Improved structure of a mixer cup
By designing a multi-layered oil seal structure in the blender cup, gaps at the connection between the shaft and the cup are eliminated, solving the problem of difficult-to-clean food scraps and achieving good sealing effect and easy cleaning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN CITY KUAIMEITE ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-14
AI Technical Summary
Food scraps can easily get stuck at the connection between the blender's spindle and the cup, making it difficult to clean and causing an unpleasant odor over time.
Design a multi-layered sealing oil seal structure, including a Z-shaped skeleton, a sealing rubber ring, and a fastening spring. The top of the oil seal extends out of the boss surface and, combined with a bearing and a gasket, forms a stepped seal to eliminate gaps and prevent food residue from remaining.
It effectively prevents food residue from remaining, improves cleaning convenience, avoids odors, and enhances sealing performance.
Smart Images
Figure CN224483777U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of home appliance technology, specifically to an improved structure for a blender cup. Background Technology
[0002] Currently, the blender's shaft needs to extend into the cooking chamber of the cup to drive the mixing blades to rotate. The shaft and the heating plate of the cup are connected by an oil seal, meaning the top surface of the oil seal is lower than the heating plate, and the edge of the oil seal has a chamfer. This makes it easy for food scraps to get stuck in the gap between the oil seal gasket and the heating plate, making it difficult to clean the food scraps. Over time, this can lead to an odor or even a foul smell. Utility Model Content
[0003] The purpose of this invention is to provide an improved structure for the blender cup that is less prone to food residue residue compared to existing technologies.
[0004] The purpose of this utility model is achieved as follows.
[0005] An improved structure for a blender cup includes a heating plate and a rotating shaft located at the bottom of the cup. The top of the rotating shaft extends into the cooking cavity of the cup and is connected and fixed to the blending blades. The bottom of the rotating shaft passes through the heating plate and is connected to a drive device for transmission. A boss is provided at the center of the heating plate, and a mounting hole for the rotating shaft to pass through is provided in the boss. An oil seal is provided in the boss. The outer circumference of the rotating shaft and the oil seal are rotatably connected in a sealing manner. The top of the oil seal extends out of the top surface of the boss and has an annular plane. The annular plane and the top surface of the boss are flush or form a stepped structure with a decreasing height from the inside to the outside.
[0006] Furthermore, the mounting hole is provided with a first hole section, a second hole section and a third hole section along the height direction. The inner diameter of the first hole section is smaller than the inner diameter of the second hole section, and the inner diameter of the second hole section is smaller than the inner diameter of the third hole section. A first step surface is formed between the first hole section and the second hole section, and a second step surface is formed between the second hole section and the third hole section. The bottom of the oil seal is placed in the second hole section, and the oil seal abuts against the first step surface and the inner side of the first hole section for sealing.
[0007] Multiple seals enhance waterproofing, making it difficult for the oil seal to detach from the top of the mounting hole.
[0008] Furthermore, the oil seal includes a Z-shaped skeleton, a Z-shaped sealing rubber ring, and a fastening spring. The Z-shaped skeleton is placed inside the Z-shaped sealing rubber ring. The inner circumference of the Z-shaped sealing rubber ring is provided with a first sealing lip, a second sealing lip, and a third sealing lip from top to bottom. The fastening spring is sleeved on the outside of the third sealing lip. The inner sides of the first sealing lip, the second sealing lip, and the third sealing lip all abut against the shaft seal.
[0009] The oil seal has a reasonable structural design and excellent sealing effect.
[0010] Furthermore, a bearing and a gasket are provided in the mounting hole. The bearing is set in the third hole section and is sleeved on the rotating shaft. The gasket is provided with a clearance hole corresponding to the rotating shaft. The top of the bearing and the bottom of the gasket abut against each other. The bearing causes the top surface of the gasket and the second step surface to abut against each other. The top surface of the gasket and the first step surface clamp the bottom of the oil seal.
[0011] The bearing presses the gasket tightly against the bottom of the oil seal, securing it firmly and providing excellent sealing.
[0012] Furthermore, the driving device is a motor, and the output shaft of the motor is connected to the rotating shaft, or the output shaft of the motor constitutes the rotating shaft.
[0013] Furthermore, the height difference between the annular plane and the top surface of the boss is equal to 0 or greater than 0 and less than 3 mm.
[0014] Compared with existing technologies, this invention features a protruding boss at the top of the oil seal, effectively eliminating the gap between the two. This prevents food scraps from accumulating on the steps, facilitating cleaning and preventing odors. The oil seal structure is rationally designed, resulting in excellent sealing performance. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the installation structure of the heating plate, rotating shaft, stirring blade and oil seal in Example 1.
[0016] Figure 2 for Figure 1 A schematic diagram of its decomposed structure.
[0017] Figure 3 for Figure 2 A magnified view of part A.
[0018] Figure 4 for Figure 1 A schematic diagram of its decomposed structure.
[0019] Figure 5 This is a partial cross-sectional structural diagram of Example 1.
[0020] Figure 6 for Figure 5 A magnified view of part B. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Example 1, see Figure 1-6 As shown, an improved structure for a mixer cup includes a heating plate 1, a rotating shaft 2, an oil seal 3, a bearing 4, a gasket 5, and a drive device 6 disposed at the bottom of the cup.
[0023] The heating plate 1 has a boss 7 at its center. The boss 7 has a mounting hole 8 for the rotating shaft 2 to pass through. The mounting hole 8 has a first hole section 81, a second hole section 82 and a third hole section 83 along the height direction. The inner diameter of the first hole section 81 is smaller than the inner diameter of the second hole section 82, and the inner diameter of the second hole section 82 is smaller than the inner diameter of the third hole section 83. A first step surface 84 is formed between the first hole section 81 and the second hole section 82, and a second step surface 85 is formed between the second hole section 82 and the third hole section 83.
[0024] The oil seal 3 includes a Z-shaped skeleton 31, a Z-shaped sealing rubber ring 32, and a fastening spring 33. The Z-shaped skeleton 31 is placed inside the Z-shaped sealing rubber ring 32. The inner circumference of the Z-shaped sealing rubber ring 32 is provided with a first sealing lip 34, a second sealing lip 35, and a third sealing lip 36 from top to bottom. The fastening spring 33 is sleeved on the outside of the third sealing lip 36.
[0025] The oil seal 3 is installed into the mounting hole 8 from below the heating plate 1. The bottom of the oil seal 3 is placed inside the second hole section 82, and the oil seal 3 abuts against and seals against the first stepped surface 84 and the inner side of the first hole section 81. The top of the oil seal 3 extends through the first hole section 81 and protrudes from the top surface of the boss 7. The top of the oil seal 3 has an annular plane 30, and there is a step 9 between the annular plane 30 and the top surface of the boss 7, which decreases in height from the inside to the outside. In this way, food scraps are not easy to adhere between the oil seal 3 and the boss 7. Even if there are food scraps, their adhesion is low and they are easily washed away by the water flow, avoiding residue and odor. Preferably, the Z-shaped sealing rubber ring 32 has sealing teeth 37 corresponding to the first stepped surface 84, and the sealing teeth 37 and the first stepped surface 84 elastically abut against each other for sealing.
[0026] In this utility model, the height difference between the annular plane 30 and the top surface of the boss 7 is equal to 0 or greater than 0 and less than 3mm, that is, the height of the step 9 is 0 (i.e. the annular plane 30 and the top surface of the boss 7 are flush) or less than 3mm and greater than 0.
[0027] Gasket 5 is disposed within the third hole section 83, and a clearance hole 51 is provided in the center of gasket 5. Bearing 4 is disposed within the third hole section 83. The top of bearing 4 abuts against the bottom of gasket 5, and bearing 4 causes the top surface of gasket 5 to abut against the second step surface 85. The top surface of gasket 5 and the first step surface 84 clamp the bottom of oil seal 3.
[0028] In this embodiment, the drive device 6 is a motor, and the output shaft of the motor constitutes the rotating shaft 2. The rotating shaft 2 extends into the cooking cavity of the cup body through the bearing 4, the gasket 5, and the oil seal 3, and is connected and fixed to the stirring blade 11. The outer circumference of the rotating shaft 2 and the oil seal 3 are rotatably connected in a sealing manner. Specifically, the inner sides of the first sealing lip 34, the second sealing lip 35, and the third sealing lip 36 all abut against the rotating shaft 2 in a sealing manner. The bearing 4 is sleeved on the rotating shaft 2, and the rotating shaft 2 and the bearing 4 are rotatably connected. The rotating shaft 2 passes through the clearance hole 51, so that the gasket 5 and the rotating shaft 2 do not contact each other.
[0029] In this utility model, depending on the installation method of the drive device 6, the drive device 6 can optionally be a motor, and the output shaft of the motor and the rotating shaft 2 are connected by a transmission, so that the output shaft of the motor and the rotating shaft 2 can be separated.
[0030] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.
[0031] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.
[0032] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.
[0033] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.
Claims
1. An improved structure for a blender cup, comprising a heating plate and a rotating shaft disposed at the bottom of the cup, the top of the rotating shaft extending into the cooking cavity of the cup and connected and fixed to the blending blades, and the bottom of the rotating shaft passing through the heating plate and connected to a drive device for transmission, characterized in that, The heating plate has a boss in the center, with a mounting hole for the rotating shaft to pass through. An oil seal is installed inside the boss, and the outer circumference of the rotating shaft is rotatably connected to the oil seal. The top of the oil seal extends out of the top surface of the boss, and the top of the oil seal has an annular plane. The annular plane and the top surface of the boss are flush or form a step with a decreasing height from the inside to the outside.
2. The improved structure of the mixer cup body according to claim 1, characterized in that, The mounting hole has a first section, a second section, and a third section along the height direction. The inner diameter of the first section is smaller than that of the second section, and the inner diameter of the second section is smaller than that of the third section. A first step surface is formed between the first section and the second section, and a second step surface is formed between the second section and the third section. The bottom of the oil seal is placed inside the second section, and the oil seal abuts against the first step surface and the inner side of the first section for sealing.
3. The improved structure of the mixer cup body according to claim 2, characterized in that, The oil seal includes a Z-shaped skeleton, a Z-shaped sealing rubber ring, and a fastening spring. The Z-shaped skeleton is placed inside the Z-shaped sealing rubber ring. The inner circumference of the Z-shaped sealing rubber ring has a first sealing lip, a second sealing lip, and a third sealing lip from top to bottom. The fastening spring is sleeved on the outside of the third sealing lip. The inner sides of the first sealing lip, the second sealing lip, and the third sealing lip all abut against the shaft seal.
4. The improved structure of the mixer cup body according to claim 2, characterized in that, The mounting hole contains a bearing and a gasket. The bearing is installed in the third hole section and is sleeved on the rotating shaft. The gasket has a clearance hole corresponding to the rotating shaft. The top of the bearing and the bottom of the gasket abut against each other. The bearing causes the top surface of the gasket and the second step surface to abut against each other. The top surface of the gasket and the first step surface clamp the bottom of the oil seal.
5. The improved structure of the mixer cup body according to claim 1, characterized in that, The driving device is a motor, and the output shaft of the motor is connected to the rotating shaft, or the output shaft of the motor constitutes the rotating shaft.
6. The improved structure of the mixer cup according to claim 1, characterized in that, The height difference between the annular plane and the top surface of the boss is equal to 0 or greater than 0 and less than 3 mm.