A cup body of a mincing cup

Abstract

This utility model discloses a chopping cup body, including a cup body and a cup lid that fits onto the cup mouth of the cup body. A drive shaft is rotatably mounted on the cup lid, and a first connector is provided at the lower end of the drive shaft. A support member is provided at the bottom of the cup body, and a cutter shaft is provided inside the cup body. A second connector is provided at the upper end of the cutter shaft, which mates with the first connector to enable the drive shaft to drive the cutter shaft to rotate. A gap is left between the first connector and the second connector. The lower end of the cutter shaft is inserted into the support member, and the two are rotatably engaged. A gap is left between the cutter shaft and the support member. This structure allows for certain radial and angular deviations between the cutter shaft and the drive shaft, reducing the stringent requirements on the machining accuracy and assembly coaxiality of parts. It can reduce dependence on part precision, improve operational stability, reduce noise, and improve production efficiency and product yield.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a chopping cup body. Background Technology

[0002] Chopping cups, a common kitchen appliance, are convenient and safe for chopping food within a sealed container, making them popular among users. However, traditional chopping cups have certain structural design flaws, particularly in the power transmission section, which often uses rigid connections. For example, the adapter between the cutter shaft and the drive shaft is frequently a pressure fit or interference fit. This structure demands extremely high precision in component machining and assembly processes. Due to accumulated errors during machining and shrinkage deformation during injection molding, it is difficult to ensure coaxiality between the cutter shaft and the drive shaft. In actual use, coaxiality deviations lead to rotational imbalance, causing severe vibration of the entire machine. This not only affects the user experience but also generates significant noise, reducing the overall user experience. Furthermore, prolonged operation in a vibrating environment can accelerate component wear and shorten the product's lifespan.

[0003] Therefore, there is an urgent need for a chopping cup body that can reduce dependence on component precision, improve operational stability, and reduce noise. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a chopping cup body that can reduce dependence on the precision of parts, improve operational stability and reduce noise.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A chopping cup includes a cup body and a cup lid that covers the mouth of the cup body. A drive shaft is rotatably mounted on the cup lid. The lower end of the drive shaft is provided with a first connector. A support member is provided at the bottom of the cup body. A blade shaft is provided inside the cup body. The upper end of the blade shaft is provided with a second connector that mates with the first connector so that the drive shaft can drive the blade shaft to rotate. A gap is left between the first connector and the second connector. The lower end of the blade shaft is inserted into the support member and the two are rotatably engaged. A gap is left between the blade shaft and the support member.

[0007] In a preferred embodiment of this utility model, the first connector is a female connector and the second connector is a male connector. The surface of the male connector is provided with a spline, and the inner sidewall of the female connector is provided with a keyway that mates with the spline. A gap is left between the surface of the keyway and the surface of the spline.

[0008] In a preferred embodiment of this utility model, the spline includes multiple key bodies, the inner surface of one side of the keyway is a plane parallel to the corresponding key body, the inner surface of the other side of the keyway is an inclined guide surface, and the width of the keyway gradually decreases from bottom to top.

[0009] In a preferred embodiment of this utility model, the guide surface is a spiral inclined surface.

[0010] In a preferred embodiment of this utility model, the lower end of the cutter shaft is provided with an insertion hole, the support member is rod-shaped, the upper end of the support member is inserted into the insertion hole, and a gap is left between the support member and the inner sidewall of the insertion hole.

[0011] In a preferred embodiment of this utility model, the upper end of the support member has an outwardly convex arc surface, which abuts against the end of the insertion hole.

[0012] In a preferred embodiment of this utility model, the bottom of the cup body is provided with a mounting hole, the lower part of the support member is inserted into the mounting hole and is interference-fitted with the inner sidewall of the mounting hole, and a force-bearing step is provided on the outer sidewall of the support member, the step surface of the force-bearing step is facing upward and the step surface is not lower than the upper port of the mounting hole.

[0013] In a preferred embodiment of this utility model, the mounting hole has a limiting step that can abut against the lower end face of the support member, and the lower end of the mounting hole also has an inspection hole into which a rod-shaped tool can be inserted.

[0014] In a preferred embodiment of this utility model, the cup lid is provided with a rotatable central shaft, the upper end of the central shaft is provided with a shaft coupling component, and a reducer is connected between the central shaft and the transmission shaft.

[0015] The beneficial effects of this invention are as follows: In this design, since both ends of the cutter shaft are movably mounted, the blades on it can chop the food inside the cup when the cutter shaft rotates. Furthermore, the cutter shaft can automatically find its balance position under centrifugal force, achieving dynamic self-centering. This greatly improves rotational balance, avoids vibration and noise problems caused by insufficient coaxiality, and makes the equipment run more smoothly and quietly, enhancing user comfort. In addition, this structure allows for certain radial and angular deviations between the cutter shaft and the drive shaft, reducing the stringent requirements on the machining accuracy and assembly coaxiality of parts. This effectively reduces assembly difficulties caused by cumulative errors, improving production efficiency and product yield. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the cup body of this utility model;

[0017] Figure 2 This is a three-dimensional view of the first connector;

[0018] Figure 3 This is an exploded view of the tool shaft mounting structure;

[0019] Figure 4 yes Figure 1 Enlarged view of section A;

[0020] Figure 5 This is a cross-sectional view of the chopping cup. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly. Furthermore, descriptions involving "preferred," "second-preferred," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "preferred" or "second-preferred" may explicitly or implicitly include at least one of those features.

[0023] Reference Figures 1 to 4This utility model proposes a chopping cup body, including a cup body 1 and a cup lid 2 that fits over the mouth of the cup body 1. A drive shaft 31 is rotatably mounted on the cup lid 2. The lower end of the drive shaft 31 has a first connector 32. A support member 4 is provided at the bottom of the cup body 1. A blade shaft 33 is provided inside the cup body 1. A blade is mounted on the blade shaft 33. The upper end of the blade shaft 33 has a second connector 34 that mates with the first connector 32 so that the drive shaft 31 can drive the blade shaft 33 to rotate. The blade shaft 33 and the second connector 34 can be an integral structure or fixed by welding, screwing, etc. The drive shaft 31 and the first connector 32 can be an integral structure or fixed by welding, screwing, etc. A gap is left between the first connector 32 and the second connector 34. The lower end of the blade shaft 33 is inserted into the support member 4 and the two are rotatably engaged. A gap is left between the blade shaft 33 and the support member 4. With this configuration, both ends of the cutter shaft 33 are movably mounted. When the cutter shaft 33 rotates, its blades shred the food inside the cup. Furthermore, the cutter shaft 33 automatically finds its equilibrium position under centrifugal force, achieving dynamic self-centering. This significantly improves rotational balance, avoiding vibration and noise issues caused by insufficient coaxiality, resulting in smoother and quieter operation and enhanced user comfort. Additionally, this structure allows for certain radial and angular deviations between the cutter shaft 33 and the drive shaft 31, reducing the stringent requirements on component machining accuracy and assembly coaxiality. This effectively reduces assembly difficulties caused by cumulative errors, improving production efficiency and product yield.

[0024] In a preferred embodiment of this utility model, the first connector 32 is a female connector, and the second connector 34 is a male connector. The surface of the male connector is provided with a spline 341, and the inner sidewall of the female connector is provided with a keyway 321 that mates with the spline 341. A gap is left between the surface of the keyway 321 and the surface of the spline 341. This design allows for a reserved space for movement between the first connector 32 and the second structure.

[0025] As a further improvement to the above solution, the spline 341 includes multiple key bodies, and the inner surface of one side of the key groove 321 is a plane parallel to the force-bearing surface on the corresponding key body. For example... Figure 3 In the spline 341 shown, there are 4 key bodies. The 4 key bodies are evenly distributed, and each key body is plate-shaped with the force-bearing surface on the key body being a vertical surface.

[0026] The inner surface of the other side of the keyway 321 is an inclined guide surface 322, and the width of the keyway 321 gradually decreases from bottom to top. Specifically, the guide surface 322 is a spirally rising inclined surface. This design ensures that when the first connector 32 rotates, it can drive the second connector 34 to rotate through one side of the keyway 321. At the same time, when the spline 341 of the second connector 34 is inserted into the corresponding keyway 321, even if it is not perfectly aligned, it is not easily jammed and can be smoothly installed in place under the guidance of the guide surface 322.

[0027] In some embodiments of this utility model, the first connector 32 and the second connector 34 can also adopt other structural forms. For example, the first connector 32 can be a male connector, and the second connector 34 can be a female connector. Alternatively, the second connector 34 can be a prism-shaped square or pentagonal rod, and the first connector 32 can be provided with a corresponding square or pentagonal hole.

[0028] Reference Figure 3 and Figure 4 In a preferred embodiment of this utility model, the lower end of the cutter shaft 33 is provided with a cylindrical insertion hole 331, and the support member 4 is rod-shaped. The upper end of the support member 4 is inserted into the insertion hole 331, and a gap is left between the support member 4 and the inner sidewall of the insertion hole 331. The upper end of the support member 4 has an outwardly convex arc surface 45, which abuts against the end of the insertion hole 331. Preferably, the outwardly convex arc surface 45 is spherical, making the upper end of the support member 4 hemispherical. This design can provide support for the cutter shaft 33, and also allow for a space for movement between the cutter shaft 33 and the support member 4. This facilitates the rotation of the cutter shaft 33 and the adjustment of the tilt angle of its rotation axis within a small range.

[0029] Furthermore, a mounting hole 101 is provided at the bottom of the cup body 1. The lower part of the support member 4 is inserted into the mounting hole 101 and is interference-fitted with the inner wall of the mounting hole 101. A force-bearing step 41 is provided on the outer wall of the support member 4. The step surface of the force-bearing step 41 faces upward and is not lower than the upper end of the mounting hole 101. Since the lower part of the support member 4 is interference-fitted with the inner wall of the mounting hole 101, when installing the support member 4, it is necessary to hammer the support member 4 into the mounting hole 101. At this time, the step surface of the force-bearing step 41 can serve as the force-bearing point for tools such as hammers, avoiding direct hammering of the upper end surface of the support member 4 and damaging the upper arc structure. Of course, in order to reduce the difficulty of installing the support member 4, the bottom of the cup body 1 can be heated before installing the support member 4, using the principle of thermal expansion and contraction to enlarge the mounting hole 101.

[0030] Furthermore, the mounting hole 101 has a limiting step 102 that abuts against the lower end face of the support member 4, and the lower end of the mounting hole 101 also has an inspection hole 103 into which a rod-shaped tool can be inserted. The design of the inspection hole 103 makes it easy for users and maintenance personnel to remove the support member 4, and after removal, they can clean the dirt, food residue, and other contaminants accumulated in the mounting hole 101. The method of removal is to use the rod-shaped tool to hold the lower end of the support member 4, and then use a hammer to strike the rod-shaped tool to push the support member 4 out.

[0031] Reference Figure 1 and Figure 5The cup body is connected to the main unit 7 of a chopping cup to form a complete chopping cup unit. A rotatable central shaft 5 is provided on the cup lid 2. The upper end of the central shaft 5 has a coupling component, such as a male or female connector. A reducer 6, preferably a gear reducer 6, connects the central shaft 5 and the drive shaft 31. After the motor 71 of the main unit 7 is started, the motor shaft drives the central shaft 5 to rotate, which then drives the drive shaft 31 to rotate via the reducer 6, ultimately driving the blade shaft 33 and the blades to rotate, thus chopping the food inside the cup body 1.

[0032] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A chopping cup body, characterized in that, The cup includes a cup body (1) and a cup lid (2) that covers the mouth of the cup body (1). A drive shaft (31) is rotatably mounted on the cup lid (2). The lower end of the drive shaft (31) is provided with a first connector (32). The bottom of the cup body (1) is provided with a support member (4). A cutter shaft (33) is provided inside the cup body (1). The upper end of the cutter shaft (33) is provided with a second connector (34) that connects with the first connector (32) so that the drive shaft (31) can drive the cutter shaft (33) to rotate. There is a gap between the first connector (32) and the second connector (34). The lower end of the cutter shaft (33) is inserted into the support member (4) and the two rotate in cooperation. There is a gap between the cutter shaft (33) and the support member (4).

2. The cup body of the chopping cup according to claim 1, characterized in that, The first connector (32) is a female connector and the second connector (34) is a male connector. The surface of the male connector is provided with a spline (341), and the inner sidewall of the female connector is provided with a keyway (321) that mates with the spline (341). A gap is left between the surface of the keyway (321) and the surface of the spline (341).

3. The body of a chopping cup according to claim 2, characterized in that, The spline (341) includes multiple key bodies. The inner side of one side of the keyway (321) is a plane parallel to the corresponding key body. The inner side of the other side of the keyway (321) is an inclined guide surface (322). The width of the keyway (321) gradually decreases from bottom to top.

4. The cup body of a chopping cup according to claim 3, characterized in that, The guide surface (322) is a spiral inclined surface.

5. The body of a chopping cup according to claim 1, characterized in that, The lower end of the cutter shaft (33) is provided with a socket (331). The support member (4) is rod-shaped. The upper end of the support member (4) is inserted into the socket (331) and a gap is left between the support member (4) and the inner wall of the socket (331).

6. The body of a chopping cup according to claim 5, characterized in that, The upper end of the support member (4) has an outwardly convex arc surface (45), which abuts against the end of the insertion hole (331).

7. The body of a chopping cup according to claim 5 or 6, characterized in that, The bottom of the cup body (1) is provided with a mounting hole (101). The lower part of the support member (4) is inserted into the mounting hole (101) and is interference-fitted with the inner side wall of the mounting hole (101). A force-bearing step (41) is provided on the outer side wall of the support member (4). The step surface of the force-bearing step (41) faces upward and the step surface is not lower than the upper port of the mounting hole (101).

8. The body of a chopping cup according to claim 7, characterized in that, The mounting hole (101) has a limiting step (102) that can abut against the lower end face of the support (4), and the lower end of the mounting hole (101) also has an inspection hole (103) into which a rod-shaped tool can be inserted.

9. The body of a chopping cup according to claim 1, characterized in that, The cup lid (2) is provided with a rotatable central shaft (5), the upper end of the central shaft (5) is provided with a shaft coupling component, and a reducer (6) is connected between the central shaft (5) and the transmission shaft (31).

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