular to a food chopper blade assembly and a food chopper. Background Art

[0002] Food choppers have been widely used due to their simple structure and easy operation. Food choppers generally include a cup body and a blade assembly, and the blade assembly includes a main shaft, a blade, a sleeve, etc. The above parts are basically made of plastic. During use, plastic parts are easily oxidized and not corrosion-resistant. When making some colored ingredients, they are also easily stained and difficult to clean, which is not conducive to food safety.

[0003] The utility model patent with the authorization announcement number CN220371191U discloses a blade assembly for a food chopper, in which a metal sleeve is arranged outside the sleeve between the blades to wrap the sleeve, which can prevent the plastic from being corroded and stained, and to a certain extent improve the problems existing in the existing blade assembly. However, in the blade assembly, the part where the main shaft and the rotating shaft at the bottom of the cup body are connected does not have a metal wrapping layer, and the problem of corrosion and staining still exists. Utility Model Content

[0004] The utility model aims to provide a food chopper blade assembly and a food chopper with better food safety.

[0005] In order to achieve the above objectives, the utility model provides the following technical solutions:

[0006] The utility model provides a food chopper blade assembly, including a main shaft made of plastic, a plurality of blades, a plastic support sleeve and a metal protective sleeve, wherein the plurality of blades are sleeved on the main shaft at intervals, the plastic support sleeve is sleeved on the main shaft and arranged between adjacent blades, the metal protective sleeve is sleeved on the outside of the plastic support sleeve, and the bottom end of the main shaft is connected to a bottom shaft connecting piece, which is a metal piece, which wraps the bottom end of the main shaft and forms an integrated structure with the main shaft through an injection molding process.

[0007] In one of the embodiments, a bottom shaft mounting hole is provided in the middle of the bottom end of the main shaft, the bottom shaft mounting hole is used to insert the supporting shaft on the cup body, and a flange is provided on the outer periphery of the main shaft; the bottom shaft connecting part includes an integrally formed metal bottom sleeve and a metal inlaid tube, the metal bottom sleeve is provided with a clearance hole corresponding to the bottom shaft mounting hole, the metal inlaid tube is arranged on the inner side of the metal bottom sleeve around the clearance hole, an embedding groove is defined between the metal inlaid tube and the side wall of the metal bottom sleeve, the metal inlaid tube is inserted into the bottom shaft mounting hole of the main shaft, and the flange of the main shaft is placed in the embedding groove and pressed against the inner side wall of the metal bottom sleeve.

[0008] In one embodiment, one end of the metal inlay tube away from the metal bottom sleeve is turned outward to form a first undercut that is inserted into the main shaft.

[0009] In one embodiment, the metal bottom sleeve is provided with a first guiding inclined surface surrounding the clearance hole, and the first guiding inclined surface is connected to and communicated with the clearance hole.

[0010] In one embodiment, the bottom shaft mounting hole includes an axially connected inlay portion and a support shaft matching portion, the inlay portion is formed by an inward extension of the end surface of the bottom end of the main shaft, the metal inlay tube is arranged in the inlay portion, and the support shaft matching portion is a plastic structure of the main shaft exposed to the metal inlay tube, which is used to cover the end of the support shaft passing through the metal inlay tube.

[0011] In one embodiment, the bottom shaft mounting hole further includes an introduction portion, the introduction portion is connected between the embedding portion and the supporting shaft matching portion, and the introduction portion is provided with a second guiding inclined surface.

[0012] In one embodiment, the blade assembly includes an anti-overflow cap disposed at the top end of the main shaft, and the anti-overflow cap is used to be disposed between the main shaft and a driving device of the food chopper.

[0013] In one embodiment, the overflow prevention cap includes a metal cap body and a plastic plug-in column, the metal cap body includes a bowl-shaped main body and a sleeve formed by an upward arch in the middle of the bowl-shaped main body, one end of the plastic plug-in column is inserted into the sleeve, and the other end of the plastic plug-in column is connected to the top of the main shaft, and the metal cap body and the plastic plug-in column form an integrated structure through an injection molding process.

[0014] In one embodiment, a driving hole for connecting a driving device is formed at the top of the sleeve, and the top of the sleeve is folded inward along the driving hole to form a second undercut inserted into the plastic plug-in column.

[0015] The utility model also provides a food chopper, comprising a cup body, a driving device and the food chopper blade assembly. The blade assembly is arranged in the cup body and connected to the driving device.

[0016] The beneficial effects brought by the technical solution provided by the utility model are:

[0017] 1. The blade assembly of the utility model is provided with a bottom shaft connector of a metal structure at the bottom end of the main shaft, which can prevent the bottom end of the main shaft from contacting with food when the food chopper is in use, and prevent the bottom end of the main shaft from being stained, oxidized or corroded, thereby improving food safety; in addition, the bottom shaft connector and the main shaft are formed into an integrated structure through an injection molding process, and the structure is firm and not easy to loosen.

[0018] 2. The blade assembly of the present utility model adopts an integrally injection-molded structure, in which each hardware kit is embedded in a plastic mold for integral molding, effectively avoiding the phenomenon that food enters the gap between the hardware and plastic parts, resulting in food odor and difficult cleaning. Moreover, there is no need to separately set up a silicone or other caulking process for waterproofing, which is simple, efficient, has extremely low cost, and is easy for mass production.

[0019] 3. In the blade assembly of the present utility model, a structure in which the hardware is embedded and placed in an injection mold for integral molding is adopted. There is no high requirement for the thickness of the material of the metal outer wall, and no large wall thickness is needed, because its assembly performance and strength requirements can be completed independently by plastic parts. Therefore, the wall thickness of its metal parts can be as thin as 0.2 mm to 0.50 mm, greatly reducing the weight of the tool assembly. Therefore, it is also more conducive to the effective load of the motor, increasing power and service life.

[0020] 4. Compared with the existing hardware knife sets formed solely by assembly, in addition to excellent waterproof ability, lighter weight, and higher production efficiency, the hardware parts of the present utility model are directly processed by a sheet metal stretching process, and its rust prevention ability is far superior to that of metal parts formed by powder metallurgy and forging.

[0021] 5. In the blade assembly of the present utility model, for the top and bottom hardware parts, reverse buckling structures are provided inside both the hardware parts and the plastic parts. In this way, the hardware parts and the plastic parts form a more reliable physical integral structure, and the intermediate assembled parts can form a fixed structure depending on the top, bottom, and the blade. Its assembly is simple and reasonable, has a longer service life, and is more reliable.

[0022] 6. The existing integrally injection-molded technology of hardware and plastic is usually applied to fastening structures, such as screw post structures, and usually achieves the effect of more reliable fastening and convenient disassembly. The present utility model creatively introduces this integrally injection-molded structure of hardware and plastic into the field of knife sets, greatly improving the waterproof ability of the blade assembly and the service life of the knife set. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments of the present utility model.

[0024] Figure 1 is a three-dimensional view of the food chopper blade assembly provided by an embodiment of the present utility model;

[0025] Figure 2 is Figure 1 a partial exploded view of the food chopper blade assembly shown;

[0026] Figure 3 is Figure 1 a cross-sectional view of the food chopper blade assembly shown;

[0027] Figure 4 A perspective view of the bottom shaft connector provided by an embodiment of the present utility model;

[0028] Figure 5 A cross-sectional view of the metal cap body in the anti-overflow cap provided by an embodiment of the present utility model. Specific embodiments

[0029] Embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present utility model. It should be understood that the drawings and embodiments of the present utility model are only for exemplary purposes and are not used to limit the protection scope of the present utility model.

[0030] It should be understood that the various steps recorded in the method embodiments of the present utility model can be executed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present utility model is not limited in this regard.

[0031] The term "including" and its variants used herein are open-ended, that is, "including but not limited to". The term "connection" can be a direct connection or an indirect connection through an intermediate component (element). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0032] It should be noted that the concepts such as "first" and "second" mentioned in the present utility model are only used to distinguish devices, modules or units, and are not used to limit that these devices, modules or units must be different devices, modules or units, nor are they used to limit the order or interdependence relationship of the functions executed by these devices, modules or units.

[0033] See Figures 1 to 5 , the present utility model relates to a food chopper blade assembly (hereinafter referred to as "blade assembly 100") and a food chopper using the blade assembly 100. The blade assembly 100 is not easily oxidized and corroded during use, and is also easy to clean after making colored ingredients, avoiding food residue and being stained by ingredients, and having good food safety. It can be understood that in addition to the blade assembly 100, the food chopper also has a cup body and a driving device. The blade assembly is placed in the cup body and connected to the driving device, and the driving device drives the rotation to chop the food in the cup body.

[0034] The blade assembly 100 includes a main shaft 1, a plurality of blades 2, a plastic support sleeve 3, a metal protective sleeve 4, a splash-proof cap 5, and a bottom shaft connector 6.

[0035] The main shaft 1 is made of plastic and is generally a regular polygonal cylinder, which is beneficial to improving the reliability of product use and avoiding the situation of transmission failure. A bottom shaft mounting hole 110 is formed in the middle of the bottom end of the main shaft 1. The bottom shaft mounting hole 110 is used for inserting a support shaft made of metal on the cup body to support the main shaft 1 and enable the main shaft 1 to rotate around the support shaft. A flange 11 extends radially outward from the outer periphery of the bottom end of the main shaft 1.

[0036] The blade 2 is a metal blade 2, and its shape is preferably arc-shaped. The plurality of blades 2 are sleeved on the main shaft 1 at intervals.

[0037] The plastic support sleeve 3 is sleeved on the main shaft 1, and the plastic support sleeve 3 is arranged between adjacent two blades 2 to support the blade 2 and prevent the blade 2 from tilting.

[0038] The metal protective sleeve 4 is sleeved outside the plastic support sleeve 3 to protect the plastic support sleeve 3. On the one hand, it prevents the plastic support sleeve 3 from being corroded and stained, and on the other hand, it also enhances the mechanical strength of the blade assembly 100.

[0039] The splash-proof cap 5 is connected to the top end of the main shaft 1 to prevent the water or food splashed during the rotation of the blade assembly 100 from spraying upward into the driving device, improving the reliability and safety of product use.

[0040] The bottom shaft connector 6 is made of metal. It wraps the bottom end of the main shaft 1 and is integrally formed with the main shaft 1 through an injection molding process.

[0041] By providing the bottom shaft connector 6 with a metal structure at the bottom end of the main shaft 1, it can prevent the bottom end of the main shaft 1 from contacting food during the use of the food chopper, avoiding the bottom end of the main shaft 1 from being stained, oxidized or corroded, and improving food safety. In addition, the bottom shaft connector 6 and the main shaft 1 are integrally formed through an injection molding process, with a firm structure and not easy to loosen.

[0042] In one implementation, the bottom shaft connector 6 includes an integrally formed metal bottom sleeve 61 and a metal inlay cylinder 62. The metal bottom sleeve 61 is provided with a relief hole 60 corresponding to the bottom shaft mounting hole 110. The metal inlay cylinder 62 is arranged inside the metal bottom sleeve 61 around the relief hole 60. A slot is defined between the metal inlay cylinder 62 and the side wall of the metal bottom sleeve 61. The metal inlay cylinder 62 is inserted into the bottom shaft mounting hole 110 of the main shaft 1, and the flange 11 of the main shaft 1 is placed in the slot and abuts against the inner side wall of the metal bottom sleeve 61.

[0043] During processing, the bottom shaft connecting member 6 can be pre-processed by hardware, and then the hardware and the main shaft 1 are placed in a mold for integral injection molding to form an integrated structure, with a firm connection structure to avoid loosening.

[0044] Further, one end of the metal inlay cylinder 62 away from the metal bottom sleeve 61 is flanged outward to form a first reverse buckle 621. After the bottom shaft connecting member 6 and the main shaft 1 are injection molded, the first reverse buckle 621 is embedded in the main shaft 1, making the combination of the bottom shaft connecting member 6 and the main shaft 1 more firm and preventing loosening.

[0045] In one implementation, the metal bottom sleeve 61 is provided with a first guiding inclined surface 611 around the relief hole 60, and the first guiding inclined surface 611 is connected to and communicates with the relief hole 60.

[0046] In one implementation, the bottom shaft mounting hole 110 includes an inlay part and a support shaft fitting part that are axially connected. The inlay part extends inward from the bottom end surface of the main shaft 1, and the metal inlay cylinder 62 is disposed in the inlay part, thereby forming a metal wrapping layer inside the bottom end of the main shaft 1 to prevent food from staining the inner side of the bottom end of the main shaft and facilitating the cleaning of the main shaft. The support shaft fitting part is a plastic structure exposed outside the metal inlay cylinder inside the main shaft. When the blade assembly is mounted on the support shaft of the cup body, the support shaft fitting part sleeves the end of the support shaft protruding from the end of the metal inlay cylinder, making the fit between the main shaft and the support shaft a plastic-to-metal fit. The main shaft is more wear-resistant, and the noise generated during the relative rotation between the support shaft and the main shaft is also reduced, improving the user experience when using the food chopper to chop food.

[0047] Further, to facilitate the assembly of the support shaft and the main shaft, the bottom shaft mounting hole 110 further has a guiding part, which is connected between the inlay part and the support shaft fitting part and is provided with a second guiding inclined surface 111. By providing the second guiding inclined surface 111, it is convenient for the support shaft to enter the support shaft fitting part and facilitates the assembly of the support shaft and the blade assembly 100.

[0048] It can be understood that when the support shaft is assembled with the blade assembly 100, the end of the support shaft away from the cup body sequentially passes through the first guiding inclined surface 611, the relief hole 60, and the second guiding inclined surface 111 and is inserted into the support shaft fitting part.

[0049] In one implementation, the anti-overflow cap 5 includes a metal cap body 51 and a plastic insertion post 52. The metal cap body 51 includes a bowl-shaped main body 511 and a sleeve body 512 formed by arching upward from the middle of the bowl-shaped main body 511. One end of the plastic insertion post 52 is inserted into the sleeve body 512, and the other end of the plastic insertion post 52 is connected to the top end of the main shaft 1.

[0050] In one embodiment, the metal cap body 51 and the plastic plug post 52 are integrally formed by an injection molding process.

[0051] In one embodiment, a driving hole for connecting a driving device is formed at the top end of the sleeve body 512. The top end of the sleeve body 512 is folded inward along the driving hole to form a second reverse buckle 5121 inserted into the plastic plug post 52.

[0052] By setting the overflow prevention cap 5 as a metal-plastic integrated structure, it is convenient to clean the overflow prevention cap 5, and the structure of the overflow prevention cap 5 is relatively firm and reliable.

[0053] Furthermore, in some of the embodiments, the integral injection molding anti-detachment structure of the hardware and plastic parts includes flanging, and methods such as punching holes and setting stepped reverse buckles in the hardware.

[0054] Preferably, in one embodiment, the metal protective sleeve, the bottom shaft connecting piece, and the metal cap body of the overflow prevention cap are processed by a sheet metal stretching process, having good rust prevention performance.

[0055] The above description is only the preferred embodiments of the present invention and the description of the applied technical principles. Those skilled in the art should understand that the scope of the present invention involved herein is not limited to the technical solutions formed by the specific combination of the above technical features. At the same time, it should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by the mutual replacement of the above features and the technical features (but not limited to) having similar functions in the present invention.

[0056] Although the subject matter has been described in language specific to structural features and / or methodological acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. On the contrary, the specific features and acts described above are merely example forms for implementing the claims.

Claims

1. A food chopper blade assembly, comprising a main shaft made of plastic, a plurality of blades, a plastic support sleeve and a metal protective sleeve. The plurality of blades are spacedly sleeved on the main shaft. The plastic support sleeve is sleeved on the main shaft and arranged between adjacent blades. The metal protective sleeve is sleeved outside the plastic support sleeve, characterized in that, A bottom shaft connecting piece is connected to the bottom end of the main shaft. The bottom shaft connecting piece is a metal piece, which wraps the bottom end of the main shaft and forms an integrated structure with the main shaft through an injection molding process.

2. The food chopper blade assembly according to claim 1, wherein, A bottom shaft mounting hole is provided in the middle of the bottom end of the main shaft. The bottom shaft mounting hole extends from the bottom end to the top end of the main shaft and is used for inserting a support shaft on the cup body. A flange is provided on the outer periphery of the main shaft. The bottom shaft connecting piece includes an integrally formed metal bottom sleeve and a metal inlay cylinder. The metal bottom sleeve is provided with a relief hole corresponding to the bottom shaft mounting hole. The metal inlay cylinder is arranged inside the metal bottom sleeve around the relief hole. A groove is defined between the metal inlay cylinder and the side wall of the metal bottom sleeve. The metal inlay cylinder is inserted into the bottom shaft mounting hole of the main shaft, and the flange of the main shaft is placed in the groove and abuts against the inner side wall of the metal bottom sleeve.

3. The food chopper blade assembly according to claim 2, wherein, One end of the metal inlay cylinder away from the metal bottom sleeve is flanged outward to form a first reverse buckle inserted into the main shaft.

4. The food chopper blade assembly according to claim 2, wherein, The metal bottom sleeve is provided with a first guiding inclined surface around the relief hole. The first guiding inclined surface is connected to and communicates with the relief hole.

5. The food chopper blade assembly according to claim 2, wherein, The bottom shaft mounting hole includes an inlay part and a support shaft fitting part that are axially connected. The inlay part extends inward from the end surface of the bottom end of the main shaft. The metal inlay cylinder is arranged in the inlay part. The support shaft fitting part is a plastic structure of the main shaft exposed outside the metal inlay cylinder and is used for sleeving the end part of the support shaft protruding from the metal inlay cylinder.

6. The food chopper blade assembly according to claim 5, characterized in that, The bottom shaft mounting hole further includes a guiding part, and the guiding part is connected between the inlay part and the support shaft fitting part. The guiding part is provided with a second guiding inclined surface.

7. The food chopper blade assembly according to claim 1, wherein, An anti-overflow cap is further provided at the top end of the main shaft. The anti-overflow cap is used to be arranged between the main shaft and the driving device of the food chopper.

8. The food chopper blade assembly according to claim 7, characterized in that, The anti-overflow cap includes a metal cap body and a plastic plugging column. The metal cap body includes a bowl-shaped main body and a sleeve body formed by arching upward from the middle of the bowl-shaped main body. One end of the plastic plugging column is plugged in the sleeve body, and the other end of the plastic plugging column is connected to the top end of the main shaft. The metal cap body and the plastic plugging column form an integrated structure through an injection molding process.

9. The food chopper blade assembly according to claim 8, characterized in that, A driving hole for connecting the driving device is opened at the top end of the sleeve body. The top end of the sleeve body is folded inward along the driving hole to form a second reverse buckle inserted into the plastic plugging column.

10. A food chopper, comprising a cup body, a driving device, and a blade assembly disposed in the cup body and connected to the driving device, characterized in that, The blade assembly is the food chopper blade assembly according to any one of claims 1 to 9.

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